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authorDavid S. Miller <davem@davemloft.net>2016-08-18 01:17:32 -0400
committerDavid S. Miller <davem@davemloft.net>2016-08-18 01:17:32 -0400
commit60747ef4d173c2747bf7f0377fb22846cb422195 (patch)
treeea0faf33b952495c47909be1400c475a3f3821b0 /drivers
parent484334198f8ce9552e20930fff9408ebf6bcf94d (diff)
parent184ca823481c99dadd7d946e5afd4bb921eab30d (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Minor overlapping changes for both merge conflicts. Resolution work done by Stephen Rothwell was used as a reference. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/Makefile1
-rw-r--r--drivers/acpi/acpi_cmos_rtc.c2
-rw-r--r--drivers/acpi/button.c4
-rw-r--r--drivers/acpi/ec.c41
-rw-r--r--drivers/acpi/nfit/core.c3
-rw-r--r--drivers/base/power/opp/core.c31
-rw-r--r--drivers/base/power/trace.c6
-rw-r--r--drivers/base/power/wakeup.c18
-rw-r--r--drivers/block/brd.c19
-rw-r--r--drivers/block/drbd/drbd_main.c8
-rw-r--r--drivers/block/drbd/drbd_receiver.c2
-rw-r--r--drivers/block/drbd/drbd_req.c6
-rw-r--r--drivers/block/drbd/drbd_worker.c2
-rw-r--r--drivers/block/floppy.c21
-rw-r--r--drivers/block/loop.c67
-rw-r--r--drivers/block/nbd.c12
-rw-r--r--drivers/block/pktcdvd.c2
-rw-r--r--drivers/block/rbd.c10
-rw-r--r--drivers/block/umem.c2
-rw-r--r--drivers/block/virtio_blk.c26
-rw-r--r--drivers/block/zram/zram_drv.c29
-rw-r--r--drivers/char/Kconfig28
-rw-r--r--drivers/char/Makefile1
-rw-r--r--drivers/char/genrtc.c539
-rw-r--r--drivers/clocksource/arm_arch_timer.c26
-rw-r--r--drivers/cpufreq/Kconfig1
-rw-r--r--drivers/cpufreq/intel_pstate.c2
-rw-r--r--drivers/cpufreq/powernv-cpufreq.c21
-rw-r--r--drivers/crypto/caam/caamalg.c13
-rw-r--r--drivers/crypto/caam/caamhash.c1
-rw-r--r--drivers/edac/sb_edac.c15
-rw-r--r--drivers/firmware/broadcom/bcm47xx_sprom.c2
-rw-r--r--drivers/firmware/efi/capsule-loader.c8
-rw-r--r--drivers/firmware/efi/capsule.c6
-rw-r--r--drivers/fpga/Kconfig1
-rw-r--r--drivers/gpu/drm/Makefile2
-rw-r--r--drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c7
-rw-r--r--drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c4
-rw-r--r--drivers/gpu/drm/amd/amdgpu/ci_dpm.c1
-rw-r--r--drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c12
-rw-r--r--drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c1
-rw-r--r--drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c8
-rw-r--r--drivers/gpu/drm/cirrus/cirrus_main.c13
-rw-r--r--drivers/gpu/drm/drm_atomic.c4
-rw-r--r--drivers/gpu/drm/drm_atomic_helper.c7
-rw-r--r--drivers/gpu/drm/drm_blend.c238
-rw-r--r--drivers/gpu/drm/drm_crtc.c8
-rw-r--r--drivers/gpu/drm/drm_crtc_internal.h4
-rw-r--r--drivers/gpu/drm/drm_edid.c22
-rw-r--r--drivers/gpu/drm/exynos/exynos_drm_drv.h2
-rw-r--r--drivers/gpu/drm/exynos/exynos_drm_fbdev.c2
-rw-r--r--drivers/gpu/drm/exynos/exynos_drm_g2d.c12
-rw-r--r--drivers/gpu/drm/exynos/exynos_drm_gem.c20
-rw-r--r--drivers/gpu/drm/exynos/exynos_drm_gem.h2
-rw-r--r--drivers/gpu/drm/exynos/exynos_drm_plane.c67
-rw-r--r--drivers/gpu/drm/exynos/exynos_mixer.c6
-rw-r--r--drivers/gpu/drm/i915/i915_drv.h4
-rw-r--r--drivers/gpu/drm/i915/intel_display.c30
-rw-r--r--drivers/gpu/drm/i915/intel_fbdev.c25
-rw-r--r--drivers/gpu/drm/i915/intel_pm.c3
-rw-r--r--drivers/gpu/drm/mediatek/mtk_drm_gem.c13
-rw-r--r--drivers/gpu/drm/mediatek/mtk_drm_gem.h2
-rw-r--r--drivers/gpu/drm/msm/msm_drv.c13
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_bo.c4
-rw-r--r--drivers/gpu/drm/nouveau/nvkm/subdev/instmem/gk20a.c13
-rw-r--r--drivers/gpu/drm/radeon/radeon_ttm.c4
-rw-r--r--drivers/gpu/drm/rcar-du/rcar_du_crtc.c2
-rw-r--r--drivers/gpu/drm/rcar-du/rcar_du_drv.h1
-rw-r--r--drivers/gpu/drm/rcar-du/rcar_du_hdmienc.c1
-rw-r--r--drivers/gpu/drm/rcar-du/rcar_du_kms.c5
-rw-r--r--drivers/gpu/drm/rcar-du/rcar_du_plane.c9
-rw-r--r--drivers/gpu/drm/rcar-du/rcar_du_plane.h2
-rw-r--r--drivers/gpu/drm/rcar-du/rcar_du_vsp.c14
-rw-r--r--drivers/gpu/drm/rockchip/rockchip_drm_gem.c17
-rw-r--r--drivers/gpu/drm/rockchip/rockchip_drm_gem.h2
-rw-r--r--drivers/gpu/drm/sti/sti_cursor.c4
-rw-r--r--drivers/gpu/drm/sti/sti_gdp.c4
-rw-r--r--drivers/gpu/drm/sti/sti_hqvdp.c4
-rw-r--r--drivers/gpu/drm/sti/sti_mixer.c9
-rw-r--r--drivers/gpu/drm/sti/sti_plane.c78
-rw-r--r--drivers/gpu/drm/sti/sti_plane.h7
-rw-r--r--drivers/gpu/drm/ttm/ttm_bo.c3
-rw-r--r--drivers/gpu/drm/ttm/ttm_bo_util.c10
-rw-r--r--drivers/infiniband/Kconfig1
-rw-r--r--drivers/infiniband/core/cma.c98
-rw-r--r--drivers/infiniband/core/device.c9
-rw-r--r--drivers/infiniband/core/iwcm.c54
-rw-r--r--drivers/infiniband/core/iwcm.h2
-rw-r--r--drivers/infiniband/core/iwpm_util.c3
-rw-r--r--drivers/infiniband/core/multicast.c12
-rw-r--r--drivers/infiniband/core/netlink.c6
-rw-r--r--drivers/infiniband/core/rw.c24
-rw-r--r--drivers/infiniband/core/sa_query.c41
-rw-r--r--drivers/infiniband/core/sysfs.c15
-rw-r--r--drivers/infiniband/core/ucma.c18
-rw-r--r--drivers/infiniband/core/umem.c7
-rw-r--r--drivers/infiniband/core/uverbs.h14
-rw-r--r--drivers/infiniband/core/uverbs_cmd.c535
-rw-r--r--drivers/infiniband/core/uverbs_main.c75
-rw-r--r--drivers/infiniband/core/verbs.c172
-rw-r--r--drivers/infiniband/hw/cxgb3/iwch_cm.c4
-rw-r--r--drivers/infiniband/hw/cxgb3/iwch_provider.c27
-rw-r--r--drivers/infiniband/hw/cxgb4/cm.c193
-rw-r--r--drivers/infiniband/hw/cxgb4/cq.c42
-rw-r--r--drivers/infiniband/hw/cxgb4/device.c2
-rw-r--r--drivers/infiniband/hw/cxgb4/iw_cxgb4.h24
-rw-r--r--drivers/infiniband/hw/cxgb4/mem.c127
-rw-r--r--drivers/infiniband/hw/cxgb4/provider.c31
-rw-r--r--drivers/infiniband/hw/cxgb4/qp.c40
-rw-r--r--drivers/infiniband/hw/hfi1/Kconfig4
-rw-r--r--drivers/infiniband/hw/hfi1/Makefile2
-rw-r--r--drivers/infiniband/hw/hfi1/affinity.c567
-rw-r--r--drivers/infiniband/hw/hfi1/affinity.h38
-rw-r--r--drivers/infiniband/hw/hfi1/chip.c296
-rw-r--r--drivers/infiniband/hw/hfi1/chip.h5
-rw-r--r--drivers/infiniband/hw/hfi1/chip_registers.h4
-rw-r--r--drivers/infiniband/hw/hfi1/driver.c52
-rw-r--r--drivers/infiniband/hw/hfi1/file_ops.c93
-rw-r--r--drivers/infiniband/hw/hfi1/firmware.c125
-rw-r--r--drivers/infiniband/hw/hfi1/hfi.h123
-rw-r--r--drivers/infiniband/hw/hfi1/init.c51
-rw-r--r--drivers/infiniband/hw/hfi1/mad.c60
-rw-r--r--drivers/infiniband/hw/hfi1/mad.h7
-rw-r--r--drivers/infiniband/hw/hfi1/mmu_rb.c254
-rw-r--r--drivers/infiniband/hw/hfi1/mmu_rb.h37
-rw-r--r--drivers/infiniband/hw/hfi1/pcie.c68
-rw-r--r--drivers/infiniband/hw/hfi1/pio.c21
-rw-r--r--drivers/infiniband/hw/hfi1/platform.c20
-rw-r--r--drivers/infiniband/hw/hfi1/qp.c68
-rw-r--r--drivers/infiniband/hw/hfi1/qp.h4
-rw-r--r--drivers/infiniband/hw/hfi1/qsfp.c409
-rw-r--r--drivers/infiniband/hw/hfi1/qsfp.h3
-rw-r--r--drivers/infiniband/hw/hfi1/rc.c90
-rw-r--r--drivers/infiniband/hw/hfi1/ruc.c57
-rw-r--r--drivers/infiniband/hw/hfi1/sysfs.c25
-rw-r--r--drivers/infiniband/hw/hfi1/trace.h1333
-rw-r--r--drivers/infiniband/hw/hfi1/trace_ctxts.h141
-rw-r--r--drivers/infiniband/hw/hfi1/trace_dbg.h155
-rw-r--r--drivers/infiniband/hw/hfi1/trace_ibhdrs.h209
-rw-r--r--drivers/infiniband/hw/hfi1/trace_misc.h81
-rw-r--r--drivers/infiniband/hw/hfi1/trace_rc.h123
-rw-r--r--drivers/infiniband/hw/hfi1/trace_rx.h322
-rw-r--r--drivers/infiniband/hw/hfi1/trace_tx.h642
-rw-r--r--drivers/infiniband/hw/hfi1/twsi.c489
-rw-r--r--drivers/infiniband/hw/hfi1/twsi.h65
-rw-r--r--drivers/infiniband/hw/hfi1/uc.c61
-rw-r--r--drivers/infiniband/hw/hfi1/ud.c86
-rw-r--r--drivers/infiniband/hw/hfi1/user_exp_rcv.c124
-rw-r--r--drivers/infiniband/hw/hfi1/user_pages.c19
-rw-r--r--drivers/infiniband/hw/hfi1/user_sdma.c301
-rw-r--r--drivers/infiniband/hw/hfi1/user_sdma.h8
-rw-r--r--drivers/infiniband/hw/hfi1/verbs.c89
-rw-r--r--drivers/infiniband/hw/hfi1/verbs.h8
-rw-r--r--drivers/infiniband/hw/hfi1/verbs_txreq.h2
-rw-r--r--drivers/infiniband/hw/i40iw/i40iw_cm.c4
-rw-r--r--drivers/infiniband/hw/i40iw/i40iw_d.h3
-rw-r--r--drivers/infiniband/hw/i40iw/i40iw_puda.c4
-rw-r--r--drivers/infiniband/hw/i40iw/i40iw_type.h2
-rw-r--r--drivers/infiniband/hw/i40iw/i40iw_uk.c29
-rw-r--r--drivers/infiniband/hw/i40iw/i40iw_user.h2
-rw-r--r--drivers/infiniband/hw/i40iw/i40iw_verbs.c76
-rw-r--r--drivers/infiniband/hw/mlx4/cq.c4
-rw-r--r--drivers/infiniband/hw/mlx4/main.c222
-rw-r--r--drivers/infiniband/hw/mlx4/mlx4_ib.h9
-rw-r--r--drivers/infiniband/hw/mlx5/cq.c87
-rw-r--r--drivers/infiniband/hw/mlx5/gsi.c19
-rw-r--r--drivers/infiniband/hw/mlx5/main.c429
-rw-r--r--drivers/infiniband/hw/mlx5/mlx5_ib.h74
-rw-r--r--drivers/infiniband/hw/mlx5/mr.c4
-rw-r--r--drivers/infiniband/hw/mlx5/qp.c691
-rw-r--r--drivers/infiniband/hw/mlx5/srq.c112
-rw-r--r--drivers/infiniband/hw/mlx5/user.h88
-rw-r--r--drivers/infiniband/hw/mthca/mthca_provider.c24
-rw-r--r--drivers/infiniband/hw/mthca/mthca_reset.c42
-rw-r--r--drivers/infiniband/hw/nes/nes_verbs.c33
-rw-r--r--drivers/infiniband/hw/ocrdma/ocrdma_main.c19
-rw-r--r--drivers/infiniband/hw/qib/qib_qp.c43
-rw-r--r--drivers/infiniband/hw/qib/qib_ud.c8
-rw-r--r--drivers/infiniband/hw/qib/qib_verbs.c2
-rw-r--r--drivers/infiniband/hw/qib/qib_verbs.h2
-rw-r--r--drivers/infiniband/hw/usnic/usnic_ib_main.c16
-rw-r--r--drivers/infiniband/hw/usnic/usnic_ib_sysfs.c17
-rw-r--r--drivers/infiniband/sw/Makefile1
-rw-r--r--drivers/infiniband/sw/rdmavt/Kconfig1
-rw-r--r--drivers/infiniband/sw/rdmavt/cq.c1
-rw-r--r--drivers/infiniband/sw/rdmavt/mr.c124
-rw-r--r--drivers/infiniband/sw/rdmavt/mr.h2
-rw-r--r--drivers/infiniband/sw/rdmavt/qp.c246
-rw-r--r--drivers/infiniband/sw/rdmavt/vt.c10
-rw-r--r--drivers/infiniband/sw/rxe/Kconfig24
-rw-r--r--drivers/infiniband/sw/rxe/Makefile24
-rw-r--r--drivers/infiniband/sw/rxe/rxe.c386
-rw-r--r--drivers/infiniband/sw/rxe/rxe.h77
-rw-r--r--drivers/infiniband/sw/rxe/rxe_av.c98
-rw-r--r--drivers/infiniband/sw/rxe/rxe_comp.c734
-rw-r--r--drivers/infiniband/sw/rxe/rxe_cq.c165
-rw-r--r--drivers/infiniband/sw/rxe/rxe_dma.c166
-rw-r--r--drivers/infiniband/sw/rxe/rxe_hdr.h952
-rw-r--r--drivers/infiniband/sw/rxe/rxe_icrc.c96
-rw-r--r--drivers/infiniband/sw/rxe/rxe_loc.h286
-rw-r--r--drivers/infiniband/sw/rxe/rxe_mcast.c190
-rw-r--r--drivers/infiniband/sw/rxe/rxe_mmap.c173
-rw-r--r--drivers/infiniband/sw/rxe/rxe_mr.c643
-rw-r--r--drivers/infiniband/sw/rxe/rxe_net.c708
-rw-r--r--drivers/infiniband/sw/rxe/rxe_net.h53
-rw-r--r--drivers/infiniband/sw/rxe/rxe_opcode.c961
-rw-r--r--drivers/infiniband/sw/rxe/rxe_opcode.h129
-rw-r--r--drivers/infiniband/sw/rxe/rxe_param.h172
-rw-r--r--drivers/infiniband/sw/rxe/rxe_pool.c502
-rw-r--r--drivers/infiniband/sw/rxe/rxe_pool.h163
-rw-r--r--drivers/infiniband/sw/rxe/rxe_qp.c851
-rw-r--r--drivers/infiniband/sw/rxe/rxe_queue.c217
-rw-r--r--drivers/infiniband/sw/rxe/rxe_queue.h178
-rw-r--r--drivers/infiniband/sw/rxe/rxe_recv.c420
-rw-r--r--drivers/infiniband/sw/rxe/rxe_req.c726
-rw-r--r--drivers/infiniband/sw/rxe/rxe_resp.c1380
-rw-r--r--drivers/infiniband/sw/rxe/rxe_srq.c193
-rw-r--r--drivers/infiniband/sw/rxe/rxe_sysfs.c157
-rw-r--r--drivers/infiniband/sw/rxe/rxe_task.c154
-rw-r--r--drivers/infiniband/sw/rxe/rxe_task.h95
-rw-r--r--drivers/infiniband/sw/rxe/rxe_verbs.c1330
-rw-r--r--drivers/infiniband/sw/rxe/rxe_verbs.h480
-rw-r--r--drivers/infiniband/ulp/ipoib/ipoib_ethtool.c6
-rw-r--r--drivers/infiniband/ulp/ipoib/ipoib_main.c3
-rw-r--r--drivers/infiniband/ulp/ipoib/ipoib_verbs.c10
-rw-r--r--drivers/infiniband/ulp/isert/ib_isert.c2
-rw-r--r--drivers/infiniband/ulp/isert/ib_isert.h1
-rw-r--r--drivers/infiniband/ulp/srpt/ib_srpt.c10
-rw-r--r--drivers/infiniband/ulp/srpt/ib_srpt.h6
-rw-r--r--drivers/input/joystick/xpad.c43
-rw-r--r--drivers/input/keyboard/cros_ec_keyb.c19
-rw-r--r--drivers/input/misc/rotary_encoder.c23
-rw-r--r--drivers/input/mouse/elan_i2c_core.c79
-rw-r--r--drivers/input/mouse/elantech.c8
-rw-r--r--drivers/input/rmi4/rmi_bus.c5
-rw-r--r--drivers/input/serio/i8042.c16
-rw-r--r--drivers/input/serio/libps2.c10
-rw-r--r--drivers/input/touchscreen/Kconfig25
-rw-r--r--drivers/input/touchscreen/Makefile2
-rw-r--r--drivers/input/touchscreen/ili210x.c2
-rw-r--r--drivers/input/touchscreen/silead.c565
-rw-r--r--drivers/input/touchscreen/sis_i2c.c413
-rw-r--r--drivers/iommu/amd_iommu.c12
-rw-r--r--drivers/iommu/dma-iommu.c22
-rw-r--r--drivers/iommu/intel-iommu.c12
-rw-r--r--drivers/iommu/mtk_iommu.h6
-rw-r--r--drivers/irqchip/irq-mips-gic.c2
-rw-r--r--drivers/md/bcache/request.c12
-rw-r--r--drivers/md/bcache/super.c2
-rw-r--r--drivers/md/bcache/writeback.h2
-rw-r--r--drivers/md/dm-cache-target.c8
-rw-r--r--drivers/md/dm-crypt.c4
-rw-r--r--drivers/md/dm-era-target.c2
-rw-r--r--drivers/md/dm-flakey.c29
-rw-r--r--drivers/md/dm-io.c6
-rw-r--r--drivers/md/dm-log-writes.c4
-rw-r--r--drivers/md/dm-mpath.c26
-rw-r--r--drivers/md/dm-raid.c4
-rw-r--r--drivers/md/dm-raid1.c10
-rw-r--r--drivers/md/dm-region-hash.c4
-rw-r--r--drivers/md/dm-rq.c20
-rw-r--r--drivers/md/dm-snap.c6
-rw-r--r--drivers/md/dm-stripe.c4
-rw-r--r--drivers/md/dm-thin.c8
-rw-r--r--drivers/md/dm-zero.c2
-rw-r--r--drivers/md/dm.c24
-rw-r--r--drivers/md/linear.c2
-rw-r--r--drivers/md/md.c4
-rw-r--r--drivers/md/multipath.c8
-rw-r--r--drivers/md/raid0.c2
-rw-r--r--drivers/md/raid1.c6
-rw-r--r--drivers/md/raid10.c8
-rw-r--r--drivers/md/raid5-cache.c2
-rw-r--r--drivers/md/raid5.c20
-rw-r--r--drivers/media/dvb-frontends/cxd2841er.c10
-rw-r--r--drivers/media/i2c/adv7180.c18
-rw-r--r--drivers/media/i2c/adv7511.c24
-rw-r--r--drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_drv.c4
-rw-r--r--drivers/media/platform/sti/bdisp/bdisp-hw.c26
-rw-r--r--drivers/media/platform/vim2m.c15
-rw-r--r--drivers/media/platform/vivid/vivid-cec.c10
-rw-r--r--drivers/media/v4l2-core/videobuf2-dma-contig.c30
-rw-r--r--drivers/media/v4l2-core/videobuf2-dma-sg.c21
-rw-r--r--drivers/media/v4l2-core/videobuf2-vmalloc.c2
-rw-r--r--drivers/misc/Makefile3
-rw-r--r--drivers/misc/cxl/context.c3
-rw-r--r--drivers/misc/cxl/cxl.h2
-rw-r--r--drivers/misc/cxl/native.c2
-rw-r--r--drivers/misc/cxl/pci.c12
-rw-r--r--drivers/misc/cxl/vphb.c2
-rw-r--r--drivers/misc/lkdtm_usercopy.c2
-rw-r--r--drivers/misc/mic/Kconfig4
-rw-r--r--drivers/misc/mic/host/mic_boot.c20
-rw-r--r--drivers/mtd/bcm47xxpart.c2
-rw-r--r--drivers/mtd/ubi/attach.c141
-rw-r--r--drivers/mtd/ubi/build.c13
-rw-r--r--drivers/mtd/ubi/fastmap.c65
-rw-r--r--drivers/mtd/ubi/gluebi.c5
-rw-r--r--drivers/mtd/ubi/io.c2
-rw-r--r--drivers/mtd/ubi/ubi.h46
-rw-r--r--drivers/mtd/ubi/vmt.c25
-rw-r--r--drivers/mtd/ubi/wl.c41
-rw-r--r--drivers/net/bonding/bond_main.c2
-rw-r--r--drivers/net/caif/Kconfig2
-rw-r--r--drivers/net/ethernet/chelsio/cxgb4/t4_msg.h2
-rw-r--r--drivers/net/ethernet/davicom/dm9000.c8
-rw-r--r--drivers/net/ethernet/hisilicon/hns/hns_dsaf_gmac.c2
-rw-r--r--drivers/net/ethernet/intel/e1000e/82571.c6
-rw-r--r--drivers/net/ethernet/intel/e1000e/e1000.h1
-rw-r--r--drivers/net/ethernet/intel/e1000e/ich8lan.c3
-rw-r--r--drivers/net/ethernet/intel/e1000e/netdev.c66
-rw-r--r--drivers/net/ethernet/intel/i40e/i40e_main.c35
-rw-r--r--drivers/net/ethernet/intel/igb/igb_ptp.c26
-rw-r--r--drivers/net/ethernet/intel/ixgbe/ixgbe_main.c23
-rw-r--r--drivers/net/ethernet/mediatek/mtk_eth_soc.c49
-rw-r--r--drivers/net/ethernet/mellanox/mlx4/fw.c40
-rw-r--r--drivers/net/ethernet/mellanox/mlx5/core/en_tc.c12
-rw-r--r--drivers/net/ethernet/mellanox/mlx5/core/srq.c265
-rw-r--r--drivers/net/ethernet/mellanox/mlx5/core/transobj.c4
-rw-r--r--drivers/net/ethernet/mellanox/mlxsw/reg.h11
-rw-r--r--drivers/net/ethernet/mellanox/mlxsw/spectrum.c114
-rw-r--r--drivers/net/ethernet/mellanox/mlxsw/spectrum.h2
-rw-r--r--drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c2
-rw-r--r--drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c3
-rw-r--r--drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c42
-rw-r--r--drivers/net/ethernet/mellanox/mlxsw/trap.h4
-rw-r--r--drivers/net/ethernet/qlogic/qed/qed_dcbx.c223
-rw-r--r--drivers/net/ethernet/qlogic/qed/qed_hsi.h8
-rw-r--r--drivers/net/ethernet/ti/cpsw.c2
-rw-r--r--drivers/net/hyperv/hyperv_net.h24
-rw-r--r--drivers/net/hyperv/netvsc.c19
-rw-r--r--drivers/net/hyperv/netvsc_drv.c105
-rw-r--r--drivers/net/macsec.c52
-rw-r--r--drivers/net/macvlan.c2
-rw-r--r--drivers/net/macvtap.c5
-rw-r--r--drivers/net/phy/micrel.c27
-rw-r--r--drivers/net/wireless/ath/ath10k/debug.c12
-rw-r--r--drivers/net/wireless/ath/ath10k/mac.c10
-rw-r--r--drivers/net/wireless/ath/ath10k/wmi.c2
-rw-r--r--drivers/net/wireless/ath/ath6kl/cfg80211.c2
-rw-r--r--drivers/net/wireless/ath/ath9k/common-spectral.c6
-rw-r--r--drivers/net/wireless/ath/ath9k/init.c2
-rw-r--r--drivers/net/wireless/ath/ath9k/main.c12
-rw-r--r--drivers/net/wireless/ath/ath9k/recv.c2
-rw-r--r--drivers/net/wireless/ath/dfs_pattern_detector.c2
-rw-r--r--drivers/net/wireless/ath/regd.c4
-rw-r--r--drivers/ntb/hw/intel/ntb_hw_intel.c49
-rw-r--r--drivers/ntb/ntb_transport.c38
-rw-r--r--drivers/ntb/test/ntb_perf.c240
-rw-r--r--drivers/ntb/test/ntb_pingpong.c62
-rw-r--r--drivers/ntb/test/ntb_tool.c459
-rw-r--r--drivers/nvdimm/btt.c19
-rw-r--r--drivers/nvdimm/btt_devs.c20
-rw-r--r--drivers/nvdimm/nd.h1
-rw-r--r--drivers/nvdimm/pmem.c16
-rw-r--r--drivers/nvme/host/pci.c20
-rw-r--r--drivers/nvme/host/rdma.c83
-rw-r--r--drivers/nvme/target/admin-cmd.c6
-rw-r--r--drivers/nvme/target/core.c4
-rw-r--r--drivers/nvme/target/loop.c4
-rw-r--r--drivers/nvme/target/nvmet.h1
-rw-r--r--drivers/nvme/target/rdma.c100
-rw-r--r--drivers/of/platform.c20
-rw-r--r--drivers/parisc/ccio-dma.c16
-rw-r--r--drivers/parisc/sba_iommu.c16
-rw-r--r--drivers/pci/ecam.c2
-rw-r--r--drivers/pci/hotplug/acpiphp_glue.c6
-rw-r--r--drivers/pci/msi.c2
-rw-r--r--drivers/perf/arm_pmu.c25
-rw-r--r--drivers/pinctrl/intel/pinctrl-merrifield.c1
-rw-r--r--drivers/pinctrl/meson/pinctrl-meson.c8
-rw-r--r--drivers/pinctrl/pinctrl-amd.c20
-rw-r--r--drivers/pinctrl/pinctrl-pistachio.c9
-rw-r--r--drivers/platform/chrome/cros_ec_proto.c17
-rw-r--r--drivers/platform/x86/dell-wmi.c4
-rw-r--r--drivers/pnp/pnpbios/core.c1
-rw-r--r--drivers/power/max17042_battery.c15
-rw-r--r--drivers/power/reset/Kconfig2
-rw-r--r--drivers/power/reset/hisi-reboot.c5
-rw-r--r--drivers/power/tps65217_charger.c1
-rw-r--r--drivers/pwm/Kconfig26
-rw-r--r--drivers/pwm/Makefile3
-rw-r--r--drivers/pwm/core.c27
-rw-r--r--drivers/pwm/pwm-atmel.c30
-rw-r--r--drivers/pwm/pwm-bcm-iproc.c277
-rw-r--r--drivers/pwm/pwm-cros-ec.c260
-rw-r--r--drivers/pwm/pwm-lpc32xx.c7
-rw-r--r--drivers/pwm/pwm-lpss-pci.c1
-rw-r--r--drivers/pwm/pwm-lpss.c26
-rw-r--r--drivers/pwm/pwm-rockchip.c178
-rw-r--r--drivers/pwm/pwm-stmpe.c319
-rw-r--r--drivers/pwm/pwm-tegra.c69
-rw-r--r--drivers/pwm/pwm-tiecap.c37
-rw-r--r--drivers/pwm/pwm-tiehrpwm.c38
-rw-r--r--drivers/pwm/pwm-tipwmss.c49
-rw-r--r--drivers/pwm/pwm-tipwmss.h39
-rw-r--r--drivers/pwm/sysfs.c17
-rw-r--r--drivers/rapidio/rio_cm.c24
-rw-r--r--drivers/regulator/pwm-regulator.c162
-rw-r--r--drivers/remoteproc/qcom_q6v5_pil.c7
-rw-r--r--drivers/rtc/Kconfig26
-rw-r--r--drivers/rtc/Makefile2
-rw-r--r--drivers/rtc/interface.c32
-rw-r--r--drivers/rtc/rtc-abx80x.c12
-rw-r--r--drivers/rtc/rtc-asm9260.c1
-rw-r--r--drivers/rtc/rtc-at91sam9.c1
-rw-r--r--drivers/rtc/rtc-cmos.c17
-rw-r--r--drivers/rtc/rtc-da9052.c1
-rw-r--r--drivers/rtc/rtc-da9055.c1
-rw-r--r--drivers/rtc/rtc-davinci.c2
-rw-r--r--drivers/rtc/rtc-ds1286.c2
-rw-r--r--drivers/rtc/rtc-ds1305.c7
-rw-r--r--drivers/rtc/rtc-ds1307.c33
-rw-r--r--drivers/rtc/rtc-ds1343.c6
-rw-r--r--drivers/rtc/rtc-ds1685.c53
-rw-r--r--drivers/rtc/rtc-ds2404.c2
-rw-r--r--drivers/rtc/rtc-ds3232.c6
-rw-r--r--drivers/rtc/rtc-efi.c6
-rw-r--r--drivers/rtc/rtc-generic.c36
-rw-r--r--drivers/rtc/rtc-hym8563.c5
-rw-r--r--drivers/rtc/rtc-isl12057.c33
-rw-r--r--drivers/rtc/rtc-m41t80.c34
-rw-r--r--drivers/rtc/rtc-m48t86.c2
-rw-r--r--drivers/rtc/rtc-max6916.c164
-rw-r--r--drivers/rtc/rtc-mc146818-lib.c198
-rw-r--r--drivers/rtc/rtc-mrst.c10
-rw-r--r--drivers/rtc/rtc-pcf2123.c4
-rw-r--r--drivers/rtc/rtc-pcf85063.c59
-rw-r--r--drivers/rtc/rtc-pcf8563.c5
-rw-r--r--drivers/rtc/rtc-rc5t583.c1
-rw-r--r--drivers/rtc/rtc-rs5c372.c6
-rw-r--r--drivers/rtc/rtc-rv8803.c205
-rw-r--r--drivers/rtc/rtc-rx8010.c8
-rw-r--r--drivers/rtc/rtc-rx8025.c5
-rw-r--r--drivers/rtc/rtc-s35390a.c157
-rw-r--r--drivers/rtc/rtc-s3c.c16
-rw-r--r--drivers/rtc/rtc-sh.c42
-rw-r--r--drivers/rtc/rtc-tegra.c6
-rw-r--r--drivers/rtc/rtc-v3020.c2
-rw-r--r--drivers/s390/block/dasd.c10
-rw-r--r--drivers/s390/block/dasd_eckd.c10
-rw-r--r--drivers/s390/cio/device.c2
-rw-r--r--drivers/s390/cio/device_status.c7
-rw-r--r--drivers/s390/cio/io_sch.h1
-rw-r--r--drivers/s390/cio/qdio_main.c113
-rw-r--r--drivers/s390/virtio/Makefile6
-rw-r--r--drivers/s390/virtio/kvm_virtio.c4
-rw-r--r--drivers/scsi/Kconfig17
-rw-r--r--drivers/scsi/Makefile1
-rw-r--r--drivers/scsi/cxlflash/main.c10
-rw-r--r--drivers/scsi/fcoe/fcoe.c52
-rw-r--r--drivers/scsi/fcoe/fcoe.h1
-rw-r--r--drivers/scsi/ibmvscsi/ibmvfc.h2
-rw-r--r--drivers/scsi/ibmvscsi/ibmvscsi.h2
-rw-r--r--drivers/scsi/ibmvscsi/viosrp.h225
-rw-r--r--drivers/scsi/ibmvscsi_tgt/Makefile3
-rw-r--r--drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c4087
-rw-r--r--drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.h346
-rw-r--r--drivers/scsi/ibmvscsi_tgt/libsrp.c427
-rw-r--r--drivers/scsi/ibmvscsi_tgt/libsrp.h123
-rw-r--r--drivers/scsi/ipr.c15
-rw-r--r--drivers/scsi/ipr.h1
-rw-r--r--drivers/scsi/lpfc/lpfc_scsi.c2
-rw-r--r--drivers/scsi/lpfc/lpfc_sli.c15
-rw-r--r--drivers/ssb/driver_gpio.c22
-rw-r--r--drivers/staging/emxx_udc/Kconfig2
-rw-r--r--drivers/staging/emxx_udc/emxx_udc.c36
-rw-r--r--drivers/staging/lustre/lustre/llite/dcache.c2
-rw-r--r--drivers/staging/lustre/lustre/llite/statahead.c4
-rw-r--r--drivers/staging/media/Kconfig2
-rw-r--r--drivers/staging/media/cec/cec-adap.c2
-rw-r--r--drivers/target/iscsi/iscsi_target.c22
-rw-r--r--drivers/target/iscsi/iscsi_target_login.c5
-rw-r--r--drivers/target/target_core_device.c8
-rw-r--r--drivers/target/target_core_file.c5
-rw-r--r--drivers/target/target_core_iblock.c5
-rw-r--r--drivers/target/target_core_internal.h1
-rw-r--r--drivers/target/target_core_sbc.c2
-rw-r--r--drivers/target/target_core_transport.c94
-rw-r--r--drivers/target/tcm_fc/tfc_sess.c2
-rw-r--r--drivers/thermal/clock_cooling.c1
-rw-r--r--drivers/thermal/fair_share.c2
-rw-r--r--drivers/thermal/gov_bang_bang.c2
-rw-r--r--drivers/thermal/intel_pch_thermal.c60
-rw-r--r--drivers/thermal/intel_powerclamp.c11
-rw-r--r--drivers/thermal/power_allocator.c2
-rw-r--r--drivers/thermal/step_wise.c2
-rw-r--r--drivers/thermal/thermal_core.c10
-rw-r--r--drivers/thermal/thermal_hwmon.c2
-rw-r--r--drivers/tty/serial/ar933x_uart.c4
-rw-r--r--drivers/usb/serial/cp210x.c4
-rw-r--r--drivers/usb/serial/generic.c18
-rw-r--r--drivers/usb/serial/option.c3
-rw-r--r--drivers/usb/serial/ti_usb_3410_5052.c271
-rw-r--r--drivers/usb/serial/ti_usb_3410_5052.h259
-rw-r--r--drivers/vfio/pci/vfio_pci_intrs.c85
-rw-r--r--drivers/vhost/Kconfig18
-rw-r--r--drivers/vhost/Kconfig.vringh5
-rw-r--r--drivers/vhost/Makefile4
-rw-r--r--drivers/vhost/net.c67
-rw-r--r--drivers/vhost/test.c8
-rw-r--r--drivers/vhost/vhost.c927
-rw-r--r--drivers/vhost/vhost.h64
-rw-r--r--drivers/vhost/vsock.c723
-rw-r--r--drivers/video/fbdev/omap2/omapfb/omapfb-main.c12
-rw-r--r--drivers/video/fbdev/omap2/omapfb/omapfb.h3
-rw-r--r--drivers/virtio/virtio_balloon.c2
-rw-r--r--drivers/virtio/virtio_ring.c18
-rw-r--r--drivers/xen/swiotlb-xen.c14
509 files changed, 33828 insertions, 7242 deletions
diff --git a/drivers/Makefile b/drivers/Makefile
index 954824438fd1..53abb4a5f736 100644
--- a/drivers/Makefile
+++ b/drivers/Makefile
@@ -138,6 +138,7 @@ obj-$(CONFIG_OF) += of/
obj-$(CONFIG_SSB) += ssb/
obj-$(CONFIG_BCMA) += bcma/
obj-$(CONFIG_VHOST_RING) += vhost/
+obj-$(CONFIG_VHOST) += vhost/
obj-$(CONFIG_VLYNQ) += vlynq/
obj-$(CONFIG_STAGING) += staging/
obj-y += platform/
diff --git a/drivers/acpi/acpi_cmos_rtc.c b/drivers/acpi/acpi_cmos_rtc.c
index 81dc75033f15..0980a133916f 100644
--- a/drivers/acpi/acpi_cmos_rtc.c
+++ b/drivers/acpi/acpi_cmos_rtc.c
@@ -14,7 +14,7 @@
#include <linux/err.h>
#include <linux/kernel.h>
#include <linux/module.h>
-#include <asm-generic/rtc.h>
+#include <linux/mc146818rtc.h>
#include "internal.h"
diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c
index 148f4e5ca104..31abb0bdd4f2 100644
--- a/drivers/acpi/button.c
+++ b/drivers/acpi/button.c
@@ -232,8 +232,10 @@ remove_dev_dir:
acpi_device_dir(device) = NULL;
remove_lid_dir:
remove_proc_entry(ACPI_BUTTON_SUBCLASS_LID, acpi_button_dir);
+ acpi_lid_dir = NULL;
remove_button_dir:
remove_proc_entry(ACPI_BUTTON_CLASS, acpi_root_dir);
+ acpi_button_dir = NULL;
goto done;
}
@@ -250,7 +252,9 @@ static int acpi_button_remove_fs(struct acpi_device *device)
acpi_lid_dir);
acpi_device_dir(device) = NULL;
remove_proc_entry(ACPI_BUTTON_SUBCLASS_LID, acpi_button_dir);
+ acpi_lid_dir = NULL;
remove_proc_entry(ACPI_BUTTON_CLASS, acpi_root_dir);
+ acpi_button_dir = NULL;
return 0;
}
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 999a10914678..e7bd57cc550a 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -101,6 +101,7 @@ enum ec_command {
#define ACPI_EC_UDELAY_POLL 550 /* Wait 1ms for EC transaction polling */
#define ACPI_EC_CLEAR_MAX 100 /* Maximum number of events to query
* when trying to clear the EC */
+#define ACPI_EC_MAX_QUERIES 16 /* Maximum number of parallel queries */
enum {
EC_FLAGS_QUERY_PENDING, /* Query is pending */
@@ -121,6 +122,10 @@ static unsigned int ec_delay __read_mostly = ACPI_EC_DELAY;
module_param(ec_delay, uint, 0644);
MODULE_PARM_DESC(ec_delay, "Timeout(ms) waited until an EC command completes");
+static unsigned int ec_max_queries __read_mostly = ACPI_EC_MAX_QUERIES;
+module_param(ec_max_queries, uint, 0644);
+MODULE_PARM_DESC(ec_max_queries, "Maximum parallel _Qxx evaluations");
+
static bool ec_busy_polling __read_mostly;
module_param(ec_busy_polling, bool, 0644);
MODULE_PARM_DESC(ec_busy_polling, "Use busy polling to advance EC transaction");
@@ -174,6 +179,7 @@ static void acpi_ec_event_processor(struct work_struct *work);
struct acpi_ec *boot_ec, *first_ec;
EXPORT_SYMBOL(first_ec);
+static struct workqueue_struct *ec_query_wq;
static int EC_FLAGS_CLEAR_ON_RESUME; /* Needs acpi_ec_clear() on boot/resume */
static int EC_FLAGS_QUERY_HANDSHAKE; /* Needs QR_EC issued when SCI_EVT set */
@@ -1098,7 +1104,7 @@ static int acpi_ec_query(struct acpi_ec *ec, u8 *data)
* work queue execution.
*/
ec_dbg_evt("Query(0x%02x) scheduled", value);
- if (!schedule_work(&q->work)) {
+ if (!queue_work(ec_query_wq, &q->work)) {
ec_dbg_evt("Query(0x%02x) overlapped", value);
result = -EBUSY;
}
@@ -1660,15 +1666,41 @@ static struct acpi_driver acpi_ec_driver = {
},
};
+static inline int acpi_ec_query_init(void)
+{
+ if (!ec_query_wq) {
+ ec_query_wq = alloc_workqueue("kec_query", 0,
+ ec_max_queries);
+ if (!ec_query_wq)
+ return -ENODEV;
+ }
+ return 0;
+}
+
+static inline void acpi_ec_query_exit(void)
+{
+ if (ec_query_wq) {
+ destroy_workqueue(ec_query_wq);
+ ec_query_wq = NULL;
+ }
+}
+
int __init acpi_ec_init(void)
{
- int result = 0;
+ int result;
+ /* register workqueue for _Qxx evaluations */
+ result = acpi_ec_query_init();
+ if (result)
+ goto err_exit;
/* Now register the driver for the EC */
result = acpi_bus_register_driver(&acpi_ec_driver);
- if (result < 0)
- return -ENODEV;
+ if (result)
+ goto err_exit;
+err_exit:
+ if (result)
+ acpi_ec_query_exit();
return result;
}
@@ -1678,5 +1710,6 @@ static void __exit acpi_ec_exit(void)
{
acpi_bus_unregister_driver(&acpi_ec_driver);
+ acpi_ec_query_exit();
}
#endif /* 0 */
diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c
index 8c234dd9b8bc..80cc7c089a15 100644
--- a/drivers/acpi/nfit/core.c
+++ b/drivers/acpi/nfit/core.c
@@ -1527,11 +1527,12 @@ static u32 read_blk_stat(struct nfit_blk *nfit_blk, unsigned int bw)
{
struct nfit_blk_mmio *mmio = &nfit_blk->mmio[DCR];
u64 offset = nfit_blk->stat_offset + mmio->size * bw;
+ const u32 STATUS_MASK = 0x80000037;
if (mmio->num_lines)
offset = to_interleave_offset(offset, mmio);
- return readl(mmio->addr.base + offset);
+ return readl(mmio->addr.base + offset) & STATUS_MASK;
}
static void write_blk_ctl(struct nfit_blk *nfit_blk, unsigned int bw,
diff --git a/drivers/base/power/opp/core.c b/drivers/base/power/opp/core.c
index 7c04c87738a6..df0c70963d9e 100644
--- a/drivers/base/power/opp/core.c
+++ b/drivers/base/power/opp/core.c
@@ -402,6 +402,22 @@ struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev,
}
EXPORT_SYMBOL_GPL(dev_pm_opp_find_freq_exact);
+static noinline struct dev_pm_opp *_find_freq_ceil(struct opp_table *opp_table,
+ unsigned long *freq)
+{
+ struct dev_pm_opp *temp_opp, *opp = ERR_PTR(-ERANGE);
+
+ list_for_each_entry_rcu(temp_opp, &opp_table->opp_list, node) {
+ if (temp_opp->available && temp_opp->rate >= *freq) {
+ opp = temp_opp;
+ *freq = opp->rate;
+ break;
+ }
+ }
+
+ return opp;
+}
+
/**
* dev_pm_opp_find_freq_ceil() - Search for an rounded ceil freq
* @dev: device for which we do this operation
@@ -427,7 +443,6 @@ struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev,
unsigned long *freq)
{
struct opp_table *opp_table;
- struct dev_pm_opp *temp_opp, *opp = ERR_PTR(-ERANGE);
opp_rcu_lockdep_assert();
@@ -440,15 +455,7 @@ struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev,
if (IS_ERR(opp_table))
return ERR_CAST(opp_table);
- list_for_each_entry_rcu(temp_opp, &opp_table->opp_list, node) {
- if (temp_opp->available && temp_opp->rate >= *freq) {
- opp = temp_opp;
- *freq = opp->rate;
- break;
- }
- }
-
- return opp;
+ return _find_freq_ceil(opp_table, freq);
}
EXPORT_SYMBOL_GPL(dev_pm_opp_find_freq_ceil);
@@ -612,7 +619,7 @@ int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq)
return PTR_ERR(opp_table);
}
- old_opp = dev_pm_opp_find_freq_ceil(dev, &old_freq);
+ old_opp = _find_freq_ceil(opp_table, &old_freq);
if (!IS_ERR(old_opp)) {
ou_volt = old_opp->u_volt;
ou_volt_min = old_opp->u_volt_min;
@@ -622,7 +629,7 @@ int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq)
__func__, old_freq, PTR_ERR(old_opp));
}
- opp = dev_pm_opp_find_freq_ceil(dev, &freq);
+ opp = _find_freq_ceil(opp_table, &freq);
if (IS_ERR(opp)) {
ret = PTR_ERR(opp);
dev_err(dev, "%s: failed to find OPP for freq %lu (%d)\n",
diff --git a/drivers/base/power/trace.c b/drivers/base/power/trace.c
index a6975795e7f3..efec10b49d59 100644
--- a/drivers/base/power/trace.c
+++ b/drivers/base/power/trace.c
@@ -11,7 +11,7 @@
#include <linux/export.h>
#include <linux/rtc.h>
-#include <asm/rtc.h>
+#include <linux/mc146818rtc.h>
#include "power.h"
@@ -103,7 +103,7 @@ static int set_magic_time(unsigned int user, unsigned int file, unsigned int dev
n /= 24;
time.tm_min = (n % 20) * 3;
n /= 20;
- set_rtc_time(&time);
+ mc146818_set_time(&time);
return n ? -1 : 0;
}
@@ -112,7 +112,7 @@ static unsigned int read_magic_time(void)
struct rtc_time time;
unsigned int val;
- get_rtc_time(&time);
+ mc146818_get_time(&time);
pr_info("RTC time: %2d:%02d:%02d, date: %02d/%02d/%02d\n",
time.tm_hour, time.tm_min, time.tm_sec,
time.tm_mon + 1, time.tm_mday, time.tm_year % 100);
diff --git a/drivers/base/power/wakeup.c b/drivers/base/power/wakeup.c
index 5fb7718f256c..62e4de2aa8d1 100644
--- a/drivers/base/power/wakeup.c
+++ b/drivers/base/power/wakeup.c
@@ -334,10 +334,9 @@ void device_wakeup_arm_wake_irqs(void)
struct wakeup_source *ws;
rcu_read_lock();
- list_for_each_entry_rcu(ws, &wakeup_sources, entry) {
- if (ws->wakeirq)
- dev_pm_arm_wake_irq(ws->wakeirq);
- }
+ list_for_each_entry_rcu(ws, &wakeup_sources, entry)
+ dev_pm_arm_wake_irq(ws->wakeirq);
+
rcu_read_unlock();
}
@@ -351,10 +350,9 @@ void device_wakeup_disarm_wake_irqs(void)
struct wakeup_source *ws;
rcu_read_lock();
- list_for_each_entry_rcu(ws, &wakeup_sources, entry) {
- if (ws->wakeirq)
- dev_pm_disarm_wake_irq(ws->wakeirq);
- }
+ list_for_each_entry_rcu(ws, &wakeup_sources, entry)
+ dev_pm_disarm_wake_irq(ws->wakeirq);
+
rcu_read_unlock();
}
@@ -390,9 +388,7 @@ int device_wakeup_disable(struct device *dev)
return -EINVAL;
ws = device_wakeup_detach(dev);
- if (ws)
- wakeup_source_unregister(ws);
-
+ wakeup_source_unregister(ws);
return 0;
}
EXPORT_SYMBOL_GPL(device_wakeup_disable);
diff --git a/drivers/block/brd.c b/drivers/block/brd.c
index 3022dad24071..0c76d4016eeb 100644
--- a/drivers/block/brd.c
+++ b/drivers/block/brd.c
@@ -300,20 +300,20 @@ static void copy_from_brd(void *dst, struct brd_device *brd,
* Process a single bvec of a bio.
*/
static int brd_do_bvec(struct brd_device *brd, struct page *page,
- unsigned int len, unsigned int off, int rw,
+ unsigned int len, unsigned int off, bool is_write,
sector_t sector)
{
void *mem;
int err = 0;
- if (rw != READ) {
+ if (is_write) {
err = copy_to_brd_setup(brd, sector, len);
if (err)
goto out;
}
mem = kmap_atomic(page);
- if (rw == READ) {
+ if (!is_write) {
copy_from_brd(mem + off, brd, sector, len);
flush_dcache_page(page);
} else {
@@ -330,7 +330,6 @@ static blk_qc_t brd_make_request(struct request_queue *q, struct bio *bio)
{
struct block_device *bdev = bio->bi_bdev;
struct brd_device *brd = bdev->bd_disk->private_data;
- int rw;
struct bio_vec bvec;
sector_t sector;
struct bvec_iter iter;
@@ -347,14 +346,12 @@ static blk_qc_t brd_make_request(struct request_queue *q, struct bio *bio)
goto out;
}
- rw = bio_data_dir(bio);
-
bio_for_each_segment(bvec, bio, iter) {
unsigned int len = bvec.bv_len;
int err;
- err = brd_do_bvec(brd, bvec.bv_page, len,
- bvec.bv_offset, rw, sector);
+ err = brd_do_bvec(brd, bvec.bv_page, len, bvec.bv_offset,
+ op_is_write(bio_op(bio)), sector);
if (err)
goto io_error;
sector += len >> SECTOR_SHIFT;
@@ -369,11 +366,11 @@ io_error:
}
static int brd_rw_page(struct block_device *bdev, sector_t sector,
- struct page *page, int rw)
+ struct page *page, bool is_write)
{
struct brd_device *brd = bdev->bd_disk->private_data;
- int err = brd_do_bvec(brd, page, PAGE_SIZE, 0, rw, sector);
- page_endio(page, rw & WRITE, err);
+ int err = brd_do_bvec(brd, page, PAGE_SIZE, 0, is_write, sector);
+ page_endio(page, is_write, err);
return err;
}
diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index 0501ae0c517b..100be556e613 100644
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -1663,13 +1663,13 @@ static u32 bio_flags_to_wire(struct drbd_connection *connection,
struct bio *bio)
{
if (connection->agreed_pro_version >= 95)
- return (bio->bi_rw & REQ_SYNC ? DP_RW_SYNC : 0) |
- (bio->bi_rw & REQ_FUA ? DP_FUA : 0) |
- (bio->bi_rw & REQ_PREFLUSH ? DP_FLUSH : 0) |
+ return (bio->bi_opf & REQ_SYNC ? DP_RW_SYNC : 0) |
+ (bio->bi_opf & REQ_FUA ? DP_FUA : 0) |
+ (bio->bi_opf & REQ_PREFLUSH ? DP_FLUSH : 0) |
(bio_op(bio) == REQ_OP_WRITE_SAME ? DP_WSAME : 0) |
(bio_op(bio) == REQ_OP_DISCARD ? DP_DISCARD : 0);
else
- return bio->bi_rw & REQ_SYNC ? DP_RW_SYNC : 0;
+ return bio->bi_opf & REQ_SYNC ? DP_RW_SYNC : 0;
}
/* Used to send write or TRIM aka REQ_DISCARD requests
diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c
index df45713dfbe8..942384f34e22 100644
--- a/drivers/block/drbd/drbd_receiver.c
+++ b/drivers/block/drbd/drbd_receiver.c
@@ -1564,7 +1564,7 @@ static void drbd_issue_peer_wsame(struct drbd_device *device,
* drbd_submit_peer_request()
* @device: DRBD device.
* @peer_req: peer request
- * @rw: flag field, see bio->bi_rw
+ * @rw: flag field, see bio->bi_opf
*
* May spread the pages to multiple bios,
* depending on bio_add_page restrictions.
diff --git a/drivers/block/drbd/drbd_req.c b/drivers/block/drbd/drbd_req.c
index 66b8e4bb74d8..de279fe4e4fd 100644
--- a/drivers/block/drbd/drbd_req.c
+++ b/drivers/block/drbd/drbd_req.c
@@ -288,7 +288,7 @@ void drbd_req_complete(struct drbd_request *req, struct bio_and_error *m)
*/
if (!ok &&
bio_op(req->master_bio) == REQ_OP_READ &&
- !(req->master_bio->bi_rw & REQ_RAHEAD) &&
+ !(req->master_bio->bi_opf & REQ_RAHEAD) &&
!list_empty(&req->tl_requests))
req->rq_state |= RQ_POSTPONED;
@@ -1137,7 +1137,7 @@ static int drbd_process_write_request(struct drbd_request *req)
* replicating, in which case there is no point. */
if (unlikely(req->i.size == 0)) {
/* The only size==0 bios we expect are empty flushes. */
- D_ASSERT(device, req->master_bio->bi_rw & REQ_PREFLUSH);
+ D_ASSERT(device, req->master_bio->bi_opf & REQ_PREFLUSH);
if (remote)
_req_mod(req, QUEUE_AS_DRBD_BARRIER);
return remote;
@@ -1176,7 +1176,7 @@ drbd_submit_req_private_bio(struct drbd_request *req)
if (bio_op(bio) != REQ_OP_READ)
type = DRBD_FAULT_DT_WR;
- else if (bio->bi_rw & REQ_RAHEAD)
+ else if (bio->bi_opf & REQ_RAHEAD)
type = DRBD_FAULT_DT_RA;
else
type = DRBD_FAULT_DT_RD;
diff --git a/drivers/block/drbd/drbd_worker.c b/drivers/block/drbd/drbd_worker.c
index 35dbb3dca47e..c6755c9a0aea 100644
--- a/drivers/block/drbd/drbd_worker.c
+++ b/drivers/block/drbd/drbd_worker.c
@@ -256,7 +256,7 @@ void drbd_request_endio(struct bio *bio)
what = DISCARD_COMPLETED_WITH_ERROR;
break;
case REQ_OP_READ:
- if (bio->bi_rw & REQ_RAHEAD)
+ if (bio->bi_opf & REQ_RAHEAD)
what = READ_AHEAD_COMPLETED_WITH_ERROR;
else
what = READ_COMPLETED_WITH_ERROR;
diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c
index c557057fe8ae..b71a9c767009 100644
--- a/drivers/block/floppy.c
+++ b/drivers/block/floppy.c
@@ -3663,11 +3663,6 @@ static int floppy_open(struct block_device *bdev, fmode_t mode)
opened_bdev[drive] = bdev;
- if (!(mode & (FMODE_READ|FMODE_WRITE))) {
- res = -EINVAL;
- goto out;
- }
-
res = -ENXIO;
if (!floppy_track_buffer) {
@@ -3711,13 +3706,15 @@ static int floppy_open(struct block_device *bdev, fmode_t mode)
if (UFDCS->rawcmd == 1)
UFDCS->rawcmd = 2;
- UDRS->last_checked = 0;
- clear_bit(FD_OPEN_SHOULD_FAIL_BIT, &UDRS->flags);
- check_disk_change(bdev);
- if (test_bit(FD_DISK_CHANGED_BIT, &UDRS->flags))
- goto out;
- if (test_bit(FD_OPEN_SHOULD_FAIL_BIT, &UDRS->flags))
- goto out;
+ if (mode & (FMODE_READ|FMODE_WRITE)) {
+ UDRS->last_checked = 0;
+ clear_bit(FD_OPEN_SHOULD_FAIL_BIT, &UDRS->flags);
+ check_disk_change(bdev);
+ if (test_bit(FD_DISK_CHANGED_BIT, &UDRS->flags))
+ goto out;
+ if (test_bit(FD_OPEN_SHOULD_FAIL_BIT, &UDRS->flags))
+ goto out;
+ }
res = -EROFS;
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 075377eee0c0..c9f2107f7095 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -510,14 +510,10 @@ static int lo_rw_aio(struct loop_device *lo, struct loop_cmd *cmd,
return 0;
}
-
-static inline int lo_rw_simple(struct loop_device *lo,
- struct request *rq, loff_t pos, bool rw)
+static int do_req_filebacked(struct loop_device *lo, struct request *rq)
{
struct loop_cmd *cmd = blk_mq_rq_to_pdu(rq);
-
- if (cmd->use_aio)
- return lo_rw_aio(lo, cmd, pos, rw);
+ loff_t pos = ((loff_t) blk_rq_pos(rq) << 9) + lo->lo_offset;
/*
* lo_write_simple and lo_read_simple should have been covered
@@ -528,37 +524,30 @@ static inline int lo_rw_simple(struct loop_device *lo,
* of the req at one time. And direct read IO doesn't need to
* run flush_dcache_page().
*/
- if (rw == WRITE)
- return lo_write_simple(lo, rq, pos);
- else
- return lo_read_simple(lo, rq, pos);
-}
-
-static int do_req_filebacked(struct loop_device *lo, struct request *rq)
-{
- loff_t pos;
- int ret;
-
- pos = ((loff_t) blk_rq_pos(rq) << 9) + lo->lo_offset;
-
- if (op_is_write(req_op(rq))) {
- if (req_op(rq) == REQ_OP_FLUSH)
- ret = lo_req_flush(lo, rq);
- else if (req_op(rq) == REQ_OP_DISCARD)
- ret = lo_discard(lo, rq, pos);
- else if (lo->transfer)
- ret = lo_write_transfer(lo, rq, pos);
+ switch (req_op(rq)) {
+ case REQ_OP_FLUSH:
+ return lo_req_flush(lo, rq);
+ case REQ_OP_DISCARD:
+ return lo_discard(lo, rq, pos);
+ case REQ_OP_WRITE:
+ if (lo->transfer)
+ return lo_write_transfer(lo, rq, pos);
+ else if (cmd->use_aio)
+ return lo_rw_aio(lo, cmd, pos, WRITE);
else
- ret = lo_rw_simple(lo, rq, pos, WRITE);
-
- } else {
+ return lo_write_simple(lo, rq, pos);
+ case REQ_OP_READ:
if (lo->transfer)
- ret = lo_read_transfer(lo, rq, pos);
+ return lo_read_transfer(lo, rq, pos);
+ else if (cmd->use_aio)
+ return lo_rw_aio(lo, cmd, pos, READ);
else
- ret = lo_rw_simple(lo, rq, pos, READ);
+ return lo_read_simple(lo, rq, pos);
+ default:
+ WARN_ON_ONCE(1);
+ return -EIO;
+ break;
}
-
- return ret;
}
struct switch_request {
@@ -1659,11 +1648,15 @@ static int loop_queue_rq(struct blk_mq_hw_ctx *hctx,
if (lo->lo_state != Lo_bound)
return -EIO;
- if (lo->use_dio && (req_op(cmd->rq) != REQ_OP_FLUSH ||
- req_op(cmd->rq) == REQ_OP_DISCARD))
- cmd->use_aio = true;
- else
+ switch (req_op(cmd->rq)) {
+ case REQ_OP_FLUSH:
+ case REQ_OP_DISCARD:
cmd->use_aio = false;
+ break;
+ default:
+ cmd->use_aio = lo->use_dio;
+ break;
+ }
queue_kthread_work(&lo->worker, &cmd->work);
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index 6f55b262b5ce..a9e398019f38 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -451,14 +451,9 @@ static int nbd_thread_recv(struct nbd_device *nbd, struct block_device *bdev)
sk_set_memalloc(nbd->sock->sk);
- nbd->task_recv = current;
-
ret = device_create_file(disk_to_dev(nbd->disk), &pid_attr);
if (ret) {
dev_err(disk_to_dev(nbd->disk), "device_create_file failed!\n");
-
- nbd->task_recv = NULL;
-
return ret;
}
@@ -477,9 +472,6 @@ static int nbd_thread_recv(struct nbd_device *nbd, struct block_device *bdev)
nbd_size_clear(nbd, bdev);
device_remove_file(disk_to_dev(nbd->disk), &pid_attr);
-
- nbd->task_recv = NULL;
-
return ret;
}
@@ -788,6 +780,8 @@ static int __nbd_ioctl(struct block_device *bdev, struct nbd_device *nbd,
if (!nbd->sock)
return -EINVAL;
+ /* We have to claim the device under the lock */
+ nbd->task_recv = current;
mutex_unlock(&nbd->tx_lock);
nbd_parse_flags(nbd, bdev);
@@ -796,6 +790,7 @@ static int __nbd_ioctl(struct block_device *bdev, struct nbd_device *nbd,
nbd_name(nbd));
if (IS_ERR(thread)) {
mutex_lock(&nbd->tx_lock);
+ nbd->task_recv = NULL;
return PTR_ERR(thread);
}
@@ -805,6 +800,7 @@ static int __nbd_ioctl(struct block_device *bdev, struct nbd_device *nbd,
kthread_stop(thread);
mutex_lock(&nbd->tx_lock);
+ nbd->task_recv = NULL;
sock_shutdown(nbd);
nbd_clear_que(nbd);
diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
index 9393bc730acf..90fa4ac149db 100644
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -1157,7 +1157,7 @@ static int pkt_start_recovery(struct packet_data *pkt)
bio_reset(pkt->bio);
pkt->bio->bi_bdev = pd->bdev;
- pkt->bio->bi_rw = REQ_WRITE;
+ bio_set_op_attrs(pkt->bio, REQ_OP_WRITE, 0);
pkt->bio->bi_iter.bi_sector = new_sector;
pkt->bio->bi_iter.bi_size = pkt->frames * CD_FRAMESIZE;
pkt->bio->bi_vcnt = pkt->frames;
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index 1a04af6d2421..6c6519f6492a 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -3950,6 +3950,7 @@ static void rbd_dev_release(struct device *dev)
bool need_put = !!rbd_dev->opts;
ceph_oid_destroy(&rbd_dev->header_oid);
+ ceph_oloc_destroy(&rbd_dev->header_oloc);
rbd_put_client(rbd_dev->rbd_client);
rbd_spec_put(rbd_dev->spec);
@@ -5336,15 +5337,6 @@ static ssize_t do_rbd_add(struct bus_type *bus,
}
spec->pool_id = (u64)rc;
- /* The ceph file layout needs to fit pool id in 32 bits */
-
- if (spec->pool_id > (u64)U32_MAX) {
- rbd_warn(NULL, "pool id too large (%llu > %u)",
- (unsigned long long)spec->pool_id, U32_MAX);
- rc = -EIO;
- goto err_out_client;
- }
-
rbd_dev = rbd_dev_create(rbdc, spec, rbd_opts);
if (!rbd_dev) {
rc = -ENOMEM;
diff --git a/drivers/block/umem.c b/drivers/block/umem.c
index d0a3e6d4515f..be90e15854ed 100644
--- a/drivers/block/umem.c
+++ b/drivers/block/umem.c
@@ -535,7 +535,7 @@ static blk_qc_t mm_make_request(struct request_queue *q, struct bio *bio)
*card->biotail = bio;
bio->bi_next = NULL;
card->biotail = &bio->bi_next;
- if (bio->bi_rw & REQ_SYNC || !mm_check_plugged(card))
+ if (bio->bi_opf & REQ_SYNC || !mm_check_plugged(card))
activate(card);
spin_unlock_irq(&card->lock);
diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c
index 1523e05c46fc..93b1aaa5ba3b 100644
--- a/drivers/block/virtio_blk.c
+++ b/drivers/block/virtio_blk.c
@@ -391,22 +391,16 @@ static int init_vq(struct virtio_blk *vblk)
num_vqs = 1;
vblk->vqs = kmalloc(sizeof(*vblk->vqs) * num_vqs, GFP_KERNEL);
- if (!vblk->vqs) {
- err = -ENOMEM;
- goto out;
- }
+ if (!vblk->vqs)
+ return -ENOMEM;
names = kmalloc(sizeof(*names) * num_vqs, GFP_KERNEL);
- if (!names)
- goto err_names;
-
callbacks = kmalloc(sizeof(*callbacks) * num_vqs, GFP_KERNEL);
- if (!callbacks)
- goto err_callbacks;
-
vqs = kmalloc(sizeof(*vqs) * num_vqs, GFP_KERNEL);
- if (!vqs)
- goto err_vqs;
+ if (!names || !callbacks || !vqs) {
+ err = -ENOMEM;
+ goto out;
+ }
for (i = 0; i < num_vqs; i++) {
callbacks[i] = virtblk_done;
@@ -417,7 +411,7 @@ static int init_vq(struct virtio_blk *vblk)
/* Discover virtqueues and write information to configuration. */
err = vdev->config->find_vqs(vdev, num_vqs, vqs, callbacks, names);
if (err)
- goto err_find_vqs;
+ goto out;
for (i = 0; i < num_vqs; i++) {
spin_lock_init(&vblk->vqs[i].lock);
@@ -425,16 +419,12 @@ static int init_vq(struct virtio_blk *vblk)
}
vblk->num_vqs = num_vqs;
- err_find_vqs:
+out:
kfree(vqs);
- err_vqs:
kfree(callbacks);
- err_callbacks:
kfree(names);
- err_names:
if (err)
kfree(vblk->vqs);
- out:
return err;
}
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index 7454cf188c8e..04365b17ee67 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -843,15 +843,16 @@ static void zram_bio_discard(struct zram *zram, u32 index,
}
static int zram_bvec_rw(struct zram *zram, struct bio_vec *bvec, u32 index,
- int offset, int rw)
+ int offset, bool is_write)
{
unsigned long start_time = jiffies;
+ int rw_acct = is_write ? REQ_OP_WRITE : REQ_OP_READ;
int ret;
- generic_start_io_acct(rw, bvec->bv_len >> SECTOR_SHIFT,
+ generic_start_io_acct(rw_acct, bvec->bv_len >> SECTOR_SHIFT,
&zram->disk->part0);
- if (rw == READ) {
+ if (!is_write) {
atomic64_inc(&zram->stats.num_reads);
ret = zram_bvec_read(zram, bvec, index, offset);
} else {
@@ -859,10 +860,10 @@ static int zram_bvec_rw(struct zram *zram, struct bio_vec *bvec, u32 index,
ret = zram_bvec_write(zram, bvec, index, offset);
}
- generic_end_io_acct(rw, &zram->disk->part0, start_time);
+ generic_end_io_acct(rw_acct, &zram->disk->part0, start_time);
if (unlikely(ret)) {
- if (rw == READ)
+ if (!is_write)
atomic64_inc(&zram->stats.failed_reads);
else
atomic64_inc(&zram->stats.failed_writes);
@@ -873,7 +874,7 @@ static int zram_bvec_rw(struct zram *zram, struct bio_vec *bvec, u32 index,
static void __zram_make_request(struct zram *zram, struct bio *bio)
{
- int offset, rw;
+ int offset;
u32 index;
struct bio_vec bvec;
struct bvec_iter iter;
@@ -888,7 +889,6 @@ static void __zram_make_request(struct zram *zram, struct bio *bio)
return;
}
- rw = bio_data_dir(bio);
bio_for_each_segment(bvec, bio, iter) {
int max_transfer_size = PAGE_SIZE - offset;
@@ -903,15 +903,18 @@ static void __zram_make_request(struct zram *zram, struct bio *bio)
bv.bv_len = max_transfer_size;
bv.bv_offset = bvec.bv_offset;
- if (zram_bvec_rw(zram, &bv, index, offset, rw) < 0)
+ if (zram_bvec_rw(zram, &bv, index, offset,
+ op_is_write(bio_op(bio))) < 0)
goto out;
bv.bv_len = bvec.bv_len - max_transfer_size;
bv.bv_offset += max_transfer_size;
- if (zram_bvec_rw(zram, &bv, index + 1, 0, rw) < 0)
+ if (zram_bvec_rw(zram, &bv, index + 1, 0,
+ op_is_write(bio_op(bio))) < 0)
goto out;
} else
- if (zram_bvec_rw(zram, &bvec, index, offset, rw) < 0)
+ if (zram_bvec_rw(zram, &bvec, index, offset,
+ op_is_write(bio_op(bio))) < 0)
goto out;
update_position(&index, &offset, &bvec);
@@ -968,7 +971,7 @@ static void zram_slot_free_notify(struct block_device *bdev,
}
static int zram_rw_page(struct block_device *bdev, sector_t sector,
- struct page *page, int rw)
+ struct page *page, bool is_write)
{
int offset, err = -EIO;
u32 index;
@@ -992,7 +995,7 @@ static int zram_rw_page(struct block_device *bdev, sector_t sector,
bv.bv_len = PAGE_SIZE;
bv.bv_offset = 0;
- err = zram_bvec_rw(zram, &bv, index, offset, rw);
+ err = zram_bvec_rw(zram, &bv, index, offset, is_write);
put_zram:
zram_meta_put(zram);
out:
@@ -1005,7 +1008,7 @@ out:
* (e.g., SetPageError, set_page_dirty and extra works).
*/
if (err == 0)
- page_endio(page, rw, 0);
+ page_endio(page, is_write, 0);
return err;
}
diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
index fdb8f3e10b6f..dcc09739a54e 100644
--- a/drivers/char/Kconfig
+++ b/drivers/char/Kconfig
@@ -293,7 +293,7 @@ if RTC_LIB=n
config RTC
tristate "Enhanced Real Time Clock Support (legacy PC RTC driver)"
- depends on ALPHA || (MIPS && MACH_LOONGSON64) || MN10300
+ depends on ALPHA || (MIPS && MACH_LOONGSON64)
---help---
If you say Y here and create a character special file /dev/rtc with
major number 10 and minor number 135 using mknod ("man mknod"), you
@@ -339,32 +339,6 @@ config JS_RTC
To compile this driver as a module, choose M here: the
module will be called js-rtc.
-config GEN_RTC
- tristate "Generic /dev/rtc emulation"
- depends on RTC!=y
- depends on ALPHA || M68K || MN10300 || PARISC || PPC || X86
- ---help---
- If you say Y here and create a character special file /dev/rtc with
- major number 10 and minor number 135 using mknod ("man mknod"), you
- will get access to the real time clock (or hardware clock) built
- into your computer.
-
- It reports status information via the file /proc/driver/rtc and its
- behaviour is set by various ioctls on /dev/rtc. If you enable the
- "extended RTC operation" below it will also provide an emulation
- for RTC_UIE which is required by some programs and may improve
- precision in some cases.
-
- To compile this driver as a module, choose M here: the
- module will be called genrtc.
-
-config GEN_RTC_X
- bool "Extended RTC operation"
- depends on GEN_RTC
- help
- Provides an emulation for RTC_UIE which is required by some programs
- and may improve precision of the generic RTC support in some cases.
-
config EFI_RTC
bool "EFI Real Time Clock Services"
depends on IA64
diff --git a/drivers/char/Makefile b/drivers/char/Makefile
index 55d16bf3ccc5..6e6c244a66a0 100644
--- a/drivers/char/Makefile
+++ b/drivers/char/Makefile
@@ -25,7 +25,6 @@ obj-$(CONFIG_APPLICOM) += applicom.o
obj-$(CONFIG_SONYPI) += sonypi.o
obj-$(CONFIG_RTC) += rtc.o
obj-$(CONFIG_HPET) += hpet.o
-obj-$(CONFIG_GEN_RTC) += genrtc.o
obj-$(CONFIG_EFI_RTC) += efirtc.o
obj-$(CONFIG_DS1302) += ds1302.o
obj-$(CONFIG_XILINX_HWICAP) += xilinx_hwicap/
diff --git a/drivers/char/genrtc.c b/drivers/char/genrtc.c
deleted file mode 100644
index 4f943759d376..000000000000
--- a/drivers/char/genrtc.c
+++ /dev/null
@@ -1,539 +0,0 @@
-/*
- * Real Time Clock interface for
- * - q40 and other m68k machines,
- * - HP PARISC machines
- * - PowerPC machines
- * emulate some RTC irq capabilities in software
- *
- * Copyright (C) 1999 Richard Zidlicky
- *
- * based on Paul Gortmaker's rtc.c device and
- * Sam Creasey Generic rtc driver
- *
- * This driver allows use of the real time clock (built into
- * nearly all computers) from user space. It exports the /dev/rtc
- * interface supporting various ioctl() and also the /proc/driver/rtc
- * pseudo-file for status information.
- *
- * The ioctls can be used to set the interrupt behaviour where
- * supported.
- *
- * The /dev/rtc interface will block on reads until an interrupt
- * has been received. If a RTC interrupt has already happened,
- * it will output an unsigned long and then block. The output value
- * contains the interrupt status in the low byte and the number of
- * interrupts since the last read in the remaining high bytes. The
- * /dev/rtc interface can also be used with the select(2) call.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
-
- * 1.01 fix for 2.3.X rz@linux-m68k.org
- * 1.02 merged with code from genrtc.c rz@linux-m68k.org
- * 1.03 make it more portable zippel@linux-m68k.org
- * 1.04 removed useless timer code rz@linux-m68k.org
- * 1.05 portable RTC_UIE emulation rz@linux-m68k.org
- * 1.06 set_rtc_time can return an error trini@kernel.crashing.org
- * 1.07 ported to HP PARISC (hppa) Helge Deller <deller@gmx.de>
- */
-
-#define RTC_VERSION "1.07"
-
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <linux/errno.h>
-#include <linux/miscdevice.h>
-#include <linux/fcntl.h>
-
-#include <linux/rtc.h>
-#include <linux/init.h>
-#include <linux/poll.h>
-#include <linux/proc_fs.h>
-#include <linux/seq_file.h>
-#include <linux/mutex.h>
-#include <linux/workqueue.h>
-
-#include <asm/uaccess.h>
-#include <asm/rtc.h>
-
-/*
- * We sponge a minor off of the misc major. No need slurping
- * up another valuable major dev number for this. If you add
- * an ioctl, make sure you don't conflict with SPARC's RTC
- * ioctls.
- */
-
-static DEFINE_MUTEX(gen_rtc_mutex);
-static DECLARE_WAIT_QUEUE_HEAD(gen_rtc_wait);
-
-/*
- * Bits in gen_rtc_status.
- */
-
-#define RTC_IS_OPEN 0x01 /* means /dev/rtc is in use */
-
-static unsigned char gen_rtc_status; /* bitmapped status byte. */
-static unsigned long gen_rtc_irq_data; /* our output to the world */
-
-/* months start at 0 now */
-static unsigned char days_in_mo[] =
-{31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
-
-static int irq_active;
-
-#ifdef CONFIG_GEN_RTC_X
-static struct work_struct genrtc_task;
-static struct timer_list timer_task;
-
-static unsigned int oldsecs;
-static int lostint;
-static unsigned long tt_exp;
-
-static void gen_rtc_timer(unsigned long data);
-
-static volatile int stask_active; /* schedule_work */
-static volatile int ttask_active; /* timer_task */
-static int stop_rtc_timers; /* don't requeue tasks */
-static DEFINE_SPINLOCK(gen_rtc_lock);
-
-static void gen_rtc_interrupt(unsigned long arg);
-
-/*
- * Routine to poll RTC seconds field for change as often as possible,
- * after first RTC_UIE use timer to reduce polling
- */
-static void genrtc_troutine(struct work_struct *work)
-{
- unsigned int tmp = get_rtc_ss();
-
- if (stop_rtc_timers) {
- stask_active = 0;
- return;
- }
-
- if (oldsecs != tmp){
- oldsecs = tmp;
-
- timer_task.function = gen_rtc_timer;
- timer_task.expires = jiffies + HZ - (HZ/10);
- tt_exp=timer_task.expires;
- ttask_active=1;
- stask_active=0;
- add_timer(&timer_task);
-
- gen_rtc_interrupt(0);
- } else if (schedule_work(&genrtc_task) == 0)
- stask_active = 0;
-}
-
-static void gen_rtc_timer(unsigned long data)
-{
- lostint = get_rtc_ss() - oldsecs ;
- if (lostint<0)
- lostint = 60 - lostint;
- if (time_after(jiffies, tt_exp))
- printk(KERN_INFO "genrtc: timer task delayed by %ld jiffies\n",
- jiffies-tt_exp);
- ttask_active=0;
- stask_active=1;
- if ((schedule_work(&genrtc_task) == 0))
- stask_active = 0;
-}
-
-/*
- * call gen_rtc_interrupt function to signal an RTC_UIE,
- * arg is unused.
- * Could be invoked either from a real interrupt handler or
- * from some routine that periodically (eg 100HZ) monitors
- * whether RTC_SECS changed
- */
-static void gen_rtc_interrupt(unsigned long arg)
-{
- /* We store the status in the low byte and the number of
- * interrupts received since the last read in the remainder
- * of rtc_irq_data. */
-
- gen_rtc_irq_data += 0x100;
- gen_rtc_irq_data &= ~0xff;
- gen_rtc_irq_data |= RTC_UIE;
-
- if (lostint){
- printk("genrtc: system delaying clock ticks?\n");
- /* increment count so that userspace knows something is wrong */
- gen_rtc_irq_data += ((lostint-1)<<8);
- lostint = 0;
- }
-
- wake_up_interruptible(&gen_rtc_wait);
-}
-
-/*
- * Now all the various file operations that we export.
- */
-static ssize_t gen_rtc_read(struct file *file, char __user *buf,
- size_t count, loff_t *ppos)
-{
- unsigned long data;
- ssize_t retval;
-
- if (count != sizeof (unsigned int) && count != sizeof (unsigned long))
- return -EINVAL;
-
- if (file->f_flags & O_NONBLOCK && !gen_rtc_irq_data)
- return -EAGAIN;
-
- retval = wait_event_interruptible(gen_rtc_wait,
- (data = xchg(&gen_rtc_irq_data, 0)));
- if (retval)
- goto out;
-
- /* first test allows optimizer to nuke this case for 32-bit machines */
- if (sizeof (int) != sizeof (long) && count == sizeof (unsigned int)) {
- unsigned int uidata = data;
- retval = put_user(uidata, (unsigned int __user *)buf) ?:
- sizeof(unsigned int);
- }
- else {
- retval = put_user(data, (unsigned long __user *)buf) ?:
- sizeof(unsigned long);
- }
-out:
- return retval;
-}
-
-static unsigned int gen_rtc_poll(struct file *file,
- struct poll_table_struct *wait)
-{
- poll_wait(file, &gen_rtc_wait, wait);
- if (gen_rtc_irq_data != 0)
- return POLLIN | POLLRDNORM;
- return 0;
-}
-
-#endif
-
-/*
- * Used to disable/enable interrupts, only RTC_UIE supported
- * We also clear out any old irq data after an ioctl() that
- * meddles with the interrupt enable/disable bits.
- */
-
-static inline void gen_clear_rtc_irq_bit(unsigned char bit)
-{
-#ifdef CONFIG_GEN_RTC_X
- stop_rtc_timers = 1;
- if (ttask_active){
- del_timer_sync(&timer_task);
- ttask_active = 0;
- }
- while (stask_active)
- schedule();
-
- spin_lock(&gen_rtc_lock);
- irq_active = 0;
- spin_unlock(&gen_rtc_lock);
-#endif
-}
-
-static inline int gen_set_rtc_irq_bit(unsigned char bit)
-{
-#ifdef CONFIG_GEN_RTC_X
- spin_lock(&gen_rtc_lock);
- if ( !irq_active ) {
- irq_active = 1;
- stop_rtc_timers = 0;
- lostint = 0;
- INIT_WORK(&genrtc_task, genrtc_troutine);
- oldsecs = get_rtc_ss();
- init_timer(&timer_task);
-
- stask_active = 1;
- if (schedule_work(&genrtc_task) == 0){
- stask_active = 0;
- }
- }
- spin_unlock(&gen_rtc_lock);
- gen_rtc_irq_data = 0;
- return 0;
-#else
- return -EINVAL;
-#endif
-}
-
-static int gen_rtc_ioctl(struct file *file,
- unsigned int cmd, unsigned long arg)
-{
- struct rtc_time wtime;
- struct rtc_pll_info pll;
- void __user *argp = (void __user *)arg;
-
- switch (cmd) {
-
- case RTC_PLL_GET:
- if (get_rtc_pll(&pll))
- return -EINVAL;
- else
- return copy_to_user(argp, &pll, sizeof pll) ? -EFAULT : 0;
-
- case RTC_PLL_SET:
- if (!capable(CAP_SYS_TIME))
- return -EACCES;
- if (copy_from_user(&pll, argp, sizeof(pll)))
- return -EFAULT;
- return set_rtc_pll(&pll);
-
- case RTC_UIE_OFF: /* disable ints from RTC updates. */
- gen_clear_rtc_irq_bit(RTC_UIE);
- return 0;
-
- case RTC_UIE_ON: /* enable ints for RTC updates. */
- return gen_set_rtc_irq_bit(RTC_UIE);
-
- case RTC_RD_TIME: /* Read the time/date from RTC */
- /* this doesn't get week-day, who cares */
- memset(&wtime, 0, sizeof(wtime));
- get_rtc_time(&wtime);
-
- return copy_to_user(argp, &wtime, sizeof(wtime)) ? -EFAULT : 0;
-
- case RTC_SET_TIME: /* Set the RTC */
- {
- int year;
- unsigned char leap_yr;
-
- if (!capable(CAP_SYS_TIME))
- return -EACCES;
-
- if (copy_from_user(&wtime, argp, sizeof(wtime)))
- return -EFAULT;
-
- year = wtime.tm_year + 1900;
- leap_yr = ((!(year % 4) && (year % 100)) ||
- !(year % 400));
-
- if ((wtime.tm_mon < 0 || wtime.tm_mon > 11) || (wtime.tm_mday < 1))
- return -EINVAL;
-
- if (wtime.tm_mday < 0 || wtime.tm_mday >
- (days_in_mo[wtime.tm_mon] + ((wtime.tm_mon == 1) && leap_yr)))
- return -EINVAL;
-
- if (wtime.tm_hour < 0 || wtime.tm_hour >= 24 ||
- wtime.tm_min < 0 || wtime.tm_min >= 60 ||
- wtime.tm_sec < 0 || wtime.tm_sec >= 60)
- return -EINVAL;
-
- return set_rtc_time(&wtime);
- }
- }
-
- return -EINVAL;
-}
-
-static long gen_rtc_unlocked_ioctl(struct file *file, unsigned int cmd,
- unsigned long arg)
-{
- int ret;
-
- mutex_lock(&gen_rtc_mutex);
- ret = gen_rtc_ioctl(file, cmd, arg);
- mutex_unlock(&gen_rtc_mutex);
-
- return ret;
-}
-
-/*
- * We enforce only one user at a time here with the open/close.
- * Also clear the previous interrupt data on an open, and clean
- * up things on a close.
- */
-
-static int gen_rtc_open(struct inode *inode, struct file *file)
-{
- mutex_lock(&gen_rtc_mutex);
- if (gen_rtc_status & RTC_IS_OPEN) {
- mutex_unlock(&gen_rtc_mutex);
- return -EBUSY;
- }
-
- gen_rtc_status |= RTC_IS_OPEN;
- gen_rtc_irq_data = 0;
- irq_active = 0;
- mutex_unlock(&gen_rtc_mutex);
-
- return 0;
-}
-
-static int gen_rtc_release(struct inode *inode, struct file *file)
-{
- /*
- * Turn off all interrupts once the device is no longer
- * in use and clear the data.
- */
-
- gen_clear_rtc_irq_bit(RTC_PIE|RTC_AIE|RTC_UIE);
-
- gen_rtc_status &= ~RTC_IS_OPEN;
- return 0;
-}
-
-
-#ifdef CONFIG_PROC_FS
-
-/*
- * Info exported via "/proc/driver/rtc".
- */
-
-static int gen_rtc_proc_show(struct seq_file *m, void *v)
-{
- struct rtc_time tm;
- unsigned int flags;
- struct rtc_pll_info pll;
-
- flags = get_rtc_time(&tm);
-
- seq_printf(m,
- "rtc_time\t: %02d:%02d:%02d\n"
- "rtc_date\t: %04d-%02d-%02d\n"
- "rtc_epoch\t: %04u\n",
- tm.tm_hour, tm.tm_min, tm.tm_sec,
- tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, 1900);
-
- tm.tm_hour = tm.tm_min = tm.tm_sec = 0;
-
- seq_puts(m, "alarm\t\t: ");
- if (tm.tm_hour <= 24)
- seq_printf(m, "%02d:", tm.tm_hour);
- else
- seq_puts(m, "**:");
-
- if (tm.tm_min <= 59)
- seq_printf(m, "%02d:", tm.tm_min);
- else
- seq_puts(m, "**:");
-
- if (tm.tm_sec <= 59)
- seq_printf(m, "%02d\n", tm.tm_sec);
- else
- seq_puts(m, "**\n");
-
- seq_printf(m,
- "DST_enable\t: %s\n"
- "BCD\t\t: %s\n"
- "24hr\t\t: %s\n"
- "square_wave\t: %s\n"
- "alarm_IRQ\t: %s\n"
- "update_IRQ\t: %s\n"
- "periodic_IRQ\t: %s\n"
- "periodic_freq\t: %ld\n"
- "batt_status\t: %s\n",
- (flags & RTC_DST_EN) ? "yes" : "no",
- (flags & RTC_DM_BINARY) ? "no" : "yes",
- (flags & RTC_24H) ? "yes" : "no",
- (flags & RTC_SQWE) ? "yes" : "no",
- (flags & RTC_AIE) ? "yes" : "no",
- irq_active ? "yes" : "no",
- (flags & RTC_PIE) ? "yes" : "no",
- 0L /* freq */,
- (flags & RTC_BATT_BAD) ? "bad" : "okay");
- if (!get_rtc_pll(&pll))
- seq_printf(m,
- "PLL adjustment\t: %d\n"
- "PLL max +ve adjustment\t: %d\n"
- "PLL max -ve adjustment\t: %d\n"
- "PLL +ve adjustment factor\t: %d\n"
- "PLL -ve adjustment factor\t: %d\n"
- "PLL frequency\t: %ld\n",
- pll.pll_value,
- pll.pll_max,
- pll.pll_min,
- pll.pll_posmult,
- pll.pll_negmult,
- pll.pll_clock);
- return 0;
-}
-
-static int gen_rtc_proc_open(struct inode *inode, struct file *file)
-{
- return single_open(file, gen_rtc_proc_show, NULL);
-}
-
-static const struct file_operations gen_rtc_proc_fops = {
- .open = gen_rtc_proc_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
-
-static int __init gen_rtc_proc_init(void)
-{
- struct proc_dir_entry *r;
-
- r = proc_create("driver/rtc", 0, NULL, &gen_rtc_proc_fops);
- if (!r)
- return -ENOMEM;
- return 0;
-}
-#else
-static inline int gen_rtc_proc_init(void) { return 0; }
-#endif /* CONFIG_PROC_FS */
-
-
-/*
- * The various file operations we support.
- */
-
-static const struct file_operations gen_rtc_fops = {
- .owner = THIS_MODULE,
-#ifdef CONFIG_GEN_RTC_X
- .read = gen_rtc_read,
- .poll = gen_rtc_poll,
-#endif
- .unlocked_ioctl = gen_rtc_unlocked_ioctl,
- .open = gen_rtc_open,
- .release = gen_rtc_release,
- .llseek = noop_llseek,
-};
-
-static struct miscdevice rtc_gen_dev =
-{
- .minor = RTC_MINOR,
- .name = "rtc",
- .fops = &gen_rtc_fops,
-};
-
-static int __init rtc_generic_init(void)
-{
- int retval;
-
- printk(KERN_INFO "Generic RTC Driver v%s\n", RTC_VERSION);
-
- retval = misc_register(&rtc_gen_dev);
- if (retval < 0)
- return retval;
-
- retval = gen_rtc_proc_init();
- if (retval) {
- misc_deregister(&rtc_gen_dev);
- return retval;
- }
-
- return 0;
-}
-
-static void __exit rtc_generic_exit(void)
-{
- remove_proc_entry ("driver/rtc", NULL);
- misc_deregister(&rtc_gen_dev);
-}
-
-
-module_init(rtc_generic_init);
-module_exit(rtc_generic_exit);
-
-MODULE_AUTHOR("Richard Zidlicky");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS_MISCDEV(RTC_MINOR);
diff --git a/drivers/clocksource/arm_arch_timer.c b/drivers/clocksource/arm_arch_timer.c
index 28bce3f4f81d..57700541f951 100644
--- a/drivers/clocksource/arm_arch_timer.c
+++ b/drivers/clocksource/arm_arch_timer.c
@@ -8,6 +8,9 @@
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
+
+#define pr_fmt(fmt) "arm_arch_timer: " fmt
+
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/device.h>
@@ -370,16 +373,33 @@ static bool arch_timer_has_nonsecure_ppi(void)
arch_timer_ppi[PHYS_NONSECURE_PPI]);
}
+static u32 check_ppi_trigger(int irq)
+{
+ u32 flags = irq_get_trigger_type(irq);
+
+ if (flags != IRQF_TRIGGER_HIGH && flags != IRQF_TRIGGER_LOW) {
+ pr_warn("WARNING: Invalid trigger for IRQ%d, assuming level low\n", irq);
+ pr_warn("WARNING: Please fix your firmware\n");
+ flags = IRQF_TRIGGER_LOW;
+ }
+
+ return flags;
+}
+
static int arch_timer_starting_cpu(unsigned int cpu)
{
struct clock_event_device *clk = this_cpu_ptr(arch_timer_evt);
+ u32 flags;
__arch_timer_setup(ARCH_CP15_TIMER, clk);
- enable_percpu_irq(arch_timer_ppi[arch_timer_uses_ppi], 0);
+ flags = check_ppi_trigger(arch_timer_ppi[arch_timer_uses_ppi]);
+ enable_percpu_irq(arch_timer_ppi[arch_timer_uses_ppi], flags);
- if (arch_timer_has_nonsecure_ppi())
- enable_percpu_irq(arch_timer_ppi[PHYS_NONSECURE_PPI], 0);
+ if (arch_timer_has_nonsecure_ppi()) {
+ flags = check_ppi_trigger(arch_timer_ppi[PHYS_NONSECURE_PPI]);
+ enable_percpu_irq(arch_timer_ppi[PHYS_NONSECURE_PPI], flags);
+ }
arch_counter_set_user_access();
if (evtstrm_enable)
diff --git a/drivers/cpufreq/Kconfig b/drivers/cpufreq/Kconfig
index c822d72629d5..74919aa81dcb 100644
--- a/drivers/cpufreq/Kconfig
+++ b/drivers/cpufreq/Kconfig
@@ -32,7 +32,6 @@ config CPU_FREQ_BOOST_SW
config CPU_FREQ_STAT
bool "CPU frequency transition statistics"
- default y
help
Export CPU frequency statistics information through sysfs.
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index 9ec033b4f2d9..be9eade147f2 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -1374,6 +1374,8 @@ MODULE_DEVICE_TABLE(x86cpu, intel_pstate_cpu_ids);
static const struct x86_cpu_id intel_pstate_cpu_oob_ids[] __initconst = {
ICPU(INTEL_FAM6_BROADWELL_XEON_D, core_params),
+ ICPU(INTEL_FAM6_BROADWELL_X, core_params),
+ ICPU(INTEL_FAM6_SKYLAKE_X, core_params),
{}
};
diff --git a/drivers/cpufreq/powernv-cpufreq.c b/drivers/cpufreq/powernv-cpufreq.c
index 87796e0864e9..d3ffde806629 100644
--- a/drivers/cpufreq/powernv-cpufreq.c
+++ b/drivers/cpufreq/powernv-cpufreq.c
@@ -145,11 +145,30 @@ static struct powernv_pstate_info {
/* Use following macros for conversions between pstate_id and index */
static inline int idx_to_pstate(unsigned int i)
{
+ if (unlikely(i >= powernv_pstate_info.nr_pstates)) {
+ pr_warn_once("index %u is out of bound\n", i);
+ return powernv_freqs[powernv_pstate_info.nominal].driver_data;
+ }
+
return powernv_freqs[i].driver_data;
}
static inline unsigned int pstate_to_idx(int pstate)
{
+ int min = powernv_freqs[powernv_pstate_info.min].driver_data;
+ int max = powernv_freqs[powernv_pstate_info.max].driver_data;
+
+ if (min > 0) {
+ if (unlikely((pstate < max) || (pstate > min))) {
+ pr_warn_once("pstate %d is out of bound\n", pstate);
+ return powernv_pstate_info.nominal;
+ }
+ } else {
+ if (unlikely((pstate > max) || (pstate < min))) {
+ pr_warn_once("pstate %d is out of bound\n", pstate);
+ return powernv_pstate_info.nominal;
+ }
+ }
/*
* abs() is deliberately used so that is works with
* both monotonically increasing and decreasing
@@ -593,7 +612,7 @@ void gpstate_timer_handler(unsigned long data)
} else {
gpstate_idx = calc_global_pstate(gpstates->elapsed_time,
gpstates->highest_lpstate_idx,
- freq_data.pstate_id);
+ gpstates->last_lpstate_idx);
}
/*
diff --git a/drivers/crypto/caam/caamalg.c b/drivers/crypto/caam/caamalg.c
index ea8189f4b021..6dc597126b79 100644
--- a/drivers/crypto/caam/caamalg.c
+++ b/drivers/crypto/caam/caamalg.c
@@ -441,6 +441,9 @@ static int aead_set_sh_desc(struct crypto_aead *aead)
OP_ALG_AAI_CTR_MOD128);
const bool is_rfc3686 = alg->caam.rfc3686;
+ if (!ctx->authsize)
+ return 0;
+
/* NULL encryption / decryption */
if (!ctx->enckeylen)
return aead_null_set_sh_desc(aead);
@@ -614,7 +617,7 @@ skip_enc:
keys_fit_inline = true;
/* aead_givencrypt shared descriptor */
- desc = ctx->sh_desc_givenc;
+ desc = ctx->sh_desc_enc;
/* Note: Context registers are saved. */
init_sh_desc_key_aead(desc, ctx, keys_fit_inline, is_rfc3686);
@@ -645,13 +648,13 @@ copy_iv:
append_operation(desc, ctx->class2_alg_type |
OP_ALG_AS_INITFINAL | OP_ALG_ENCRYPT);
- /* ivsize + cryptlen = seqoutlen - authsize */
- append_math_sub_imm_u32(desc, REG3, SEQOUTLEN, IMM, ctx->authsize);
-
/* Read and write assoclen bytes */
append_math_add(desc, VARSEQINLEN, ZERO, REG3, CAAM_CMD_SZ);
append_math_add(desc, VARSEQOUTLEN, ZERO, REG3, CAAM_CMD_SZ);
+ /* ivsize + cryptlen = seqoutlen - authsize */
+ append_math_sub_imm_u32(desc, REG3, SEQOUTLEN, IMM, ctx->authsize);
+
/* Skip assoc data */
append_seq_fifo_store(desc, 0, FIFOST_TYPE_SKIP | FIFOLDST_VLF);
@@ -697,7 +700,7 @@ copy_iv:
ctx->sh_desc_enc_dma = dma_map_single(jrdev, desc,
desc_bytes(desc),
DMA_TO_DEVICE);
- if (dma_mapping_error(jrdev, ctx->sh_desc_givenc_dma)) {
+ if (dma_mapping_error(jrdev, ctx->sh_desc_enc_dma)) {
dev_err(jrdev, "unable to map shared descriptor\n");
return -ENOMEM;
}
diff --git a/drivers/crypto/caam/caamhash.c b/drivers/crypto/caam/caamhash.c
index f1ecc8df8d41..36365b3efdfd 100644
--- a/drivers/crypto/caam/caamhash.c
+++ b/drivers/crypto/caam/caamhash.c
@@ -1898,6 +1898,7 @@ caam_hash_alloc(struct caam_hash_template *template,
template->name);
snprintf(alg->cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s",
template->driver_name);
+ t_alg->ahash_alg.setkey = NULL;
}
alg->cra_module = THIS_MODULE;
alg->cra_init = caam_hash_cra_init;
diff --git a/drivers/edac/sb_edac.c b/drivers/edac/sb_edac.c
index 4fb2eb7c800d..ce0067b7a2f6 100644
--- a/drivers/edac/sb_edac.c
+++ b/drivers/edac/sb_edac.c
@@ -552,9 +552,9 @@ static const struct pci_id_table pci_dev_descr_haswell_table[] = {
/* Knight's Landing Support */
/*
* KNL's memory channels are swizzled between memory controllers.
- * MC0 is mapped to CH3,5,6 and MC1 is mapped to CH0,1,2
+ * MC0 is mapped to CH3,4,5 and MC1 is mapped to CH0,1,2
*/
-#define knl_channel_remap(channel) ((channel + 3) % 6)
+#define knl_channel_remap(mc, chan) ((mc) ? (chan) : (chan) + 3)
/* Memory controller, TAD tables, error injection - 2-8-0, 2-9-0 (2 of these) */
#define PCI_DEVICE_ID_INTEL_KNL_IMC_MC 0x7840
@@ -1286,7 +1286,7 @@ static u32 knl_get_mc_route(int entry, u32 reg)
mc = GET_BITFIELD(reg, entry*3, (entry*3)+2);
chan = GET_BITFIELD(reg, (entry*2) + 18, (entry*2) + 18 + 1);
- return knl_channel_remap(mc*3 + chan);
+ return knl_channel_remap(mc, chan);
}
/*
@@ -2997,8 +2997,15 @@ static void sbridge_mce_output_error(struct mem_ctl_info *mci,
} else {
char A = *("A");
- channel = knl_channel_remap(channel);
+ /*
+ * Reported channel is in range 0-2, so we can't map it
+ * back to mc. To figure out mc we check machine check
+ * bank register that reported this error.
+ * bank15 means mc0 and bank16 means mc1.
+ */
+ channel = knl_channel_remap(m->bank == 16, channel);
channel_mask = 1 << channel;
+
snprintf(msg, sizeof(msg),
"%s%s err_code:%04x:%04x channel:%d (DIMM_%c)",
overflow ? " OVERFLOW" : "",
diff --git a/drivers/firmware/broadcom/bcm47xx_sprom.c b/drivers/firmware/broadcom/bcm47xx_sprom.c
index b6eb875d4af3..62aa3cf09b4d 100644
--- a/drivers/firmware/broadcom/bcm47xx_sprom.c
+++ b/drivers/firmware/broadcom/bcm47xx_sprom.c
@@ -669,7 +669,7 @@ static int bcm47xx_get_sprom_bcma(struct bcma_bus *bus, struct ssb_sprom *out)
case BCMA_HOSTTYPE_PCI:
memset(out, 0, sizeof(struct ssb_sprom));
/* On BCM47XX all PCI buses share the same domain */
- if (config_enabled(CONFIG_BCM47XX))
+ if (IS_ENABLED(CONFIG_BCM47XX))
snprintf(buf, sizeof(buf), "pci/%u/%u/",
bus->host_pci->bus->number + 1,
PCI_SLOT(bus->host_pci->devfn));
diff --git a/drivers/firmware/efi/capsule-loader.c b/drivers/firmware/efi/capsule-loader.c
index c99c24bc79b0..9ae6c116c474 100644
--- a/drivers/firmware/efi/capsule-loader.c
+++ b/drivers/firmware/efi/capsule-loader.c
@@ -16,6 +16,7 @@
#include <linux/slab.h>
#include <linux/mutex.h>
#include <linux/efi.h>
+#include <linux/vmalloc.h>
#define NO_FURTHER_WRITE_ACTION -1
@@ -108,14 +109,15 @@ static ssize_t efi_capsule_submit_update(struct capsule_info *cap_info)
int ret;
void *cap_hdr_temp;
- cap_hdr_temp = kmap(cap_info->pages[0]);
+ cap_hdr_temp = vmap(cap_info->pages, cap_info->index,
+ VM_MAP, PAGE_KERNEL);
if (!cap_hdr_temp) {
- pr_debug("%s: kmap() failed\n", __func__);
+ pr_debug("%s: vmap() failed\n", __func__);
return -EFAULT;
}
ret = efi_capsule_update(cap_hdr_temp, cap_info->pages);
- kunmap(cap_info->pages[0]);
+ vunmap(cap_hdr_temp);
if (ret) {
pr_err("%s: efi_capsule_update() failed\n", __func__);
return ret;
diff --git a/drivers/firmware/efi/capsule.c b/drivers/firmware/efi/capsule.c
index 53b9fd2293ee..6eedff45e6d7 100644
--- a/drivers/firmware/efi/capsule.c
+++ b/drivers/firmware/efi/capsule.c
@@ -190,9 +190,9 @@ efi_capsule_update_locked(efi_capsule_header_t *capsule,
* map the capsule described by @capsule with its data in @pages and
* send it to the firmware via the UpdateCapsule() runtime service.
*
- * @capsule must be a virtual mapping of the first page in @pages
- * (@pages[0]) in the kernel address space. That is, a
- * capsule_header_t that describes the entire contents of the capsule
+ * @capsule must be a virtual mapping of the complete capsule update in the
+ * kernel address space, as the capsule can be consumed immediately.
+ * A capsule_header_t that describes the entire contents of the capsule
* must be at the start of the first data page.
*
* Even though this function will validate that the firmware supports
diff --git a/drivers/fpga/Kconfig b/drivers/fpga/Kconfig
index c9b9fdf6cfbb..d61410299ec0 100644
--- a/drivers/fpga/Kconfig
+++ b/drivers/fpga/Kconfig
@@ -21,6 +21,7 @@ config FPGA_MGR_SOCFPGA
config FPGA_MGR_ZYNQ_FPGA
tristate "Xilinx Zynq FPGA"
+ depends on HAS_DMA
help
FPGA manager driver support for Xilinx Zynq FPGAs.
diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
index e3dba6f44a79..0238bf8bc8c3 100644
--- a/drivers/gpu/drm/Makefile
+++ b/drivers/gpu/drm/Makefile
@@ -24,7 +24,7 @@ drm-$(CONFIG_AGP) += drm_agpsupport.o
drm_kms_helper-y := drm_crtc_helper.o drm_dp_helper.o drm_probe_helper.o \
drm_plane_helper.o drm_dp_mst_topology.o drm_atomic_helper.o \
drm_kms_helper_common.o drm_dp_dual_mode_helper.o \
- drm_simple_kms_helper.o
+ drm_simple_kms_helper.o drm_blend.o
drm_kms_helper-$(CONFIG_DRM_LOAD_EDID_FIRMWARE) += drm_edid_load.o
drm_kms_helper-$(CONFIG_DRM_FBDEV_EMULATION) += drm_fb_helper.o
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
index ff63b88b0ffa..5cc7052e391d 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
@@ -305,7 +305,7 @@ static ssize_t amdgpu_get_pp_table(struct device *dev,
struct drm_device *ddev = dev_get_drvdata(dev);
struct amdgpu_device *adev = ddev->dev_private;
char *table = NULL;
- int size, i;
+ int size;
if (adev->pp_enabled)
size = amdgpu_dpm_get_pp_table(adev, &table);
@@ -315,10 +315,7 @@ static ssize_t amdgpu_get_pp_table(struct device *dev,
if (size >= PAGE_SIZE)
size = PAGE_SIZE - 1;
- for (i = 0; i < size; i++) {
- sprintf(buf + i, "%02x", table[i]);
- }
- sprintf(buf + i, "\n");
+ memcpy(buf, table, size);
return size;
}
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index b7742e62972a..9b61c8ba7aaf 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -335,7 +335,7 @@ static int amdgpu_move_vram_ram(struct ttm_buffer_object *bo,
if (unlikely(r)) {
goto out_cleanup;
}
- r = ttm_bo_move_ttm(bo, true, no_wait_gpu, new_mem);
+ r = ttm_bo_move_ttm(bo, true, interruptible, no_wait_gpu, new_mem);
out_cleanup:
ttm_bo_mem_put(bo, &tmp_mem);
return r;
@@ -368,7 +368,7 @@ static int amdgpu_move_ram_vram(struct ttm_buffer_object *bo,
if (unlikely(r)) {
return r;
}
- r = ttm_bo_move_ttm(bo, true, no_wait_gpu, &tmp_mem);
+ r = ttm_bo_move_ttm(bo, true, interruptible, no_wait_gpu, &tmp_mem);
if (unlikely(r)) {
goto out_cleanup;
}
diff --git a/drivers/gpu/drm/amd/amdgpu/ci_dpm.c b/drivers/gpu/drm/amd/amdgpu/ci_dpm.c
index e2f0e5d58d5c..a5c94b482459 100644
--- a/drivers/gpu/drm/amd/amdgpu/ci_dpm.c
+++ b/drivers/gpu/drm/amd/amdgpu/ci_dpm.c
@@ -5779,6 +5779,7 @@ static int ci_dpm_init_microcode(struct amdgpu_device *adev)
break;
case CHIP_KAVERI:
case CHIP_KABINI:
+ case CHIP_MULLINS:
default: BUG();
}
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
index bff8668e9e6d..b8184617ca25 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
@@ -270,7 +270,8 @@ static const u32 tonga_mgcg_cgcg_init[] =
static const u32 golden_settings_polaris11_a11[] =
{
- mmCB_HW_CONTROL, 0xfffdf3cf, 0x00006208,
+ mmCB_HW_CONTROL, 0x0000f3cf, 0x00007208,
+ mmCB_HW_CONTROL_2, 0x0f000000, 0x0f000000,
mmCB_HW_CONTROL_3, 0x000001ff, 0x00000040,
mmDB_DEBUG2, 0xf00fffff, 0x00000400,
mmPA_SC_ENHANCE, 0xffffffff, 0x20000001,
@@ -279,7 +280,7 @@ static const u32 golden_settings_polaris11_a11[] =
mmPA_SC_RASTER_CONFIG_1, 0x0000003f, 0x00000000,
mmRLC_CGCG_CGLS_CTRL, 0x00000003, 0x0001003c,
mmRLC_CGCG_CGLS_CTRL_3D, 0xffffffff, 0x0001003c,
- mmSQ_CONFIG, 0x07f80000, 0x07180000,
+ mmSQ_CONFIG, 0x07f80000, 0x01180000,
mmTA_CNTL_AUX, 0x000f000f, 0x000b0000,
mmTCC_CTRL, 0x00100000, 0xf31fff7f,
mmTCP_ADDR_CONFIG, 0x000003ff, 0x000000f3,
@@ -301,8 +302,8 @@ static const u32 polaris11_golden_common_all[] =
static const u32 golden_settings_polaris10_a11[] =
{
mmATC_MISC_CG, 0x000c0fc0, 0x000c0200,
- mmCB_HW_CONTROL, 0xfffdf3cf, 0x00007208,
- mmCB_HW_CONTROL_2, 0, 0x0f000000,
+ mmCB_HW_CONTROL, 0x0001f3cf, 0x00007208,
+ mmCB_HW_CONTROL_2, 0x0f000000, 0x0f000000,
mmCB_HW_CONTROL_3, 0x000001ff, 0x00000040,
mmDB_DEBUG2, 0xf00fffff, 0x00000400,
mmPA_SC_ENHANCE, 0xffffffff, 0x20000001,
@@ -409,6 +410,7 @@ static const u32 golden_settings_iceland_a11[] =
mmPA_SC_LINE_STIPPLE_STATE, 0x0000ff0f, 0x00000000,
mmPA_SC_RASTER_CONFIG, 0x3f3fffff, 0x00000002,
mmPA_SC_RASTER_CONFIG_1, 0x0000003f, 0x00000000,
+ mmRLC_CGCG_CGLS_CTRL, 0x00000003, 0x0000003c,
mmSQ_RANDOM_WAVE_PRI, 0x001fffff, 0x000006fd,
mmTA_CNTL_AUX, 0x000f000f, 0x000b0000,
mmTCC_CTRL, 0x00100000, 0xf31fff7f,
@@ -505,8 +507,10 @@ static const u32 cz_golden_settings_a11[] =
mmGB_GPU_ID, 0x0000000f, 0x00000000,
mmPA_SC_ENHANCE, 0xffffffff, 0x00000001,
mmPA_SC_LINE_STIPPLE_STATE, 0x0000ff0f, 0x00000000,
+ mmRLC_CGCG_CGLS_CTRL, 0x00000003, 0x0000003c,
mmSQ_RANDOM_WAVE_PRI, 0x001fffff, 0x000006fd,
mmTA_CNTL_AUX, 0x000f000f, 0x00010000,
+ mmTCC_CTRL, 0x00100000, 0xf31fff7f,
mmTCC_EXE_DISABLE, 0x00000002, 0x00000002,
mmTCP_ADDR_CONFIG, 0x0000000f, 0x000000f3,
mmTCP_CHAN_STEER_LO, 0xffffffff, 0x00001302
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c
index d24a82bd0c7a..0b0f08641eed 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c
@@ -144,6 +144,7 @@ static int gmc_v7_0_init_microcode(struct amdgpu_device *adev)
break;
case CHIP_KAVERI:
case CHIP_KABINI:
+ case CHIP_MULLINS:
return 0;
default: BUG();
}
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
index 717359d3ba8c..2aee2c6f3cd5 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
@@ -103,6 +103,11 @@ static const u32 stoney_mgcg_cgcg_init[] =
mmMC_MEM_POWER_LS, 0xffffffff, 0x00000104
};
+static const u32 golden_settings_stoney_common[] =
+{
+ mmMC_HUB_RDREQ_UVD, MC_HUB_RDREQ_UVD__PRESCALE_MASK, 0x00000004,
+ mmMC_RD_GRP_OTH, MC_RD_GRP_OTH__UVD_MASK, 0x00600000
+};
static void gmc_v8_0_init_golden_registers(struct amdgpu_device *adev)
{
@@ -142,6 +147,9 @@ static void gmc_v8_0_init_golden_registers(struct amdgpu_device *adev)
amdgpu_program_register_sequence(adev,
stoney_mgcg_cgcg_init,
(const u32)ARRAY_SIZE(stoney_mgcg_cgcg_init));
+ amdgpu_program_register_sequence(adev,
+ golden_settings_stoney_common,
+ (const u32)ARRAY_SIZE(golden_settings_stoney_common));
break;
default:
break;
diff --git a/drivers/gpu/drm/cirrus/cirrus_main.c b/drivers/gpu/drm/cirrus/cirrus_main.c
index 80446e2d3ab6..76bcb43e7c06 100644
--- a/drivers/gpu/drm/cirrus/cirrus_main.c
+++ b/drivers/gpu/drm/cirrus/cirrus_main.c
@@ -185,14 +185,23 @@ int cirrus_driver_load(struct drm_device *dev, unsigned long flags)
goto out;
}
+ /*
+ * cirrus_modeset_init() is initializing/registering the emulated fbdev
+ * and DRM internals can access/test some of the fields in
+ * mode_config->funcs as part of the fbdev registration process.
+ * Make sure dev->mode_config.funcs is properly set to avoid
+ * dereferencing a NULL pointer.
+ * FIXME: mode_config.funcs assignment should probably be done in
+ * cirrus_modeset_init() (that's a common pattern seen in other DRM
+ * drivers).
+ */
+ dev->mode_config.funcs = &cirrus_mode_funcs;
r = cirrus_modeset_init(cdev);
if (r) {
dev_err(&dev->pdev->dev, "Fatal error during modeset init: %d\n", r);
goto out;
}
- dev->mode_config.funcs = (void *)&cirrus_mode_funcs;
-
return 0;
out:
cirrus_driver_unload(dev);
diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
index 8d2f111fa113..fa3930757972 100644
--- a/drivers/gpu/drm/drm_atomic.c
+++ b/drivers/gpu/drm/drm_atomic.c
@@ -711,6 +711,8 @@ int drm_atomic_plane_set_property(struct drm_plane *plane,
state->src_h = val;
} else if (property == config->rotation_property) {
state->rotation = val;
+ } else if (property == plane->zpos_property) {
+ state->zpos = val;
} else if (plane->funcs->atomic_set_property) {
return plane->funcs->atomic_set_property(plane, state,
property, val);
@@ -767,6 +769,8 @@ drm_atomic_plane_get_property(struct drm_plane *plane,
*val = state->src_h;
} else if (property == config->rotation_property) {
*val = state->rotation;
+ } else if (property == plane->zpos_property) {
+ *val = state->zpos;
} else if (plane->funcs->atomic_get_property) {
return plane->funcs->atomic_get_property(plane, state, property, val);
} else {
diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
index de7fddce3cef..20be86d89a20 100644
--- a/drivers/gpu/drm/drm_atomic_helper.c
+++ b/drivers/gpu/drm/drm_atomic_helper.c
@@ -32,6 +32,8 @@
#include <drm/drm_atomic_helper.h>
#include <linux/fence.h>
+#include "drm_crtc_internal.h"
+
/**
* DOC: overview
*
@@ -592,6 +594,10 @@ drm_atomic_helper_check_planes(struct drm_device *dev,
struct drm_plane_state *plane_state;
int i, ret = 0;
+ ret = drm_atomic_helper_normalize_zpos(dev, state);
+ if (ret)
+ return ret;
+
for_each_plane_in_state(state, plane, plane_state, i) {
const struct drm_plane_helper_funcs *funcs;
@@ -2955,6 +2961,7 @@ void __drm_atomic_helper_crtc_duplicate_state(struct drm_crtc *crtc,
state->planes_changed = false;
state->connectors_changed = false;
state->color_mgmt_changed = false;
+ state->zpos_changed = false;
state->event = NULL;
}
EXPORT_SYMBOL(__drm_atomic_helper_crtc_duplicate_state);
diff --git a/drivers/gpu/drm/drm_blend.c b/drivers/gpu/drm/drm_blend.c
new file mode 100644
index 000000000000..f3c0942bd756
--- /dev/null
+++ b/drivers/gpu/drm/drm_blend.c
@@ -0,0 +1,238 @@
+/*
+ * Copyright (C) 2016 Samsung Electronics Co.Ltd
+ * Authors:
+ * Marek Szyprowski <m.szyprowski@samsung.com>
+ *
+ * DRM core plane blending related functions
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting documentation, and
+ * that the name of the copyright holders not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission. The copyright holders make no representations
+ * about the suitability of this software for any purpose. It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+#include <drm/drmP.h>
+#include <drm/drm_atomic.h>
+#include <drm/drm_crtc.h>
+#include <linux/export.h>
+#include <linux/slab.h>
+#include <linux/sort.h>
+
+#include "drm_internal.h"
+
+/**
+ * drm_plane_create_zpos_property - create mutable zpos property
+ * @plane: drm plane
+ * @zpos: initial value of zpos property
+ * @min: minimal possible value of zpos property
+ * @max: maximal possible value of zpos property
+ *
+ * This function initializes generic mutable zpos property and enables support
+ * for it in drm core. Drivers can then attach this property to planes to enable
+ * support for configurable planes arrangement during blending operation.
+ * Once mutable zpos property has been enabled, the DRM core will automatically
+ * calculate drm_plane_state->normalized_zpos values. Usually min should be set
+ * to 0 and max to maximal number of planes for given crtc - 1.
+ *
+ * If zpos of some planes cannot be changed (like fixed background or
+ * cursor/topmost planes), driver should adjust min/max values and assign those
+ * planes immutable zpos property with lower or higher values (for more
+ * information, see drm_mode_create_zpos_immutable_property() function). In such
+ * case driver should also assign proper initial zpos values for all planes in
+ * its plane_reset() callback, so the planes will be always sorted properly.
+ *
+ * Returns:
+ * Zero on success, negative errno on failure.
+ */
+int drm_plane_create_zpos_property(struct drm_plane *plane,
+ unsigned int zpos,
+ unsigned int min, unsigned int max)
+{
+ struct drm_property *prop;
+
+ prop = drm_property_create_range(plane->dev, 0, "zpos", min, max);
+ if (!prop)
+ return -ENOMEM;
+
+ drm_object_attach_property(&plane->base, prop, zpos);
+
+ plane->zpos_property = prop;
+
+ if (plane->state) {
+ plane->state->zpos = zpos;
+ plane->state->normalized_zpos = zpos;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL(drm_plane_create_zpos_property);
+
+/**
+ * drm_plane_create_zpos_immutable_property - create immuttable zpos property
+ * @plane: drm plane
+ * @zpos: value of zpos property
+ *
+ * This function initializes generic immutable zpos property and enables
+ * support for it in drm core. Using this property driver lets userspace
+ * to get the arrangement of the planes for blending operation and notifies
+ * it that the hardware (or driver) doesn't support changing of the planes'
+ * order.
+ *
+ * Returns:
+ * Zero on success, negative errno on failure.
+ */
+int drm_plane_create_zpos_immutable_property(struct drm_plane *plane,
+ unsigned int zpos)
+{
+ struct drm_property *prop;
+
+ prop = drm_property_create_range(plane->dev, DRM_MODE_PROP_IMMUTABLE,
+ "zpos", zpos, zpos);
+ if (!prop)
+ return -ENOMEM;
+
+ drm_object_attach_property(&plane->base, prop, zpos);
+
+ plane->zpos_property = prop;
+
+ if (plane->state) {
+ plane->state->zpos = zpos;
+ plane->state->normalized_zpos = zpos;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL(drm_plane_create_zpos_immutable_property);
+
+static int drm_atomic_state_zpos_cmp(const void *a, const void *b)
+{
+ const struct drm_plane_state *sa = *(struct drm_plane_state **)a;
+ const struct drm_plane_state *sb = *(struct drm_plane_state **)b;
+
+ if (sa->zpos != sb->zpos)
+ return sa->zpos - sb->zpos;
+ else
+ return sa->plane->base.id - sb->plane->base.id;
+}
+
+/**
+ * drm_atomic_helper_crtc_normalize_zpos - calculate normalized zpos values
+ * @crtc: crtc with planes, which have to be considered for normalization
+ * @crtc_state: new atomic state to apply
+ *
+ * This function checks new states of all planes assigned to given crtc and
+ * calculates normalized zpos value for them. Planes are compared first by their
+ * zpos values, then by plane id (if zpos equals). Plane with lowest zpos value
+ * is at the bottom. The plane_state->normalized_zpos is then filled with unique
+ * values from 0 to number of active planes in crtc minus one.
+ *
+ * RETURNS
+ * Zero for success or -errno
+ */
+static int drm_atomic_helper_crtc_normalize_zpos(struct drm_crtc *crtc,
+ struct drm_crtc_state *crtc_state)
+{
+ struct drm_atomic_state *state = crtc_state->state;
+ struct drm_device *dev = crtc->dev;
+ int total_planes = dev->mode_config.num_total_plane;
+ struct drm_plane_state **states;
+ struct drm_plane *plane;
+ int i, n = 0;
+ int ret = 0;
+
+ DRM_DEBUG_ATOMIC("[CRTC:%d:%s] calculating normalized zpos values\n",
+ crtc->base.id, crtc->name);
+
+ states = kmalloc_array(total_planes, sizeof(*states), GFP_TEMPORARY);
+ if (!states)
+ return -ENOMEM;
+
+ /*
+ * Normalization process might create new states for planes which
+ * normalized_zpos has to be recalculated.
+ */
+ drm_for_each_plane_mask(plane, dev, crtc_state->plane_mask) {
+ struct drm_plane_state *plane_state =
+ drm_atomic_get_plane_state(state, plane);
+ if (IS_ERR(plane_state)) {
+ ret = PTR_ERR(plane_state);
+ goto done;
+ }
+ states[n++] = plane_state;
+ DRM_DEBUG_ATOMIC("[PLANE:%d:%s] processing zpos value %d\n",
+ plane->base.id, plane->name,
+ plane_state->zpos);
+ }
+
+ sort(states, n, sizeof(*states), drm_atomic_state_zpos_cmp, NULL);
+
+ for (i = 0; i < n; i++) {
+ plane = states[i]->plane;
+
+ states[i]->normalized_zpos = i;
+ DRM_DEBUG_ATOMIC("[PLANE:%d:%s] normalized zpos value %d\n",
+ plane->base.id, plane->name, i);
+ }
+ crtc_state->zpos_changed = true;
+
+done:
+ kfree(states);
+ return ret;
+}
+
+/**
+ * drm_atomic_helper_normalize_zpos - calculate normalized zpos values for all
+ * crtcs
+ * @dev: DRM device
+ * @state: atomic state of DRM device
+ *
+ * This function calculates normalized zpos value for all modified planes in
+ * the provided atomic state of DRM device. For more information, see
+ * drm_atomic_helper_crtc_normalize_zpos() function.
+ *
+ * RETURNS
+ * Zero for success or -errno
+ */
+int drm_atomic_helper_normalize_zpos(struct drm_device *dev,
+ struct drm_atomic_state *state)
+{
+ struct drm_crtc *crtc;
+ struct drm_crtc_state *crtc_state;
+ struct drm_plane *plane;
+ struct drm_plane_state *plane_state;
+ int i, ret = 0;
+
+ for_each_plane_in_state(state, plane, plane_state, i) {
+ crtc = plane_state->crtc;
+ if (!crtc)
+ continue;
+ if (plane->state->zpos != plane_state->zpos) {
+ crtc_state =
+ drm_atomic_get_existing_crtc_state(state, crtc);
+ crtc_state->zpos_changed = true;
+ }
+ }
+
+ for_each_crtc_in_state(state, crtc, crtc_state, i) {
+ if (crtc_state->plane_mask != crtc->state->plane_mask ||
+ crtc_state->zpos_changed) {
+ ret = drm_atomic_helper_crtc_normalize_zpos(crtc,
+ crtc_state);
+ if (ret)
+ return ret;
+ }
+ }
+ return 0;
+}
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index f1d9f0569d7f..b1dbb60af99f 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -1121,16 +1121,14 @@ static int drm_connector_register_all(struct drm_device *dev)
struct drm_connector *connector;
int ret;
- mutex_lock(&dev->mode_config.mutex);
-
- drm_for_each_connector(connector, dev) {
+ /* FIXME: taking the mode config mutex ends up in a clash with
+ * fbcon/backlight registration */
+ list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
ret = drm_connector_register(connector);
if (ret)
goto err;
}
- mutex_unlock(&dev->mode_config.mutex);
-
return 0;
err:
diff --git a/drivers/gpu/drm/drm_crtc_internal.h b/drivers/gpu/drm/drm_crtc_internal.h
index 47a500b90fd7..0c34e6d906d1 100644
--- a/drivers/gpu/drm/drm_crtc_internal.h
+++ b/drivers/gpu/drm/drm_crtc_internal.h
@@ -128,3 +128,7 @@ int drm_mode_atomic_ioctl(struct drm_device *dev,
int drm_modeset_register_all(struct drm_device *dev);
void drm_modeset_unregister_all(struct drm_device *dev);
+
+/* drm_blend.c */
+int drm_atomic_helper_normalize_zpos(struct drm_device *dev,
+ struct drm_atomic_state *state);
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 7df26d4b7ad8..637a0aa4d3a0 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -74,6 +74,8 @@
#define EDID_QUIRK_FORCE_8BPC (1 << 8)
/* Force 12bpc */
#define EDID_QUIRK_FORCE_12BPC (1 << 9)
+/* Force 6bpc */
+#define EDID_QUIRK_FORCE_6BPC (1 << 10)
struct detailed_mode_closure {
struct drm_connector *connector;
@@ -100,6 +102,9 @@ static struct edid_quirk {
/* Unknown Acer */
{ "ACR", 2423, EDID_QUIRK_FIRST_DETAILED_PREFERRED },
+ /* AEO model 0 reports 8 bpc, but is a 6 bpc panel */
+ { "AEO", 0, EDID_QUIRK_FORCE_6BPC },
+
/* Belinea 10 15 55 */
{ "MAX", 1516, EDID_QUIRK_PREFER_LARGE_60 },
{ "MAX", 0x77e, EDID_QUIRK_PREFER_LARGE_60 },
@@ -3862,6 +3867,20 @@ static void drm_add_display_info(struct edid *edid,
/* HDMI deep color modes supported? Assign to info, if so */
drm_assign_hdmi_deep_color_info(edid, info, connector);
+ /*
+ * Digital sink with "DFP 1.x compliant TMDS" according to EDID 1.3?
+ *
+ * For such displays, the DFP spec 1.0, section 3.10 "EDID support"
+ * tells us to assume 8 bpc color depth if the EDID doesn't have
+ * extensions which tell otherwise.
+ */
+ if ((info->bpc == 0) && (edid->revision < 4) &&
+ (edid->input & DRM_EDID_DIGITAL_TYPE_DVI)) {
+ info->bpc = 8;
+ DRM_DEBUG("%s: Assigning DFP sink color depth as %d bpc.\n",
+ connector->name, info->bpc);
+ }
+
/* Only defined for 1.4 with digital displays */
if (edid->revision < 4)
return;
@@ -4082,6 +4101,9 @@ int drm_add_edid_modes(struct drm_connector *connector, struct edid *edid)
drm_add_display_info(edid, &connector->display_info, connector);
+ if (quirks & EDID_QUIRK_FORCE_6BPC)
+ connector->display_info.bpc = 6;
+
if (quirks & EDID_QUIRK_FORCE_8BPC)
connector->display_info.bpc = 8;
diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.h b/drivers/gpu/drm/exynos/exynos_drm_drv.h
index b39d521f093d..7f1a49d5bdbe 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_drv.h
+++ b/drivers/gpu/drm/exynos/exynos_drm_drv.h
@@ -64,7 +64,6 @@ struct exynos_drm_plane_state {
struct exynos_drm_rect src;
unsigned int h_ratio;
unsigned int v_ratio;
- unsigned int zpos;
};
static inline struct exynos_drm_plane_state *
@@ -221,7 +220,6 @@ struct exynos_drm_private {
* this array is used to be aware of which crtc did it request vblank.
*/
struct drm_crtc *crtc[MAX_CRTC];
- struct drm_property *plane_zpos_property;
struct device *dma_dev;
void *mapping;
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
index fb49443bfd32..4cfb39d543b4 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
@@ -52,7 +52,7 @@ static int exynos_drm_fb_mmap(struct fb_info *info,
ret = dma_mmap_attrs(to_dma_dev(helper->dev), vma, exynos_gem->cookie,
exynos_gem->dma_addr, exynos_gem->size,
- &exynos_gem->dma_attrs);
+ exynos_gem->dma_attrs);
if (ret < 0) {
DRM_ERROR("failed to mmap.\n");
return ret;
diff --git a/drivers/gpu/drm/exynos/exynos_drm_g2d.c b/drivers/gpu/drm/exynos/exynos_drm_g2d.c
index 8564c3da0d22..4bf00f57ffe8 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_g2d.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_g2d.c
@@ -17,7 +17,6 @@
#include <linux/slab.h>
#include <linux/workqueue.h>
#include <linux/dma-mapping.h>
-#include <linux/dma-attrs.h>
#include <linux/of.h>
#include <drm/drmP.h>
@@ -235,7 +234,7 @@ struct g2d_data {
struct mutex cmdlist_mutex;
dma_addr_t cmdlist_pool;
void *cmdlist_pool_virt;
- struct dma_attrs cmdlist_dma_attrs;
+ unsigned long cmdlist_dma_attrs;
/* runqueue*/
struct g2d_runqueue_node *runqueue_node;
@@ -256,13 +255,12 @@ static int g2d_init_cmdlist(struct g2d_data *g2d)
int ret;
struct g2d_buf_info *buf_info;
- init_dma_attrs(&g2d->cmdlist_dma_attrs);
- dma_set_attr(DMA_ATTR_WRITE_COMBINE, &g2d->cmdlist_dma_attrs);
+ g2d->cmdlist_dma_attrs = DMA_ATTR_WRITE_COMBINE;
g2d->cmdlist_pool_virt = dma_alloc_attrs(to_dma_dev(subdrv->drm_dev),
G2D_CMDLIST_POOL_SIZE,
&g2d->cmdlist_pool, GFP_KERNEL,
- &g2d->cmdlist_dma_attrs);
+ g2d->cmdlist_dma_attrs);
if (!g2d->cmdlist_pool_virt) {
dev_err(dev, "failed to allocate dma memory\n");
return -ENOMEM;
@@ -295,7 +293,7 @@ static int g2d_init_cmdlist(struct g2d_data *g2d)
err:
dma_free_attrs(to_dma_dev(subdrv->drm_dev), G2D_CMDLIST_POOL_SIZE,
g2d->cmdlist_pool_virt,
- g2d->cmdlist_pool, &g2d->cmdlist_dma_attrs);
+ g2d->cmdlist_pool, g2d->cmdlist_dma_attrs);
return ret;
}
@@ -309,7 +307,7 @@ static void g2d_fini_cmdlist(struct g2d_data *g2d)
dma_free_attrs(to_dma_dev(subdrv->drm_dev),
G2D_CMDLIST_POOL_SIZE,
g2d->cmdlist_pool_virt,
- g2d->cmdlist_pool, &g2d->cmdlist_dma_attrs);
+ g2d->cmdlist_pool, g2d->cmdlist_dma_attrs);
}
}
diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.c b/drivers/gpu/drm/exynos/exynos_drm_gem.c
index cdf9f1af4347..f2ae72ba7d5a 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_gem.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_gem.c
@@ -24,7 +24,7 @@
static int exynos_drm_alloc_buf(struct exynos_drm_gem *exynos_gem)
{
struct drm_device *dev = exynos_gem->base.dev;
- enum dma_attr attr;
+ unsigned long attr;
unsigned int nr_pages;
struct sg_table sgt;
int ret = -ENOMEM;
@@ -34,7 +34,7 @@ static int exynos_drm_alloc_buf(struct exynos_drm_gem *exynos_gem)
return 0;
}
- init_dma_attrs(&exynos_gem->dma_attrs);
+ exynos_gem->dma_attrs = 0;
/*
* if EXYNOS_BO_CONTIG, fully physically contiguous memory
@@ -42,7 +42,7 @@ static int exynos_drm_alloc_buf(struct exynos_drm_gem *exynos_gem)
* as possible.
*/
if (!(exynos_gem->flags & EXYNOS_BO_NONCONTIG))
- dma_set_attr(DMA_ATTR_FORCE_CONTIGUOUS, &exynos_gem->dma_attrs);
+ exynos_gem->dma_attrs |= DMA_ATTR_FORCE_CONTIGUOUS;
/*
* if EXYNOS_BO_WC or EXYNOS_BO_NONCACHABLE, writecombine mapping
@@ -54,8 +54,8 @@ static int exynos_drm_alloc_buf(struct exynos_drm_gem *exynos_gem)
else
attr = DMA_ATTR_NON_CONSISTENT;
- dma_set_attr(attr, &exynos_gem->dma_attrs);
- dma_set_attr(DMA_ATTR_NO_KERNEL_MAPPING, &exynos_gem->dma_attrs);
+ exynos_gem->dma_attrs |= attr;
+ exynos_gem->dma_attrs |= DMA_ATTR_NO_KERNEL_MAPPING;
nr_pages = exynos_gem->size >> PAGE_SHIFT;
@@ -67,7 +67,7 @@ static int exynos_drm_alloc_buf(struct exynos_drm_gem *exynos_gem)
exynos_gem->cookie = dma_alloc_attrs(to_dma_dev(dev), exynos_gem->size,
&exynos_gem->dma_addr, GFP_KERNEL,
- &exynos_gem->dma_attrs);
+ exynos_gem->dma_attrs);
if (!exynos_gem->cookie) {
DRM_ERROR("failed to allocate buffer.\n");
goto err_free;
@@ -75,7 +75,7 @@ static int exynos_drm_alloc_buf(struct exynos_drm_gem *exynos_gem)
ret = dma_get_sgtable_attrs(to_dma_dev(dev), &sgt, exynos_gem->cookie,
exynos_gem->dma_addr, exynos_gem->size,
- &exynos_gem->dma_attrs);
+ exynos_gem->dma_attrs);
if (ret < 0) {
DRM_ERROR("failed to get sgtable.\n");
goto err_dma_free;
@@ -99,7 +99,7 @@ err_sgt_free:
sg_free_table(&sgt);
err_dma_free:
dma_free_attrs(to_dma_dev(dev), exynos_gem->size, exynos_gem->cookie,
- exynos_gem->dma_addr, &exynos_gem->dma_attrs);
+ exynos_gem->dma_addr, exynos_gem->dma_attrs);
err_free:
drm_free_large(exynos_gem->pages);
@@ -120,7 +120,7 @@ static void exynos_drm_free_buf(struct exynos_drm_gem *exynos_gem)
dma_free_attrs(to_dma_dev(dev), exynos_gem->size, exynos_gem->cookie,
(dma_addr_t)exynos_gem->dma_addr,
- &exynos_gem->dma_attrs);
+ exynos_gem->dma_attrs);
drm_free_large(exynos_gem->pages);
}
@@ -346,7 +346,7 @@ static int exynos_drm_gem_mmap_buffer(struct exynos_drm_gem *exynos_gem,
ret = dma_mmap_attrs(to_dma_dev(drm_dev), vma, exynos_gem->cookie,
exynos_gem->dma_addr, exynos_gem->size,
- &exynos_gem->dma_attrs);
+ exynos_gem->dma_attrs);
if (ret < 0) {
DRM_ERROR("failed to mmap.\n");
return ret;
diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.h b/drivers/gpu/drm/exynos/exynos_drm_gem.h
index 78100742281d..df7c543d6558 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_gem.h
+++ b/drivers/gpu/drm/exynos/exynos_drm_gem.h
@@ -50,7 +50,7 @@ struct exynos_drm_gem {
void *cookie;
void __iomem *kvaddr;
dma_addr_t dma_addr;
- struct dma_attrs dma_attrs;
+ unsigned long dma_attrs;
struct page **pages;
struct sg_table *sgt;
};
diff --git a/drivers/gpu/drm/exynos/exynos_drm_plane.c b/drivers/gpu/drm/exynos/exynos_drm_plane.c
index 77f12c00abf9..7f32419b25ea 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_plane.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_plane.c
@@ -139,9 +139,9 @@ static void exynos_drm_plane_reset(struct drm_plane *plane)
exynos_state = kzalloc(sizeof(*exynos_state), GFP_KERNEL);
if (exynos_state) {
- exynos_state->zpos = exynos_plane->config->zpos;
plane->state = &exynos_state->base;
plane->state->plane = plane;
+ plane->state->zpos = exynos_plane->config->zpos;
}
}
@@ -157,7 +157,6 @@ exynos_drm_plane_duplicate_state(struct drm_plane *plane)
return NULL;
__drm_atomic_helper_plane_duplicate_state(plane, &copy->base);
- copy->zpos = exynos_state->zpos;
return &copy->base;
}
@@ -170,43 +169,6 @@ static void exynos_drm_plane_destroy_state(struct drm_plane *plane,
kfree(old_exynos_state);
}
-static int exynos_drm_plane_atomic_set_property(struct drm_plane *plane,
- struct drm_plane_state *state,
- struct drm_property *property,
- uint64_t val)
-{
- struct exynos_drm_plane *exynos_plane = to_exynos_plane(plane);
- struct exynos_drm_plane_state *exynos_state =
- to_exynos_plane_state(state);
- struct exynos_drm_private *dev_priv = plane->dev->dev_private;
- const struct exynos_drm_plane_config *config = exynos_plane->config;
-
- if (property == dev_priv->plane_zpos_property &&
- (config->capabilities & EXYNOS_DRM_PLANE_CAP_ZPOS))
- exynos_state->zpos = val;
- else
- return -EINVAL;
-
- return 0;
-}
-
-static int exynos_drm_plane_atomic_get_property(struct drm_plane *plane,
- const struct drm_plane_state *state,
- struct drm_property *property,
- uint64_t *val)
-{
- const struct exynos_drm_plane_state *exynos_state =
- container_of(state, const struct exynos_drm_plane_state, base);
- struct exynos_drm_private *dev_priv = plane->dev->dev_private;
-
- if (property == dev_priv->plane_zpos_property)
- *val = exynos_state->zpos;
- else
- return -EINVAL;
-
- return 0;
-}
-
static struct drm_plane_funcs exynos_plane_funcs = {
.update_plane = drm_atomic_helper_update_plane,
.disable_plane = drm_atomic_helper_disable_plane,
@@ -215,8 +177,6 @@ static struct drm_plane_funcs exynos_plane_funcs = {
.reset = exynos_drm_plane_reset,
.atomic_duplicate_state = exynos_drm_plane_duplicate_state,
.atomic_destroy_state = exynos_drm_plane_destroy_state,
- .atomic_set_property = exynos_drm_plane_atomic_set_property,
- .atomic_get_property = exynos_drm_plane_atomic_get_property,
};
static int
@@ -304,23 +264,13 @@ static const struct drm_plane_helper_funcs plane_helper_funcs = {
};
static void exynos_plane_attach_zpos_property(struct drm_plane *plane,
- unsigned int zpos)
+ bool immutable)
{
- struct drm_device *dev = plane->dev;
- struct exynos_drm_private *dev_priv = dev->dev_private;
- struct drm_property *prop;
-
- prop = dev_priv->plane_zpos_property;
- if (!prop) {
- prop = drm_property_create_range(dev, 0, "zpos",
- 0, MAX_PLANE - 1);
- if (!prop)
- return;
-
- dev_priv->plane_zpos_property = prop;
- }
-
- drm_object_attach_property(&plane->base, prop, zpos);
+ /* FIXME */
+ if (immutable)
+ drm_plane_create_zpos_immutable_property(plane, 0);
+ else
+ drm_plane_create_zpos_property(plane, 0, 0, MAX_PLANE - 1);
}
int exynos_plane_init(struct drm_device *dev,
@@ -346,7 +296,8 @@ int exynos_plane_init(struct drm_device *dev,
exynos_plane->index = index;
exynos_plane->config = config;
- exynos_plane_attach_zpos_property(&exynos_plane->base, config->zpos);
+ exynos_plane_attach_zpos_property(&exynos_plane->base,
+ !(config->capabilities & EXYNOS_DRM_PLANE_CAP_ZPOS));
return 0;
}
diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c
index 74a4269cc1b0..e1d47f9435fc 100644
--- a/drivers/gpu/drm/exynos/exynos_mixer.c
+++ b/drivers/gpu/drm/exynos/exynos_mixer.c
@@ -477,6 +477,7 @@ static void vp_video_buffer(struct mixer_context *ctx,
struct drm_display_mode *mode = &state->base.crtc->state->adjusted_mode;
struct mixer_resources *res = &ctx->mixer_res;
struct drm_framebuffer *fb = state->base.fb;
+ unsigned int priority = state->base.normalized_zpos + 1;
unsigned long flags;
dma_addr_t luma_addr[2], chroma_addr[2];
bool tiled_mode = false;
@@ -561,7 +562,7 @@ static void vp_video_buffer(struct mixer_context *ctx,
mixer_cfg_scan(ctx, mode->vdisplay);
mixer_cfg_rgb_fmt(ctx, mode->vdisplay);
- mixer_cfg_layer(ctx, plane->index, state->zpos + 1, true);
+ mixer_cfg_layer(ctx, plane->index, priority, true);
mixer_cfg_vp_blend(ctx);
mixer_run(ctx);
@@ -586,6 +587,7 @@ static void mixer_graph_buffer(struct mixer_context *ctx,
struct drm_display_mode *mode = &state->base.crtc->state->adjusted_mode;
struct mixer_resources *res = &ctx->mixer_res;
struct drm_framebuffer *fb = state->base.fb;
+ unsigned int priority = state->base.normalized_zpos + 1;
unsigned long flags;
unsigned int win = plane->index;
unsigned int x_ratio = 0, y_ratio = 0;
@@ -677,7 +679,7 @@ static void mixer_graph_buffer(struct mixer_context *ctx,
mixer_cfg_scan(ctx, mode->vdisplay);
mixer_cfg_rgb_fmt(ctx, mode->vdisplay);
- mixer_cfg_layer(ctx, win, state->zpos + 1, true);
+ mixer_cfg_layer(ctx, win, priority, true);
mixer_cfg_gfx_blend(ctx, win, is_alpha_format(fb->pixel_format));
/* layer update mandatory for mixer 16.0.33.0 */
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 915a3d0acff3..21f939074abc 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -3651,8 +3651,8 @@ void i915_debugfs_unregister(struct drm_i915_private *dev_priv);
int i915_debugfs_connector_add(struct drm_connector *connector);
void intel_display_crc_init(struct drm_device *dev);
#else
-static inline int i915_debugfs_register(struct drm_i915_private *) {return 0;}
-static inline void i915_debugfs_unregister(struct drm_i915_private *) {}
+static inline int i915_debugfs_register(struct drm_i915_private *dev_priv) {return 0;}
+static inline void i915_debugfs_unregister(struct drm_i915_private *dev_priv) {}
static inline int i915_debugfs_connector_add(struct drm_connector *connector)
{ return 0; }
static inline void intel_display_crc_init(struct drm_device *dev) {}
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index c457eed76f1f..dcf93b3d4fb6 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -5691,15 +5691,7 @@ static bool skl_cdclk_pcu_ready(struct drm_i915_private *dev_priv)
static bool skl_cdclk_wait_for_pcu_ready(struct drm_i915_private *dev_priv)
{
- unsigned int i;
-
- for (i = 0; i < 15; i++) {
- if (skl_cdclk_pcu_ready(dev_priv))
- return true;
- udelay(10);
- }
-
- return false;
+ return _wait_for(skl_cdclk_pcu_ready(dev_priv), 3000, 10) == 0;
}
static void skl_set_cdclk(struct drm_i915_private *dev_priv, int cdclk, int vco)
@@ -12114,21 +12106,11 @@ connected_sink_compute_bpp(struct intel_connector *connector,
pipe_config->pipe_bpp = connector->base.display_info.bpc*3;
}
- /* Clamp bpp to default limit on screens without EDID 1.4 */
- if (connector->base.display_info.bpc == 0) {
- int type = connector->base.connector_type;
- int clamp_bpp = 24;
-
- /* Fall back to 18 bpp when DP sink capability is unknown. */
- if (type == DRM_MODE_CONNECTOR_DisplayPort ||
- type == DRM_MODE_CONNECTOR_eDP)
- clamp_bpp = 18;
-
- if (bpp > clamp_bpp) {
- DRM_DEBUG_KMS("clamping display bpp (was %d) to default limit of %d\n",
- bpp, clamp_bpp);
- pipe_config->pipe_bpp = clamp_bpp;
- }
+ /* Clamp bpp to 8 on screens without EDID 1.4 */
+ if (connector->base.display_info.bpc == 0 && bpp > 24) {
+ DRM_DEBUG_KMS("clamping display bpp (was %d) to default limit of 24\n",
+ bpp);
+ pipe_config->pipe_bpp = 24;
}
}
diff --git a/drivers/gpu/drm/i915/intel_fbdev.c b/drivers/gpu/drm/i915/intel_fbdev.c
index 86b00c6db1a6..3e3632c18733 100644
--- a/drivers/gpu/drm/i915/intel_fbdev.c
+++ b/drivers/gpu/drm/i915/intel_fbdev.c
@@ -782,7 +782,7 @@ void intel_fbdev_set_suspend(struct drm_device *dev, int state, bool synchronous
struct intel_fbdev *ifbdev = dev_priv->fbdev;
struct fb_info *info;
- if (!ifbdev)
+ if (!ifbdev || !ifbdev->fb)
return;
info = ifbdev->helper.fbdev;
@@ -827,31 +827,28 @@ void intel_fbdev_set_suspend(struct drm_device *dev, int state, bool synchronous
void intel_fbdev_output_poll_changed(struct drm_device *dev)
{
- struct drm_i915_private *dev_priv = to_i915(dev);
- if (dev_priv->fbdev)
- drm_fb_helper_hotplug_event(&dev_priv->fbdev->helper);
+ struct intel_fbdev *ifbdev = to_i915(dev)->fbdev;
+
+ if (ifbdev && ifbdev->fb)
+ drm_fb_helper_hotplug_event(&ifbdev->helper);
}
void intel_fbdev_restore_mode(struct drm_device *dev)
{
- int ret;
- struct drm_i915_private *dev_priv = to_i915(dev);
- struct intel_fbdev *ifbdev = dev_priv->fbdev;
- struct drm_fb_helper *fb_helper;
+ struct intel_fbdev *ifbdev = to_i915(dev)->fbdev;
if (!ifbdev)
return;
intel_fbdev_sync(ifbdev);
+ if (!ifbdev->fb)
+ return;
- fb_helper = &ifbdev->helper;
-
- ret = drm_fb_helper_restore_fbdev_mode_unlocked(fb_helper);
- if (ret) {
+ if (drm_fb_helper_restore_fbdev_mode_unlocked(&ifbdev->helper)) {
DRM_DEBUG("failed to restore crtc mode\n");
} else {
- mutex_lock(&fb_helper->dev->struct_mutex);
+ mutex_lock(&dev->struct_mutex);
intel_fb_obj_invalidate(ifbdev->fb->obj, ORIGIN_GTT);
- mutex_unlock(&fb_helper->dev->struct_mutex);
+ mutex_unlock(&dev->struct_mutex);
}
}
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index f4f3fcc8b3be..97ba6c8cf907 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -4892,7 +4892,8 @@ void gen6_rps_idle(struct drm_i915_private *dev_priv)
else
gen6_set_rps(dev_priv, dev_priv->rps.idle_freq);
dev_priv->rps.last_adj = 0;
- I915_WRITE(GEN6_PMINTRMSK, 0xffffffff);
+ I915_WRITE(GEN6_PMINTRMSK,
+ gen6_sanitize_rps_pm_mask(dev_priv, ~0));
}
mutex_unlock(&dev_priv->rps.hw_lock);
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_gem.c b/drivers/gpu/drm/mediatek/mtk_drm_gem.c
index fa2ec0cd00e8..7abc550ebc00 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_gem.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_gem.c
@@ -54,15 +54,14 @@ struct mtk_drm_gem_obj *mtk_drm_gem_create(struct drm_device *dev,
obj = &mtk_gem->base;
- init_dma_attrs(&mtk_gem->dma_attrs);
- dma_set_attr(DMA_ATTR_WRITE_COMBINE, &mtk_gem->dma_attrs);
+ mtk_gem->dma_attrs = DMA_ATTR_WRITE_COMBINE;
if (!alloc_kmap)
- dma_set_attr(DMA_ATTR_NO_KERNEL_MAPPING, &mtk_gem->dma_attrs);
+ mtk_gem->dma_attrs |= DMA_ATTR_NO_KERNEL_MAPPING;
mtk_gem->cookie = dma_alloc_attrs(priv->dma_dev, obj->size,
&mtk_gem->dma_addr, GFP_KERNEL,
- &mtk_gem->dma_attrs);
+ mtk_gem->dma_attrs);
if (!mtk_gem->cookie) {
DRM_ERROR("failed to allocate %zx byte dma buffer", obj->size);
ret = -ENOMEM;
@@ -93,7 +92,7 @@ void mtk_drm_gem_free_object(struct drm_gem_object *obj)
drm_prime_gem_destroy(obj, mtk_gem->sg);
else
dma_free_attrs(priv->dma_dev, obj->size, mtk_gem->cookie,
- mtk_gem->dma_addr, &mtk_gem->dma_attrs);
+ mtk_gem->dma_addr, mtk_gem->dma_attrs);
/* release file pointer to gem object. */
drm_gem_object_release(obj);
@@ -173,7 +172,7 @@ static int mtk_drm_gem_object_mmap(struct drm_gem_object *obj,
vma->vm_pgoff = 0;
ret = dma_mmap_attrs(priv->dma_dev, vma, mtk_gem->cookie,
- mtk_gem->dma_addr, obj->size, &mtk_gem->dma_attrs);
+ mtk_gem->dma_addr, obj->size, mtk_gem->dma_attrs);
if (ret)
drm_gem_vm_close(vma);
@@ -224,7 +223,7 @@ struct sg_table *mtk_gem_prime_get_sg_table(struct drm_gem_object *obj)
ret = dma_get_sgtable_attrs(priv->dma_dev, sgt, mtk_gem->cookie,
mtk_gem->dma_addr, obj->size,
- &mtk_gem->dma_attrs);
+ mtk_gem->dma_attrs);
if (ret) {
DRM_ERROR("failed to allocate sgt, %d\n", ret);
kfree(sgt);
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_gem.h b/drivers/gpu/drm/mediatek/mtk_drm_gem.h
index 3a2a5624a1cb..2752718fa5b2 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_gem.h
+++ b/drivers/gpu/drm/mediatek/mtk_drm_gem.h
@@ -35,7 +35,7 @@ struct mtk_drm_gem_obj {
void *cookie;
void *kvaddr;
dma_addr_t dma_addr;
- struct dma_attrs dma_attrs;
+ unsigned long dma_attrs;
struct sg_table *sg;
};
diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
index 26f859ec24b3..8a0237008f74 100644
--- a/drivers/gpu/drm/msm/msm_drv.c
+++ b/drivers/gpu/drm/msm/msm_drv.c
@@ -238,11 +238,10 @@ static int msm_drm_uninit(struct device *dev)
}
if (priv->vram.paddr) {
- DEFINE_DMA_ATTRS(attrs);
- dma_set_attr(DMA_ATTR_NO_KERNEL_MAPPING, &attrs);
+ unsigned long attrs = DMA_ATTR_NO_KERNEL_MAPPING;
drm_mm_takedown(&priv->vram.mm);
dma_free_attrs(dev, priv->vram.size, NULL,
- priv->vram.paddr, &attrs);
+ priv->vram.paddr, attrs);
}
component_unbind_all(dev, ddev);
@@ -310,21 +309,21 @@ static int msm_init_vram(struct drm_device *dev)
}
if (size) {
- DEFINE_DMA_ATTRS(attrs);
+ unsigned long attrs = 0;
void *p;
priv->vram.size = size;
drm_mm_init(&priv->vram.mm, 0, (size >> PAGE_SHIFT) - 1);
- dma_set_attr(DMA_ATTR_NO_KERNEL_MAPPING, &attrs);
- dma_set_attr(DMA_ATTR_WRITE_COMBINE, &attrs);
+ attrs |= DMA_ATTR_NO_KERNEL_MAPPING;
+ attrs |= DMA_ATTR_WRITE_COMBINE;
/* note that for no-kernel-mapping, the vaddr returned
* is bogus, but non-null if allocation succeeded:
*/
p = dma_alloc_attrs(dev->dev, size,
- &priv->vram.paddr, GFP_KERNEL, &attrs);
+ &priv->vram.paddr, GFP_KERNEL, attrs);
if (!p) {
dev_err(dev->dev, "failed to allocate VRAM\n");
priv->vram.paddr = 0;
diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c
index 528bdeffb339..6190035edfea 100644
--- a/drivers/gpu/drm/nouveau/nouveau_bo.c
+++ b/drivers/gpu/drm/nouveau/nouveau_bo.c
@@ -1151,7 +1151,7 @@ nouveau_bo_move_flipd(struct ttm_buffer_object *bo, bool evict, bool intr,
if (ret)
goto out;
- ret = ttm_bo_move_ttm(bo, true, no_wait_gpu, new_mem);
+ ret = ttm_bo_move_ttm(bo, true, intr, no_wait_gpu, new_mem);
out:
ttm_bo_mem_put(bo, &tmp_mem);
return ret;
@@ -1179,7 +1179,7 @@ nouveau_bo_move_flips(struct ttm_buffer_object *bo, bool evict, bool intr,
if (ret)
return ret;
- ret = ttm_bo_move_ttm(bo, true, no_wait_gpu, &tmp_mem);
+ ret = ttm_bo_move_ttm(bo, true, intr, no_wait_gpu, &tmp_mem);
if (ret)
goto out;
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/instmem/gk20a.c b/drivers/gpu/drm/nouveau/nvkm/subdev/instmem/gk20a.c
index 6b8f2a19b2d9..a6a7fa0d7679 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/instmem/gk20a.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/instmem/gk20a.c
@@ -109,7 +109,7 @@ struct gk20a_instmem {
u16 iommu_bit;
/* Only used by DMA API */
- struct dma_attrs attrs;
+ unsigned long attrs;
};
#define gk20a_instmem(p) container_of((p), struct gk20a_instmem, base)
@@ -293,7 +293,7 @@ gk20a_instobj_dtor_dma(struct nvkm_memory *memory)
goto out;
dma_free_attrs(dev, node->base.mem.size << PAGE_SHIFT, node->base.vaddr,
- node->handle, &imem->attrs);
+ node->handle, imem->attrs);
out:
return node;
@@ -386,7 +386,7 @@ gk20a_instobj_ctor_dma(struct gk20a_instmem *imem, u32 npages, u32 align,
node->base.vaddr = dma_alloc_attrs(dev, npages << PAGE_SHIFT,
&node->handle, GFP_KERNEL,
- &imem->attrs);
+ imem->attrs);
if (!node->base.vaddr) {
nvkm_error(subdev, "cannot allocate DMA memory\n");
return -ENOMEM;
@@ -597,10 +597,9 @@ gk20a_instmem_new(struct nvkm_device *device, int index,
nvkm_info(&imem->base.subdev, "using IOMMU\n");
} else {
- init_dma_attrs(&imem->attrs);
- dma_set_attr(DMA_ATTR_NON_CONSISTENT, &imem->attrs);
- dma_set_attr(DMA_ATTR_WEAK_ORDERING, &imem->attrs);
- dma_set_attr(DMA_ATTR_WRITE_COMBINE, &imem->attrs);
+ imem->attrs = DMA_ATTR_NON_CONSISTENT |
+ DMA_ATTR_WEAK_ORDERING |
+ DMA_ATTR_WRITE_COMBINE;
nvkm_info(&imem->base.subdev, "using DMA API\n");
}
diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c b/drivers/gpu/drm/radeon/radeon_ttm.c
index ffdad81ef964..0c00e192c845 100644
--- a/drivers/gpu/drm/radeon/radeon_ttm.c
+++ b/drivers/gpu/drm/radeon/radeon_ttm.c
@@ -346,7 +346,7 @@ static int radeon_move_vram_ram(struct ttm_buffer_object *bo,
if (unlikely(r)) {
goto out_cleanup;
}
- r = ttm_bo_move_ttm(bo, true, no_wait_gpu, new_mem);
+ r = ttm_bo_move_ttm(bo, true, interruptible, no_wait_gpu, new_mem);
out_cleanup:
ttm_bo_mem_put(bo, &tmp_mem);
return r;
@@ -379,7 +379,7 @@ static int radeon_move_ram_vram(struct ttm_buffer_object *bo,
if (unlikely(r)) {
return r;
}
- r = ttm_bo_move_ttm(bo, true, no_wait_gpu, &tmp_mem);
+ r = ttm_bo_move_ttm(bo, true, interruptible, no_wait_gpu, &tmp_mem);
if (unlikely(r)) {
goto out_cleanup;
}
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
index e39fcef2e033..7316fc7fa0bd 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
@@ -196,7 +196,7 @@ void rcar_du_crtc_route_output(struct drm_crtc *crtc,
static unsigned int plane_zpos(struct rcar_du_plane *plane)
{
- return to_rcar_plane_state(plane->plane.state)->zpos;
+ return plane->plane.state->normalized_zpos;
}
static const struct rcar_du_format_info *
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.h b/drivers/gpu/drm/rcar-du/rcar_du_drv.h
index ed35467d96cf..c843c3134498 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_drv.h
+++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.h
@@ -92,7 +92,6 @@ struct rcar_du_device {
struct {
struct drm_property *alpha;
struct drm_property *colorkey;
- struct drm_property *zpos;
} props;
unsigned int dpad0_source;
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_hdmienc.c b/drivers/gpu/drm/rcar-du/rcar_du_hdmienc.c
index 4de3ff0dbebd..e03004f4588d 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_hdmienc.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_hdmienc.c
@@ -125,6 +125,7 @@ int rcar_du_hdmienc_init(struct rcar_du_device *rcdu,
/* Link drm_bridge to encoder */
bridge->encoder = encoder;
+ encoder->bridge = bridge;
ret = drm_bridge_attach(rcdu->ddev, bridge);
if (ret) {
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_kms.c b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
index 6bb032d8ac6b..f03eb55318c1 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_kms.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
@@ -527,11 +527,6 @@ static int rcar_du_properties_init(struct rcar_du_device *rcdu)
if (rcdu->props.colorkey == NULL)
return -ENOMEM;
- rcdu->props.zpos =
- drm_property_create_range(rcdu->ddev, 0, "zpos", 1, 7);
- if (rcdu->props.zpos == NULL)
- return -ENOMEM;
-
return 0;
}
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_plane.c b/drivers/gpu/drm/rcar-du/rcar_du_plane.c
index bfe31ca870cc..a74f8ed8ca2e 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_plane.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_plane.c
@@ -652,7 +652,7 @@ static void rcar_du_plane_reset(struct drm_plane *plane)
state->source = RCAR_DU_PLANE_MEMORY;
state->alpha = 255;
state->colorkey = RCAR_DU_COLORKEY_NONE;
- state->zpos = plane->type == DRM_PLANE_TYPE_PRIMARY ? 0 : 1;
+ state->state.zpos = plane->type == DRM_PLANE_TYPE_PRIMARY ? 0 : 1;
plane->state = &state->state;
plane->state->plane = plane;
@@ -670,8 +670,6 @@ static int rcar_du_plane_atomic_set_property(struct drm_plane *plane,
rstate->alpha = val;
else if (property == rcdu->props.colorkey)
rstate->colorkey = val;
- else if (property == rcdu->props.zpos)
- rstate->zpos = val;
else
return -EINVAL;
@@ -690,8 +688,6 @@ static int rcar_du_plane_atomic_get_property(struct drm_plane *plane,
*val = rstate->alpha;
else if (property == rcdu->props.colorkey)
*val = rstate->colorkey;
- else if (property == rcdu->props.zpos)
- *val = rstate->zpos;
else
return -EINVAL;
@@ -763,8 +759,7 @@ int rcar_du_planes_init(struct rcar_du_group *rgrp)
drm_object_attach_property(&plane->plane.base,
rcdu->props.colorkey,
RCAR_DU_COLORKEY_NONE);
- drm_object_attach_property(&plane->plane.base,
- rcdu->props.zpos, 1);
+ drm_plane_create_zpos_property(&plane->plane, 1, 1, 7);
}
return 0;
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_plane.h b/drivers/gpu/drm/rcar-du/rcar_du_plane.h
index b18b7b25dbfa..8b91dd3a46e4 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_plane.h
+++ b/drivers/gpu/drm/rcar-du/rcar_du_plane.h
@@ -51,7 +51,6 @@ static inline struct rcar_du_plane *to_rcar_plane(struct drm_plane *plane)
* @hwindex: 0-based hardware plane index, -1 means unused
* @alpha: value of the plane alpha property
* @colorkey: value of the plane colorkey property
- * @zpos: value of the plane zpos property
*/
struct rcar_du_plane_state {
struct drm_plane_state state;
@@ -62,7 +61,6 @@ struct rcar_du_plane_state {
unsigned int alpha;
unsigned int colorkey;
- unsigned int zpos;
};
static inline struct rcar_du_plane_state *
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_vsp.c b/drivers/gpu/drm/rcar-du/rcar_du_vsp.c
index 6ac717f2056f..83ebd162f3ef 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_vsp.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_vsp.c
@@ -43,12 +43,12 @@ void rcar_du_vsp_enable(struct rcar_du_crtc *crtc)
.src_y = 0,
.src_w = mode->hdisplay << 16,
.src_h = mode->vdisplay << 16,
+ .zpos = 0,
},
.format = rcar_du_format_info(DRM_FORMAT_ARGB8888),
.source = RCAR_DU_PLANE_VSPD1,
.alpha = 255,
.colorkey = 0,
- .zpos = 0,
};
if (rcdu->info->gen >= 3)
@@ -152,7 +152,7 @@ static void rcar_du_vsp_plane_setup(struct rcar_du_vsp_plane *plane)
.pixelformat = 0,
.pitch = fb->pitches[0],
.alpha = state->alpha,
- .zpos = state->zpos,
+ .zpos = state->state.zpos,
};
unsigned int i;
@@ -267,7 +267,7 @@ static void rcar_du_vsp_plane_reset(struct drm_plane *plane)
return;
state->alpha = 255;
- state->zpos = plane->type == DRM_PLANE_TYPE_PRIMARY ? 0 : 1;
+ state->state.zpos = plane->type == DRM_PLANE_TYPE_PRIMARY ? 0 : 1;
plane->state = &state->state;
plane->state->plane = plane;
@@ -282,8 +282,6 @@ static int rcar_du_vsp_plane_atomic_set_property(struct drm_plane *plane,
if (property == rcdu->props.alpha)
rstate->alpha = val;
- else if (property == rcdu->props.zpos)
- rstate->zpos = val;
else
return -EINVAL;
@@ -300,8 +298,6 @@ static int rcar_du_vsp_plane_atomic_get_property(struct drm_plane *plane,
if (property == rcdu->props.alpha)
*val = rstate->alpha;
- else if (property == rcdu->props.zpos)
- *val = rstate->zpos;
else
return -EINVAL;
@@ -381,8 +377,8 @@ int rcar_du_vsp_init(struct rcar_du_vsp *vsp)
drm_object_attach_property(&plane->plane.base,
rcdu->props.alpha, 255);
- drm_object_attach_property(&plane->plane.base,
- rcdu->props.zpos, 1);
+ drm_plane_create_zpos_property(&plane->plane, 1, 1,
+ vsp->num_planes - 1);
}
return 0;
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
index 059e902f872d..b70f9423379c 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
@@ -17,8 +17,6 @@
#include <drm/drm_gem.h>
#include <drm/drm_vma_manager.h>
-#include <linux/dma-attrs.h>
-
#include "rockchip_drm_drv.h"
#include "rockchip_drm_gem.h"
@@ -28,15 +26,14 @@ static int rockchip_gem_alloc_buf(struct rockchip_gem_object *rk_obj,
struct drm_gem_object *obj = &rk_obj->base;
struct drm_device *drm = obj->dev;
- init_dma_attrs(&rk_obj->dma_attrs);
- dma_set_attr(DMA_ATTR_WRITE_COMBINE, &rk_obj->dma_attrs);
+ rk_obj->dma_attrs = DMA_ATTR_WRITE_COMBINE;
if (!alloc_kmap)
- dma_set_attr(DMA_ATTR_NO_KERNEL_MAPPING, &rk_obj->dma_attrs);
+ rk_obj->dma_attrs |= DMA_ATTR_NO_KERNEL_MAPPING;
rk_obj->kvaddr = dma_alloc_attrs(drm->dev, obj->size,
&rk_obj->dma_addr, GFP_KERNEL,
- &rk_obj->dma_attrs);
+ rk_obj->dma_attrs);
if (!rk_obj->kvaddr) {
DRM_ERROR("failed to allocate %zu byte dma buffer", obj->size);
return -ENOMEM;
@@ -51,7 +48,7 @@ static void rockchip_gem_free_buf(struct rockchip_gem_object *rk_obj)
struct drm_device *drm = obj->dev;
dma_free_attrs(drm->dev, obj->size, rk_obj->kvaddr, rk_obj->dma_addr,
- &rk_obj->dma_attrs);
+ rk_obj->dma_attrs);
}
static int rockchip_drm_gem_object_mmap(struct drm_gem_object *obj,
@@ -70,7 +67,7 @@ static int rockchip_drm_gem_object_mmap(struct drm_gem_object *obj,
vma->vm_pgoff = 0;
ret = dma_mmap_attrs(drm->dev, vma, rk_obj->kvaddr, rk_obj->dma_addr,
- obj->size, &rk_obj->dma_attrs);
+ obj->size, rk_obj->dma_attrs);
if (ret)
drm_gem_vm_close(vma);
@@ -262,7 +259,7 @@ struct sg_table *rockchip_gem_prime_get_sg_table(struct drm_gem_object *obj)
ret = dma_get_sgtable_attrs(drm->dev, sgt, rk_obj->kvaddr,
rk_obj->dma_addr, obj->size,
- &rk_obj->dma_attrs);
+ rk_obj->dma_attrs);
if (ret) {
DRM_ERROR("failed to allocate sgt, %d\n", ret);
kfree(sgt);
@@ -276,7 +273,7 @@ void *rockchip_gem_prime_vmap(struct drm_gem_object *obj)
{
struct rockchip_gem_object *rk_obj = to_rockchip_obj(obj);
- if (dma_get_attr(DMA_ATTR_NO_KERNEL_MAPPING, &rk_obj->dma_attrs))
+ if (rk_obj->dma_attrs & DMA_ATTR_NO_KERNEL_MAPPING)
return NULL;
return rk_obj->kvaddr;
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_gem.h b/drivers/gpu/drm/rockchip/rockchip_drm_gem.h
index ad22618473a4..18b3488db4ec 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_gem.h
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_gem.h
@@ -23,7 +23,7 @@ struct rockchip_gem_object {
void *kvaddr;
dma_addr_t dma_addr;
- struct dma_attrs dma_attrs;
+ unsigned long dma_attrs;
};
struct sg_table *rockchip_gem_prime_get_sg_table(struct drm_gem_object *obj);
diff --git a/drivers/gpu/drm/sti/sti_cursor.c b/drivers/gpu/drm/sti/sti_cursor.c
index a263bbba4119..3b53f7f2e3fc 100644
--- a/drivers/gpu/drm/sti/sti_cursor.c
+++ b/drivers/gpu/drm/sti/sti_cursor.c
@@ -349,8 +349,8 @@ struct drm_plane_funcs sti_cursor_plane_helpers_funcs = {
.update_plane = drm_atomic_helper_update_plane,
.disable_plane = drm_atomic_helper_disable_plane,
.destroy = sti_cursor_destroy,
- .set_property = sti_plane_set_property,
- .reset = drm_atomic_helper_plane_reset,
+ .set_property = drm_atomic_helper_plane_set_property,
+ .reset = sti_plane_reset,
.atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
.late_register = sti_cursor_late_register,
diff --git a/drivers/gpu/drm/sti/sti_gdp.c b/drivers/gpu/drm/sti/sti_gdp.c
index bf63086a3dc8..b8d942ca45e8 100644
--- a/drivers/gpu/drm/sti/sti_gdp.c
+++ b/drivers/gpu/drm/sti/sti_gdp.c
@@ -886,8 +886,8 @@ struct drm_plane_funcs sti_gdp_plane_helpers_funcs = {
.update_plane = drm_atomic_helper_update_plane,
.disable_plane = drm_atomic_helper_disable_plane,
.destroy = sti_gdp_destroy,
- .set_property = sti_plane_set_property,
- .reset = drm_atomic_helper_plane_reset,
+ .set_property = drm_atomic_helper_plane_set_property,
+ .reset = sti_plane_reset,
.atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
.late_register = sti_gdp_late_register,
diff --git a/drivers/gpu/drm/sti/sti_hqvdp.c b/drivers/gpu/drm/sti/sti_hqvdp.c
index b03232247966..b5ee783e3e7c 100644
--- a/drivers/gpu/drm/sti/sti_hqvdp.c
+++ b/drivers/gpu/drm/sti/sti_hqvdp.c
@@ -1254,8 +1254,8 @@ struct drm_plane_funcs sti_hqvdp_plane_helpers_funcs = {
.update_plane = drm_atomic_helper_update_plane,
.disable_plane = drm_atomic_helper_disable_plane,
.destroy = sti_hqvdp_destroy,
- .set_property = sti_plane_set_property,
- .reset = drm_atomic_helper_plane_reset,
+ .set_property = drm_atomic_helper_plane_set_property,
+ .reset = sti_plane_reset,
.atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
.late_register = sti_hqvdp_late_register,
diff --git a/drivers/gpu/drm/sti/sti_mixer.c b/drivers/gpu/drm/sti/sti_mixer.c
index 1885c7ab5a8b..7d9aea805eab 100644
--- a/drivers/gpu/drm/sti/sti_mixer.c
+++ b/drivers/gpu/drm/sti/sti_mixer.c
@@ -239,13 +239,10 @@ static void sti_mixer_set_background_area(struct sti_mixer *mixer,
int sti_mixer_set_plane_depth(struct sti_mixer *mixer, struct sti_plane *plane)
{
- int plane_id, depth = plane->zorder;
+ int plane_id, depth = plane->drm_plane.state->normalized_zpos;
unsigned int i;
u32 mask, val;
- if ((depth < 1) || (depth > GAM_MIXER_NB_DEPTH_LEVEL))
- return 1;
-
switch (plane->desc) {
case STI_GDP_0:
plane_id = GAM_DEPTH_GDP0_ID;
@@ -278,8 +275,8 @@ int sti_mixer_set_plane_depth(struct sti_mixer *mixer, struct sti_plane *plane)
break;
}
- mask |= GAM_DEPTH_MASK_ID << (3 * (depth - 1));
- plane_id = plane_id << (3 * (depth - 1));
+ mask |= GAM_DEPTH_MASK_ID << (3 * depth);
+ plane_id = plane_id << (3 * depth);
DRM_DEBUG_DRIVER("%s %s depth=%d\n", sti_mixer_to_str(mixer),
sti_plane_to_str(plane), depth);
diff --git a/drivers/gpu/drm/sti/sti_plane.c b/drivers/gpu/drm/sti/sti_plane.c
index 0cf3335ef37c..ca4b3719a64a 100644
--- a/drivers/gpu/drm/sti/sti_plane.c
+++ b/drivers/gpu/drm/sti/sti_plane.c
@@ -14,15 +14,6 @@
#include "sti_drv.h"
#include "sti_plane.h"
-/* (Background) < GDP0 < GDP1 < HQVDP0 < GDP2 < GDP3 < (ForeGround) */
-enum sti_plane_desc sti_plane_default_zorder[] = {
- STI_GDP_0,
- STI_GDP_1,
- STI_HQVDP_0,
- STI_GDP_2,
- STI_GDP_3,
-};
-
const char *sti_plane_to_str(struct sti_plane *plane)
{
switch (plane->desc) {
@@ -96,59 +87,46 @@ void sti_plane_update_fps(struct sti_plane *plane,
plane->fps_info.fips_str);
}
-int sti_plane_set_property(struct drm_plane *drm_plane,
- struct drm_property *property,
- uint64_t val)
+static int sti_plane_get_default_zpos(enum drm_plane_type type)
{
- struct drm_device *dev = drm_plane->dev;
- struct sti_private *private = dev->dev_private;
- struct sti_plane *plane = to_sti_plane(drm_plane);
-
- DRM_DEBUG_DRIVER("\n");
-
- if (property == private->plane_zorder_property) {
- plane->zorder = val;
+ switch (type) {
+ case DRM_PLANE_TYPE_PRIMARY:
return 0;
+ case DRM_PLANE_TYPE_OVERLAY:
+ return 1;
+ case DRM_PLANE_TYPE_CURSOR:
+ return 7;
}
+ return 0;
+}
- return -EINVAL;
+void sti_plane_reset(struct drm_plane *plane)
+{
+ drm_atomic_helper_plane_reset(plane);
+ plane->state->zpos = sti_plane_get_default_zpos(plane->type);
}
-static void sti_plane_attach_zorder_property(struct drm_plane *drm_plane)
+static void sti_plane_attach_zorder_property(struct drm_plane *drm_plane,
+ enum drm_plane_type type)
{
- struct drm_device *dev = drm_plane->dev;
- struct sti_private *private = dev->dev_private;
- struct sti_plane *plane = to_sti_plane(drm_plane);
- struct drm_property *prop;
-
- prop = private->plane_zorder_property;
- if (!prop) {
- prop = drm_property_create_range(dev, 0, "zpos", 1,
- GAM_MIXER_NB_DEPTH_LEVEL);
- if (!prop)
- return;
-
- private->plane_zorder_property = prop;
+ int zpos = sti_plane_get_default_zpos(type);
+
+ switch (type) {
+ case DRM_PLANE_TYPE_PRIMARY:
+ case DRM_PLANE_TYPE_OVERLAY:
+ drm_plane_create_zpos_property(drm_plane, zpos, 0, 6);
+ break;
+ case DRM_PLANE_TYPE_CURSOR:
+ drm_plane_create_zpos_immutable_property(drm_plane, zpos);
+ break;
}
-
- drm_object_attach_property(&drm_plane->base, prop, plane->zorder);
}
void sti_plane_init_property(struct sti_plane *plane,
enum drm_plane_type type)
{
- unsigned int i;
-
- for (i = 0; i < ARRAY_SIZE(sti_plane_default_zorder); i++)
- if (sti_plane_default_zorder[i] == plane->desc)
- break;
-
- plane->zorder = i + 1;
-
- if (type == DRM_PLANE_TYPE_OVERLAY)
- sti_plane_attach_zorder_property(&plane->drm_plane);
+ sti_plane_attach_zorder_property(&plane->drm_plane, type);
- DRM_DEBUG_DRIVER("drm plane:%d mapped to %s with zorder:%d\n",
- plane->drm_plane.base.id,
- sti_plane_to_str(plane), plane->zorder);
+ DRM_DEBUG_DRIVER("drm plane:%d mapped to %s\n",
+ plane->drm_plane.base.id, sti_plane_to_str(plane));
}
diff --git a/drivers/gpu/drm/sti/sti_plane.h b/drivers/gpu/drm/sti/sti_plane.h
index e0ea1dd3bb88..ce3e8d6c88bb 100644
--- a/drivers/gpu/drm/sti/sti_plane.h
+++ b/drivers/gpu/drm/sti/sti_plane.h
@@ -66,14 +66,12 @@ struct sti_fps_info {
* @plane: drm plane it is bound to (if any)
* @desc: plane type & id
* @status: to know the status of the plane
- * @zorder: plane z-order
* @fps_info: frame per second info
*/
struct sti_plane {
struct drm_plane drm_plane;
enum sti_plane_desc desc;
enum sti_plane_status status;
- int zorder;
struct sti_fps_info fps_info;
};
@@ -82,10 +80,7 @@ void sti_plane_update_fps(struct sti_plane *plane,
bool new_frame,
bool new_field);
-int sti_plane_set_property(struct drm_plane *drm_plane,
- struct drm_property *property,
- uint64_t val);
-
void sti_plane_init_property(struct sti_plane *plane,
enum drm_plane_type type);
+void sti_plane_reset(struct drm_plane *plane);
#endif
diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index 4054d804fe06..42c074a9c955 100644
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -354,7 +354,8 @@ static int ttm_bo_handle_move_mem(struct ttm_buffer_object *bo,
if (!(old_man->flags & TTM_MEMTYPE_FLAG_FIXED) &&
!(new_man->flags & TTM_MEMTYPE_FLAG_FIXED))
- ret = ttm_bo_move_ttm(bo, evict, no_wait_gpu, mem);
+ ret = ttm_bo_move_ttm(bo, evict, interruptible, no_wait_gpu,
+ mem);
else if (bdev->driver->move)
ret = bdev->driver->move(bo, evict, interruptible,
no_wait_gpu, mem);
diff --git a/drivers/gpu/drm/ttm/ttm_bo_util.c b/drivers/gpu/drm/ttm/ttm_bo_util.c
index 2df602a35f92..f157a9efd220 100644
--- a/drivers/gpu/drm/ttm/ttm_bo_util.c
+++ b/drivers/gpu/drm/ttm/ttm_bo_util.c
@@ -45,7 +45,7 @@ void ttm_bo_free_old_node(struct ttm_buffer_object *bo)
}
int ttm_bo_move_ttm(struct ttm_buffer_object *bo,
- bool evict,
+ bool evict, bool interruptible,
bool no_wait_gpu, struct ttm_mem_reg *new_mem)
{
struct ttm_tt *ttm = bo->ttm;
@@ -53,6 +53,14 @@ int ttm_bo_move_ttm(struct ttm_buffer_object *bo,
int ret;
if (old_mem->mem_type != TTM_PL_SYSTEM) {
+ ret = ttm_bo_wait(bo, interruptible, no_wait_gpu);
+
+ if (unlikely(ret != 0)) {
+ if (ret != -ERESTARTSYS)
+ pr_err("Failed to expire sync object before unbinding TTM\n");
+ return ret;
+ }
+
ttm_tt_unbind(ttm);
ttm_bo_free_old_node(bo);
ttm_flag_masked(&old_mem->placement, TTM_PL_FLAG_SYSTEM,
diff --git a/drivers/infiniband/Kconfig b/drivers/infiniband/Kconfig
index 2137adfbd8c3..e9b7dc037ff8 100644
--- a/drivers/infiniband/Kconfig
+++ b/drivers/infiniband/Kconfig
@@ -84,6 +84,7 @@ source "drivers/infiniband/ulp/iser/Kconfig"
source "drivers/infiniband/ulp/isert/Kconfig"
source "drivers/infiniband/sw/rdmavt/Kconfig"
+source "drivers/infiniband/sw/rxe/Kconfig"
source "drivers/infiniband/hw/hfi1/Kconfig"
diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
index ad1b1adcf6f0..e6dfa1bd3def 100644
--- a/drivers/infiniband/core/cma.c
+++ b/drivers/infiniband/core/cma.c
@@ -68,6 +68,7 @@ MODULE_DESCRIPTION("Generic RDMA CM Agent");
MODULE_LICENSE("Dual BSD/GPL");
#define CMA_CM_RESPONSE_TIMEOUT 20
+#define CMA_QUERY_CLASSPORT_INFO_TIMEOUT 3000
#define CMA_MAX_CM_RETRIES 15
#define CMA_CM_MRA_SETTING (IB_CM_MRA_FLAG_DELAY | 24)
#define CMA_IBOE_PACKET_LIFETIME 18
@@ -162,6 +163,14 @@ struct rdma_bind_list {
unsigned short port;
};
+struct class_port_info_context {
+ struct ib_class_port_info *class_port_info;
+ struct ib_device *device;
+ struct completion done;
+ struct ib_sa_query *sa_query;
+ u8 port_num;
+};
+
static int cma_ps_alloc(struct net *net, enum rdma_port_space ps,
struct rdma_bind_list *bind_list, int snum)
{
@@ -306,6 +315,7 @@ struct cma_multicast {
struct sockaddr_storage addr;
struct kref mcref;
bool igmp_joined;
+ u8 join_state;
};
struct cma_work {
@@ -3752,10 +3762,63 @@ static void cma_set_mgid(struct rdma_id_private *id_priv,
}
}
+static void cma_query_sa_classport_info_cb(int status,
+ struct ib_class_port_info *rec,
+ void *context)
+{
+ struct class_port_info_context *cb_ctx = context;
+
+ WARN_ON(!context);
+
+ if (status || !rec) {
+ pr_debug("RDMA CM: %s port %u failed query ClassPortInfo status: %d\n",
+ cb_ctx->device->name, cb_ctx->port_num, status);
+ goto out;
+ }
+
+ memcpy(cb_ctx->class_port_info, rec, sizeof(struct ib_class_port_info));
+
+out:
+ complete(&cb_ctx->done);
+}
+
+static int cma_query_sa_classport_info(struct ib_device *device, u8 port_num,
+ struct ib_class_port_info *class_port_info)
+{
+ struct class_port_info_context *cb_ctx;
+ int ret;
+
+ cb_ctx = kmalloc(sizeof(*cb_ctx), GFP_KERNEL);
+ if (!cb_ctx)
+ return -ENOMEM;
+
+ cb_ctx->device = device;
+ cb_ctx->class_port_info = class_port_info;
+ cb_ctx->port_num = port_num;
+ init_completion(&cb_ctx->done);
+
+ ret = ib_sa_classport_info_rec_query(&sa_client, device, port_num,
+ CMA_QUERY_CLASSPORT_INFO_TIMEOUT,
+ GFP_KERNEL, cma_query_sa_classport_info_cb,
+ cb_ctx, &cb_ctx->sa_query);
+ if (ret < 0) {
+ pr_err("RDMA CM: %s port %u failed to send ClassPortInfo query, ret: %d\n",
+ device->name, port_num, ret);
+ goto out;
+ }
+
+ wait_for_completion(&cb_ctx->done);
+
+out:
+ kfree(cb_ctx);
+ return ret;
+}
+
static int cma_join_ib_multicast(struct rdma_id_private *id_priv,
struct cma_multicast *mc)
{
struct ib_sa_mcmember_rec rec;
+ struct ib_class_port_info class_port_info;
struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr;
ib_sa_comp_mask comp_mask;
int ret;
@@ -3774,7 +3837,24 @@ static int cma_join_ib_multicast(struct rdma_id_private *id_priv,
rec.qkey = cpu_to_be32(id_priv->qkey);
rdma_addr_get_sgid(dev_addr, &rec.port_gid);
rec.pkey = cpu_to_be16(ib_addr_get_pkey(dev_addr));
- rec.join_state = 1;
+ rec.join_state = mc->join_state;
+
+ if (rec.join_state == BIT(SENDONLY_FULLMEMBER_JOIN)) {
+ ret = cma_query_sa_classport_info(id_priv->id.device,
+ id_priv->id.port_num,
+ &class_port_info);
+
+ if (ret)
+ return ret;
+
+ if (!(ib_get_cpi_capmask2(&class_port_info) &
+ IB_SA_CAP_MASK2_SENDONLY_FULL_MEM_SUPPORT)) {
+ pr_warn("RDMA CM: %s port %u Unable to multicast join\n"
+ "RDMA CM: SM doesn't support Send Only Full Member option\n",
+ id_priv->id.device->name, id_priv->id.port_num);
+ return -EOPNOTSUPP;
+ }
+ }
comp_mask = IB_SA_MCMEMBER_REC_MGID | IB_SA_MCMEMBER_REC_PORT_GID |
IB_SA_MCMEMBER_REC_PKEY | IB_SA_MCMEMBER_REC_JOIN_STATE |
@@ -3843,6 +3923,9 @@ static int cma_iboe_join_multicast(struct rdma_id_private *id_priv,
struct sockaddr *addr = (struct sockaddr *)&mc->addr;
struct net_device *ndev = NULL;
enum ib_gid_type gid_type;
+ bool send_only;
+
+ send_only = mc->join_state == BIT(SENDONLY_FULLMEMBER_JOIN);
if (cma_zero_addr((struct sockaddr *)&mc->addr))
return -EINVAL;
@@ -3878,10 +3961,12 @@ static int cma_iboe_join_multicast(struct rdma_id_private *id_priv,
if (addr->sa_family == AF_INET) {
if (gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) {
mc->multicast.ib->rec.hop_limit = IPV6_DEFAULT_HOPLIMIT;
- err = cma_igmp_send(ndev, &mc->multicast.ib->rec.mgid,
- true);
- if (!err)
- mc->igmp_joined = true;
+ if (!send_only) {
+ err = cma_igmp_send(ndev, &mc->multicast.ib->rec.mgid,
+ true);
+ if (!err)
+ mc->igmp_joined = true;
+ }
}
} else {
if (gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP)
@@ -3911,7 +3996,7 @@ out1:
}
int rdma_join_multicast(struct rdma_cm_id *id, struct sockaddr *addr,
- void *context)
+ u8 join_state, void *context)
{
struct rdma_id_private *id_priv;
struct cma_multicast *mc;
@@ -3930,6 +4015,7 @@ int rdma_join_multicast(struct rdma_cm_id *id, struct sockaddr *addr,
mc->context = context;
mc->id_priv = id_priv;
mc->igmp_joined = false;
+ mc->join_state = join_state;
spin_lock(&id_priv->lock);
list_add(&mc->list, &id_priv->mc_list);
spin_unlock(&id_priv->lock);
diff --git a/drivers/infiniband/core/device.c b/drivers/infiniband/core/device.c
index 5c155fa91eec..760ef603a468 100644
--- a/drivers/infiniband/core/device.c
+++ b/drivers/infiniband/core/device.c
@@ -311,6 +311,15 @@ static int read_port_immutable(struct ib_device *device)
return 0;
}
+void ib_get_device_fw_str(struct ib_device *dev, char *str, size_t str_len)
+{
+ if (dev->get_dev_fw_str)
+ dev->get_dev_fw_str(dev, str, str_len);
+ else
+ str[0] = '\0';
+}
+EXPORT_SYMBOL(ib_get_device_fw_str);
+
/**
* ib_register_device - Register an IB device with IB core
* @device:Device to register
diff --git a/drivers/infiniband/core/iwcm.c b/drivers/infiniband/core/iwcm.c
index f0572049d291..357624f8b9d3 100644
--- a/drivers/infiniband/core/iwcm.c
+++ b/drivers/infiniband/core/iwcm.c
@@ -183,15 +183,14 @@ static void free_cm_id(struct iwcm_id_private *cm_id_priv)
/*
* Release a reference on cm_id. If the last reference is being
- * released, enable the waiting thread (in iw_destroy_cm_id) to
- * get woken up, and return 1 if a thread is already waiting.
+ * released, free the cm_id and return 1.
*/
static int iwcm_deref_id(struct iwcm_id_private *cm_id_priv)
{
BUG_ON(atomic_read(&cm_id_priv->refcount)==0);
if (atomic_dec_and_test(&cm_id_priv->refcount)) {
BUG_ON(!list_empty(&cm_id_priv->work_list));
- complete(&cm_id_priv->destroy_comp);
+ free_cm_id(cm_id_priv);
return 1;
}
@@ -208,19 +207,10 @@ static void add_ref(struct iw_cm_id *cm_id)
static void rem_ref(struct iw_cm_id *cm_id)
{
struct iwcm_id_private *cm_id_priv;
- int cb_destroy;
cm_id_priv = container_of(cm_id, struct iwcm_id_private, id);
- /*
- * Test bit before deref in case the cm_id gets freed on another
- * thread.
- */
- cb_destroy = test_bit(IWCM_F_CALLBACK_DESTROY, &cm_id_priv->flags);
- if (iwcm_deref_id(cm_id_priv) && cb_destroy) {
- BUG_ON(!list_empty(&cm_id_priv->work_list));
- free_cm_id(cm_id_priv);
- }
+ (void)iwcm_deref_id(cm_id_priv);
}
static int cm_event_handler(struct iw_cm_id *cm_id, struct iw_cm_event *event);
@@ -370,6 +360,12 @@ static void destroy_cm_id(struct iw_cm_id *cm_id)
wait_event(cm_id_priv->connect_wait,
!test_bit(IWCM_F_CONNECT_WAIT, &cm_id_priv->flags));
+ /*
+ * Since we're deleting the cm_id, drop any events that
+ * might arrive before the last dereference.
+ */
+ set_bit(IWCM_F_DROP_EVENTS, &cm_id_priv->flags);
+
spin_lock_irqsave(&cm_id_priv->lock, flags);
switch (cm_id_priv->state) {
case IW_CM_STATE_LISTEN:
@@ -433,13 +429,7 @@ void iw_destroy_cm_id(struct iw_cm_id *cm_id)
struct iwcm_id_private *cm_id_priv;
cm_id_priv = container_of(cm_id, struct iwcm_id_private, id);
- BUG_ON(test_bit(IWCM_F_CALLBACK_DESTROY, &cm_id_priv->flags));
-
destroy_cm_id(cm_id);
-
- wait_for_completion(&cm_id_priv->destroy_comp);
-
- free_cm_id(cm_id_priv);
}
EXPORT_SYMBOL(iw_destroy_cm_id);
@@ -809,10 +799,7 @@ static void cm_conn_req_handler(struct iwcm_id_private *listen_id_priv,
ret = cm_id->cm_handler(cm_id, iw_event);
if (ret) {
iw_cm_reject(cm_id, NULL, 0);
- set_bit(IWCM_F_CALLBACK_DESTROY, &cm_id_priv->flags);
- destroy_cm_id(cm_id);
- if (atomic_read(&cm_id_priv->refcount)==0)
- free_cm_id(cm_id_priv);
+ iw_destroy_cm_id(cm_id);
}
out:
@@ -1000,7 +987,6 @@ static void cm_work_handler(struct work_struct *_work)
unsigned long flags;
int empty;
int ret = 0;
- int destroy_id;
spin_lock_irqsave(&cm_id_priv->lock, flags);
empty = list_empty(&cm_id_priv->work_list);
@@ -1013,20 +999,14 @@ static void cm_work_handler(struct work_struct *_work)
put_work(work);
spin_unlock_irqrestore(&cm_id_priv->lock, flags);
- ret = process_event(cm_id_priv, &levent);
- if (ret) {
- set_bit(IWCM_F_CALLBACK_DESTROY, &cm_id_priv->flags);
- destroy_cm_id(&cm_id_priv->id);
- }
- BUG_ON(atomic_read(&cm_id_priv->refcount)==0);
- destroy_id = test_bit(IWCM_F_CALLBACK_DESTROY, &cm_id_priv->flags);
- if (iwcm_deref_id(cm_id_priv)) {
- if (destroy_id) {
- BUG_ON(!list_empty(&cm_id_priv->work_list));
- free_cm_id(cm_id_priv);
- }
+ if (!test_bit(IWCM_F_DROP_EVENTS, &cm_id_priv->flags)) {
+ ret = process_event(cm_id_priv, &levent);
+ if (ret)
+ destroy_cm_id(&cm_id_priv->id);
+ } else
+ pr_debug("dropping event %d\n", levent.event);
+ if (iwcm_deref_id(cm_id_priv))
return;
- }
if (empty)
return;
spin_lock_irqsave(&cm_id_priv->lock, flags);
diff --git a/drivers/infiniband/core/iwcm.h b/drivers/infiniband/core/iwcm.h
index 3f6cc82564c8..82c2cd1b0a80 100644
--- a/drivers/infiniband/core/iwcm.h
+++ b/drivers/infiniband/core/iwcm.h
@@ -56,7 +56,7 @@ struct iwcm_id_private {
struct list_head work_free_list;
};
-#define IWCM_F_CALLBACK_DESTROY 1
+#define IWCM_F_DROP_EVENTS 1
#define IWCM_F_CONNECT_WAIT 2
#endif /* IWCM_H */
diff --git a/drivers/infiniband/core/iwpm_util.c b/drivers/infiniband/core/iwpm_util.c
index b65e06c560d7..ade71e7f0131 100644
--- a/drivers/infiniband/core/iwpm_util.c
+++ b/drivers/infiniband/core/iwpm_util.c
@@ -37,6 +37,7 @@
#define IWPM_MAPINFO_HASH_MASK (IWPM_MAPINFO_HASH_SIZE - 1)
#define IWPM_REMINFO_HASH_SIZE 64
#define IWPM_REMINFO_HASH_MASK (IWPM_REMINFO_HASH_SIZE - 1)
+#define IWPM_MSG_SIZE 512
static LIST_HEAD(iwpm_nlmsg_req_list);
static DEFINE_SPINLOCK(iwpm_nlmsg_req_lock);
@@ -452,7 +453,7 @@ struct sk_buff *iwpm_create_nlmsg(u32 nl_op, struct nlmsghdr **nlh,
{
struct sk_buff *skb = NULL;
- skb = dev_alloc_skb(NLMSG_GOODSIZE);
+ skb = dev_alloc_skb(IWPM_MSG_SIZE);
if (!skb) {
pr_err("%s Unable to allocate skb\n", __func__);
goto create_nlmsg_exit;
diff --git a/drivers/infiniband/core/multicast.c b/drivers/infiniband/core/multicast.c
index a83ec28a147b..3a3c5d73bbfc 100644
--- a/drivers/infiniband/core/multicast.c
+++ b/drivers/infiniband/core/multicast.c
@@ -93,18 +93,6 @@ enum {
struct mcast_member;
-/*
-* There are 4 types of join states:
-* FullMember, NonMember, SendOnlyNonMember, SendOnlyFullMember.
-*/
-enum {
- FULLMEMBER_JOIN,
- NONMEMBER_JOIN,
- SENDONLY_NONMEBER_JOIN,
- SENDONLY_FULLMEMBER_JOIN,
- NUM_JOIN_MEMBERSHIP_TYPES,
-};
-
struct mcast_group {
struct ib_sa_mcmember_rec rec;
struct rb_node node;
diff --git a/drivers/infiniband/core/netlink.c b/drivers/infiniband/core/netlink.c
index 9b8c20c8209b..10469b0088b5 100644
--- a/drivers/infiniband/core/netlink.c
+++ b/drivers/infiniband/core/netlink.c
@@ -229,7 +229,10 @@ static void ibnl_rcv(struct sk_buff *skb)
int ibnl_unicast(struct sk_buff *skb, struct nlmsghdr *nlh,
__u32 pid)
{
- return nlmsg_unicast(nls, skb, pid);
+ int err;
+
+ err = netlink_unicast(nls, skb, pid, 0);
+ return (err < 0) ? err : 0;
}
EXPORT_SYMBOL(ibnl_unicast);
@@ -252,6 +255,7 @@ int __init ibnl_init(void)
return -ENOMEM;
}
+ nls->sk_sndtimeo = 10 * HZ;
return 0;
}
diff --git a/drivers/infiniband/core/rw.c b/drivers/infiniband/core/rw.c
index 1eb9b1294a63..dbfd854c32c9 100644
--- a/drivers/infiniband/core/rw.c
+++ b/drivers/infiniband/core/rw.c
@@ -58,19 +58,13 @@ static inline bool rdma_rw_io_needs_mr(struct ib_device *dev, u8 port_num,
return false;
}
-static inline u32 rdma_rw_max_sge(struct ib_device *dev,
- enum dma_data_direction dir)
-{
- return dir == DMA_TO_DEVICE ?
- dev->attrs.max_sge : dev->attrs.max_sge_rd;
-}
-
static inline u32 rdma_rw_fr_page_list_len(struct ib_device *dev)
{
/* arbitrary limit to avoid allocating gigantic resources */
return min_t(u32, dev->attrs.max_fast_reg_page_list_len, 256);
}
+/* Caller must have zero-initialized *reg. */
static int rdma_rw_init_one_mr(struct ib_qp *qp, u8 port_num,
struct rdma_rw_reg_ctx *reg, struct scatterlist *sg,
u32 sg_cnt, u32 offset)
@@ -114,6 +108,7 @@ static int rdma_rw_init_mr_wrs(struct rdma_rw_ctx *ctx, struct ib_qp *qp,
u8 port_num, struct scatterlist *sg, u32 sg_cnt, u32 offset,
u64 remote_addr, u32 rkey, enum dma_data_direction dir)
{
+ struct rdma_rw_reg_ctx *prev = NULL;
u32 pages_per_mr = rdma_rw_fr_page_list_len(qp->pd->device);
int i, j, ret = 0, count = 0;
@@ -125,7 +120,6 @@ static int rdma_rw_init_mr_wrs(struct rdma_rw_ctx *ctx, struct ib_qp *qp,
}
for (i = 0; i < ctx->nr_ops; i++) {
- struct rdma_rw_reg_ctx *prev = i ? &ctx->reg[i - 1] : NULL;
struct rdma_rw_reg_ctx *reg = &ctx->reg[i];
u32 nents = min(sg_cnt, pages_per_mr);
@@ -162,9 +156,13 @@ static int rdma_rw_init_mr_wrs(struct rdma_rw_ctx *ctx, struct ib_qp *qp,
sg_cnt -= nents;
for (j = 0; j < nents; j++)
sg = sg_next(sg);
+ prev = reg;
offset = 0;
}
+ if (prev)
+ prev->wr.wr.next = NULL;
+
ctx->type = RDMA_RW_MR;
return count;
@@ -181,7 +179,8 @@ static int rdma_rw_init_map_wrs(struct rdma_rw_ctx *ctx, struct ib_qp *qp,
u64 remote_addr, u32 rkey, enum dma_data_direction dir)
{
struct ib_device *dev = qp->pd->device;
- u32 max_sge = rdma_rw_max_sge(dev, dir);
+ u32 max_sge = dir == DMA_TO_DEVICE ? qp->max_write_sge :
+ qp->max_read_sge;
struct ib_sge *sge;
u32 total_len = 0, i, j;
@@ -205,11 +204,10 @@ static int rdma_rw_init_map_wrs(struct rdma_rw_ctx *ctx, struct ib_qp *qp,
rdma_wr->wr.opcode = IB_WR_RDMA_READ;
rdma_wr->remote_addr = remote_addr + total_len;
rdma_wr->rkey = rkey;
+ rdma_wr->wr.num_sge = nr_sge;
rdma_wr->wr.sg_list = sge;
for (j = 0; j < nr_sge; j++, sg = sg_next(sg)) {
- rdma_wr->wr.num_sge++;
-
sge->addr = ib_sg_dma_address(dev, sg) + offset;
sge->length = ib_sg_dma_len(dev, sg) - offset;
sge->lkey = qp->pd->local_dma_lkey;
@@ -220,8 +218,8 @@ static int rdma_rw_init_map_wrs(struct rdma_rw_ctx *ctx, struct ib_qp *qp,
offset = 0;
}
- if (i + 1 < ctx->nr_ops)
- rdma_wr->wr.next = &ctx->map.wrs[i + 1].wr;
+ rdma_wr->wr.next = i + 1 < ctx->nr_ops ?
+ &ctx->map.wrs[i + 1].wr : NULL;
}
ctx->type = RDMA_RW_MULTI_WR;
diff --git a/drivers/infiniband/core/sa_query.c b/drivers/infiniband/core/sa_query.c
index e95538650dc6..b9bf7aa055e7 100644
--- a/drivers/infiniband/core/sa_query.c
+++ b/drivers/infiniband/core/sa_query.c
@@ -65,10 +65,17 @@ struct ib_sa_sm_ah {
u8 src_path_mask;
};
+struct ib_sa_classport_cache {
+ bool valid;
+ struct ib_class_port_info data;
+};
+
struct ib_sa_port {
struct ib_mad_agent *agent;
struct ib_sa_sm_ah *sm_ah;
struct work_struct update_task;
+ struct ib_sa_classport_cache classport_info;
+ spinlock_t classport_lock; /* protects class port info set */
spinlock_t ah_lock;
u8 port_num;
};
@@ -998,6 +1005,13 @@ static void ib_sa_event(struct ib_event_handler *handler, struct ib_event *event
port->sm_ah = NULL;
spin_unlock_irqrestore(&port->ah_lock, flags);
+ if (event->event == IB_EVENT_SM_CHANGE ||
+ event->event == IB_EVENT_CLIENT_REREGISTER ||
+ event->event == IB_EVENT_LID_CHANGE) {
+ spin_lock_irqsave(&port->classport_lock, flags);
+ port->classport_info.valid = false;
+ spin_unlock_irqrestore(&port->classport_lock, flags);
+ }
queue_work(ib_wq, &sa_dev->port[event->element.port_num -
sa_dev->start_port].update_task);
}
@@ -1719,6 +1733,7 @@ static void ib_sa_classport_info_rec_callback(struct ib_sa_query *sa_query,
int status,
struct ib_sa_mad *mad)
{
+ unsigned long flags;
struct ib_sa_classport_info_query *query =
container_of(sa_query, struct ib_sa_classport_info_query, sa_query);
@@ -1728,6 +1743,16 @@ static void ib_sa_classport_info_rec_callback(struct ib_sa_query *sa_query,
ib_unpack(classport_info_rec_table,
ARRAY_SIZE(classport_info_rec_table),
mad->data, &rec);
+
+ spin_lock_irqsave(&sa_query->port->classport_lock, flags);
+ if (!status && !sa_query->port->classport_info.valid) {
+ memcpy(&sa_query->port->classport_info.data, &rec,
+ sizeof(sa_query->port->classport_info.data));
+
+ sa_query->port->classport_info.valid = true;
+ }
+ spin_unlock_irqrestore(&sa_query->port->classport_lock, flags);
+
query->callback(status, &rec, query->context);
} else {
query->callback(status, NULL, query->context);
@@ -1754,7 +1779,9 @@ int ib_sa_classport_info_rec_query(struct ib_sa_client *client,
struct ib_sa_port *port;
struct ib_mad_agent *agent;
struct ib_sa_mad *mad;
+ struct ib_class_port_info cached_class_port_info;
int ret;
+ unsigned long flags;
if (!sa_dev)
return -ENODEV;
@@ -1762,6 +1789,17 @@ int ib_sa_classport_info_rec_query(struct ib_sa_client *client,
port = &sa_dev->port[port_num - sa_dev->start_port];
agent = port->agent;
+ /* Use cached ClassPortInfo attribute if valid instead of sending mad */
+ spin_lock_irqsave(&port->classport_lock, flags);
+ if (port->classport_info.valid && callback) {
+ memcpy(&cached_class_port_info, &port->classport_info.data,
+ sizeof(cached_class_port_info));
+ spin_unlock_irqrestore(&port->classport_lock, flags);
+ callback(0, &cached_class_port_info, context);
+ return 0;
+ }
+ spin_unlock_irqrestore(&port->classport_lock, flags);
+
query = kzalloc(sizeof(*query), gfp_mask);
if (!query)
return -ENOMEM;
@@ -1885,6 +1923,9 @@ static void ib_sa_add_one(struct ib_device *device)
sa_dev->port[i].sm_ah = NULL;
sa_dev->port[i].port_num = i + s;
+ spin_lock_init(&sa_dev->port[i].classport_lock);
+ sa_dev->port[i].classport_info.valid = false;
+
sa_dev->port[i].agent =
ib_register_mad_agent(device, i + s, IB_QPT_GSI,
NULL, 0, send_handler,
diff --git a/drivers/infiniband/core/sysfs.c b/drivers/infiniband/core/sysfs.c
index 60df4f8e81be..15defefecb4f 100644
--- a/drivers/infiniband/core/sysfs.c
+++ b/drivers/infiniband/core/sysfs.c
@@ -38,6 +38,7 @@
#include <linux/stat.h>
#include <linux/string.h>
#include <linux/netdevice.h>
+#include <linux/ethtool.h>
#include <rdma/ib_mad.h>
#include <rdma/ib_pma.h>
@@ -1200,16 +1201,28 @@ static ssize_t set_node_desc(struct device *device,
return count;
}
+static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
+ char *buf)
+{
+ struct ib_device *dev = container_of(device, struct ib_device, dev);
+
+ ib_get_device_fw_str(dev, buf, PAGE_SIZE);
+ strlcat(buf, "\n", PAGE_SIZE);
+ return strlen(buf);
+}
+
static DEVICE_ATTR(node_type, S_IRUGO, show_node_type, NULL);
static DEVICE_ATTR(sys_image_guid, S_IRUGO, show_sys_image_guid, NULL);
static DEVICE_ATTR(node_guid, S_IRUGO, show_node_guid, NULL);
static DEVICE_ATTR(node_desc, S_IRUGO | S_IWUSR, show_node_desc, set_node_desc);
+static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
static struct device_attribute *ib_class_attributes[] = {
&dev_attr_node_type,
&dev_attr_sys_image_guid,
&dev_attr_node_guid,
- &dev_attr_node_desc
+ &dev_attr_node_desc,
+ &dev_attr_fw_ver,
};
static void free_port_list_attributes(struct ib_device *device)
diff --git a/drivers/infiniband/core/ucma.c b/drivers/infiniband/core/ucma.c
index c0f3826abb30..2825ece91d3c 100644
--- a/drivers/infiniband/core/ucma.c
+++ b/drivers/infiniband/core/ucma.c
@@ -106,6 +106,7 @@ struct ucma_multicast {
int events_reported;
u64 uid;
+ u8 join_state;
struct list_head list;
struct sockaddr_storage addr;
};
@@ -1317,12 +1318,20 @@ static ssize_t ucma_process_join(struct ucma_file *file,
struct ucma_multicast *mc;
struct sockaddr *addr;
int ret;
+ u8 join_state;
if (out_len < sizeof(resp))
return -ENOSPC;
addr = (struct sockaddr *) &cmd->addr;
- if (cmd->reserved || !cmd->addr_size || (cmd->addr_size != rdma_addr_size(addr)))
+ if (!cmd->addr_size || (cmd->addr_size != rdma_addr_size(addr)))
+ return -EINVAL;
+
+ if (cmd->join_flags == RDMA_MC_JOIN_FLAG_FULLMEMBER)
+ join_state = BIT(FULLMEMBER_JOIN);
+ else if (cmd->join_flags == RDMA_MC_JOIN_FLAG_SENDONLY_FULLMEMBER)
+ join_state = BIT(SENDONLY_FULLMEMBER_JOIN);
+ else
return -EINVAL;
ctx = ucma_get_ctx(file, cmd->id);
@@ -1335,10 +1344,11 @@ static ssize_t ucma_process_join(struct ucma_file *file,
ret = -ENOMEM;
goto err1;
}
-
+ mc->join_state = join_state;
mc->uid = cmd->uid;
memcpy(&mc->addr, addr, cmd->addr_size);
- ret = rdma_join_multicast(ctx->cm_id, (struct sockaddr *) &mc->addr, mc);
+ ret = rdma_join_multicast(ctx->cm_id, (struct sockaddr *)&mc->addr,
+ join_state, mc);
if (ret)
goto err2;
@@ -1382,7 +1392,7 @@ static ssize_t ucma_join_ip_multicast(struct ucma_file *file,
join_cmd.uid = cmd.uid;
join_cmd.id = cmd.id;
join_cmd.addr_size = rdma_addr_size((struct sockaddr *) &cmd.addr);
- join_cmd.reserved = 0;
+ join_cmd.join_flags = RDMA_MC_JOIN_FLAG_FULLMEMBER;
memcpy(&join_cmd.addr, &cmd.addr, join_cmd.addr_size);
return ucma_process_join(file, &join_cmd, out_len);
diff --git a/drivers/infiniband/core/umem.c b/drivers/infiniband/core/umem.c
index fe4d2e1a8b58..c68746ce6624 100644
--- a/drivers/infiniband/core/umem.c
+++ b/drivers/infiniband/core/umem.c
@@ -37,7 +37,6 @@
#include <linux/sched.h>
#include <linux/export.h>
#include <linux/hugetlb.h>
-#include <linux/dma-attrs.h>
#include <linux/slab.h>
#include <rdma/ib_umem_odp.h>
@@ -92,12 +91,12 @@ struct ib_umem *ib_umem_get(struct ib_ucontext *context, unsigned long addr,
unsigned long npages;
int ret;
int i;
- DEFINE_DMA_ATTRS(attrs);
+ unsigned long dma_attrs = 0;
struct scatterlist *sg, *sg_list_start;
int need_release = 0;
if (dmasync)
- dma_set_attr(DMA_ATTR_WRITE_BARRIER, &attrs);
+ dma_attrs |= DMA_ATTR_WRITE_BARRIER;
if (!size)
return ERR_PTR(-EINVAL);
@@ -215,7 +214,7 @@ struct ib_umem *ib_umem_get(struct ib_ucontext *context, unsigned long addr,
umem->sg_head.sgl,
umem->npages,
DMA_BIDIRECTIONAL,
- &attrs);
+ dma_attrs);
if (umem->nmap <= 0) {
ret = -ENOMEM;
diff --git a/drivers/infiniband/core/uverbs.h b/drivers/infiniband/core/uverbs.h
index 612ccfd39bf9..df26a741cda6 100644
--- a/drivers/infiniband/core/uverbs.h
+++ b/drivers/infiniband/core/uverbs.h
@@ -116,6 +116,7 @@ struct ib_uverbs_event_file {
struct ib_uverbs_file {
struct kref ref;
struct mutex mutex;
+ struct mutex cleanup_mutex; /* protect cleanup */
struct ib_uverbs_device *device;
struct ib_ucontext *ucontext;
struct ib_event_handler event_handler;
@@ -162,6 +163,10 @@ struct ib_uqp_object {
struct ib_uxrcd_object *uxrcd;
};
+struct ib_uwq_object {
+ struct ib_uevent_object uevent;
+};
+
struct ib_ucq_object {
struct ib_uobject uobject;
struct ib_uverbs_file *uverbs_file;
@@ -181,6 +186,8 @@ extern struct idr ib_uverbs_qp_idr;
extern struct idr ib_uverbs_srq_idr;
extern struct idr ib_uverbs_xrcd_idr;
extern struct idr ib_uverbs_rule_idr;
+extern struct idr ib_uverbs_wq_idr;
+extern struct idr ib_uverbs_rwq_ind_tbl_idr;
void idr_remove_uobj(struct idr *idp, struct ib_uobject *uobj);
@@ -199,6 +206,7 @@ void ib_uverbs_release_uevent(struct ib_uverbs_file *file,
void ib_uverbs_comp_handler(struct ib_cq *cq, void *cq_context);
void ib_uverbs_cq_event_handler(struct ib_event *event, void *context_ptr);
void ib_uverbs_qp_event_handler(struct ib_event *event, void *context_ptr);
+void ib_uverbs_wq_event_handler(struct ib_event *event, void *context_ptr);
void ib_uverbs_srq_event_handler(struct ib_event *event, void *context_ptr);
void ib_uverbs_event_handler(struct ib_event_handler *handler,
struct ib_event *event);
@@ -219,6 +227,7 @@ struct ib_uverbs_flow_spec {
struct ib_uverbs_flow_spec_eth eth;
struct ib_uverbs_flow_spec_ipv4 ipv4;
struct ib_uverbs_flow_spec_tcp_udp tcp_udp;
+ struct ib_uverbs_flow_spec_ipv6 ipv6;
};
};
@@ -275,5 +284,10 @@ IB_UVERBS_DECLARE_EX_CMD(destroy_flow);
IB_UVERBS_DECLARE_EX_CMD(query_device);
IB_UVERBS_DECLARE_EX_CMD(create_cq);
IB_UVERBS_DECLARE_EX_CMD(create_qp);
+IB_UVERBS_DECLARE_EX_CMD(create_wq);
+IB_UVERBS_DECLARE_EX_CMD(modify_wq);
+IB_UVERBS_DECLARE_EX_CMD(destroy_wq);
+IB_UVERBS_DECLARE_EX_CMD(create_rwq_ind_table);
+IB_UVERBS_DECLARE_EX_CMD(destroy_rwq_ind_table);
#endif /* UVERBS_H */
diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c
index 825021d1008b..f6647318138d 100644
--- a/drivers/infiniband/core/uverbs_cmd.c
+++ b/drivers/infiniband/core/uverbs_cmd.c
@@ -57,6 +57,8 @@ static struct uverbs_lock_class ah_lock_class = { .name = "AH-uobj" };
static struct uverbs_lock_class srq_lock_class = { .name = "SRQ-uobj" };
static struct uverbs_lock_class xrcd_lock_class = { .name = "XRCD-uobj" };
static struct uverbs_lock_class rule_lock_class = { .name = "RULE-uobj" };
+static struct uverbs_lock_class wq_lock_class = { .name = "WQ-uobj" };
+static struct uverbs_lock_class rwq_ind_table_lock_class = { .name = "IND_TBL-uobj" };
/*
* The ib_uobject locking scheme is as follows:
@@ -243,6 +245,27 @@ static struct ib_qp *idr_read_qp(int qp_handle, struct ib_ucontext *context)
return idr_read_obj(&ib_uverbs_qp_idr, qp_handle, context, 0);
}
+static struct ib_wq *idr_read_wq(int wq_handle, struct ib_ucontext *context)
+{
+ return idr_read_obj(&ib_uverbs_wq_idr, wq_handle, context, 0);
+}
+
+static void put_wq_read(struct ib_wq *wq)
+{
+ put_uobj_read(wq->uobject);
+}
+
+static struct ib_rwq_ind_table *idr_read_rwq_indirection_table(int ind_table_handle,
+ struct ib_ucontext *context)
+{
+ return idr_read_obj(&ib_uverbs_rwq_ind_tbl_idr, ind_table_handle, context, 0);
+}
+
+static void put_rwq_indirection_table_read(struct ib_rwq_ind_table *ind_table)
+{
+ put_uobj_read(ind_table->uobject);
+}
+
static struct ib_qp *idr_write_qp(int qp_handle, struct ib_ucontext *context)
{
struct ib_uobject *uobj;
@@ -326,6 +349,8 @@ ssize_t ib_uverbs_get_context(struct ib_uverbs_file *file,
INIT_LIST_HEAD(&ucontext->qp_list);
INIT_LIST_HEAD(&ucontext->srq_list);
INIT_LIST_HEAD(&ucontext->ah_list);
+ INIT_LIST_HEAD(&ucontext->wq_list);
+ INIT_LIST_HEAD(&ucontext->rwq_ind_tbl_list);
INIT_LIST_HEAD(&ucontext->xrcd_list);
INIT_LIST_HEAD(&ucontext->rule_list);
rcu_read_lock();
@@ -1750,6 +1775,8 @@ static int create_qp(struct ib_uverbs_file *file,
struct ib_qp_init_attr attr = {};
struct ib_uverbs_ex_create_qp_resp resp;
int ret;
+ struct ib_rwq_ind_table *ind_tbl = NULL;
+ bool has_sq = true;
if (cmd->qp_type == IB_QPT_RAW_PACKET && !capable(CAP_NET_RAW))
return -EPERM;
@@ -1761,6 +1788,32 @@ static int create_qp(struct ib_uverbs_file *file,
init_uobj(&obj->uevent.uobject, cmd->user_handle, file->ucontext,
&qp_lock_class);
down_write(&obj->uevent.uobject.mutex);
+ if (cmd_sz >= offsetof(typeof(*cmd), rwq_ind_tbl_handle) +
+ sizeof(cmd->rwq_ind_tbl_handle) &&
+ (cmd->comp_mask & IB_UVERBS_CREATE_QP_MASK_IND_TABLE)) {
+ ind_tbl = idr_read_rwq_indirection_table(cmd->rwq_ind_tbl_handle,
+ file->ucontext);
+ if (!ind_tbl) {
+ ret = -EINVAL;
+ goto err_put;
+ }
+
+ attr.rwq_ind_tbl = ind_tbl;
+ }
+
+ if ((cmd_sz >= offsetof(typeof(*cmd), reserved1) +
+ sizeof(cmd->reserved1)) && cmd->reserved1) {
+ ret = -EOPNOTSUPP;
+ goto err_put;
+ }
+
+ if (ind_tbl && (cmd->max_recv_wr || cmd->max_recv_sge || cmd->is_srq)) {
+ ret = -EINVAL;
+ goto err_put;
+ }
+
+ if (ind_tbl && !cmd->max_send_wr)
+ has_sq = false;
if (cmd->qp_type == IB_QPT_XRC_TGT) {
xrcd = idr_read_xrcd(cmd->pd_handle, file->ucontext,
@@ -1784,20 +1837,24 @@ static int create_qp(struct ib_uverbs_file *file,
}
}
- if (cmd->recv_cq_handle != cmd->send_cq_handle) {
- rcq = idr_read_cq(cmd->recv_cq_handle,
- file->ucontext, 0);
- if (!rcq) {
- ret = -EINVAL;
- goto err_put;
+ if (!ind_tbl) {
+ if (cmd->recv_cq_handle != cmd->send_cq_handle) {
+ rcq = idr_read_cq(cmd->recv_cq_handle,
+ file->ucontext, 0);
+ if (!rcq) {
+ ret = -EINVAL;
+ goto err_put;
+ }
}
}
}
- scq = idr_read_cq(cmd->send_cq_handle, file->ucontext, !!rcq);
- rcq = rcq ?: scq;
+ if (has_sq)
+ scq = idr_read_cq(cmd->send_cq_handle, file->ucontext, !!rcq);
+ if (!ind_tbl)
+ rcq = rcq ?: scq;
pd = idr_read_pd(cmd->pd_handle, file->ucontext);
- if (!pd || !scq) {
+ if (!pd || (!scq && has_sq)) {
ret = -EINVAL;
goto err_put;
}
@@ -1864,16 +1921,20 @@ static int create_qp(struct ib_uverbs_file *file,
qp->send_cq = attr.send_cq;
qp->recv_cq = attr.recv_cq;
qp->srq = attr.srq;
+ qp->rwq_ind_tbl = ind_tbl;
qp->event_handler = attr.event_handler;
qp->qp_context = attr.qp_context;
qp->qp_type = attr.qp_type;
atomic_set(&qp->usecnt, 0);
atomic_inc(&pd->usecnt);
- atomic_inc(&attr.send_cq->usecnt);
+ if (attr.send_cq)
+ atomic_inc(&attr.send_cq->usecnt);
if (attr.recv_cq)
atomic_inc(&attr.recv_cq->usecnt);
if (attr.srq)
atomic_inc(&attr.srq->usecnt);
+ if (ind_tbl)
+ atomic_inc(&ind_tbl->usecnt);
}
qp->uobject = &obj->uevent.uobject;
@@ -1913,6 +1974,8 @@ static int create_qp(struct ib_uverbs_file *file,
put_cq_read(rcq);
if (srq)
put_srq_read(srq);
+ if (ind_tbl)
+ put_rwq_indirection_table_read(ind_tbl);
mutex_lock(&file->mutex);
list_add_tail(&obj->uevent.uobject.list, &file->ucontext->qp_list);
@@ -1940,6 +2003,8 @@ err_put:
put_cq_read(rcq);
if (srq)
put_srq_read(srq);
+ if (ind_tbl)
+ put_rwq_indirection_table_read(ind_tbl);
put_uobj_write(&obj->uevent.uobject);
return ret;
@@ -2033,7 +2098,7 @@ int ib_uverbs_ex_create_qp(struct ib_uverbs_file *file,
if (err)
return err;
- if (cmd.comp_mask)
+ if (cmd.comp_mask & ~IB_UVERBS_CREATE_QP_SUP_COMP_MASK)
return -EINVAL;
if (cmd.reserved)
@@ -3040,6 +3105,15 @@ static int kern_spec_to_ib_spec(struct ib_uverbs_flow_spec *kern_spec,
memcpy(&ib_spec->ipv4.mask, &kern_spec->ipv4.mask,
sizeof(struct ib_flow_ipv4_filter));
break;
+ case IB_FLOW_SPEC_IPV6:
+ ib_spec->ipv6.size = sizeof(struct ib_flow_spec_ipv6);
+ if (ib_spec->ipv6.size != kern_spec->ipv6.size)
+ return -EINVAL;
+ memcpy(&ib_spec->ipv6.val, &kern_spec->ipv6.val,
+ sizeof(struct ib_flow_ipv6_filter));
+ memcpy(&ib_spec->ipv6.mask, &kern_spec->ipv6.mask,
+ sizeof(struct ib_flow_ipv6_filter));
+ break;
case IB_FLOW_SPEC_TCP:
case IB_FLOW_SPEC_UDP:
ib_spec->tcp_udp.size = sizeof(struct ib_flow_spec_tcp_udp);
@@ -3056,6 +3130,445 @@ static int kern_spec_to_ib_spec(struct ib_uverbs_flow_spec *kern_spec,
return 0;
}
+int ib_uverbs_ex_create_wq(struct ib_uverbs_file *file,
+ struct ib_device *ib_dev,
+ struct ib_udata *ucore,
+ struct ib_udata *uhw)
+{
+ struct ib_uverbs_ex_create_wq cmd = {};
+ struct ib_uverbs_ex_create_wq_resp resp = {};
+ struct ib_uwq_object *obj;
+ int err = 0;
+ struct ib_cq *cq;
+ struct ib_pd *pd;
+ struct ib_wq *wq;
+ struct ib_wq_init_attr wq_init_attr = {};
+ size_t required_cmd_sz;
+ size_t required_resp_len;
+
+ required_cmd_sz = offsetof(typeof(cmd), max_sge) + sizeof(cmd.max_sge);
+ required_resp_len = offsetof(typeof(resp), wqn) + sizeof(resp.wqn);
+
+ if (ucore->inlen < required_cmd_sz)
+ return -EINVAL;
+
+ if (ucore->outlen < required_resp_len)
+ return -ENOSPC;
+
+ if (ucore->inlen > sizeof(cmd) &&
+ !ib_is_udata_cleared(ucore, sizeof(cmd),
+ ucore->inlen - sizeof(cmd)))
+ return -EOPNOTSUPP;
+
+ err = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen));
+ if (err)
+ return err;
+
+ if (cmd.comp_mask)
+ return -EOPNOTSUPP;
+
+ obj = kmalloc(sizeof(*obj), GFP_KERNEL);
+ if (!obj)
+ return -ENOMEM;
+
+ init_uobj(&obj->uevent.uobject, cmd.user_handle, file->ucontext,
+ &wq_lock_class);
+ down_write(&obj->uevent.uobject.mutex);
+ pd = idr_read_pd(cmd.pd_handle, file->ucontext);
+ if (!pd) {
+ err = -EINVAL;
+ goto err_uobj;
+ }
+
+ cq = idr_read_cq(cmd.cq_handle, file->ucontext, 0);
+ if (!cq) {
+ err = -EINVAL;
+ goto err_put_pd;
+ }
+
+ wq_init_attr.cq = cq;
+ wq_init_attr.max_sge = cmd.max_sge;
+ wq_init_attr.max_wr = cmd.max_wr;
+ wq_init_attr.wq_context = file;
+ wq_init_attr.wq_type = cmd.wq_type;
+ wq_init_attr.event_handler = ib_uverbs_wq_event_handler;
+ obj->uevent.events_reported = 0;
+ INIT_LIST_HEAD(&obj->uevent.event_list);
+ wq = pd->device->create_wq(pd, &wq_init_attr, uhw);
+ if (IS_ERR(wq)) {
+ err = PTR_ERR(wq);
+ goto err_put_cq;
+ }
+
+ wq->uobject = &obj->uevent.uobject;
+ obj->uevent.uobject.object = wq;
+ wq->wq_type = wq_init_attr.wq_type;
+ wq->cq = cq;
+ wq->pd = pd;
+ wq->device = pd->device;
+ wq->wq_context = wq_init_attr.wq_context;
+ atomic_set(&wq->usecnt, 0);
+ atomic_inc(&pd->usecnt);
+ atomic_inc(&cq->usecnt);
+ wq->uobject = &obj->uevent.uobject;
+ obj->uevent.uobject.object = wq;
+ err = idr_add_uobj(&ib_uverbs_wq_idr, &obj->uevent.uobject);
+ if (err)
+ goto destroy_wq;
+
+ memset(&resp, 0, sizeof(resp));
+ resp.wq_handle = obj->uevent.uobject.id;
+ resp.max_sge = wq_init_attr.max_sge;
+ resp.max_wr = wq_init_attr.max_wr;
+ resp.wqn = wq->wq_num;
+ resp.response_length = required_resp_len;
+ err = ib_copy_to_udata(ucore,
+ &resp, resp.response_length);
+ if (err)
+ goto err_copy;
+
+ put_pd_read(pd);
+ put_cq_read(cq);
+
+ mutex_lock(&file->mutex);
+ list_add_tail(&obj->uevent.uobject.list, &file->ucontext->wq_list);
+ mutex_unlock(&file->mutex);
+
+ obj->uevent.uobject.live = 1;
+ up_write(&obj->uevent.uobject.mutex);
+ return 0;
+
+err_copy:
+ idr_remove_uobj(&ib_uverbs_wq_idr, &obj->uevent.uobject);
+destroy_wq:
+ ib_destroy_wq(wq);
+err_put_cq:
+ put_cq_read(cq);
+err_put_pd:
+ put_pd_read(pd);
+err_uobj:
+ put_uobj_write(&obj->uevent.uobject);
+
+ return err;
+}
+
+int ib_uverbs_ex_destroy_wq(struct ib_uverbs_file *file,
+ struct ib_device *ib_dev,
+ struct ib_udata *ucore,
+ struct ib_udata *uhw)
+{
+ struct ib_uverbs_ex_destroy_wq cmd = {};
+ struct ib_uverbs_ex_destroy_wq_resp resp = {};
+ struct ib_wq *wq;
+ struct ib_uobject *uobj;
+ struct ib_uwq_object *obj;
+ size_t required_cmd_sz;
+ size_t required_resp_len;
+ int ret;
+
+ required_cmd_sz = offsetof(typeof(cmd), wq_handle) + sizeof(cmd.wq_handle);
+ required_resp_len = offsetof(typeof(resp), reserved) + sizeof(resp.reserved);
+
+ if (ucore->inlen < required_cmd_sz)
+ return -EINVAL;
+
+ if (ucore->outlen < required_resp_len)
+ return -ENOSPC;
+
+ if (ucore->inlen > sizeof(cmd) &&
+ !ib_is_udata_cleared(ucore, sizeof(cmd),
+ ucore->inlen - sizeof(cmd)))
+ return -EOPNOTSUPP;
+
+ ret = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen));
+ if (ret)
+ return ret;
+
+ if (cmd.comp_mask)
+ return -EOPNOTSUPP;
+
+ resp.response_length = required_resp_len;
+ uobj = idr_write_uobj(&ib_uverbs_wq_idr, cmd.wq_handle,
+ file->ucontext);
+ if (!uobj)
+ return -EINVAL;
+
+ wq = uobj->object;
+ obj = container_of(uobj, struct ib_uwq_object, uevent.uobject);
+ ret = ib_destroy_wq(wq);
+ if (!ret)
+ uobj->live = 0;
+
+ put_uobj_write(uobj);
+ if (ret)
+ return ret;
+
+ idr_remove_uobj(&ib_uverbs_wq_idr, uobj);
+
+ mutex_lock(&file->mutex);
+ list_del(&uobj->list);
+ mutex_unlock(&file->mutex);
+
+ ib_uverbs_release_uevent(file, &obj->uevent);
+ resp.events_reported = obj->uevent.events_reported;
+ put_uobj(uobj);
+
+ ret = ib_copy_to_udata(ucore, &resp, resp.response_length);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+int ib_uverbs_ex_modify_wq(struct ib_uverbs_file *file,
+ struct ib_device *ib_dev,
+ struct ib_udata *ucore,
+ struct ib_udata *uhw)
+{
+ struct ib_uverbs_ex_modify_wq cmd = {};
+ struct ib_wq *wq;
+ struct ib_wq_attr wq_attr = {};
+ size_t required_cmd_sz;
+ int ret;
+
+ required_cmd_sz = offsetof(typeof(cmd), curr_wq_state) + sizeof(cmd.curr_wq_state);
+ if (ucore->inlen < required_cmd_sz)
+ return -EINVAL;
+
+ if (ucore->inlen > sizeof(cmd) &&
+ !ib_is_udata_cleared(ucore, sizeof(cmd),
+ ucore->inlen - sizeof(cmd)))
+ return -EOPNOTSUPP;
+
+ ret = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen));
+ if (ret)
+ return ret;
+
+ if (!cmd.attr_mask)
+ return -EINVAL;
+
+ if (cmd.attr_mask > (IB_WQ_STATE | IB_WQ_CUR_STATE))
+ return -EINVAL;
+
+ wq = idr_read_wq(cmd.wq_handle, file->ucontext);
+ if (!wq)
+ return -EINVAL;
+
+ wq_attr.curr_wq_state = cmd.curr_wq_state;
+ wq_attr.wq_state = cmd.wq_state;
+ ret = wq->device->modify_wq(wq, &wq_attr, cmd.attr_mask, uhw);
+ put_wq_read(wq);
+ return ret;
+}
+
+int ib_uverbs_ex_create_rwq_ind_table(struct ib_uverbs_file *file,
+ struct ib_device *ib_dev,
+ struct ib_udata *ucore,
+ struct ib_udata *uhw)
+{
+ struct ib_uverbs_ex_create_rwq_ind_table cmd = {};
+ struct ib_uverbs_ex_create_rwq_ind_table_resp resp = {};
+ struct ib_uobject *uobj;
+ int err = 0;
+ struct ib_rwq_ind_table_init_attr init_attr = {};
+ struct ib_rwq_ind_table *rwq_ind_tbl;
+ struct ib_wq **wqs = NULL;
+ u32 *wqs_handles = NULL;
+ struct ib_wq *wq = NULL;
+ int i, j, num_read_wqs;
+ u32 num_wq_handles;
+ u32 expected_in_size;
+ size_t required_cmd_sz_header;
+ size_t required_resp_len;
+
+ required_cmd_sz_header = offsetof(typeof(cmd), log_ind_tbl_size) + sizeof(cmd.log_ind_tbl_size);
+ required_resp_len = offsetof(typeof(resp), ind_tbl_num) + sizeof(resp.ind_tbl_num);
+
+ if (ucore->inlen < required_cmd_sz_header)
+ return -EINVAL;
+
+ if (ucore->outlen < required_resp_len)
+ return -ENOSPC;
+
+ err = ib_copy_from_udata(&cmd, ucore, required_cmd_sz_header);
+ if (err)
+ return err;
+
+ ucore->inbuf += required_cmd_sz_header;
+ ucore->inlen -= required_cmd_sz_header;
+
+ if (cmd.comp_mask)
+ return -EOPNOTSUPP;
+
+ if (cmd.log_ind_tbl_size > IB_USER_VERBS_MAX_LOG_IND_TBL_SIZE)
+ return -EINVAL;
+
+ num_wq_handles = 1 << cmd.log_ind_tbl_size;
+ expected_in_size = num_wq_handles * sizeof(__u32);
+ if (num_wq_handles == 1)
+ /* input size for wq handles is u64 aligned */
+ expected_in_size += sizeof(__u32);
+
+ if (ucore->inlen < expected_in_size)
+ return -EINVAL;
+
+ if (ucore->inlen > expected_in_size &&
+ !ib_is_udata_cleared(ucore, expected_in_size,
+ ucore->inlen - expected_in_size))
+ return -EOPNOTSUPP;
+
+ wqs_handles = kcalloc(num_wq_handles, sizeof(*wqs_handles),
+ GFP_KERNEL);
+ if (!wqs_handles)
+ return -ENOMEM;
+
+ err = ib_copy_from_udata(wqs_handles, ucore,
+ num_wq_handles * sizeof(__u32));
+ if (err)
+ goto err_free;
+
+ wqs = kcalloc(num_wq_handles, sizeof(*wqs), GFP_KERNEL);
+ if (!wqs) {
+ err = -ENOMEM;
+ goto err_free;
+ }
+
+ for (num_read_wqs = 0; num_read_wqs < num_wq_handles;
+ num_read_wqs++) {
+ wq = idr_read_wq(wqs_handles[num_read_wqs], file->ucontext);
+ if (!wq) {
+ err = -EINVAL;
+ goto put_wqs;
+ }
+
+ wqs[num_read_wqs] = wq;
+ }
+
+ uobj = kmalloc(sizeof(*uobj), GFP_KERNEL);
+ if (!uobj) {
+ err = -ENOMEM;
+ goto put_wqs;
+ }
+
+ init_uobj(uobj, 0, file->ucontext, &rwq_ind_table_lock_class);
+ down_write(&uobj->mutex);
+ init_attr.log_ind_tbl_size = cmd.log_ind_tbl_size;
+ init_attr.ind_tbl = wqs;
+ rwq_ind_tbl = ib_dev->create_rwq_ind_table(ib_dev, &init_attr, uhw);
+
+ if (IS_ERR(rwq_ind_tbl)) {
+ err = PTR_ERR(rwq_ind_tbl);
+ goto err_uobj;
+ }
+
+ rwq_ind_tbl->ind_tbl = wqs;
+ rwq_ind_tbl->log_ind_tbl_size = init_attr.log_ind_tbl_size;
+ rwq_ind_tbl->uobject = uobj;
+ uobj->object = rwq_ind_tbl;
+ rwq_ind_tbl->device = ib_dev;
+ atomic_set(&rwq_ind_tbl->usecnt, 0);
+
+ for (i = 0; i < num_wq_handles; i++)
+ atomic_inc(&wqs[i]->usecnt);
+
+ err = idr_add_uobj(&ib_uverbs_rwq_ind_tbl_idr, uobj);
+ if (err)
+ goto destroy_ind_tbl;
+
+ resp.ind_tbl_handle = uobj->id;
+ resp.ind_tbl_num = rwq_ind_tbl->ind_tbl_num;
+ resp.response_length = required_resp_len;
+
+ err = ib_copy_to_udata(ucore,
+ &resp, resp.response_length);
+ if (err)
+ goto err_copy;
+
+ kfree(wqs_handles);
+
+ for (j = 0; j < num_read_wqs; j++)
+ put_wq_read(wqs[j]);
+
+ mutex_lock(&file->mutex);
+ list_add_tail(&uobj->list, &file->ucontext->rwq_ind_tbl_list);
+ mutex_unlock(&file->mutex);
+
+ uobj->live = 1;
+
+ up_write(&uobj->mutex);
+ return 0;
+
+err_copy:
+ idr_remove_uobj(&ib_uverbs_rwq_ind_tbl_idr, uobj);
+destroy_ind_tbl:
+ ib_destroy_rwq_ind_table(rwq_ind_tbl);
+err_uobj:
+ put_uobj_write(uobj);
+put_wqs:
+ for (j = 0; j < num_read_wqs; j++)
+ put_wq_read(wqs[j]);
+err_free:
+ kfree(wqs_handles);
+ kfree(wqs);
+ return err;
+}
+
+int ib_uverbs_ex_destroy_rwq_ind_table(struct ib_uverbs_file *file,
+ struct ib_device *ib_dev,
+ struct ib_udata *ucore,
+ struct ib_udata *uhw)
+{
+ struct ib_uverbs_ex_destroy_rwq_ind_table cmd = {};
+ struct ib_rwq_ind_table *rwq_ind_tbl;
+ struct ib_uobject *uobj;
+ int ret;
+ struct ib_wq **ind_tbl;
+ size_t required_cmd_sz;
+
+ required_cmd_sz = offsetof(typeof(cmd), ind_tbl_handle) + sizeof(cmd.ind_tbl_handle);
+
+ if (ucore->inlen < required_cmd_sz)
+ return -EINVAL;
+
+ if (ucore->inlen > sizeof(cmd) &&
+ !ib_is_udata_cleared(ucore, sizeof(cmd),
+ ucore->inlen - sizeof(cmd)))
+ return -EOPNOTSUPP;
+
+ ret = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen));
+ if (ret)
+ return ret;
+
+ if (cmd.comp_mask)
+ return -EOPNOTSUPP;
+
+ uobj = idr_write_uobj(&ib_uverbs_rwq_ind_tbl_idr, cmd.ind_tbl_handle,
+ file->ucontext);
+ if (!uobj)
+ return -EINVAL;
+ rwq_ind_tbl = uobj->object;
+ ind_tbl = rwq_ind_tbl->ind_tbl;
+
+ ret = ib_destroy_rwq_ind_table(rwq_ind_tbl);
+ if (!ret)
+ uobj->live = 0;
+
+ put_uobj_write(uobj);
+
+ if (ret)
+ return ret;
+
+ idr_remove_uobj(&ib_uverbs_rwq_ind_tbl_idr, uobj);
+
+ mutex_lock(&file->mutex);
+ list_del(&uobj->list);
+ mutex_unlock(&file->mutex);
+
+ put_uobj(uobj);
+ kfree(ind_tbl);
+ return ret;
+}
+
int ib_uverbs_ex_create_flow(struct ib_uverbs_file *file,
struct ib_device *ib_dev,
struct ib_udata *ucore,
diff --git a/drivers/infiniband/core/uverbs_main.c b/drivers/infiniband/core/uverbs_main.c
index 31f422a70623..0012fa58c105 100644
--- a/drivers/infiniband/core/uverbs_main.c
+++ b/drivers/infiniband/core/uverbs_main.c
@@ -76,6 +76,8 @@ DEFINE_IDR(ib_uverbs_qp_idr);
DEFINE_IDR(ib_uverbs_srq_idr);
DEFINE_IDR(ib_uverbs_xrcd_idr);
DEFINE_IDR(ib_uverbs_rule_idr);
+DEFINE_IDR(ib_uverbs_wq_idr);
+DEFINE_IDR(ib_uverbs_rwq_ind_tbl_idr);
static DEFINE_SPINLOCK(map_lock);
static DECLARE_BITMAP(dev_map, IB_UVERBS_MAX_DEVICES);
@@ -130,6 +132,11 @@ static int (*uverbs_ex_cmd_table[])(struct ib_uverbs_file *file,
[IB_USER_VERBS_EX_CMD_QUERY_DEVICE] = ib_uverbs_ex_query_device,
[IB_USER_VERBS_EX_CMD_CREATE_CQ] = ib_uverbs_ex_create_cq,
[IB_USER_VERBS_EX_CMD_CREATE_QP] = ib_uverbs_ex_create_qp,
+ [IB_USER_VERBS_EX_CMD_CREATE_WQ] = ib_uverbs_ex_create_wq,
+ [IB_USER_VERBS_EX_CMD_MODIFY_WQ] = ib_uverbs_ex_modify_wq,
+ [IB_USER_VERBS_EX_CMD_DESTROY_WQ] = ib_uverbs_ex_destroy_wq,
+ [IB_USER_VERBS_EX_CMD_CREATE_RWQ_IND_TBL] = ib_uverbs_ex_create_rwq_ind_table,
+ [IB_USER_VERBS_EX_CMD_DESTROY_RWQ_IND_TBL] = ib_uverbs_ex_destroy_rwq_ind_table,
};
static void ib_uverbs_add_one(struct ib_device *device);
@@ -265,6 +272,27 @@ static int ib_uverbs_cleanup_ucontext(struct ib_uverbs_file *file,
kfree(uqp);
}
+ list_for_each_entry_safe(uobj, tmp, &context->rwq_ind_tbl_list, list) {
+ struct ib_rwq_ind_table *rwq_ind_tbl = uobj->object;
+ struct ib_wq **ind_tbl = rwq_ind_tbl->ind_tbl;
+
+ idr_remove_uobj(&ib_uverbs_rwq_ind_tbl_idr, uobj);
+ ib_destroy_rwq_ind_table(rwq_ind_tbl);
+ kfree(ind_tbl);
+ kfree(uobj);
+ }
+
+ list_for_each_entry_safe(uobj, tmp, &context->wq_list, list) {
+ struct ib_wq *wq = uobj->object;
+ struct ib_uwq_object *uwq =
+ container_of(uobj, struct ib_uwq_object, uevent.uobject);
+
+ idr_remove_uobj(&ib_uverbs_wq_idr, uobj);
+ ib_destroy_wq(wq);
+ ib_uverbs_release_uevent(file, &uwq->uevent);
+ kfree(uwq);
+ }
+
list_for_each_entry_safe(uobj, tmp, &context->srq_list, list) {
struct ib_srq *srq = uobj->object;
struct ib_uevent_object *uevent =
@@ -568,6 +596,16 @@ void ib_uverbs_qp_event_handler(struct ib_event *event, void *context_ptr)
&uobj->events_reported);
}
+void ib_uverbs_wq_event_handler(struct ib_event *event, void *context_ptr)
+{
+ struct ib_uevent_object *uobj = container_of(event->element.wq->uobject,
+ struct ib_uevent_object, uobject);
+
+ ib_uverbs_async_handler(context_ptr, uobj->uobject.user_handle,
+ event->event, &uobj->event_list,
+ &uobj->events_reported);
+}
+
void ib_uverbs_srq_event_handler(struct ib_event *event, void *context_ptr)
{
struct ib_uevent_object *uobj;
@@ -931,6 +969,7 @@ static int ib_uverbs_open(struct inode *inode, struct file *filp)
file->async_file = NULL;
kref_init(&file->ref);
mutex_init(&file->mutex);
+ mutex_init(&file->cleanup_mutex);
filp->private_data = file;
kobject_get(&dev->kobj);
@@ -956,18 +995,20 @@ static int ib_uverbs_close(struct inode *inode, struct file *filp)
{
struct ib_uverbs_file *file = filp->private_data;
struct ib_uverbs_device *dev = file->device;
- struct ib_ucontext *ucontext = NULL;
+
+ mutex_lock(&file->cleanup_mutex);
+ if (file->ucontext) {
+ ib_uverbs_cleanup_ucontext(file, file->ucontext);
+ file->ucontext = NULL;
+ }
+ mutex_unlock(&file->cleanup_mutex);
mutex_lock(&file->device->lists_mutex);
- ucontext = file->ucontext;
- file->ucontext = NULL;
if (!file->is_closed) {
list_del(&file->list);
file->is_closed = 1;
}
mutex_unlock(&file->device->lists_mutex);
- if (ucontext)
- ib_uverbs_cleanup_ucontext(file, ucontext);
if (file->async_file)
kref_put(&file->async_file->ref, ib_uverbs_release_event_file);
@@ -1181,22 +1222,30 @@ static void ib_uverbs_free_hw_resources(struct ib_uverbs_device *uverbs_dev,
mutex_lock(&uverbs_dev->lists_mutex);
while (!list_empty(&uverbs_dev->uverbs_file_list)) {
struct ib_ucontext *ucontext;
-
file = list_first_entry(&uverbs_dev->uverbs_file_list,
struct ib_uverbs_file, list);
file->is_closed = 1;
- ucontext = file->ucontext;
list_del(&file->list);
- file->ucontext = NULL;
kref_get(&file->ref);
mutex_unlock(&uverbs_dev->lists_mutex);
- /* We must release the mutex before going ahead and calling
- * disassociate_ucontext. disassociate_ucontext might end up
- * indirectly calling uverbs_close, for example due to freeing
- * the resources (e.g mmput).
- */
+
ib_uverbs_event_handler(&file->event_handler, &event);
+
+ mutex_lock(&file->cleanup_mutex);
+ ucontext = file->ucontext;
+ file->ucontext = NULL;
+ mutex_unlock(&file->cleanup_mutex);
+
+ /* At this point ib_uverbs_close cannot be running
+ * ib_uverbs_cleanup_ucontext
+ */
if (ucontext) {
+ /* We must release the mutex before going ahead and
+ * calling disassociate_ucontext. disassociate_ucontext
+ * might end up indirectly calling uverbs_close,
+ * for example due to freeing the resources
+ * (e.g mmput).
+ */
ib_dev->disassociate_ucontext(ucontext);
ib_uverbs_cleanup_ucontext(file, ucontext);
}
diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c
index 6298f54b4137..f2b776efab3a 100644
--- a/drivers/infiniband/core/verbs.c
+++ b/drivers/infiniband/core/verbs.c
@@ -758,6 +758,12 @@ struct ib_qp *ib_create_qp(struct ib_pd *pd,
struct ib_qp *qp;
int ret;
+ if (qp_init_attr->rwq_ind_tbl &&
+ (qp_init_attr->recv_cq ||
+ qp_init_attr->srq || qp_init_attr->cap.max_recv_wr ||
+ qp_init_attr->cap.max_recv_sge))
+ return ERR_PTR(-EINVAL);
+
/*
* If the callers is using the RDMA API calculate the resources
* needed for the RDMA READ/WRITE operations.
@@ -775,6 +781,7 @@ struct ib_qp *ib_create_qp(struct ib_pd *pd,
qp->real_qp = qp;
qp->uobject = NULL;
qp->qp_type = qp_init_attr->qp_type;
+ qp->rwq_ind_tbl = qp_init_attr->rwq_ind_tbl;
atomic_set(&qp->usecnt, 0);
qp->mrs_used = 0;
@@ -792,7 +799,8 @@ struct ib_qp *ib_create_qp(struct ib_pd *pd,
qp->srq = NULL;
} else {
qp->recv_cq = qp_init_attr->recv_cq;
- atomic_inc(&qp_init_attr->recv_cq->usecnt);
+ if (qp_init_attr->recv_cq)
+ atomic_inc(&qp_init_attr->recv_cq->usecnt);
qp->srq = qp_init_attr->srq;
if (qp->srq)
atomic_inc(&qp_init_attr->srq->usecnt);
@@ -803,7 +811,10 @@ struct ib_qp *ib_create_qp(struct ib_pd *pd,
qp->xrcd = NULL;
atomic_inc(&pd->usecnt);
- atomic_inc(&qp_init_attr->send_cq->usecnt);
+ if (qp_init_attr->send_cq)
+ atomic_inc(&qp_init_attr->send_cq->usecnt);
+ if (qp_init_attr->rwq_ind_tbl)
+ atomic_inc(&qp->rwq_ind_tbl->usecnt);
if (qp_init_attr->cap.max_rdma_ctxs) {
ret = rdma_rw_init_mrs(qp, qp_init_attr);
@@ -814,6 +825,15 @@ struct ib_qp *ib_create_qp(struct ib_pd *pd,
}
}
+ /*
+ * Note: all hw drivers guarantee that max_send_sge is lower than
+ * the device RDMA WRITE SGE limit but not all hw drivers ensure that
+ * max_send_sge <= max_sge_rd.
+ */
+ qp->max_write_sge = qp_init_attr->cap.max_send_sge;
+ qp->max_read_sge = min_t(u32, qp_init_attr->cap.max_send_sge,
+ device->attrs.max_sge_rd);
+
return qp;
}
EXPORT_SYMBOL(ib_create_qp);
@@ -1283,6 +1303,7 @@ int ib_destroy_qp(struct ib_qp *qp)
struct ib_pd *pd;
struct ib_cq *scq, *rcq;
struct ib_srq *srq;
+ struct ib_rwq_ind_table *ind_tbl;
int ret;
WARN_ON_ONCE(qp->mrs_used > 0);
@@ -1297,6 +1318,7 @@ int ib_destroy_qp(struct ib_qp *qp)
scq = qp->send_cq;
rcq = qp->recv_cq;
srq = qp->srq;
+ ind_tbl = qp->rwq_ind_tbl;
if (!qp->uobject)
rdma_rw_cleanup_mrs(qp);
@@ -1311,6 +1333,8 @@ int ib_destroy_qp(struct ib_qp *qp)
atomic_dec(&rcq->usecnt);
if (srq)
atomic_dec(&srq->usecnt);
+ if (ind_tbl)
+ atomic_dec(&ind_tbl->usecnt);
}
return ret;
@@ -1558,6 +1582,150 @@ int ib_dealloc_xrcd(struct ib_xrcd *xrcd)
}
EXPORT_SYMBOL(ib_dealloc_xrcd);
+/**
+ * ib_create_wq - Creates a WQ associated with the specified protection
+ * domain.
+ * @pd: The protection domain associated with the WQ.
+ * @wq_init_attr: A list of initial attributes required to create the
+ * WQ. If WQ creation succeeds, then the attributes are updated to
+ * the actual capabilities of the created WQ.
+ *
+ * wq_init_attr->max_wr and wq_init_attr->max_sge determine
+ * the requested size of the WQ, and set to the actual values allocated
+ * on return.
+ * If ib_create_wq() succeeds, then max_wr and max_sge will always be
+ * at least as large as the requested values.
+ */
+struct ib_wq *ib_create_wq(struct ib_pd *pd,
+ struct ib_wq_init_attr *wq_attr)
+{
+ struct ib_wq *wq;
+
+ if (!pd->device->create_wq)
+ return ERR_PTR(-ENOSYS);
+
+ wq = pd->device->create_wq(pd, wq_attr, NULL);
+ if (!IS_ERR(wq)) {
+ wq->event_handler = wq_attr->event_handler;
+ wq->wq_context = wq_attr->wq_context;
+ wq->wq_type = wq_attr->wq_type;
+ wq->cq = wq_attr->cq;
+ wq->device = pd->device;
+ wq->pd = pd;
+ wq->uobject = NULL;
+ atomic_inc(&pd->usecnt);
+ atomic_inc(&wq_attr->cq->usecnt);
+ atomic_set(&wq->usecnt, 0);
+ }
+ return wq;
+}
+EXPORT_SYMBOL(ib_create_wq);
+
+/**
+ * ib_destroy_wq - Destroys the specified WQ.
+ * @wq: The WQ to destroy.
+ */
+int ib_destroy_wq(struct ib_wq *wq)
+{
+ int err;
+ struct ib_cq *cq = wq->cq;
+ struct ib_pd *pd = wq->pd;
+
+ if (atomic_read(&wq->usecnt))
+ return -EBUSY;
+
+ err = wq->device->destroy_wq(wq);
+ if (!err) {
+ atomic_dec(&pd->usecnt);
+ atomic_dec(&cq->usecnt);
+ }
+ return err;
+}
+EXPORT_SYMBOL(ib_destroy_wq);
+
+/**
+ * ib_modify_wq - Modifies the specified WQ.
+ * @wq: The WQ to modify.
+ * @wq_attr: On input, specifies the WQ attributes to modify.
+ * @wq_attr_mask: A bit-mask used to specify which attributes of the WQ
+ * are being modified.
+ * On output, the current values of selected WQ attributes are returned.
+ */
+int ib_modify_wq(struct ib_wq *wq, struct ib_wq_attr *wq_attr,
+ u32 wq_attr_mask)
+{
+ int err;
+
+ if (!wq->device->modify_wq)
+ return -ENOSYS;
+
+ err = wq->device->modify_wq(wq, wq_attr, wq_attr_mask, NULL);
+ return err;
+}
+EXPORT_SYMBOL(ib_modify_wq);
+
+/*
+ * ib_create_rwq_ind_table - Creates a RQ Indirection Table.
+ * @device: The device on which to create the rwq indirection table.
+ * @ib_rwq_ind_table_init_attr: A list of initial attributes required to
+ * create the Indirection Table.
+ *
+ * Note: The life time of ib_rwq_ind_table_init_attr->ind_tbl is not less
+ * than the created ib_rwq_ind_table object and the caller is responsible
+ * for its memory allocation/free.
+ */
+struct ib_rwq_ind_table *ib_create_rwq_ind_table(struct ib_device *device,
+ struct ib_rwq_ind_table_init_attr *init_attr)
+{
+ struct ib_rwq_ind_table *rwq_ind_table;
+ int i;
+ u32 table_size;
+
+ if (!device->create_rwq_ind_table)
+ return ERR_PTR(-ENOSYS);
+
+ table_size = (1 << init_attr->log_ind_tbl_size);
+ rwq_ind_table = device->create_rwq_ind_table(device,
+ init_attr, NULL);
+ if (IS_ERR(rwq_ind_table))
+ return rwq_ind_table;
+
+ rwq_ind_table->ind_tbl = init_attr->ind_tbl;
+ rwq_ind_table->log_ind_tbl_size = init_attr->log_ind_tbl_size;
+ rwq_ind_table->device = device;
+ rwq_ind_table->uobject = NULL;
+ atomic_set(&rwq_ind_table->usecnt, 0);
+
+ for (i = 0; i < table_size; i++)
+ atomic_inc(&rwq_ind_table->ind_tbl[i]->usecnt);
+
+ return rwq_ind_table;
+}
+EXPORT_SYMBOL(ib_create_rwq_ind_table);
+
+/*
+ * ib_destroy_rwq_ind_table - Destroys the specified Indirection Table.
+ * @wq_ind_table: The Indirection Table to destroy.
+*/
+int ib_destroy_rwq_ind_table(struct ib_rwq_ind_table *rwq_ind_table)
+{
+ int err, i;
+ u32 table_size = (1 << rwq_ind_table->log_ind_tbl_size);
+ struct ib_wq **ind_tbl = rwq_ind_table->ind_tbl;
+
+ if (atomic_read(&rwq_ind_table->usecnt))
+ return -EBUSY;
+
+ err = rwq_ind_table->device->destroy_rwq_ind_table(rwq_ind_table);
+ if (!err) {
+ for (i = 0; i < table_size; i++)
+ atomic_dec(&ind_tbl[i]->usecnt);
+ }
+
+ return err;
+}
+EXPORT_SYMBOL(ib_destroy_rwq_ind_table);
+
struct ib_flow *ib_create_flow(struct ib_qp *qp,
struct ib_flow_attr *flow_attr,
int domain)
diff --git a/drivers/infiniband/hw/cxgb3/iwch_cm.c b/drivers/infiniband/hw/cxgb3/iwch_cm.c
index 3e8431b5cad7..04bbf172abde 100644
--- a/drivers/infiniband/hw/cxgb3/iwch_cm.c
+++ b/drivers/infiniband/hw/cxgb3/iwch_cm.c
@@ -1396,10 +1396,10 @@ static int pass_accept_req(struct t3cdev *tdev, struct sk_buff *skb, void *ctx)
state_set(&child_ep->com, CONNECTING);
child_ep->com.tdev = tdev;
child_ep->com.cm_id = NULL;
- child_ep->com.local_addr.sin_family = PF_INET;
+ child_ep->com.local_addr.sin_family = AF_INET;
child_ep->com.local_addr.sin_port = req->local_port;
child_ep->com.local_addr.sin_addr.s_addr = req->local_ip;
- child_ep->com.remote_addr.sin_family = PF_INET;
+ child_ep->com.remote_addr.sin_family = AF_INET;
child_ep->com.remote_addr.sin_port = req->peer_port;
child_ep->com.remote_addr.sin_addr.s_addr = req->peer_ip;
get_ep(&parent_ep->com);
diff --git a/drivers/infiniband/hw/cxgb3/iwch_provider.c b/drivers/infiniband/hw/cxgb3/iwch_provider.c
index bb1a839d4d6d..3edb80644b53 100644
--- a/drivers/infiniband/hw/cxgb3/iwch_provider.c
+++ b/drivers/infiniband/hw/cxgb3/iwch_provider.c
@@ -1183,18 +1183,6 @@ static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
return sprintf(buf, "%d\n", iwch_dev->rdev.t3cdev_p->type);
}
-static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr, char *buf)
-{
- struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
- ibdev.dev);
- struct ethtool_drvinfo info;
- struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
-
- PDBG("%s dev 0x%p\n", __func__, dev);
- lldev->ethtool_ops->get_drvinfo(lldev, &info);
- return sprintf(buf, "%s\n", info.fw_version);
-}
-
static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
char *buf)
{
@@ -1334,13 +1322,11 @@ static int iwch_get_mib(struct ib_device *ibdev, struct rdma_hw_stats *stats,
}
static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
-static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
static struct device_attribute *iwch_class_attributes[] = {
&dev_attr_hw_rev,
- &dev_attr_fw_ver,
&dev_attr_hca_type,
&dev_attr_board_id,
};
@@ -1362,6 +1348,18 @@ static int iwch_port_immutable(struct ib_device *ibdev, u8 port_num,
return 0;
}
+static void get_dev_fw_ver_str(struct ib_device *ibdev, char *str,
+ size_t str_len)
+{
+ struct iwch_dev *iwch_dev = to_iwch_dev(ibdev);
+ struct ethtool_drvinfo info;
+ struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
+
+ PDBG("%s dev 0x%p\n", __func__, iwch_dev);
+ lldev->ethtool_ops->get_drvinfo(lldev, &info);
+ snprintf(str, str_len, "%s", info.fw_version);
+}
+
int iwch_register_device(struct iwch_dev *dev)
{
int ret;
@@ -1437,6 +1435,7 @@ int iwch_register_device(struct iwch_dev *dev)
dev->ibdev.get_hw_stats = iwch_get_mib;
dev->ibdev.uverbs_abi_ver = IWCH_UVERBS_ABI_VERSION;
dev->ibdev.get_port_immutable = iwch_port_immutable;
+ dev->ibdev.get_dev_fw_str = get_dev_fw_ver_str;
dev->ibdev.iwcm = kmalloc(sizeof(struct iw_cm_verbs), GFP_KERNEL);
if (!dev->ibdev.iwcm)
diff --git a/drivers/infiniband/hw/cxgb4/cm.c b/drivers/infiniband/hw/cxgb4/cm.c
index a3a67216bce6..3aca7f6171b4 100644
--- a/drivers/infiniband/hw/cxgb4/cm.c
+++ b/drivers/infiniband/hw/cxgb4/cm.c
@@ -294,6 +294,25 @@ static void state_set(struct c4iw_ep_common *epc, enum c4iw_ep_state new)
return;
}
+static int alloc_ep_skb_list(struct sk_buff_head *ep_skb_list, int size)
+{
+ struct sk_buff *skb;
+ unsigned int i;
+ size_t len;
+
+ len = roundup(sizeof(union cpl_wr_size), 16);
+ for (i = 0; i < size; i++) {
+ skb = alloc_skb(len, GFP_KERNEL);
+ if (!skb)
+ goto fail;
+ skb_queue_tail(ep_skb_list, skb);
+ }
+ return 0;
+fail:
+ skb_queue_purge(ep_skb_list);
+ return -ENOMEM;
+}
+
static void *alloc_ep(int size, gfp_t gfp)
{
struct c4iw_ep_common *epc;
@@ -384,6 +403,8 @@ void _c4iw_free_ep(struct kref *kref)
if (ep->mpa_skb)
kfree_skb(ep->mpa_skb);
}
+ if (!skb_queue_empty(&ep->com.ep_skb_list))
+ skb_queue_purge(&ep->com.ep_skb_list);
kfree(ep);
}
@@ -620,25 +641,27 @@ static void abort_arp_failure(void *handle, struct sk_buff *skb)
}
}
-static int send_flowc(struct c4iw_ep *ep, struct sk_buff *skb)
+static int send_flowc(struct c4iw_ep *ep)
{
- unsigned int flowclen = 80;
struct fw_flowc_wr *flowc;
+ struct sk_buff *skb = skb_dequeue(&ep->com.ep_skb_list);
int i;
u16 vlan = ep->l2t->vlan;
int nparams;
+ if (WARN_ON(!skb))
+ return -ENOMEM;
+
if (vlan == CPL_L2T_VLAN_NONE)
nparams = 8;
else
nparams = 9;
- skb = get_skb(skb, flowclen, GFP_KERNEL);
- flowc = (struct fw_flowc_wr *)__skb_put(skb, flowclen);
+ flowc = (struct fw_flowc_wr *)__skb_put(skb, FLOWC_LEN);
flowc->op_to_nparams = cpu_to_be32(FW_WR_OP_V(FW_FLOWC_WR) |
FW_FLOWC_WR_NPARAMS_V(nparams));
- flowc->flowid_len16 = cpu_to_be32(FW_WR_LEN16_V(DIV_ROUND_UP(flowclen,
+ flowc->flowid_len16 = cpu_to_be32(FW_WR_LEN16_V(DIV_ROUND_UP(FLOWC_LEN,
16)) | FW_WR_FLOWID_V(ep->hwtid));
flowc->mnemval[0].mnemonic = FW_FLOWC_MNEM_PFNVFN;
@@ -679,18 +702,16 @@ static int send_flowc(struct c4iw_ep *ep, struct sk_buff *skb)
return c4iw_ofld_send(&ep->com.dev->rdev, skb);
}
-static int send_halfclose(struct c4iw_ep *ep, gfp_t gfp)
+static int send_halfclose(struct c4iw_ep *ep)
{
struct cpl_close_con_req *req;
- struct sk_buff *skb;
+ struct sk_buff *skb = skb_dequeue(&ep->com.ep_skb_list);
int wrlen = roundup(sizeof *req, 16);
PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
- skb = get_skb(NULL, wrlen, gfp);
- if (!skb) {
- printk(KERN_ERR MOD "%s - failed to alloc skb\n", __func__);
+ if (WARN_ON(!skb))
return -ENOMEM;
- }
+
set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx);
t4_set_arp_err_handler(skb, NULL, arp_failure_discard);
req = (struct cpl_close_con_req *) skb_put(skb, wrlen);
@@ -701,26 +722,24 @@ static int send_halfclose(struct c4iw_ep *ep, gfp_t gfp)
return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
}
-static int send_abort(struct c4iw_ep *ep, struct sk_buff *skb, gfp_t gfp)
+static int send_abort(struct c4iw_ep *ep)
{
struct cpl_abort_req *req;
int wrlen = roundup(sizeof *req, 16);
+ struct sk_buff *req_skb = skb_dequeue(&ep->com.ep_skb_list);
PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
- skb = get_skb(skb, wrlen, gfp);
- if (!skb) {
- printk(KERN_ERR MOD "%s - failed to alloc skb.\n",
- __func__);
+ if (WARN_ON(!req_skb))
return -ENOMEM;
- }
- set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx);
- t4_set_arp_err_handler(skb, ep, abort_arp_failure);
- req = (struct cpl_abort_req *) skb_put(skb, wrlen);
+
+ set_wr_txq(req_skb, CPL_PRIORITY_DATA, ep->txq_idx);
+ t4_set_arp_err_handler(req_skb, ep, abort_arp_failure);
+ req = (struct cpl_abort_req *)skb_put(req_skb, wrlen);
memset(req, 0, wrlen);
INIT_TP_WR(req, ep->hwtid);
OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ABORT_REQ, ep->hwtid));
req->cmd = CPL_ABORT_SEND_RST;
- return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
+ return c4iw_l2t_send(&ep->com.dev->rdev, req_skb, ep->l2t);
}
static void best_mtu(const unsigned short *mtus, unsigned short mtu,
@@ -992,9 +1011,19 @@ static int send_mpa_req(struct c4iw_ep *ep, struct sk_buff *skb,
mpa = (struct mpa_message *)(req + 1);
memcpy(mpa->key, MPA_KEY_REQ, sizeof(mpa->key));
- mpa->flags = (crc_enabled ? MPA_CRC : 0) |
- (markers_enabled ? MPA_MARKERS : 0) |
- (mpa_rev_to_use == 2 ? MPA_ENHANCED_RDMA_CONN : 0);
+
+ mpa->flags = 0;
+ if (crc_enabled)
+ mpa->flags |= MPA_CRC;
+ if (markers_enabled) {
+ mpa->flags |= MPA_MARKERS;
+ ep->mpa_attr.recv_marker_enabled = 1;
+ } else {
+ ep->mpa_attr.recv_marker_enabled = 0;
+ }
+ if (mpa_rev_to_use == 2)
+ mpa->flags |= MPA_ENHANCED_RDMA_CONN;
+
mpa->private_data_size = htons(ep->plen);
mpa->revision = mpa_rev_to_use;
if (mpa_rev_to_use == 1) {
@@ -1169,8 +1198,11 @@ static int send_mpa_reply(struct c4iw_ep *ep, const void *pdata, u8 plen)
mpa = (struct mpa_message *)(req + 1);
memset(mpa, 0, sizeof(*mpa));
memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key));
- mpa->flags = (ep->mpa_attr.crc_enabled ? MPA_CRC : 0) |
- (markers_enabled ? MPA_MARKERS : 0);
+ mpa->flags = 0;
+ if (ep->mpa_attr.crc_enabled)
+ mpa->flags |= MPA_CRC;
+ if (ep->mpa_attr.recv_marker_enabled)
+ mpa->flags |= MPA_MARKERS;
mpa->revision = ep->mpa_attr.version;
mpa->private_data_size = htons(plen);
@@ -1248,7 +1280,7 @@ static int act_establish(struct c4iw_dev *dev, struct sk_buff *skb)
set_bit(ACT_ESTAB, &ep->com.history);
/* start MPA negotiation */
- ret = send_flowc(ep, NULL);
+ ret = send_flowc(ep);
if (ret)
goto err;
if (ep->retry_with_mpa_v1)
@@ -1555,7 +1587,6 @@ static int process_mpa_reply(struct c4iw_ep *ep, struct sk_buff *skb)
*/
__state_set(&ep->com, FPDU_MODE);
ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0;
- ep->mpa_attr.recv_marker_enabled = markers_enabled;
ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0;
ep->mpa_attr.version = mpa->revision;
ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED;
@@ -2004,12 +2035,17 @@ static int send_fw_act_open_req(struct c4iw_ep *ep, unsigned int atid)
}
/*
- * Return whether a failed active open has allocated a TID
+ * Some of the error codes above implicitly indicate that there is no TID
+ * allocated with the result of an ACT_OPEN. We use this predicate to make
+ * that explicit.
*/
static inline int act_open_has_tid(int status)
{
- return status != CPL_ERR_TCAM_FULL && status != CPL_ERR_CONN_EXIST &&
- status != CPL_ERR_ARP_MISS;
+ return (status != CPL_ERR_TCAM_PARITY &&
+ status != CPL_ERR_TCAM_MISS &&
+ status != CPL_ERR_TCAM_FULL &&
+ status != CPL_ERR_CONN_EXIST_SYNRECV &&
+ status != CPL_ERR_CONN_EXIST);
}
/* Returns whether a CPL status conveys negative advice.
@@ -2130,6 +2166,7 @@ out:
static int c4iw_reconnect(struct c4iw_ep *ep)
{
int err = 0;
+ int size = 0;
struct sockaddr_in *laddr = (struct sockaddr_in *)
&ep->com.cm_id->m_local_addr;
struct sockaddr_in *raddr = (struct sockaddr_in *)
@@ -2145,6 +2182,21 @@ static int c4iw_reconnect(struct c4iw_ep *ep)
init_timer(&ep->timer);
c4iw_init_wr_wait(&ep->com.wr_wait);
+ /* When MPA revision is different on nodes, the node with MPA_rev=2
+ * tries to reconnect with MPA_rev 1 for the same EP through
+ * c4iw_reconnect(), where the same EP is assigned with new tid for
+ * further connection establishment. As we are using the same EP pointer
+ * for reconnect, few skbs are used during the previous c4iw_connect(),
+ * which leaves the EP with inadequate skbs for further
+ * c4iw_reconnect(), Further causing an assert BUG_ON() due to empty
+ * skb_list() during peer_abort(). Allocate skbs which is already used.
+ */
+ size = (CN_MAX_CON_BUF - skb_queue_len(&ep->com.ep_skb_list));
+ if (alloc_ep_skb_list(&ep->com.ep_skb_list, size)) {
+ err = -ENOMEM;
+ goto fail1;
+ }
+
/*
* Allocate an active TID to initiate a TCP connection.
*/
@@ -2210,6 +2262,7 @@ fail2:
* response of 1st connect request.
*/
connect_reply_upcall(ep, -ECONNRESET);
+fail1:
c4iw_put_ep(&ep->com);
out:
return err;
@@ -2576,6 +2629,10 @@ static int pass_accept_req(struct c4iw_dev *dev, struct sk_buff *skb)
if (peer_mss && child_ep->mtu > (peer_mss + hdrs))
child_ep->mtu = peer_mss + hdrs;
+ skb_queue_head_init(&child_ep->com.ep_skb_list);
+ if (alloc_ep_skb_list(&child_ep->com.ep_skb_list, CN_MAX_CON_BUF))
+ goto fail;
+
state_set(&child_ep->com, CONNECTING);
child_ep->com.dev = dev;
child_ep->com.cm_id = NULL;
@@ -2640,6 +2697,8 @@ static int pass_accept_req(struct c4iw_dev *dev, struct sk_buff *skb)
(const u32 *)&sin6->sin6_addr.s6_addr, 1);
}
goto out;
+fail:
+ c4iw_put_ep(&child_ep->com);
reject:
reject_cr(dev, hwtid, skb);
if (parent_ep)
@@ -2670,7 +2729,7 @@ static int pass_establish(struct c4iw_dev *dev, struct sk_buff *skb)
ep->com.state = MPA_REQ_WAIT;
start_ep_timer(ep);
set_bit(PASS_ESTAB, &ep->com.history);
- ret = send_flowc(ep, skb);
+ ret = send_flowc(ep);
mutex_unlock(&ep->com.mutex);
if (ret)
c4iw_ep_disconnect(ep, 1, GFP_KERNEL);
@@ -2871,10 +2930,8 @@ static int peer_abort(struct c4iw_dev *dev, struct sk_buff *skb)
}
mutex_unlock(&ep->com.mutex);
- rpl_skb = get_skb(skb, sizeof(*rpl), GFP_KERNEL);
- if (!rpl_skb) {
- printk(KERN_ERR MOD "%s - cannot allocate skb!\n",
- __func__);
+ rpl_skb = skb_dequeue(&ep->com.ep_skb_list);
+ if (WARN_ON(!rpl_skb)) {
release = 1;
goto out;
}
@@ -3011,9 +3068,9 @@ static int fw4_ack(struct c4iw_dev *dev, struct sk_buff *skb)
PDBG("%s last streaming msg ack ep %p tid %u state %u "
"initiator %u freeing skb\n", __func__, ep, ep->hwtid,
state_read(&ep->com), ep->mpa_attr.initiator ? 1 : 0);
+ mutex_lock(&ep->com.mutex);
kfree_skb(ep->mpa_skb);
ep->mpa_skb = NULL;
- mutex_lock(&ep->com.mutex);
if (test_bit(STOP_MPA_TIMER, &ep->com.flags))
stop_ep_timer(ep);
mutex_unlock(&ep->com.mutex);
@@ -3025,9 +3082,9 @@ out:
int c4iw_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len)
{
- int err = 0;
- int disconnect = 0;
+ int abort;
struct c4iw_ep *ep = to_ep(cm_id);
+
PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
mutex_lock(&ep->com.mutex);
@@ -3038,16 +3095,13 @@ int c4iw_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len)
}
set_bit(ULP_REJECT, &ep->com.history);
if (mpa_rev == 0)
- disconnect = 2;
- else {
- err = send_mpa_reject(ep, pdata, pdata_len);
- disconnect = 1;
- }
+ abort = 1;
+ else
+ abort = send_mpa_reject(ep, pdata, pdata_len);
mutex_unlock(&ep->com.mutex);
- if (disconnect) {
- stop_ep_timer(ep);
- err = c4iw_ep_disconnect(ep, disconnect == 2, GFP_KERNEL);
- }
+
+ stop_ep_timer(ep);
+ c4iw_ep_disconnect(ep, abort != 0, GFP_KERNEL);
c4iw_put_ep(&ep->com);
return 0;
}
@@ -3248,6 +3302,13 @@ int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
err = -ENOMEM;
goto out;
}
+
+ skb_queue_head_init(&ep->com.ep_skb_list);
+ if (alloc_ep_skb_list(&ep->com.ep_skb_list, CN_MAX_CON_BUF)) {
+ err = -ENOMEM;
+ goto fail1;
+ }
+
init_timer(&ep->timer);
ep->plen = conn_param->private_data_len;
if (ep->plen)
@@ -3266,7 +3327,7 @@ int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
if (!ep->com.qp) {
PDBG("%s qpn 0x%x not found!\n", __func__, conn_param->qpn);
err = -EINVAL;
- goto fail1;
+ goto fail2;
}
ref_qp(ep);
PDBG("%s qpn 0x%x qp %p cm_id %p\n", __func__, conn_param->qpn,
@@ -3279,7 +3340,7 @@ int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
if (ep->atid == -1) {
printk(KERN_ERR MOD "%s - cannot alloc atid.\n", __func__);
err = -ENOMEM;
- goto fail1;
+ goto fail2;
}
insert_handle(dev, &dev->atid_idr, ep, ep->atid);
@@ -3303,7 +3364,7 @@ int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
if (raddr->sin_addr.s_addr == htonl(INADDR_ANY)) {
err = pick_local_ipaddrs(dev, cm_id);
if (err)
- goto fail1;
+ goto fail2;
}
/* find a route */
@@ -3323,7 +3384,7 @@ int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
if (ipv6_addr_type(&raddr6->sin6_addr) == IPV6_ADDR_ANY) {
err = pick_local_ip6addrs(dev, cm_id);
if (err)
- goto fail1;
+ goto fail2;
}
/* find a route */
@@ -3339,14 +3400,14 @@ int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
if (!ep->dst) {
printk(KERN_ERR MOD "%s - cannot find route.\n", __func__);
err = -EHOSTUNREACH;
- goto fail2;
+ goto fail3;
}
err = import_ep(ep, iptype, ra, ep->dst, ep->com.dev, true,
ep->com.dev->rdev.lldi.adapter_type, cm_id->tos);
if (err) {
printk(KERN_ERR MOD "%s - cannot alloc l2e.\n", __func__);
- goto fail3;
+ goto fail4;
}
PDBG("%s txq_idx %u tx_chan %u smac_idx %u rss_qid %u l2t_idx %u\n",
@@ -3362,13 +3423,15 @@ int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
goto out;
cxgb4_l2t_release(ep->l2t);
-fail3:
+fail4:
dst_release(ep->dst);
-fail2:
+fail3:
remove_handle(ep->com.dev, &ep->com.dev->atid_idr, ep->atid);
cxgb4_free_atid(ep->com.dev->rdev.lldi.tids, ep->atid);
-fail1:
+fail2:
+ skb_queue_purge(&ep->com.ep_skb_list);
deref_cm_id(&ep->com);
+fail1:
c4iw_put_ep(&ep->com);
out:
return err;
@@ -3461,6 +3524,7 @@ int c4iw_create_listen(struct iw_cm_id *cm_id, int backlog)
err = -ENOMEM;
goto fail1;
}
+ skb_queue_head_init(&ep->com.ep_skb_list);
PDBG("%s ep %p\n", __func__, ep);
ep->com.cm_id = cm_id;
ref_cm_id(&ep->com);
@@ -3577,11 +3641,22 @@ int c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp)
case MPA_REQ_RCVD:
case MPA_REP_SENT:
case FPDU_MODE:
+ case CONNECTING:
close = 1;
if (abrupt)
ep->com.state = ABORTING;
else {
ep->com.state = CLOSING;
+
+ /*
+ * if we close before we see the fw4_ack() then we fix
+ * up the timer state since we're reusing it.
+ */
+ if (ep->mpa_skb &&
+ test_bit(STOP_MPA_TIMER, &ep->com.flags)) {
+ clear_bit(STOP_MPA_TIMER, &ep->com.flags);
+ stop_ep_timer(ep);
+ }
start_ep_timer(ep);
}
set_bit(CLOSE_SENT, &ep->com.flags);
@@ -3611,10 +3686,10 @@ int c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp)
if (abrupt) {
set_bit(EP_DISC_ABORT, &ep->com.history);
close_complete_upcall(ep, -ECONNRESET);
- ret = send_abort(ep, NULL, gfp);
+ ret = send_abort(ep);
} else {
set_bit(EP_DISC_CLOSE, &ep->com.history);
- ret = send_halfclose(ep, gfp);
+ ret = send_halfclose(ep);
}
if (ret) {
set_bit(EP_DISC_FAIL, &ep->com.history);
diff --git a/drivers/infiniband/hw/cxgb4/cq.c b/drivers/infiniband/hw/cxgb4/cq.c
index b0b955724458..812ab7278b8e 100644
--- a/drivers/infiniband/hw/cxgb4/cq.c
+++ b/drivers/infiniband/hw/cxgb4/cq.c
@@ -33,19 +33,15 @@
#include "iw_cxgb4.h"
static int destroy_cq(struct c4iw_rdev *rdev, struct t4_cq *cq,
- struct c4iw_dev_ucontext *uctx)
+ struct c4iw_dev_ucontext *uctx, struct sk_buff *skb)
{
struct fw_ri_res_wr *res_wr;
struct fw_ri_res *res;
int wr_len;
struct c4iw_wr_wait wr_wait;
- struct sk_buff *skb;
int ret;
wr_len = sizeof *res_wr + sizeof *res;
- skb = alloc_skb(wr_len, GFP_KERNEL);
- if (!skb)
- return -ENOMEM;
set_wr_txq(skb, CPL_PRIORITY_CONTROL, 0);
res_wr = (struct fw_ri_res_wr *)__skb_put(skb, wr_len);
@@ -863,7 +859,9 @@ int c4iw_destroy_cq(struct ib_cq *ib_cq)
ucontext = ib_cq->uobject ? to_c4iw_ucontext(ib_cq->uobject->context)
: NULL;
destroy_cq(&chp->rhp->rdev, &chp->cq,
- ucontext ? &ucontext->uctx : &chp->cq.rdev->uctx);
+ ucontext ? &ucontext->uctx : &chp->cq.rdev->uctx,
+ chp->destroy_skb);
+ chp->destroy_skb = NULL;
kfree(chp);
return 0;
}
@@ -879,7 +877,7 @@ struct ib_cq *c4iw_create_cq(struct ib_device *ibdev,
struct c4iw_cq *chp;
struct c4iw_create_cq_resp uresp;
struct c4iw_ucontext *ucontext = NULL;
- int ret;
+ int ret, wr_len;
size_t memsize, hwentries;
struct c4iw_mm_entry *mm, *mm2;
@@ -896,6 +894,13 @@ struct ib_cq *c4iw_create_cq(struct ib_device *ibdev,
if (!chp)
return ERR_PTR(-ENOMEM);
+ wr_len = sizeof(struct fw_ri_res_wr) + sizeof(struct fw_ri_res);
+ chp->destroy_skb = alloc_skb(wr_len, GFP_KERNEL);
+ if (!chp->destroy_skb) {
+ ret = -ENOMEM;
+ goto err1;
+ }
+
if (ib_context)
ucontext = to_c4iw_ucontext(ib_context);
@@ -936,7 +941,7 @@ struct ib_cq *c4iw_create_cq(struct ib_device *ibdev,
ret = create_cq(&rhp->rdev, &chp->cq,
ucontext ? &ucontext->uctx : &rhp->rdev.uctx);
if (ret)
- goto err1;
+ goto err2;
chp->rhp = rhp;
chp->cq.size--; /* status page */
@@ -947,15 +952,15 @@ struct ib_cq *c4iw_create_cq(struct ib_device *ibdev,
init_waitqueue_head(&chp->wait);
ret = insert_handle(rhp, &rhp->cqidr, chp, chp->cq.cqid);
if (ret)
- goto err2;
+ goto err3;
if (ucontext) {
mm = kmalloc(sizeof *mm, GFP_KERNEL);
if (!mm)
- goto err3;
+ goto err4;
mm2 = kmalloc(sizeof *mm2, GFP_KERNEL);
if (!mm2)
- goto err4;
+ goto err5;
uresp.qid_mask = rhp->rdev.cqmask;
uresp.cqid = chp->cq.cqid;
@@ -970,7 +975,7 @@ struct ib_cq *c4iw_create_cq(struct ib_device *ibdev,
ret = ib_copy_to_udata(udata, &uresp,
sizeof(uresp) - sizeof(uresp.reserved));
if (ret)
- goto err5;
+ goto err6;
mm->key = uresp.key;
mm->addr = virt_to_phys(chp->cq.queue);
@@ -986,15 +991,18 @@ struct ib_cq *c4iw_create_cq(struct ib_device *ibdev,
__func__, chp->cq.cqid, chp, chp->cq.size,
chp->cq.memsize, (unsigned long long) chp->cq.dma_addr);
return &chp->ibcq;
-err5:
+err6:
kfree(mm2);
-err4:
+err5:
kfree(mm);
-err3:
+err4:
remove_handle(rhp, &rhp->cqidr, chp->cq.cqid);
-err2:
+err3:
destroy_cq(&chp->rhp->rdev, &chp->cq,
- ucontext ? &ucontext->uctx : &rhp->rdev.uctx);
+ ucontext ? &ucontext->uctx : &rhp->rdev.uctx,
+ chp->destroy_skb);
+err2:
+ kfree_skb(chp->destroy_skb);
err1:
kfree(chp);
return ERR_PTR(ret);
diff --git a/drivers/infiniband/hw/cxgb4/device.c b/drivers/infiniband/hw/cxgb4/device.c
index ae2e8b23d2dd..071d7332ec06 100644
--- a/drivers/infiniband/hw/cxgb4/device.c
+++ b/drivers/infiniband/hw/cxgb4/device.c
@@ -317,7 +317,7 @@ static int qp_open(struct inode *inode, struct file *file)
idr_for_each(&qpd->devp->qpidr, count_idrs, &count);
spin_unlock_irq(&qpd->devp->lock);
- qpd->bufsize = count * 128;
+ qpd->bufsize = count * 180;
qpd->buf = vmalloc(qpd->bufsize);
if (!qpd->buf) {
kfree(qpd);
diff --git a/drivers/infiniband/hw/cxgb4/iw_cxgb4.h b/drivers/infiniband/hw/cxgb4/iw_cxgb4.h
index f6f34a75af27..aa47e0ae80bc 100644
--- a/drivers/infiniband/hw/cxgb4/iw_cxgb4.h
+++ b/drivers/infiniband/hw/cxgb4/iw_cxgb4.h
@@ -384,6 +384,7 @@ struct c4iw_mr {
struct ib_mr ibmr;
struct ib_umem *umem;
struct c4iw_dev *rhp;
+ struct sk_buff *dereg_skb;
u64 kva;
struct tpt_attributes attr;
u64 *mpl;
@@ -400,6 +401,7 @@ static inline struct c4iw_mr *to_c4iw_mr(struct ib_mr *ibmr)
struct c4iw_mw {
struct ib_mw ibmw;
struct c4iw_dev *rhp;
+ struct sk_buff *dereg_skb;
u64 kva;
struct tpt_attributes attr;
};
@@ -412,6 +414,7 @@ static inline struct c4iw_mw *to_c4iw_mw(struct ib_mw *ibmw)
struct c4iw_cq {
struct ib_cq ibcq;
struct c4iw_dev *rhp;
+ struct sk_buff *destroy_skb;
struct t4_cq cq;
spinlock_t lock;
spinlock_t comp_handler_lock;
@@ -472,7 +475,7 @@ struct c4iw_qp {
struct t4_wq wq;
spinlock_t lock;
struct mutex mutex;
- atomic_t refcnt;
+ struct kref kref;
wait_queue_head_t wait;
struct timer_list timer;
int sq_sig_all;
@@ -789,10 +792,29 @@ enum c4iw_ep_history {
CM_ID_DEREFED = 28,
};
+enum conn_pre_alloc_buffers {
+ CN_ABORT_REQ_BUF,
+ CN_ABORT_RPL_BUF,
+ CN_CLOSE_CON_REQ_BUF,
+ CN_DESTROY_BUF,
+ CN_FLOWC_BUF,
+ CN_MAX_CON_BUF
+};
+
+#define FLOWC_LEN 80
+union cpl_wr_size {
+ struct cpl_abort_req abrt_req;
+ struct cpl_abort_rpl abrt_rpl;
+ struct fw_ri_wr ri_req;
+ struct cpl_close_con_req close_req;
+ char flowc_buf[FLOWC_LEN];
+};
+
struct c4iw_ep_common {
struct iw_cm_id *cm_id;
struct c4iw_qp *qp;
struct c4iw_dev *dev;
+ struct sk_buff_head ep_skb_list;
enum c4iw_ep_state state;
struct kref kref;
struct mutex mutex;
diff --git a/drivers/infiniband/hw/cxgb4/mem.c b/drivers/infiniband/hw/cxgb4/mem.c
index 55d0651ee4de..0b91b0f4df71 100644
--- a/drivers/infiniband/hw/cxgb4/mem.c
+++ b/drivers/infiniband/hw/cxgb4/mem.c
@@ -59,9 +59,9 @@ static int mr_exceeds_hw_limits(struct c4iw_dev *dev, u64 length)
}
static int _c4iw_write_mem_dma_aligned(struct c4iw_rdev *rdev, u32 addr,
- u32 len, dma_addr_t data, int wait)
+ u32 len, dma_addr_t data,
+ int wait, struct sk_buff *skb)
{
- struct sk_buff *skb;
struct ulp_mem_io *req;
struct ulptx_sgl *sgl;
u8 wr_len;
@@ -74,9 +74,11 @@ static int _c4iw_write_mem_dma_aligned(struct c4iw_rdev *rdev, u32 addr,
c4iw_init_wr_wait(&wr_wait);
wr_len = roundup(sizeof(*req) + sizeof(*sgl), 16);
- skb = alloc_skb(wr_len, GFP_KERNEL);
- if (!skb)
- return -ENOMEM;
+ if (!skb) {
+ skb = alloc_skb(wr_len, GFP_KERNEL | __GFP_NOFAIL);
+ if (!skb)
+ return -ENOMEM;
+ }
set_wr_txq(skb, CPL_PRIORITY_CONTROL, 0);
req = (struct ulp_mem_io *)__skb_put(skb, wr_len);
@@ -108,9 +110,8 @@ static int _c4iw_write_mem_dma_aligned(struct c4iw_rdev *rdev, u32 addr,
}
static int _c4iw_write_mem_inline(struct c4iw_rdev *rdev, u32 addr, u32 len,
- void *data)
+ void *data, struct sk_buff *skb)
{
- struct sk_buff *skb;
struct ulp_mem_io *req;
struct ulptx_idata *sc;
u8 wr_len, *to_dp, *from_dp;
@@ -134,9 +135,11 @@ static int _c4iw_write_mem_inline(struct c4iw_rdev *rdev, u32 addr, u32 len,
wr_len = roundup(sizeof *req + sizeof *sc +
roundup(copy_len, T4_ULPTX_MIN_IO), 16);
- skb = alloc_skb(wr_len, GFP_KERNEL);
- if (!skb)
- return -ENOMEM;
+ if (!skb) {
+ skb = alloc_skb(wr_len, GFP_KERNEL | __GFP_NOFAIL);
+ if (!skb)
+ return -ENOMEM;
+ }
set_wr_txq(skb, CPL_PRIORITY_CONTROL, 0);
req = (struct ulp_mem_io *)__skb_put(skb, wr_len);
@@ -173,6 +176,7 @@ static int _c4iw_write_mem_inline(struct c4iw_rdev *rdev, u32 addr, u32 len,
memset(to_dp + copy_len, 0, T4_ULPTX_MIN_IO -
(copy_len % T4_ULPTX_MIN_IO));
ret = c4iw_ofld_send(rdev, skb);
+ skb = NULL;
if (ret)
return ret;
len -= C4IW_MAX_INLINE_SIZE;
@@ -182,7 +186,8 @@ static int _c4iw_write_mem_inline(struct c4iw_rdev *rdev, u32 addr, u32 len,
return ret;
}
-static int _c4iw_write_mem_dma(struct c4iw_rdev *rdev, u32 addr, u32 len, void *data)
+static int _c4iw_write_mem_dma(struct c4iw_rdev *rdev, u32 addr, u32 len,
+ void *data, struct sk_buff *skb)
{
u32 remain = len;
u32 dmalen;
@@ -205,7 +210,7 @@ static int _c4iw_write_mem_dma(struct c4iw_rdev *rdev, u32 addr, u32 len, void *
dmalen = T4_ULPTX_MAX_DMA;
remain -= dmalen;
ret = _c4iw_write_mem_dma_aligned(rdev, addr, dmalen, daddr,
- !remain);
+ !remain, skb);
if (ret)
goto out;
addr += dmalen >> 5;
@@ -213,7 +218,7 @@ static int _c4iw_write_mem_dma(struct c4iw_rdev *rdev, u32 addr, u32 len, void *
daddr += dmalen;
}
if (remain)
- ret = _c4iw_write_mem_inline(rdev, addr, remain, data);
+ ret = _c4iw_write_mem_inline(rdev, addr, remain, data, skb);
out:
dma_unmap_single(&rdev->lldi.pdev->dev, save, len, DMA_TO_DEVICE);
return ret;
@@ -224,23 +229,25 @@ out:
* If data is NULL, clear len byte of memory to zero.
*/
static int write_adapter_mem(struct c4iw_rdev *rdev, u32 addr, u32 len,
- void *data)
+ void *data, struct sk_buff *skb)
{
if (is_t5(rdev->lldi.adapter_type) && use_dsgl) {
if (len > inline_threshold) {
- if (_c4iw_write_mem_dma(rdev, addr, len, data)) {
+ if (_c4iw_write_mem_dma(rdev, addr, len, data, skb)) {
printk_ratelimited(KERN_WARNING
"%s: dma map"
" failure (non fatal)\n",
pci_name(rdev->lldi.pdev));
return _c4iw_write_mem_inline(rdev, addr, len,
- data);
- } else
+ data, skb);
+ } else {
return 0;
+ }
} else
- return _c4iw_write_mem_inline(rdev, addr, len, data);
+ return _c4iw_write_mem_inline(rdev, addr,
+ len, data, skb);
} else
- return _c4iw_write_mem_inline(rdev, addr, len, data);
+ return _c4iw_write_mem_inline(rdev, addr, len, data, skb);
}
/*
@@ -253,7 +260,8 @@ static int write_tpt_entry(struct c4iw_rdev *rdev, u32 reset_tpt_entry,
u32 *stag, u8 stag_state, u32 pdid,
enum fw_ri_stag_type type, enum fw_ri_mem_perms perm,
int bind_enabled, u32 zbva, u64 to,
- u64 len, u8 page_size, u32 pbl_size, u32 pbl_addr)
+ u64 len, u8 page_size, u32 pbl_size, u32 pbl_addr,
+ struct sk_buff *skb)
{
int err;
struct fw_ri_tpte tpt;
@@ -307,7 +315,7 @@ static int write_tpt_entry(struct c4iw_rdev *rdev, u32 reset_tpt_entry,
}
err = write_adapter_mem(rdev, stag_idx +
(rdev->lldi.vr->stag.start >> 5),
- sizeof(tpt), &tpt);
+ sizeof(tpt), &tpt, skb);
if (reset_tpt_entry) {
c4iw_put_resource(&rdev->resource.tpt_table, stag_idx);
@@ -327,28 +335,29 @@ static int write_pbl(struct c4iw_rdev *rdev, __be64 *pbl,
__func__, pbl_addr, rdev->lldi.vr->pbl.start,
pbl_size);
- err = write_adapter_mem(rdev, pbl_addr >> 5, pbl_size << 3, pbl);
+ err = write_adapter_mem(rdev, pbl_addr >> 5, pbl_size << 3, pbl, NULL);
return err;
}
static int dereg_mem(struct c4iw_rdev *rdev, u32 stag, u32 pbl_size,
- u32 pbl_addr)
+ u32 pbl_addr, struct sk_buff *skb)
{
return write_tpt_entry(rdev, 1, &stag, 0, 0, 0, 0, 0, 0, 0UL, 0, 0,
- pbl_size, pbl_addr);
+ pbl_size, pbl_addr, skb);
}
static int allocate_window(struct c4iw_rdev *rdev, u32 * stag, u32 pdid)
{
*stag = T4_STAG_UNSET;
return write_tpt_entry(rdev, 0, stag, 0, pdid, FW_RI_STAG_MW, 0, 0, 0,
- 0UL, 0, 0, 0, 0);
+ 0UL, 0, 0, 0, 0, NULL);
}
-static int deallocate_window(struct c4iw_rdev *rdev, u32 stag)
+static int deallocate_window(struct c4iw_rdev *rdev, u32 stag,
+ struct sk_buff *skb)
{
return write_tpt_entry(rdev, 1, &stag, 0, 0, 0, 0, 0, 0, 0UL, 0, 0, 0,
- 0);
+ 0, skb);
}
static int allocate_stag(struct c4iw_rdev *rdev, u32 *stag, u32 pdid,
@@ -356,7 +365,7 @@ static int allocate_stag(struct c4iw_rdev *rdev, u32 *stag, u32 pdid,
{
*stag = T4_STAG_UNSET;
return write_tpt_entry(rdev, 0, stag, 0, pdid, FW_RI_STAG_NSMR, 0, 0, 0,
- 0UL, 0, 0, pbl_size, pbl_addr);
+ 0UL, 0, 0, pbl_size, pbl_addr, NULL);
}
static int finish_mem_reg(struct c4iw_mr *mhp, u32 stag)
@@ -383,14 +392,16 @@ static int register_mem(struct c4iw_dev *rhp, struct c4iw_pd *php,
mhp->attr.mw_bind_enable, mhp->attr.zbva,
mhp->attr.va_fbo, mhp->attr.len ?
mhp->attr.len : -1, shift - 12,
- mhp->attr.pbl_size, mhp->attr.pbl_addr);
+ mhp->attr.pbl_size, mhp->attr.pbl_addr, NULL);
if (ret)
return ret;
ret = finish_mem_reg(mhp, stag);
- if (ret)
+ if (ret) {
dereg_mem(&rhp->rdev, mhp->attr.stag, mhp->attr.pbl_size,
- mhp->attr.pbl_addr);
+ mhp->attr.pbl_addr, mhp->dereg_skb);
+ mhp->dereg_skb = NULL;
+ }
return ret;
}
@@ -423,6 +434,12 @@ struct ib_mr *c4iw_get_dma_mr(struct ib_pd *pd, int acc)
if (!mhp)
return ERR_PTR(-ENOMEM);
+ mhp->dereg_skb = alloc_skb(SGE_MAX_WR_LEN, GFP_KERNEL);
+ if (!mhp->dereg_skb) {
+ ret = -ENOMEM;
+ goto err0;
+ }
+
mhp->rhp = rhp;
mhp->attr.pdid = php->pdid;
mhp->attr.perms = c4iw_ib_to_tpt_access(acc);
@@ -435,7 +452,8 @@ struct ib_mr *c4iw_get_dma_mr(struct ib_pd *pd, int acc)
ret = write_tpt_entry(&rhp->rdev, 0, &stag, 1, php->pdid,
FW_RI_STAG_NSMR, mhp->attr.perms,
- mhp->attr.mw_bind_enable, 0, 0, ~0ULL, 0, 0, 0);
+ mhp->attr.mw_bind_enable, 0, 0, ~0ULL, 0, 0, 0,
+ NULL);
if (ret)
goto err1;
@@ -445,8 +463,10 @@ struct ib_mr *c4iw_get_dma_mr(struct ib_pd *pd, int acc)
return &mhp->ibmr;
err2:
dereg_mem(&rhp->rdev, mhp->attr.stag, mhp->attr.pbl_size,
- mhp->attr.pbl_addr);
+ mhp->attr.pbl_addr, mhp->dereg_skb);
err1:
+ kfree_skb(mhp->dereg_skb);
+err0:
kfree(mhp);
return ERR_PTR(ret);
}
@@ -481,11 +501,18 @@ struct ib_mr *c4iw_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
if (!mhp)
return ERR_PTR(-ENOMEM);
+ mhp->dereg_skb = alloc_skb(SGE_MAX_WR_LEN, GFP_KERNEL);
+ if (!mhp->dereg_skb) {
+ kfree(mhp);
+ return ERR_PTR(-ENOMEM);
+ }
+
mhp->rhp = rhp;
mhp->umem = ib_umem_get(pd->uobject->context, start, length, acc, 0);
if (IS_ERR(mhp->umem)) {
err = PTR_ERR(mhp->umem);
+ kfree_skb(mhp->dereg_skb);
kfree(mhp);
return ERR_PTR(err);
}
@@ -550,6 +577,7 @@ err_pbl:
err:
ib_umem_release(mhp->umem);
+ kfree_skb(mhp->dereg_skb);
kfree(mhp);
return ERR_PTR(err);
}
@@ -572,11 +600,16 @@ struct ib_mw *c4iw_alloc_mw(struct ib_pd *pd, enum ib_mw_type type,
mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
if (!mhp)
return ERR_PTR(-ENOMEM);
- ret = allocate_window(&rhp->rdev, &stag, php->pdid);
- if (ret) {
- kfree(mhp);
- return ERR_PTR(ret);
+
+ mhp->dereg_skb = alloc_skb(SGE_MAX_WR_LEN, GFP_KERNEL);
+ if (!mhp->dereg_skb) {
+ ret = -ENOMEM;
+ goto free_mhp;
}
+
+ ret = allocate_window(&rhp->rdev, &stag, php->pdid);
+ if (ret)
+ goto free_skb;
mhp->rhp = rhp;
mhp->attr.pdid = php->pdid;
mhp->attr.type = FW_RI_STAG_MW;
@@ -584,12 +617,19 @@ struct ib_mw *c4iw_alloc_mw(struct ib_pd *pd, enum ib_mw_type type,
mmid = (stag) >> 8;
mhp->ibmw.rkey = stag;
if (insert_handle(rhp, &rhp->mmidr, mhp, mmid)) {
- deallocate_window(&rhp->rdev, mhp->attr.stag);
- kfree(mhp);
- return ERR_PTR(-ENOMEM);
+ ret = -ENOMEM;
+ goto dealloc_win;
}
PDBG("%s mmid 0x%x mhp %p stag 0x%x\n", __func__, mmid, mhp, stag);
return &(mhp->ibmw);
+
+dealloc_win:
+ deallocate_window(&rhp->rdev, mhp->attr.stag, mhp->dereg_skb);
+free_skb:
+ kfree_skb(mhp->dereg_skb);
+free_mhp:
+ kfree(mhp);
+ return ERR_PTR(ret);
}
int c4iw_dealloc_mw(struct ib_mw *mw)
@@ -602,7 +642,8 @@ int c4iw_dealloc_mw(struct ib_mw *mw)
rhp = mhp->rhp;
mmid = (mw->rkey) >> 8;
remove_handle(rhp, &rhp->mmidr, mmid);
- deallocate_window(&rhp->rdev, mhp->attr.stag);
+ deallocate_window(&rhp->rdev, mhp->attr.stag, mhp->dereg_skb);
+ kfree_skb(mhp->dereg_skb);
kfree(mhp);
PDBG("%s ib_mw %p mmid 0x%x ptr %p\n", __func__, mw, mmid, mhp);
return 0;
@@ -666,7 +707,7 @@ struct ib_mr *c4iw_alloc_mr(struct ib_pd *pd,
return &(mhp->ibmr);
err3:
dereg_mem(&rhp->rdev, stag, mhp->attr.pbl_size,
- mhp->attr.pbl_addr);
+ mhp->attr.pbl_addr, mhp->dereg_skb);
err2:
c4iw_pblpool_free(&mhp->rhp->rdev, mhp->attr.pbl_addr,
mhp->attr.pbl_size << 3);
@@ -717,7 +758,7 @@ int c4iw_dereg_mr(struct ib_mr *ib_mr)
dma_free_coherent(&mhp->rhp->rdev.lldi.pdev->dev,
mhp->max_mpl_len, mhp->mpl, mhp->mpl_addr);
dereg_mem(&rhp->rdev, mhp->attr.stag, mhp->attr.pbl_size,
- mhp->attr.pbl_addr);
+ mhp->attr.pbl_addr, mhp->dereg_skb);
if (mhp->attr.pbl_size)
c4iw_pblpool_free(&mhp->rhp->rdev, mhp->attr.pbl_addr,
mhp->attr.pbl_size << 3);
diff --git a/drivers/infiniband/hw/cxgb4/provider.c b/drivers/infiniband/hw/cxgb4/provider.c
index dd8a86b726d2..df127ce6b6ec 100644
--- a/drivers/infiniband/hw/cxgb4/provider.c
+++ b/drivers/infiniband/hw/cxgb4/provider.c
@@ -409,20 +409,6 @@ static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
CHELSIO_CHIP_RELEASE(c4iw_dev->rdev.lldi.adapter_type));
}
-static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr,
- char *buf)
-{
- struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev,
- ibdev.dev);
- PDBG("%s dev 0x%p\n", __func__, dev);
-
- return sprintf(buf, "%u.%u.%u.%u\n",
- FW_HDR_FW_VER_MAJOR_G(c4iw_dev->rdev.lldi.fw_vers),
- FW_HDR_FW_VER_MINOR_G(c4iw_dev->rdev.lldi.fw_vers),
- FW_HDR_FW_VER_MICRO_G(c4iw_dev->rdev.lldi.fw_vers),
- FW_HDR_FW_VER_BUILD_G(c4iw_dev->rdev.lldi.fw_vers));
-}
-
static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
char *buf)
{
@@ -502,13 +488,11 @@ static int c4iw_get_mib(struct ib_device *ibdev,
}
static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
-static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
static struct device_attribute *c4iw_class_attributes[] = {
&dev_attr_hw_rev,
- &dev_attr_fw_ver,
&dev_attr_hca_type,
&dev_attr_board_id,
};
@@ -530,6 +514,20 @@ static int c4iw_port_immutable(struct ib_device *ibdev, u8 port_num,
return 0;
}
+static void get_dev_fw_str(struct ib_device *dev, char *str,
+ size_t str_len)
+{
+ struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev,
+ ibdev);
+ PDBG("%s dev 0x%p\n", __func__, dev);
+
+ snprintf(str, str_len, "%u.%u.%u.%u",
+ FW_HDR_FW_VER_MAJOR_G(c4iw_dev->rdev.lldi.fw_vers),
+ FW_HDR_FW_VER_MINOR_G(c4iw_dev->rdev.lldi.fw_vers),
+ FW_HDR_FW_VER_MICRO_G(c4iw_dev->rdev.lldi.fw_vers),
+ FW_HDR_FW_VER_BUILD_G(c4iw_dev->rdev.lldi.fw_vers));
+}
+
int c4iw_register_device(struct c4iw_dev *dev)
{
int ret;
@@ -605,6 +603,7 @@ int c4iw_register_device(struct c4iw_dev *dev)
dev->ibdev.get_hw_stats = c4iw_get_mib;
dev->ibdev.uverbs_abi_ver = C4IW_UVERBS_ABI_VERSION;
dev->ibdev.get_port_immutable = c4iw_port_immutable;
+ dev->ibdev.get_dev_fw_str = get_dev_fw_str;
dev->ibdev.drain_sq = c4iw_drain_sq;
dev->ibdev.drain_rq = c4iw_drain_rq;
diff --git a/drivers/infiniband/hw/cxgb4/qp.c b/drivers/infiniband/hw/cxgb4/qp.c
index e8993e49b8b3..edb1172b6f54 100644
--- a/drivers/infiniband/hw/cxgb4/qp.c
+++ b/drivers/infiniband/hw/cxgb4/qp.c
@@ -683,17 +683,25 @@ static int build_inv_stag(union t4_wr *wqe, struct ib_send_wr *wr,
return 0;
}
+void _free_qp(struct kref *kref)
+{
+ struct c4iw_qp *qhp;
+
+ qhp = container_of(kref, struct c4iw_qp, kref);
+ PDBG("%s qhp %p\n", __func__, qhp);
+ kfree(qhp);
+}
+
void c4iw_qp_add_ref(struct ib_qp *qp)
{
PDBG("%s ib_qp %p\n", __func__, qp);
- atomic_inc(&(to_c4iw_qp(qp)->refcnt));
+ kref_get(&to_c4iw_qp(qp)->kref);
}
void c4iw_qp_rem_ref(struct ib_qp *qp)
{
PDBG("%s ib_qp %p\n", __func__, qp);
- if (atomic_dec_and_test(&(to_c4iw_qp(qp)->refcnt)))
- wake_up(&(to_c4iw_qp(qp)->wait));
+ kref_put(&to_c4iw_qp(qp)->kref, _free_qp);
}
static void add_to_fc_list(struct list_head *head, struct list_head *entry)
@@ -1081,9 +1089,10 @@ static void post_terminate(struct c4iw_qp *qhp, struct t4_cqe *err_cqe,
PDBG("%s qhp %p qid 0x%x tid %u\n", __func__, qhp, qhp->wq.sq.qid,
qhp->ep->hwtid);
- skb = alloc_skb(sizeof *wqe, gfp);
- if (!skb)
+ skb = skb_dequeue(&qhp->ep->com.ep_skb_list);
+ if (WARN_ON(!skb))
return;
+
set_wr_txq(skb, CPL_PRIORITY_DATA, qhp->ep->txq_idx);
wqe = (struct fw_ri_wr *)__skb_put(skb, sizeof(*wqe));
@@ -1202,9 +1211,10 @@ static int rdma_fini(struct c4iw_dev *rhp, struct c4iw_qp *qhp,
PDBG("%s qhp %p qid 0x%x tid %u\n", __func__, qhp, qhp->wq.sq.qid,
ep->hwtid);
- skb = alloc_skb(sizeof *wqe, GFP_KERNEL);
- if (!skb)
+ skb = skb_dequeue(&ep->com.ep_skb_list);
+ if (WARN_ON(!skb))
return -ENOMEM;
+
set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx);
wqe = (struct fw_ri_wr *)__skb_put(skb, sizeof(*wqe));
@@ -1592,8 +1602,6 @@ int c4iw_destroy_qp(struct ib_qp *ib_qp)
wait_event(qhp->wait, !qhp->ep);
remove_handle(rhp, &rhp->qpidr, qhp->wq.sq.qid);
- atomic_dec(&qhp->refcnt);
- wait_event(qhp->wait, !atomic_read(&qhp->refcnt));
spin_lock_irq(&rhp->lock);
if (!list_empty(&qhp->db_fc_entry))
@@ -1606,8 +1614,9 @@ int c4iw_destroy_qp(struct ib_qp *ib_qp)
destroy_qp(&rhp->rdev, &qhp->wq,
ucontext ? &ucontext->uctx : &rhp->rdev.uctx);
+ c4iw_qp_rem_ref(ib_qp);
+
PDBG("%s ib_qp %p qpid 0x%0x\n", __func__, ib_qp, qhp->wq.sq.qid);
- kfree(qhp);
return 0;
}
@@ -1704,7 +1713,7 @@ struct ib_qp *c4iw_create_qp(struct ib_pd *pd, struct ib_qp_init_attr *attrs,
init_completion(&qhp->rq_drained);
mutex_init(&qhp->mutex);
init_waitqueue_head(&qhp->wait);
- atomic_set(&qhp->refcnt, 1);
+ kref_init(&qhp->kref);
ret = insert_handle(rhp, &rhp->qpidr, qhp, qhp->wq.sq.qid);
if (ret)
@@ -1896,12 +1905,20 @@ int c4iw_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
return 0;
}
+static void move_qp_to_err(struct c4iw_qp *qp)
+{
+ struct c4iw_qp_attributes attrs = { .next_state = C4IW_QP_STATE_ERROR };
+
+ (void)c4iw_modify_qp(qp->rhp, qp, C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
+}
+
void c4iw_drain_sq(struct ib_qp *ibqp)
{
struct c4iw_qp *qp = to_c4iw_qp(ibqp);
unsigned long flag;
bool need_to_wait;
+ move_qp_to_err(qp);
spin_lock_irqsave(&qp->lock, flag);
need_to_wait = !t4_sq_empty(&qp->wq);
spin_unlock_irqrestore(&qp->lock, flag);
@@ -1916,6 +1933,7 @@ void c4iw_drain_rq(struct ib_qp *ibqp)
unsigned long flag;
bool need_to_wait;
+ move_qp_to_err(qp);
spin_lock_irqsave(&qp->lock, flag);
need_to_wait = !t4_rq_empty(&qp->wq);
spin_unlock_irqrestore(&qp->lock, flag);
diff --git a/drivers/infiniband/hw/hfi1/Kconfig b/drivers/infiniband/hw/hfi1/Kconfig
index a925fb0db706..f6ea0881765a 100644
--- a/drivers/infiniband/hw/hfi1/Kconfig
+++ b/drivers/infiniband/hw/hfi1/Kconfig
@@ -1,9 +1,9 @@
config INFINIBAND_HFI1
tristate "Intel OPA Gen1 support"
- depends on X86_64 && INFINIBAND_RDMAVT
+ depends on X86_64 && INFINIBAND_RDMAVT && I2C
select MMU_NOTIFIER
select CRC32
- default m
+ select I2C_ALGOBIT
---help---
This is a low-level driver for Intel OPA Gen1 adapter.
config HFI1_DEBUG_SDMA_ORDER
diff --git a/drivers/infiniband/hw/hfi1/Makefile b/drivers/infiniband/hw/hfi1/Makefile
index 9b5382c94b0c..0cf97a09b64b 100644
--- a/drivers/infiniband/hw/hfi1/Makefile
+++ b/drivers/infiniband/hw/hfi1/Makefile
@@ -10,7 +10,7 @@ obj-$(CONFIG_INFINIBAND_HFI1) += hfi1.o
hfi1-y := affinity.o chip.o device.o driver.o efivar.o \
eprom.o file_ops.o firmware.o \
init.o intr.o mad.o mmu_rb.o pcie.o pio.o pio_copy.o platform.o \
- qp.o qsfp.o rc.o ruc.o sdma.o sysfs.o trace.o twsi.o \
+ qp.o qsfp.o rc.o ruc.o sdma.o sysfs.o trace.o \
uc.o ud.o user_exp_rcv.o user_pages.o user_sdma.o verbs.o \
verbs_txreq.o
hfi1-$(CONFIG_DEBUG_FS) += debugfs.o
diff --git a/drivers/infiniband/hw/hfi1/affinity.c b/drivers/infiniband/hw/hfi1/affinity.c
index 14d7eeb09be6..79575ee873f2 100644
--- a/drivers/infiniband/hw/hfi1/affinity.c
+++ b/drivers/infiniband/hw/hfi1/affinity.c
@@ -47,12 +47,18 @@
#include <linux/topology.h>
#include <linux/cpumask.h>
#include <linux/module.h>
+#include <linux/cpumask.h>
#include "hfi.h"
#include "affinity.h"
#include "sdma.h"
#include "trace.h"
+struct hfi1_affinity_node_list node_affinity = {
+ .list = LIST_HEAD_INIT(node_affinity.list),
+ .lock = __SPIN_LOCK_UNLOCKED(&node_affinity.lock),
+};
+
/* Name of IRQ types, indexed by enum irq_type */
static const char * const irq_type_names[] = {
"SDMA",
@@ -61,6 +67,9 @@ static const char * const irq_type_names[] = {
"OTHER",
};
+/* Per NUMA node count of HFI devices */
+static unsigned int *hfi1_per_node_cntr;
+
static inline void init_cpu_mask_set(struct cpu_mask_set *set)
{
cpumask_clear(&set->mask);
@@ -69,47 +78,136 @@ static inline void init_cpu_mask_set(struct cpu_mask_set *set)
}
/* Initialize non-HT cpu cores mask */
-int init_real_cpu_mask(struct hfi1_devdata *dd)
+void init_real_cpu_mask(void)
{
- struct hfi1_affinity *info;
int possible, curr_cpu, i, ht;
- info = kzalloc(sizeof(*info), GFP_KERNEL);
- if (!info)
- return -ENOMEM;
-
- cpumask_clear(&info->real_cpu_mask);
+ cpumask_clear(&node_affinity.real_cpu_mask);
/* Start with cpu online mask as the real cpu mask */
- cpumask_copy(&info->real_cpu_mask, cpu_online_mask);
+ cpumask_copy(&node_affinity.real_cpu_mask, cpu_online_mask);
/*
* Remove HT cores from the real cpu mask. Do this in two steps below.
*/
- possible = cpumask_weight(&info->real_cpu_mask);
+ possible = cpumask_weight(&node_affinity.real_cpu_mask);
ht = cpumask_weight(topology_sibling_cpumask(
- cpumask_first(&info->real_cpu_mask)));
+ cpumask_first(&node_affinity.real_cpu_mask)));
/*
* Step 1. Skip over the first N HT siblings and use them as the
* "real" cores. Assumes that HT cores are not enumerated in
* succession (except in the single core case).
*/
- curr_cpu = cpumask_first(&info->real_cpu_mask);
+ curr_cpu = cpumask_first(&node_affinity.real_cpu_mask);
for (i = 0; i < possible / ht; i++)
- curr_cpu = cpumask_next(curr_cpu, &info->real_cpu_mask);
+ curr_cpu = cpumask_next(curr_cpu, &node_affinity.real_cpu_mask);
/*
* Step 2. Remove the remaining HT siblings. Use cpumask_next() to
* skip any gaps.
*/
for (; i < possible; i++) {
- cpumask_clear_cpu(curr_cpu, &info->real_cpu_mask);
- curr_cpu = cpumask_next(curr_cpu, &info->real_cpu_mask);
+ cpumask_clear_cpu(curr_cpu, &node_affinity.real_cpu_mask);
+ curr_cpu = cpumask_next(curr_cpu, &node_affinity.real_cpu_mask);
+ }
+}
+
+int node_affinity_init(void)
+{
+ int node;
+ struct pci_dev *dev = NULL;
+ const struct pci_device_id *ids = hfi1_pci_tbl;
+
+ cpumask_clear(&node_affinity.proc.used);
+ cpumask_copy(&node_affinity.proc.mask, cpu_online_mask);
+
+ node_affinity.proc.gen = 0;
+ node_affinity.num_core_siblings =
+ cpumask_weight(topology_sibling_cpumask(
+ cpumask_first(&node_affinity.proc.mask)
+ ));
+ node_affinity.num_online_nodes = num_online_nodes();
+ node_affinity.num_online_cpus = num_online_cpus();
+
+ /*
+ * The real cpu mask is part of the affinity struct but it has to be
+ * initialized early. It is needed to calculate the number of user
+ * contexts in set_up_context_variables().
+ */
+ init_real_cpu_mask();
+
+ hfi1_per_node_cntr = kcalloc(num_possible_nodes(),
+ sizeof(*hfi1_per_node_cntr), GFP_KERNEL);
+ if (!hfi1_per_node_cntr)
+ return -ENOMEM;
+
+ while (ids->vendor) {
+ dev = NULL;
+ while ((dev = pci_get_device(ids->vendor, ids->device, dev))) {
+ node = pcibus_to_node(dev->bus);
+ if (node < 0)
+ node = numa_node_id();
+
+ hfi1_per_node_cntr[node]++;
+ }
+ ids++;
}
- dd->affinity = info;
return 0;
}
+void node_affinity_destroy(void)
+{
+ struct list_head *pos, *q;
+ struct hfi1_affinity_node *entry;
+
+ spin_lock(&node_affinity.lock);
+ list_for_each_safe(pos, q, &node_affinity.list) {
+ entry = list_entry(pos, struct hfi1_affinity_node,
+ list);
+ list_del(pos);
+ kfree(entry);
+ }
+ spin_unlock(&node_affinity.lock);
+ kfree(hfi1_per_node_cntr);
+}
+
+static struct hfi1_affinity_node *node_affinity_allocate(int node)
+{
+ struct hfi1_affinity_node *entry;
+
+ entry = kzalloc(sizeof(*entry), GFP_KERNEL);
+ if (!entry)
+ return NULL;
+ entry->node = node;
+ INIT_LIST_HEAD(&entry->list);
+
+ return entry;
+}
+
+/*
+ * It appends an entry to the list.
+ * It *must* be called with node_affinity.lock held.
+ */
+static void node_affinity_add_tail(struct hfi1_affinity_node *entry)
+{
+ list_add_tail(&entry->list, &node_affinity.list);
+}
+
+/* It must be called with node_affinity.lock held */
+static struct hfi1_affinity_node *node_affinity_lookup(int node)
+{
+ struct list_head *pos;
+ struct hfi1_affinity_node *entry;
+
+ list_for_each(pos, &node_affinity.list) {
+ entry = list_entry(pos, struct hfi1_affinity_node, list);
+ if (entry->node == node)
+ return entry;
+ }
+
+ return NULL;
+}
+
/*
* Interrupt affinity.
*
@@ -121,10 +219,10 @@ int init_real_cpu_mask(struct hfi1_devdata *dd)
* to the node relative 1 as necessary.
*
*/
-void hfi1_dev_affinity_init(struct hfi1_devdata *dd)
+int hfi1_dev_affinity_init(struct hfi1_devdata *dd)
{
int node = pcibus_to_node(dd->pcidev->bus);
- struct hfi1_affinity *info = dd->affinity;
+ struct hfi1_affinity_node *entry;
const struct cpumask *local_mask;
int curr_cpu, possible, i;
@@ -132,56 +230,93 @@ void hfi1_dev_affinity_init(struct hfi1_devdata *dd)
node = numa_node_id();
dd->node = node;
- spin_lock_init(&info->lock);
-
- init_cpu_mask_set(&info->def_intr);
- init_cpu_mask_set(&info->rcv_intr);
- init_cpu_mask_set(&info->proc);
-
local_mask = cpumask_of_node(dd->node);
if (cpumask_first(local_mask) >= nr_cpu_ids)
local_mask = topology_core_cpumask(0);
- /* Use the "real" cpu mask of this node as the default */
- cpumask_and(&info->def_intr.mask, &info->real_cpu_mask, local_mask);
-
- /* fill in the receive list */
- possible = cpumask_weight(&info->def_intr.mask);
- curr_cpu = cpumask_first(&info->def_intr.mask);
- if (possible == 1) {
- /* only one CPU, everyone will use it */
- cpumask_set_cpu(curr_cpu, &info->rcv_intr.mask);
- } else {
- /*
- * Retain the first CPU in the default list for the control
- * context.
- */
- curr_cpu = cpumask_next(curr_cpu, &info->def_intr.mask);
- /*
- * Remove the remaining kernel receive queues from
- * the default list and add them to the receive list.
- */
- for (i = 0; i < dd->n_krcv_queues - 1; i++) {
- cpumask_clear_cpu(curr_cpu, &info->def_intr.mask);
- cpumask_set_cpu(curr_cpu, &info->rcv_intr.mask);
- curr_cpu = cpumask_next(curr_cpu, &info->def_intr.mask);
- if (curr_cpu >= nr_cpu_ids)
- break;
+
+ spin_lock(&node_affinity.lock);
+ entry = node_affinity_lookup(dd->node);
+ spin_unlock(&node_affinity.lock);
+
+ /*
+ * If this is the first time this NUMA node's affinity is used,
+ * create an entry in the global affinity structure and initialize it.
+ */
+ if (!entry) {
+ entry = node_affinity_allocate(node);
+ if (!entry) {
+ dd_dev_err(dd,
+ "Unable to allocate global affinity node\n");
+ return -ENOMEM;
}
- }
+ init_cpu_mask_set(&entry->def_intr);
+ init_cpu_mask_set(&entry->rcv_intr);
+ cpumask_clear(&entry->general_intr_mask);
+ /* Use the "real" cpu mask of this node as the default */
+ cpumask_and(&entry->def_intr.mask, &node_affinity.real_cpu_mask,
+ local_mask);
+
+ /* fill in the receive list */
+ possible = cpumask_weight(&entry->def_intr.mask);
+ curr_cpu = cpumask_first(&entry->def_intr.mask);
+
+ if (possible == 1) {
+ /* only one CPU, everyone will use it */
+ cpumask_set_cpu(curr_cpu, &entry->rcv_intr.mask);
+ cpumask_set_cpu(curr_cpu, &entry->general_intr_mask);
+ } else {
+ /*
+ * The general/control context will be the first CPU in
+ * the default list, so it is removed from the default
+ * list and added to the general interrupt list.
+ */
+ cpumask_clear_cpu(curr_cpu, &entry->def_intr.mask);
+ cpumask_set_cpu(curr_cpu, &entry->general_intr_mask);
+ curr_cpu = cpumask_next(curr_cpu,
+ &entry->def_intr.mask);
- cpumask_copy(&info->proc.mask, cpu_online_mask);
-}
+ /*
+ * Remove the remaining kernel receive queues from
+ * the default list and add them to the receive list.
+ */
+ for (i = 0;
+ i < (dd->n_krcv_queues - 1) *
+ hfi1_per_node_cntr[dd->node];
+ i++) {
+ cpumask_clear_cpu(curr_cpu,
+ &entry->def_intr.mask);
+ cpumask_set_cpu(curr_cpu,
+ &entry->rcv_intr.mask);
+ curr_cpu = cpumask_next(curr_cpu,
+ &entry->def_intr.mask);
+ if (curr_cpu >= nr_cpu_ids)
+ break;
+ }
-void hfi1_dev_affinity_free(struct hfi1_devdata *dd)
-{
- kfree(dd->affinity);
+ /*
+ * If there ends up being 0 CPU cores leftover for SDMA
+ * engines, use the same CPU cores as general/control
+ * context.
+ */
+ if (cpumask_weight(&entry->def_intr.mask) == 0)
+ cpumask_copy(&entry->def_intr.mask,
+ &entry->general_intr_mask);
+ }
+
+ spin_lock(&node_affinity.lock);
+ node_affinity_add_tail(entry);
+ spin_unlock(&node_affinity.lock);
+ }
+
+ return 0;
}
int hfi1_get_irq_affinity(struct hfi1_devdata *dd, struct hfi1_msix_entry *msix)
{
int ret;
cpumask_var_t diff;
- struct cpu_mask_set *set;
+ struct hfi1_affinity_node *entry;
+ struct cpu_mask_set *set = NULL;
struct sdma_engine *sde = NULL;
struct hfi1_ctxtdata *rcd = NULL;
char extra[64];
@@ -194,22 +329,25 @@ int hfi1_get_irq_affinity(struct hfi1_devdata *dd, struct hfi1_msix_entry *msix)
if (!ret)
return -ENOMEM;
+ spin_lock(&node_affinity.lock);
+ entry = node_affinity_lookup(dd->node);
+ spin_unlock(&node_affinity.lock);
+
switch (msix->type) {
case IRQ_SDMA:
sde = (struct sdma_engine *)msix->arg;
scnprintf(extra, 64, "engine %u", sde->this_idx);
- /* fall through */
+ set = &entry->def_intr;
+ break;
case IRQ_GENERAL:
- set = &dd->affinity->def_intr;
+ cpu = cpumask_first(&entry->general_intr_mask);
break;
case IRQ_RCVCTXT:
rcd = (struct hfi1_ctxtdata *)msix->arg;
- if (rcd->ctxt == HFI1_CTRL_CTXT) {
- set = &dd->affinity->def_intr;
- cpu = cpumask_first(&set->mask);
- } else {
- set = &dd->affinity->rcv_intr;
- }
+ if (rcd->ctxt == HFI1_CTRL_CTXT)
+ cpu = cpumask_first(&entry->general_intr_mask);
+ else
+ set = &entry->rcv_intr;
scnprintf(extra, 64, "ctxt %u", rcd->ctxt);
break;
default:
@@ -218,12 +356,12 @@ int hfi1_get_irq_affinity(struct hfi1_devdata *dd, struct hfi1_msix_entry *msix)
}
/*
- * The control receive context is placed on a particular CPU, which
- * is set above. Skip accounting for it. Everything else finds its
- * CPU here.
+ * The general and control contexts are placed on a particular
+ * CPU, which is set above. Skip accounting for it. Everything else
+ * finds its CPU here.
*/
- if (cpu == -1) {
- spin_lock(&dd->affinity->lock);
+ if (cpu == -1 && set) {
+ spin_lock(&node_affinity.lock);
if (cpumask_equal(&set->mask, &set->used)) {
/*
* We've used up all the CPUs, bump up the generation
@@ -235,7 +373,7 @@ int hfi1_get_irq_affinity(struct hfi1_devdata *dd, struct hfi1_msix_entry *msix)
cpumask_andnot(diff, &set->mask, &set->used);
cpu = cpumask_first(diff);
cpumask_set_cpu(cpu, &set->used);
- spin_unlock(&dd->affinity->lock);
+ spin_unlock(&node_affinity.lock);
}
switch (msix->type) {
@@ -263,43 +401,84 @@ void hfi1_put_irq_affinity(struct hfi1_devdata *dd,
{
struct cpu_mask_set *set = NULL;
struct hfi1_ctxtdata *rcd;
+ struct hfi1_affinity_node *entry;
+
+ spin_lock(&node_affinity.lock);
+ entry = node_affinity_lookup(dd->node);
+ spin_unlock(&node_affinity.lock);
switch (msix->type) {
case IRQ_SDMA:
+ set = &entry->def_intr;
+ break;
case IRQ_GENERAL:
- set = &dd->affinity->def_intr;
+ /* Don't do accounting for general contexts */
break;
case IRQ_RCVCTXT:
rcd = (struct hfi1_ctxtdata *)msix->arg;
- /* only do accounting for non control contexts */
+ /* Don't do accounting for control contexts */
if (rcd->ctxt != HFI1_CTRL_CTXT)
- set = &dd->affinity->rcv_intr;
+ set = &entry->rcv_intr;
break;
default:
return;
}
if (set) {
- spin_lock(&dd->affinity->lock);
+ spin_lock(&node_affinity.lock);
cpumask_andnot(&set->used, &set->used, &msix->mask);
if (cpumask_empty(&set->used) && set->gen) {
set->gen--;
cpumask_copy(&set->used, &set->mask);
}
- spin_unlock(&dd->affinity->lock);
+ spin_unlock(&node_affinity.lock);
}
irq_set_affinity_hint(msix->msix.vector, NULL);
cpumask_clear(&msix->mask);
}
-int hfi1_get_proc_affinity(struct hfi1_devdata *dd, int node)
+/* This should be called with node_affinity.lock held */
+static void find_hw_thread_mask(uint hw_thread_no, cpumask_var_t hw_thread_mask,
+ struct hfi1_affinity_node_list *affinity)
{
- int cpu = -1, ret;
- cpumask_var_t diff, mask, intrs;
+ int possible, curr_cpu, i;
+ uint num_cores_per_socket = node_affinity.num_online_cpus /
+ affinity->num_core_siblings /
+ node_affinity.num_online_nodes;
+
+ cpumask_copy(hw_thread_mask, &affinity->proc.mask);
+ if (affinity->num_core_siblings > 0) {
+ /* Removing other siblings not needed for now */
+ possible = cpumask_weight(hw_thread_mask);
+ curr_cpu = cpumask_first(hw_thread_mask);
+ for (i = 0;
+ i < num_cores_per_socket * node_affinity.num_online_nodes;
+ i++)
+ curr_cpu = cpumask_next(curr_cpu, hw_thread_mask);
+
+ for (; i < possible; i++) {
+ cpumask_clear_cpu(curr_cpu, hw_thread_mask);
+ curr_cpu = cpumask_next(curr_cpu, hw_thread_mask);
+ }
+
+ /* Identifying correct HW threads within physical cores */
+ cpumask_shift_left(hw_thread_mask, hw_thread_mask,
+ num_cores_per_socket *
+ node_affinity.num_online_nodes *
+ hw_thread_no);
+ }
+}
+
+int hfi1_get_proc_affinity(int node)
+{
+ int cpu = -1, ret, i;
+ struct hfi1_affinity_node *entry;
+ cpumask_var_t diff, hw_thread_mask, available_mask, intrs_mask;
const struct cpumask *node_mask,
*proc_mask = tsk_cpus_allowed(current);
- struct cpu_mask_set *set = &dd->affinity->proc;
+ struct hfi1_affinity_node_list *affinity = &node_affinity;
+ struct cpu_mask_set *set = &affinity->proc;
/*
* check whether process/context affinity has already
@@ -325,22 +504,41 @@ int hfi1_get_proc_affinity(struct hfi1_devdata *dd, int node)
/*
* The process does not have a preset CPU affinity so find one to
- * recommend. We prefer CPUs on the same NUMA as the device.
+ * recommend using the following algorithm:
+ *
+ * For each user process that is opening a context on HFI Y:
+ * a) If all cores are filled, reinitialize the bitmask
+ * b) Fill real cores first, then HT cores (First set of HT
+ * cores on all physical cores, then second set of HT core,
+ * and, so on) in the following order:
+ *
+ * 1. Same NUMA node as HFI Y and not running an IRQ
+ * handler
+ * 2. Same NUMA node as HFI Y and running an IRQ handler
+ * 3. Different NUMA node to HFI Y and not running an IRQ
+ * handler
+ * 4. Different NUMA node to HFI Y and running an IRQ
+ * handler
+ * c) Mark core as filled in the bitmask. As user processes are
+ * done, clear cores from the bitmask.
*/
ret = zalloc_cpumask_var(&diff, GFP_KERNEL);
if (!ret)
goto done;
- ret = zalloc_cpumask_var(&mask, GFP_KERNEL);
+ ret = zalloc_cpumask_var(&hw_thread_mask, GFP_KERNEL);
if (!ret)
goto free_diff;
- ret = zalloc_cpumask_var(&intrs, GFP_KERNEL);
+ ret = zalloc_cpumask_var(&available_mask, GFP_KERNEL);
+ if (!ret)
+ goto free_hw_thread_mask;
+ ret = zalloc_cpumask_var(&intrs_mask, GFP_KERNEL);
if (!ret)
- goto free_mask;
+ goto free_available_mask;
- spin_lock(&dd->affinity->lock);
+ spin_lock(&affinity->lock);
/*
- * If we've used all available CPUs, clear the mask and start
+ * If we've used all available HW threads, clear the mask and start
* overloading.
*/
if (cpumask_equal(&set->mask, &set->used)) {
@@ -348,81 +546,198 @@ int hfi1_get_proc_affinity(struct hfi1_devdata *dd, int node)
cpumask_clear(&set->used);
}
- /* CPUs used by interrupt handlers */
- cpumask_copy(intrs, (dd->affinity->def_intr.gen ?
- &dd->affinity->def_intr.mask :
- &dd->affinity->def_intr.used));
- cpumask_or(intrs, intrs, (dd->affinity->rcv_intr.gen ?
- &dd->affinity->rcv_intr.mask :
- &dd->affinity->rcv_intr.used));
+ /*
+ * If NUMA node has CPUs used by interrupt handlers, include them in the
+ * interrupt handler mask.
+ */
+ entry = node_affinity_lookup(node);
+ if (entry) {
+ cpumask_copy(intrs_mask, (entry->def_intr.gen ?
+ &entry->def_intr.mask :
+ &entry->def_intr.used));
+ cpumask_or(intrs_mask, intrs_mask, (entry->rcv_intr.gen ?
+ &entry->rcv_intr.mask :
+ &entry->rcv_intr.used));
+ cpumask_or(intrs_mask, intrs_mask, &entry->general_intr_mask);
+ }
hfi1_cdbg(PROC, "CPUs used by interrupts: %*pbl",
- cpumask_pr_args(intrs));
+ cpumask_pr_args(intrs_mask));
+
+ cpumask_copy(hw_thread_mask, &set->mask);
/*
- * If we don't have a NUMA node requested, preference is towards
- * device NUMA node
+ * If HT cores are enabled, identify which HW threads within the
+ * physical cores should be used.
*/
- if (node == -1)
- node = dd->node;
+ if (affinity->num_core_siblings > 0) {
+ for (i = 0; i < affinity->num_core_siblings; i++) {
+ find_hw_thread_mask(i, hw_thread_mask, affinity);
+
+ /*
+ * If there's at least one available core for this HW
+ * thread number, stop looking for a core.
+ *
+ * diff will always be not empty at least once in this
+ * loop as the used mask gets reset when
+ * (set->mask == set->used) before this loop.
+ */
+ cpumask_andnot(diff, hw_thread_mask, &set->used);
+ if (!cpumask_empty(diff))
+ break;
+ }
+ }
+ hfi1_cdbg(PROC, "Same available HW thread on all physical CPUs: %*pbl",
+ cpumask_pr_args(hw_thread_mask));
+
node_mask = cpumask_of_node(node);
- hfi1_cdbg(PROC, "device on NUMA %u, CPUs %*pbl", node,
+ hfi1_cdbg(PROC, "Device on NUMA %u, CPUs %*pbl", node,
cpumask_pr_args(node_mask));
- /* diff will hold all unused cpus */
- cpumask_andnot(diff, &set->mask, &set->used);
- hfi1_cdbg(PROC, "unused CPUs (all) %*pbl", cpumask_pr_args(diff));
-
- /* get cpumask of available CPUs on preferred NUMA */
- cpumask_and(mask, diff, node_mask);
- hfi1_cdbg(PROC, "available cpus on NUMA %*pbl", cpumask_pr_args(mask));
+ /* Get cpumask of available CPUs on preferred NUMA */
+ cpumask_and(available_mask, hw_thread_mask, node_mask);
+ cpumask_andnot(available_mask, available_mask, &set->used);
+ hfi1_cdbg(PROC, "Available CPUs on NUMA %u: %*pbl", node,
+ cpumask_pr_args(available_mask));
/*
* At first, we don't want to place processes on the same
- * CPUs as interrupt handlers.
+ * CPUs as interrupt handlers. Then, CPUs running interrupt
+ * handlers are used.
+ *
+ * 1) If diff is not empty, then there are CPUs not running
+ * non-interrupt handlers available, so diff gets copied
+ * over to available_mask.
+ * 2) If diff is empty, then all CPUs not running interrupt
+ * handlers are taken, so available_mask contains all
+ * available CPUs running interrupt handlers.
+ * 3) If available_mask is empty, then all CPUs on the
+ * preferred NUMA node are taken, so other NUMA nodes are
+ * used for process assignments using the same method as
+ * the preferred NUMA node.
*/
- cpumask_andnot(diff, mask, intrs);
+ cpumask_andnot(diff, available_mask, intrs_mask);
if (!cpumask_empty(diff))
- cpumask_copy(mask, diff);
+ cpumask_copy(available_mask, diff);
- /*
- * if we don't have a cpu on the preferred NUMA, get
- * the list of the remaining available CPUs
- */
- if (cpumask_empty(mask)) {
- cpumask_andnot(diff, &set->mask, &set->used);
- cpumask_andnot(mask, diff, node_mask);
+ /* If we don't have CPUs on the preferred node, use other NUMA nodes */
+ if (cpumask_empty(available_mask)) {
+ cpumask_andnot(available_mask, hw_thread_mask, &set->used);
+ /* Excluding preferred NUMA cores */
+ cpumask_andnot(available_mask, available_mask, node_mask);
+ hfi1_cdbg(PROC,
+ "Preferred NUMA node cores are taken, cores available in other NUMA nodes: %*pbl",
+ cpumask_pr_args(available_mask));
+
+ /*
+ * At first, we don't want to place processes on the same
+ * CPUs as interrupt handlers.
+ */
+ cpumask_andnot(diff, available_mask, intrs_mask);
+ if (!cpumask_empty(diff))
+ cpumask_copy(available_mask, diff);
}
- hfi1_cdbg(PROC, "possible CPUs for process %*pbl",
- cpumask_pr_args(mask));
+ hfi1_cdbg(PROC, "Possible CPUs for process: %*pbl",
+ cpumask_pr_args(available_mask));
- cpu = cpumask_first(mask);
+ cpu = cpumask_first(available_mask);
if (cpu >= nr_cpu_ids) /* empty */
cpu = -1;
else
cpumask_set_cpu(cpu, &set->used);
- spin_unlock(&dd->affinity->lock);
-
- free_cpumask_var(intrs);
-free_mask:
- free_cpumask_var(mask);
+ spin_unlock(&affinity->lock);
+ hfi1_cdbg(PROC, "Process assigned to CPU %d", cpu);
+
+ free_cpumask_var(intrs_mask);
+free_available_mask:
+ free_cpumask_var(available_mask);
+free_hw_thread_mask:
+ free_cpumask_var(hw_thread_mask);
free_diff:
free_cpumask_var(diff);
done:
return cpu;
}
-void hfi1_put_proc_affinity(struct hfi1_devdata *dd, int cpu)
+void hfi1_put_proc_affinity(int cpu)
{
- struct cpu_mask_set *set = &dd->affinity->proc;
+ struct hfi1_affinity_node_list *affinity = &node_affinity;
+ struct cpu_mask_set *set = &affinity->proc;
if (cpu < 0)
return;
- spin_lock(&dd->affinity->lock);
+ spin_lock(&affinity->lock);
cpumask_clear_cpu(cpu, &set->used);
+ hfi1_cdbg(PROC, "Returning CPU %d for future process assignment", cpu);
if (cpumask_empty(&set->used) && set->gen) {
set->gen--;
cpumask_copy(&set->used, &set->mask);
}
- spin_unlock(&dd->affinity->lock);
+ spin_unlock(&affinity->lock);
}
+/* Prevents concurrent reads and writes of the sdma_affinity attrib */
+static DEFINE_MUTEX(sdma_affinity_mutex);
+
+int hfi1_set_sdma_affinity(struct hfi1_devdata *dd, const char *buf,
+ size_t count)
+{
+ struct hfi1_affinity_node *entry;
+ struct cpumask mask;
+ int ret, i;
+
+ spin_lock(&node_affinity.lock);
+ entry = node_affinity_lookup(dd->node);
+ spin_unlock(&node_affinity.lock);
+
+ if (!entry)
+ return -EINVAL;
+
+ ret = cpulist_parse(buf, &mask);
+ if (ret)
+ return ret;
+
+ if (!cpumask_subset(&mask, cpu_online_mask) || cpumask_empty(&mask)) {
+ dd_dev_warn(dd, "Invalid CPU mask\n");
+ return -EINVAL;
+ }
+
+ mutex_lock(&sdma_affinity_mutex);
+ /* reset the SDMA interrupt affinity details */
+ init_cpu_mask_set(&entry->def_intr);
+ cpumask_copy(&entry->def_intr.mask, &mask);
+ /*
+ * Reassign the affinity for each SDMA interrupt.
+ */
+ for (i = 0; i < dd->num_msix_entries; i++) {
+ struct hfi1_msix_entry *msix;
+
+ msix = &dd->msix_entries[i];
+ if (msix->type != IRQ_SDMA)
+ continue;
+
+ ret = hfi1_get_irq_affinity(dd, msix);
+
+ if (ret)
+ break;
+ }
+
+ mutex_unlock(&sdma_affinity_mutex);
+ return ret ? ret : strnlen(buf, PAGE_SIZE);
+}
+
+int hfi1_get_sdma_affinity(struct hfi1_devdata *dd, char *buf)
+{
+ struct hfi1_affinity_node *entry;
+
+ spin_lock(&node_affinity.lock);
+ entry = node_affinity_lookup(dd->node);
+ spin_unlock(&node_affinity.lock);
+
+ if (!entry)
+ return -EINVAL;
+
+ mutex_lock(&sdma_affinity_mutex);
+ cpumap_print_to_pagebuf(true, buf, &entry->def_intr.mask);
+ mutex_unlock(&sdma_affinity_mutex);
+ return strnlen(buf, PAGE_SIZE);
+}
diff --git a/drivers/infiniband/hw/hfi1/affinity.h b/drivers/infiniband/hw/hfi1/affinity.h
index 20f52fe74091..8879cf7a8cac 100644
--- a/drivers/infiniband/hw/hfi1/affinity.h
+++ b/drivers/infiniband/hw/hfi1/affinity.h
@@ -73,7 +73,6 @@ struct cpu_mask_set {
struct hfi1_affinity {
struct cpu_mask_set def_intr;
struct cpu_mask_set rcv_intr;
- struct cpu_mask_set proc;
struct cpumask real_cpu_mask;
/* spin lock to protect affinity struct */
spinlock_t lock;
@@ -82,11 +81,9 @@ struct hfi1_affinity {
struct hfi1_msix_entry;
/* Initialize non-HT cpu cores mask */
-int init_real_cpu_mask(struct hfi1_devdata *);
+void init_real_cpu_mask(void);
/* Initialize driver affinity data */
-void hfi1_dev_affinity_init(struct hfi1_devdata *);
-/* Free driver affinity data */
-void hfi1_dev_affinity_free(struct hfi1_devdata *);
+int hfi1_dev_affinity_init(struct hfi1_devdata *);
/*
* Set IRQ affinity to a CPU. The function will determine the
* CPU and set the affinity to it.
@@ -101,8 +98,35 @@ void hfi1_put_irq_affinity(struct hfi1_devdata *, struct hfi1_msix_entry *);
* Determine a CPU affinity for a user process, if the process does not
* have an affinity set yet.
*/
-int hfi1_get_proc_affinity(struct hfi1_devdata *, int);
+int hfi1_get_proc_affinity(int);
/* Release a CPU used by a user process. */
-void hfi1_put_proc_affinity(struct hfi1_devdata *, int);
+void hfi1_put_proc_affinity(int);
+
+int hfi1_get_sdma_affinity(struct hfi1_devdata *dd, char *buf);
+int hfi1_set_sdma_affinity(struct hfi1_devdata *dd, const char *buf,
+ size_t count);
+
+struct hfi1_affinity_node {
+ int node;
+ struct cpu_mask_set def_intr;
+ struct cpu_mask_set rcv_intr;
+ struct cpumask general_intr_mask;
+ struct list_head list;
+};
+
+struct hfi1_affinity_node_list {
+ struct list_head list;
+ struct cpumask real_cpu_mask;
+ struct cpu_mask_set proc;
+ int num_core_siblings;
+ int num_online_nodes;
+ int num_online_cpus;
+ /* protect affinity node list */
+ spinlock_t lock;
+};
+
+int node_affinity_init(void);
+void node_affinity_destroy(void);
+extern struct hfi1_affinity_node_list node_affinity;
#endif /* _HFI1_AFFINITY_H */
diff --git a/drivers/infiniband/hw/hfi1/chip.c b/drivers/infiniband/hw/hfi1/chip.c
index dad4d0ebbdff..b32638d58ae8 100644
--- a/drivers/infiniband/hw/hfi1/chip.c
+++ b/drivers/infiniband/hw/hfi1/chip.c
@@ -63,6 +63,7 @@
#include "efivar.h"
#include "platform.h"
#include "aspm.h"
+#include "affinity.h"
#define NUM_IB_PORTS 1
@@ -121,6 +122,7 @@ struct flag_table {
#define SEC_SC_HALTED 0x4 /* per-context only */
#define SEC_SPC_FREEZE 0x8 /* per-HFI only */
+#define DEFAULT_KRCVQS 2
#define MIN_KERNEL_KCTXTS 2
#define FIRST_KERNEL_KCTXT 1
/* sizes for both the QP and RSM map tables */
@@ -238,6 +240,9 @@ struct flag_table {
/* all CceStatus sub-block RXE pause bits */
#define ALL_RXE_PAUSE CCE_STATUS_RXE_PAUSED_SMASK
+#define CNTR_MAX 0xFFFFFFFFFFFFFFFFULL
+#define CNTR_32BIT_MAX 0x00000000FFFFFFFF
+
/*
* CCE Error flags.
*/
@@ -3947,6 +3952,28 @@ static u64 access_sdma_wrong_dw_err_cnt(const struct cntr_entry *entry,
return dd->sw_send_dma_eng_err_status_cnt[0];
}
+static u64 access_dc_rcv_err_cnt(const struct cntr_entry *entry,
+ void *context, int vl, int mode,
+ u64 data)
+{
+ struct hfi1_devdata *dd = (struct hfi1_devdata *)context;
+
+ u64 val = 0;
+ u64 csr = entry->csr;
+
+ val = read_write_csr(dd, csr, mode, data);
+ if (mode == CNTR_MODE_R) {
+ val = val > CNTR_MAX - dd->sw_rcv_bypass_packet_errors ?
+ CNTR_MAX : val + dd->sw_rcv_bypass_packet_errors;
+ } else if (mode == CNTR_MODE_W) {
+ dd->sw_rcv_bypass_packet_errors = 0;
+ } else {
+ dd_dev_err(dd, "Invalid cntr register access mode");
+ return 0;
+ }
+ return val;
+}
+
#define def_access_sw_cpu(cntr) \
static u64 access_sw_cpu_##cntr(const struct cntr_entry *entry, \
void *context, int vl, int mode, u64 data) \
@@ -4020,7 +4047,8 @@ static struct cntr_entry dev_cntrs[DEV_CNTR_LAST] = {
CCE_SEND_CREDIT_INT_CNT, CNTR_NORMAL),
[C_DC_UNC_ERR] = DC_PERF_CNTR(DcUnctblErr, DCC_ERR_UNCORRECTABLE_CNT,
CNTR_SYNTH),
-[C_DC_RCV_ERR] = DC_PERF_CNTR(DcRecvErr, DCC_ERR_PORTRCV_ERR_CNT, CNTR_SYNTH),
+[C_DC_RCV_ERR] = CNTR_ELEM("DcRecvErr", DCC_ERR_PORTRCV_ERR_CNT, 0, CNTR_SYNTH,
+ access_dc_rcv_err_cnt),
[C_DC_FM_CFG_ERR] = DC_PERF_CNTR(DcFmCfgErr, DCC_ERR_FMCONFIG_ERR_CNT,
CNTR_SYNTH),
[C_DC_RMT_PHY_ERR] = DC_PERF_CNTR(DcRmtPhyErr, DCC_ERR_RCVREMOTE_PHY_ERR_CNT,
@@ -8798,30 +8826,6 @@ static int write_tx_settings(struct hfi1_devdata *dd,
return load_8051_config(dd, TX_SETTINGS, GENERAL_CONFIG, frame);
}
-static void check_fabric_firmware_versions(struct hfi1_devdata *dd)
-{
- u32 frame, version, prod_id;
- int ret, lane;
-
- /* 4 lanes */
- for (lane = 0; lane < 4; lane++) {
- ret = read_8051_config(dd, SPICO_FW_VERSION, lane, &frame);
- if (ret) {
- dd_dev_err(dd,
- "Unable to read lane %d firmware details\n",
- lane);
- continue;
- }
- version = (frame >> SPICO_ROM_VERSION_SHIFT)
- & SPICO_ROM_VERSION_MASK;
- prod_id = (frame >> SPICO_ROM_PROD_ID_SHIFT)
- & SPICO_ROM_PROD_ID_MASK;
- dd_dev_info(dd,
- "Lane %d firmware: version 0x%04x, prod_id 0x%04x\n",
- lane, version, prod_id);
- }
-}
-
/*
* Read an idle LCB message.
*
@@ -9187,17 +9191,24 @@ static void wait_for_qsfp_init(struct hfi1_pportdata *ppd)
unsigned long timeout;
/*
- * Check for QSFP interrupt for t_init (SFF 8679)
+ * Some QSFP cables have a quirk that asserts the IntN line as a side
+ * effect of power up on plug-in. We ignore this false positive
+ * interrupt until the module has finished powering up by waiting for
+ * a minimum timeout of the module inrush initialization time of
+ * 500 ms (SFF 8679 Table 5-6) to ensure the voltage rails in the
+ * module have stabilized.
+ */
+ msleep(500);
+
+ /*
+ * Check for QSFP interrupt for t_init (SFF 8679 Table 8-1)
*/
timeout = jiffies + msecs_to_jiffies(2000);
while (1) {
mask = read_csr(dd, dd->hfi1_id ?
ASIC_QSFP2_IN : ASIC_QSFP1_IN);
- if (!(mask & QSFP_HFI0_INT_N)) {
- write_csr(dd, dd->hfi1_id ? ASIC_QSFP2_CLEAR :
- ASIC_QSFP1_CLEAR, QSFP_HFI0_INT_N);
+ if (!(mask & QSFP_HFI0_INT_N))
break;
- }
if (time_after(jiffies, timeout)) {
dd_dev_info(dd, "%s: No IntN detected, reset complete\n",
__func__);
@@ -9213,10 +9224,17 @@ static void set_qsfp_int_n(struct hfi1_pportdata *ppd, u8 enable)
u64 mask;
mask = read_csr(dd, dd->hfi1_id ? ASIC_QSFP2_MASK : ASIC_QSFP1_MASK);
- if (enable)
+ if (enable) {
+ /*
+ * Clear the status register to avoid an immediate interrupt
+ * when we re-enable the IntN pin
+ */
+ write_csr(dd, dd->hfi1_id ? ASIC_QSFP2_CLEAR : ASIC_QSFP1_CLEAR,
+ QSFP_HFI0_INT_N);
mask |= (u64)QSFP_HFI0_INT_N;
- else
+ } else {
mask &= ~(u64)QSFP_HFI0_INT_N;
+ }
write_csr(dd, dd->hfi1_id ? ASIC_QSFP2_MASK : ASIC_QSFP1_MASK, mask);
}
@@ -9630,14 +9648,6 @@ void hfi1_clear_tids(struct hfi1_ctxtdata *rcd)
hfi1_put_tid(dd, i, PT_INVALID, 0, 0);
}
-int hfi1_get_base_kinfo(struct hfi1_ctxtdata *rcd,
- struct hfi1_ctxt_info *kinfo)
-{
- kinfo->runtime_flags = (HFI1_MISC_GET() << HFI1_CAP_USER_SHIFT) |
- HFI1_CAP_UGET(MASK) | HFI1_CAP_KGET(K2U);
- return 0;
-}
-
struct hfi1_message_header *hfi1_get_msgheader(
struct hfi1_devdata *dd, __le32 *rhf_addr)
{
@@ -9890,6 +9900,131 @@ static int wait_phy_linkstate(struct hfi1_devdata *dd, u32 state, u32 msecs)
return 0;
}
+static const char *state_completed_string(u32 completed)
+{
+ static const char * const state_completed[] = {
+ "EstablishComm",
+ "OptimizeEQ",
+ "VerifyCap"
+ };
+
+ if (completed < ARRAY_SIZE(state_completed))
+ return state_completed[completed];
+
+ return "unknown";
+}
+
+static const char all_lanes_dead_timeout_expired[] =
+ "All lanes were inactive – was the interconnect media removed?";
+static const char tx_out_of_policy[] =
+ "Passing lanes on local port do not meet the local link width policy";
+static const char no_state_complete[] =
+ "State timeout occurred before link partner completed the state";
+static const char * const state_complete_reasons[] = {
+ [0x00] = "Reason unknown",
+ [0x01] = "Link was halted by driver, refer to LinkDownReason",
+ [0x02] = "Link partner reported failure",
+ [0x10] = "Unable to achieve frame sync on any lane",
+ [0x11] =
+ "Unable to find a common bit rate with the link partner",
+ [0x12] =
+ "Unable to achieve frame sync on sufficient lanes to meet the local link width policy",
+ [0x13] =
+ "Unable to identify preset equalization on sufficient lanes to meet the local link width policy",
+ [0x14] = no_state_complete,
+ [0x15] =
+ "State timeout occurred before link partner identified equalization presets",
+ [0x16] =
+ "Link partner completed the EstablishComm state, but the passing lanes do not meet the local link width policy",
+ [0x17] = tx_out_of_policy,
+ [0x20] = all_lanes_dead_timeout_expired,
+ [0x21] =
+ "Unable to achieve acceptable BER on sufficient lanes to meet the local link width policy",
+ [0x22] = no_state_complete,
+ [0x23] =
+ "Link partner completed the OptimizeEq state, but the passing lanes do not meet the local link width policy",
+ [0x24] = tx_out_of_policy,
+ [0x30] = all_lanes_dead_timeout_expired,
+ [0x31] =
+ "State timeout occurred waiting for host to process received frames",
+ [0x32] = no_state_complete,
+ [0x33] =
+ "Link partner completed the VerifyCap state, but the passing lanes do not meet the local link width policy",
+ [0x34] = tx_out_of_policy,
+};
+
+static const char *state_complete_reason_code_string(struct hfi1_pportdata *ppd,
+ u32 code)
+{
+ const char *str = NULL;
+
+ if (code < ARRAY_SIZE(state_complete_reasons))
+ str = state_complete_reasons[code];
+
+ if (str)
+ return str;
+ return "Reserved";
+}
+
+/* describe the given last state complete frame */
+static void decode_state_complete(struct hfi1_pportdata *ppd, u32 frame,
+ const char *prefix)
+{
+ struct hfi1_devdata *dd = ppd->dd;
+ u32 success;
+ u32 state;
+ u32 reason;
+ u32 lanes;
+
+ /*
+ * Decode frame:
+ * [ 0: 0] - success
+ * [ 3: 1] - state
+ * [ 7: 4] - next state timeout
+ * [15: 8] - reason code
+ * [31:16] - lanes
+ */
+ success = frame & 0x1;
+ state = (frame >> 1) & 0x7;
+ reason = (frame >> 8) & 0xff;
+ lanes = (frame >> 16) & 0xffff;
+
+ dd_dev_err(dd, "Last %s LNI state complete frame 0x%08x:\n",
+ prefix, frame);
+ dd_dev_err(dd, " last reported state state: %s (0x%x)\n",
+ state_completed_string(state), state);
+ dd_dev_err(dd, " state successfully completed: %s\n",
+ success ? "yes" : "no");
+ dd_dev_err(dd, " fail reason 0x%x: %s\n",
+ reason, state_complete_reason_code_string(ppd, reason));
+ dd_dev_err(dd, " passing lane mask: 0x%x", lanes);
+}
+
+/*
+ * Read the last state complete frames and explain them. This routine
+ * expects to be called if the link went down during link negotiation
+ * and initialization (LNI). That is, anywhere between polling and link up.
+ */
+static void check_lni_states(struct hfi1_pportdata *ppd)
+{
+ u32 last_local_state;
+ u32 last_remote_state;
+
+ read_last_local_state(ppd->dd, &last_local_state);
+ read_last_remote_state(ppd->dd, &last_remote_state);
+
+ /*
+ * Don't report anything if there is nothing to report. A value of
+ * 0 means the link was taken down while polling and there was no
+ * training in-process.
+ */
+ if (last_local_state == 0 && last_remote_state == 0)
+ return;
+
+ decode_state_complete(ppd, last_local_state, "transmitted");
+ decode_state_complete(ppd, last_remote_state, "received");
+}
+
/*
* Helper for set_link_state(). Do not call except from that routine.
* Expects ppd->hls_mutex to be held.
@@ -9902,8 +10037,6 @@ static int goto_offline(struct hfi1_pportdata *ppd, u8 rem_reason)
{
struct hfi1_devdata *dd = ppd->dd;
u32 pstate, previous_state;
- u32 last_local_state;
- u32 last_remote_state;
int ret;
int do_transition;
int do_wait;
@@ -10003,12 +10136,7 @@ static int goto_offline(struct hfi1_pportdata *ppd, u8 rem_reason)
} else if (previous_state
& (HLS_DN_POLL | HLS_VERIFY_CAP | HLS_GOING_UP)) {
/* went down while attempting link up */
- /* byte 1 of last_*_state is the failure reason */
- read_last_local_state(dd, &last_local_state);
- read_last_remote_state(dd, &last_remote_state);
- dd_dev_err(dd,
- "LNI failure last states: local 0x%08x, remote 0x%08x\n",
- last_local_state, last_remote_state);
+ check_lni_states(ppd);
}
/* the active link width (downgrade) is 0 on link down */
@@ -11668,9 +11796,6 @@ static void free_cntrs(struct hfi1_devdata *dd)
dd->cntrnames = NULL;
}
-#define CNTR_MAX 0xFFFFFFFFFFFFFFFFULL
-#define CNTR_32BIT_MAX 0x00000000FFFFFFFF
-
static u64 read_dev_port_cntr(struct hfi1_devdata *dd, struct cntr_entry *entry,
u64 *psval, void *context, int vl)
{
@@ -12325,37 +12450,6 @@ u8 hfi1_ibphys_portstate(struct hfi1_pportdata *ppd)
return ib_pstate;
}
-/*
- * Read/modify/write ASIC_QSFP register bits as selected by mask
- * data: 0 or 1 in the positions depending on what needs to be written
- * dir: 0 for read, 1 for write
- * mask: select by setting
- * I2CCLK (bit 0)
- * I2CDATA (bit 1)
- */
-u64 hfi1_gpio_mod(struct hfi1_devdata *dd, u32 target, u32 data, u32 dir,
- u32 mask)
-{
- u64 qsfp_oe, target_oe;
-
- target_oe = target ? ASIC_QSFP2_OE : ASIC_QSFP1_OE;
- if (mask) {
- /* We are writing register bits, so lock access */
- dir &= mask;
- data &= mask;
-
- qsfp_oe = read_csr(dd, target_oe);
- qsfp_oe = (qsfp_oe & ~(u64)mask) | (u64)dir;
- write_csr(dd, target_oe, qsfp_oe);
- }
- /* We are exclusively reading bits here, but it is unlikely
- * we'll get valid data when we set the direction of the pin
- * in the same call, so read should call this function again
- * to get valid data
- */
- return read_csr(dd, target ? ASIC_QSFP2_IN : ASIC_QSFP1_IN);
-}
-
#define CLEAR_STATIC_RATE_CONTROL_SMASK(r) \
(r &= ~SEND_CTXT_CHECK_ENABLE_DISALLOW_PBC_STATIC_RATE_CONTROL_SMASK)
@@ -12780,7 +12874,6 @@ static int set_up_context_variables(struct hfi1_devdata *dd)
/*
* Kernel receive contexts:
- * - min of 2 or 1 context/numa (excluding control context)
* - Context 0 - control context (VL15/multicast/error)
* - Context 1 - first kernel context
* - Context 2 - second kernel context
@@ -12794,9 +12887,7 @@ static int set_up_context_variables(struct hfi1_devdata *dd)
*/
num_kernel_contexts = n_krcvqs + 1;
else
- num_kernel_contexts = num_online_nodes() + 1;
- num_kernel_contexts =
- max_t(int, MIN_KERNEL_KCTXTS, num_kernel_contexts);
+ num_kernel_contexts = DEFAULT_KRCVQS + 1;
/*
* Every kernel receive context needs an ACK send context.
* one send context is allocated for each VL{0-7} and VL15
@@ -12815,7 +12906,7 @@ static int set_up_context_variables(struct hfi1_devdata *dd)
*/
if (num_user_contexts < 0)
num_user_contexts =
- cpumask_weight(&dd->affinity->real_cpu_mask);
+ cpumask_weight(&node_affinity.real_cpu_mask);
total_contexts = num_kernel_contexts + num_user_contexts;
@@ -14141,6 +14232,11 @@ static int init_asic_data(struct hfi1_devdata *dd)
}
dd->asic_data->dds[dd->hfi1_id] = dd; /* self back-pointer */
spin_unlock_irqrestore(&hfi1_devs_lock, flags);
+
+ /* first one through - set up i2c devices */
+ if (!peer)
+ ret = set_up_i2c(dd, dd->asic_data);
+
return ret;
}
@@ -14445,19 +14541,6 @@ struct hfi1_devdata *hfi1_init_dd(struct pci_dev *pdev,
(dd->revision >> CCE_REVISION_SW_SHIFT)
& CCE_REVISION_SW_MASK);
- /*
- * The real cpu mask is part of the affinity struct but has to be
- * initialized earlier than the rest of the affinity struct because it
- * is needed to calculate the number of user contexts in
- * set_up_context_variables(). However, hfi1_dev_affinity_init(),
- * which initializes the rest of the affinity struct members,
- * depends on set_up_context_variables() for the number of kernel
- * contexts, so it cannot be called before set_up_context_variables().
- */
- ret = init_real_cpu_mask(dd);
- if (ret)
- goto bail_cleanup;
-
ret = set_up_context_variables(dd);
if (ret)
goto bail_cleanup;
@@ -14471,7 +14554,9 @@ struct hfi1_devdata *hfi1_init_dd(struct pci_dev *pdev,
/* set up KDETH QP prefix in both RX and TX CSRs */
init_kdeth_qp(dd);
- hfi1_dev_affinity_init(dd);
+ ret = hfi1_dev_affinity_init(dd);
+ if (ret)
+ goto bail_cleanup;
/* send contexts must be set up before receive contexts */
ret = init_send_contexts(dd);
@@ -14508,8 +14593,14 @@ struct hfi1_devdata *hfi1_init_dd(struct pci_dev *pdev,
/* set up LCB access - must be after set_up_interrupts() */
init_lcb_access(dd);
+ /*
+ * Serial number is created from the base guid:
+ * [27:24] = base guid [38:35]
+ * [23: 0] = base guid [23: 0]
+ */
snprintf(dd->serial, SERIAL_MAX, "0x%08llx\n",
- dd->base_guid & 0xFFFFFF);
+ (dd->base_guid & 0xFFFFFF) |
+ ((dd->base_guid >> 11) & 0xF000000));
dd->oui1 = dd->base_guid >> 56 & 0xFF;
dd->oui2 = dd->base_guid >> 48 & 0xFF;
@@ -14518,7 +14609,6 @@ struct hfi1_devdata *hfi1_init_dd(struct pci_dev *pdev,
ret = load_firmware(dd); /* asymmetric with dispose_firmware() */
if (ret)
goto bail_clear_intr;
- check_fabric_firmware_versions(dd);
thermal_init(dd);
diff --git a/drivers/infiniband/hw/hfi1/chip.h b/drivers/infiniband/hw/hfi1/chip.h
index 66a327978739..ed11107c50fe 100644
--- a/drivers/infiniband/hw/hfi1/chip.h
+++ b/drivers/infiniband/hw/hfi1/chip.h
@@ -640,6 +640,7 @@ extern uint platform_config_load;
/* SBus commands */
#define RESET_SBUS_RECEIVER 0x20
#define WRITE_SBUS_RECEIVER 0x21
+#define READ_SBUS_RECEIVER 0x22
void sbus_request(struct hfi1_devdata *dd,
u8 receiver_addr, u8 data_addr, u8 command, u32 data_in);
int sbus_request_slow(struct hfi1_devdata *dd,
@@ -1336,10 +1337,6 @@ void hfi1_start_cleanup(struct hfi1_devdata *dd);
void hfi1_clear_tids(struct hfi1_ctxtdata *rcd);
struct hfi1_message_header *hfi1_get_msgheader(
struct hfi1_devdata *dd, __le32 *rhf_addr);
-int hfi1_get_base_kinfo(struct hfi1_ctxtdata *rcd,
- struct hfi1_ctxt_info *kinfo);
-u64 hfi1_gpio_mod(struct hfi1_devdata *dd, u32 target, u32 data, u32 dir,
- u32 mask);
int hfi1_init_ctxt(struct send_context *sc);
void hfi1_put_tid(struct hfi1_devdata *dd, u32 index,
u32 type, unsigned long pa, u16 order);
diff --git a/drivers/infiniband/hw/hfi1/chip_registers.h b/drivers/infiniband/hw/hfi1/chip_registers.h
index 8744de6667c2..5b9993899789 100644
--- a/drivers/infiniband/hw/hfi1/chip_registers.h
+++ b/drivers/infiniband/hw/hfi1/chip_registers.h
@@ -471,6 +471,10 @@
#define ASIC_STS_SBUS_RESULT (ASIC + 0x000000000010)
#define ASIC_STS_SBUS_RESULT_DONE_SMASK 0x1ull
#define ASIC_STS_SBUS_RESULT_RCV_DATA_VALID_SMASK 0x2ull
+#define ASIC_STS_SBUS_RESULT_RESULT_CODE_SHIFT 2
+#define ASIC_STS_SBUS_RESULT_RESULT_CODE_MASK 0x7ull
+#define ASIC_STS_SBUS_RESULT_DATA_OUT_SHIFT 32
+#define ASIC_STS_SBUS_RESULT_DATA_OUT_MASK 0xFFFFFFFFull
#define ASIC_STS_THERM (ASIC + 0x000000000058)
#define ASIC_STS_THERM_CRIT_TEMP_MASK 0x7FFull
#define ASIC_STS_THERM_CRIT_TEMP_SHIFT 18
diff --git a/drivers/infiniband/hw/hfi1/driver.c b/drivers/infiniband/hw/hfi1/driver.c
index c75b0ae688f8..8246dc7d0573 100644
--- a/drivers/infiniband/hw/hfi1/driver.c
+++ b/drivers/infiniband/hw/hfi1/driver.c
@@ -392,9 +392,7 @@ static void rcv_hdrerr(struct hfi1_ctxtdata *rcd, struct hfi1_pportdata *ppd,
u16 rlid;
u8 svc_type, sl, sc5;
- sc5 = (be16_to_cpu(rhdr->lrh[0]) >> 12) & 0xf;
- if (rhf_dc_info(packet->rhf))
- sc5 |= 0x10;
+ sc5 = hdr2sc(rhdr, packet->rhf);
sl = ibp->sc_to_sl[sc5];
lqpn = be32_to_cpu(bth[1]) & RVT_QPN_MASK;
@@ -450,14 +448,20 @@ static inline void init_packet(struct hfi1_ctxtdata *rcd,
packet->rcv_flags = 0;
}
-static void process_ecn(struct rvt_qp *qp, struct hfi1_ib_header *hdr,
- struct hfi1_other_headers *ohdr,
- u64 rhf, u32 bth1, struct ib_grh *grh)
+void hfi1_process_ecn_slowpath(struct rvt_qp *qp, struct hfi1_packet *pkt,
+ bool do_cnp)
{
struct hfi1_ibport *ibp = to_iport(qp->ibqp.device, qp->port_num);
- u32 rqpn = 0;
- u16 rlid;
- u8 sc5, svc_type;
+ struct hfi1_ib_header *hdr = pkt->hdr;
+ struct hfi1_other_headers *ohdr = pkt->ohdr;
+ struct ib_grh *grh = NULL;
+ u32 rqpn = 0, bth1;
+ u16 rlid, dlid = be16_to_cpu(hdr->lrh[1]);
+ u8 sc, svc_type;
+ bool is_mcast = false;
+
+ if (pkt->rcv_flags & HFI1_HAS_GRH)
+ grh = &hdr->u.l.grh;
switch (qp->ibqp.qp_type) {
case IB_QPT_SMI:
@@ -466,6 +470,8 @@ static void process_ecn(struct rvt_qp *qp, struct hfi1_ib_header *hdr,
rlid = be16_to_cpu(hdr->lrh[3]);
rqpn = be32_to_cpu(ohdr->u.ud.deth[1]) & RVT_QPN_MASK;
svc_type = IB_CC_SVCTYPE_UD;
+ is_mcast = (dlid > be16_to_cpu(IB_MULTICAST_LID_BASE)) &&
+ (dlid != be16_to_cpu(IB_LID_PERMISSIVE));
break;
case IB_QPT_UC:
rlid = qp->remote_ah_attr.dlid;
@@ -481,24 +487,23 @@ static void process_ecn(struct rvt_qp *qp, struct hfi1_ib_header *hdr,
return;
}
- sc5 = (be16_to_cpu(hdr->lrh[0]) >> 12) & 0xf;
- if (rhf_dc_info(rhf))
- sc5 |= 0x10;
+ sc = hdr2sc((struct hfi1_message_header *)hdr, pkt->rhf);
- if (bth1 & HFI1_FECN_SMASK) {
+ bth1 = be32_to_cpu(ohdr->bth[1]);
+ if (do_cnp && (bth1 & HFI1_FECN_SMASK)) {
u16 pkey = (u16)be32_to_cpu(ohdr->bth[0]);
- u16 dlid = be16_to_cpu(hdr->lrh[1]);
- return_cnp(ibp, qp, rqpn, pkey, dlid, rlid, sc5, grh);
+ return_cnp(ibp, qp, rqpn, pkey, dlid, rlid, sc, grh);
}
- if (bth1 & HFI1_BECN_SMASK) {
+ if (!is_mcast && (bth1 & HFI1_BECN_SMASK)) {
struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
u32 lqpn = bth1 & RVT_QPN_MASK;
- u8 sl = ibp->sc_to_sl[sc5];
+ u8 sl = ibp->sc_to_sl[sc];
process_becn(ppd, sl, rlid, lqpn, rqpn, svc_type);
}
+
}
struct ps_mdata {
@@ -596,7 +601,6 @@ static void __prescan_rxq(struct hfi1_packet *packet)
struct rvt_qp *qp;
struct hfi1_ib_header *hdr;
struct hfi1_other_headers *ohdr;
- struct ib_grh *grh = NULL;
struct rvt_dev_info *rdi = &dd->verbs_dev.rdi;
u64 rhf = rhf_to_cpu(rhf_addr);
u32 etype = rhf_rcv_type(rhf), qpn, bth1;
@@ -616,14 +620,13 @@ static void __prescan_rxq(struct hfi1_packet *packet)
hfi1_get_msgheader(dd, rhf_addr);
lnh = be16_to_cpu(hdr->lrh[0]) & 3;
- if (lnh == HFI1_LRH_BTH) {
+ if (lnh == HFI1_LRH_BTH)
ohdr = &hdr->u.oth;
- } else if (lnh == HFI1_LRH_GRH) {
+ else if (lnh == HFI1_LRH_GRH)
ohdr = &hdr->u.l.oth;
- grh = &hdr->u.l.grh;
- } else {
+ else
goto next; /* just in case */
- }
+
bth1 = be32_to_cpu(ohdr->bth[1]);
is_ecn = !!(bth1 & (HFI1_FECN_SMASK | HFI1_BECN_SMASK));
@@ -639,7 +642,7 @@ static void __prescan_rxq(struct hfi1_packet *packet)
goto next;
}
- process_ecn(qp, hdr, ohdr, rhf, bth1, grh);
+ process_ecn(qp, packet, true);
rcu_read_unlock();
/* turn off BECN, FECN */
@@ -1362,6 +1365,7 @@ int process_receive_bypass(struct hfi1_packet *packet)
dd_dev_err(packet->rcd->dd,
"Bypass packets are not supported in normal operation. Dropping\n");
+ incr_cntr64(&packet->rcd->dd->sw_rcv_bypass_packet_errors);
return RHF_RCV_CONTINUE;
}
diff --git a/drivers/infiniband/hw/hfi1/file_ops.c b/drivers/infiniband/hw/hfi1/file_ops.c
index c702a009608f..1ecbec192358 100644
--- a/drivers/infiniband/hw/hfi1/file_ops.c
+++ b/drivers/infiniband/hw/hfi1/file_ops.c
@@ -168,6 +168,7 @@ static inline int is_valid_mmap(u64 token)
static int hfi1_file_open(struct inode *inode, struct file *fp)
{
+ struct hfi1_filedata *fd;
struct hfi1_devdata *dd = container_of(inode->i_cdev,
struct hfi1_devdata,
user_cdev);
@@ -176,10 +177,17 @@ static int hfi1_file_open(struct inode *inode, struct file *fp)
kobject_get(&dd->kobj);
/* The real work is performed later in assign_ctxt() */
- fp->private_data = kzalloc(sizeof(struct hfi1_filedata), GFP_KERNEL);
- if (fp->private_data) /* no cpu affinity by default */
- ((struct hfi1_filedata *)fp->private_data)->rec_cpu_num = -1;
- return fp->private_data ? 0 : -ENOMEM;
+
+ fd = kzalloc(sizeof(*fd), GFP_KERNEL);
+
+ if (fd) {
+ fd->rec_cpu_num = -1; /* no cpu affinity by default */
+ fd->mm = current->mm;
+ }
+
+ fp->private_data = fd;
+
+ return fd ? 0 : -ENOMEM;
}
static long hfi1_file_ioctl(struct file *fp, unsigned int cmd,
@@ -228,7 +236,7 @@ static long hfi1_file_ioctl(struct file *fp, unsigned int cmd,
sizeof(struct hfi1_base_info));
break;
case HFI1_IOCTL_CREDIT_UPD:
- if (uctxt && uctxt->sc)
+ if (uctxt)
sc_return_credits(uctxt->sc);
break;
@@ -392,41 +400,38 @@ static ssize_t hfi1_write_iter(struct kiocb *kiocb, struct iov_iter *from)
struct hfi1_filedata *fd = kiocb->ki_filp->private_data;
struct hfi1_user_sdma_pkt_q *pq = fd->pq;
struct hfi1_user_sdma_comp_q *cq = fd->cq;
- int ret = 0, done = 0, reqs = 0;
+ int done = 0, reqs = 0;
unsigned long dim = from->nr_segs;
- if (!cq || !pq) {
- ret = -EIO;
- goto done;
- }
+ if (!cq || !pq)
+ return -EIO;
- if (!iter_is_iovec(from) || !dim) {
- ret = -EINVAL;
- goto done;
- }
+ if (!iter_is_iovec(from) || !dim)
+ return -EINVAL;
hfi1_cdbg(SDMA, "SDMA request from %u:%u (%lu)",
fd->uctxt->ctxt, fd->subctxt, dim);
- if (atomic_read(&pq->n_reqs) == pq->n_max_reqs) {
- ret = -ENOSPC;
- goto done;
- }
+ if (atomic_read(&pq->n_reqs) == pq->n_max_reqs)
+ return -ENOSPC;
while (dim) {
+ int ret;
unsigned long count = 0;
ret = hfi1_user_sdma_process_request(
kiocb->ki_filp, (struct iovec *)(from->iov + done),
dim, &count);
- if (ret)
- goto done;
+ if (ret) {
+ reqs = ret;
+ break;
+ }
dim -= count;
done += count;
reqs++;
}
-done:
- return ret ? ret : reqs;
+
+ return reqs;
}
static int hfi1_file_mmap(struct file *fp, struct vm_area_struct *vma)
@@ -718,7 +723,7 @@ static int hfi1_file_close(struct inode *inode, struct file *fp)
hfi1_user_sdma_free_queues(fdata);
/* release the cpu */
- hfi1_put_proc_affinity(dd, fdata->rec_cpu_num);
+ hfi1_put_proc_affinity(fdata->rec_cpu_num);
/*
* Clear any left over, unhandled events so the next process that
@@ -730,7 +735,6 @@ static int hfi1_file_close(struct inode *inode, struct file *fp)
if (--uctxt->cnt) {
uctxt->active_slaves &= ~(1 << fdata->subctxt);
- uctxt->subpid[fdata->subctxt] = 0;
mutex_unlock(&hfi1_mutex);
goto done;
}
@@ -756,7 +760,6 @@ static int hfi1_file_close(struct inode *inode, struct file *fp)
write_kctxt_csr(dd, uctxt->sc->hw_context, SEND_CTXT_CHECK_ENABLE,
hfi1_pkt_default_send_ctxt_mask(dd, uctxt->sc->type));
sc_disable(uctxt->sc);
- uctxt->pid = 0;
spin_unlock_irqrestore(&dd->uctxt_lock, flags);
dd->rcd[uctxt->ctxt] = NULL;
@@ -818,9 +821,10 @@ static int assign_ctxt(struct file *fp, struct hfi1_user_info *uinfo)
ret = find_shared_ctxt(fp, uinfo);
if (ret < 0)
goto done_unlock;
- if (ret)
- fd->rec_cpu_num = hfi1_get_proc_affinity(
- fd->uctxt->dd, fd->uctxt->numa_id);
+ if (ret) {
+ fd->rec_cpu_num =
+ hfi1_get_proc_affinity(fd->uctxt->numa_id);
+ }
}
/*
@@ -895,7 +899,6 @@ static int find_shared_ctxt(struct file *fp,
}
fd->uctxt = uctxt;
fd->subctxt = uctxt->cnt++;
- uctxt->subpid[fd->subctxt] = current->pid;
uctxt->active_slaves |= 1 << fd->subctxt;
ret = 1;
goto done;
@@ -932,7 +935,11 @@ static int allocate_ctxt(struct file *fp, struct hfi1_devdata *dd,
if (ctxt == dd->num_rcv_contexts)
return -EBUSY;
- fd->rec_cpu_num = hfi1_get_proc_affinity(dd, -1);
+ /*
+ * If we don't have a NUMA node requested, preference is towards
+ * device NUMA node.
+ */
+ fd->rec_cpu_num = hfi1_get_proc_affinity(dd->node);
if (fd->rec_cpu_num != -1)
numa = cpu_to_node(fd->rec_cpu_num);
else
@@ -976,8 +983,7 @@ static int allocate_ctxt(struct file *fp, struct hfi1_devdata *dd,
return ret;
}
uctxt->userversion = uinfo->userversion;
- uctxt->pid = current->pid;
- uctxt->flags = HFI1_CAP_UGET(MASK);
+ uctxt->flags = hfi1_cap_mask; /* save current flag state */
init_waitqueue_head(&uctxt->wait);
strlcpy(uctxt->comm, current->comm, sizeof(uctxt->comm));
memcpy(uctxt->uuid, uinfo->uuid, sizeof(uctxt->uuid));
@@ -1080,18 +1086,18 @@ static int user_init(struct file *fp)
hfi1_set_ctxt_jkey(uctxt->dd, uctxt->ctxt, uctxt->jkey);
rcvctrl_ops = HFI1_RCVCTRL_CTXT_ENB;
- if (HFI1_CAP_KGET_MASK(uctxt->flags, HDRSUPP))
+ if (HFI1_CAP_UGET_MASK(uctxt->flags, HDRSUPP))
rcvctrl_ops |= HFI1_RCVCTRL_TIDFLOW_ENB;
/*
* Ignore the bit in the flags for now until proper
* support for multiple packet per rcv array entry is
* added.
*/
- if (!HFI1_CAP_KGET_MASK(uctxt->flags, MULTI_PKT_EGR))
+ if (!HFI1_CAP_UGET_MASK(uctxt->flags, MULTI_PKT_EGR))
rcvctrl_ops |= HFI1_RCVCTRL_ONE_PKT_EGR_ENB;
- if (HFI1_CAP_KGET_MASK(uctxt->flags, NODROP_EGR_FULL))
+ if (HFI1_CAP_UGET_MASK(uctxt->flags, NODROP_EGR_FULL))
rcvctrl_ops |= HFI1_RCVCTRL_NO_EGR_DROP_ENB;
- if (HFI1_CAP_KGET_MASK(uctxt->flags, NODROP_RHQ_FULL))
+ if (HFI1_CAP_UGET_MASK(uctxt->flags, NODROP_RHQ_FULL))
rcvctrl_ops |= HFI1_RCVCTRL_NO_RHQ_DROP_ENB;
/*
* The RcvCtxtCtrl.TailUpd bit has to be explicitly written.
@@ -1099,7 +1105,7 @@ static int user_init(struct file *fp)
* uses of the chip or ctxt. Therefore, add the rcvctrl op
* for both cases.
*/
- if (HFI1_CAP_KGET_MASK(uctxt->flags, DMA_RTAIL))
+ if (HFI1_CAP_UGET_MASK(uctxt->flags, DMA_RTAIL))
rcvctrl_ops |= HFI1_RCVCTRL_TAILUPD_ENB;
else
rcvctrl_ops |= HFI1_RCVCTRL_TAILUPD_DIS;
@@ -1122,9 +1128,14 @@ static int get_ctxt_info(struct file *fp, void __user *ubase, __u32 len)
int ret = 0;
memset(&cinfo, 0, sizeof(cinfo));
- ret = hfi1_get_base_kinfo(uctxt, &cinfo);
- if (ret < 0)
- goto done;
+ cinfo.runtime_flags = (((uctxt->flags >> HFI1_CAP_MISC_SHIFT) &
+ HFI1_CAP_MISC_MASK) << HFI1_CAP_USER_SHIFT) |
+ HFI1_CAP_UGET_MASK(uctxt->flags, MASK) |
+ HFI1_CAP_KGET_MASK(uctxt->flags, K2U);
+ /* adjust flag if this fd is not able to cache */
+ if (!fd->handler)
+ cinfo.runtime_flags |= HFI1_CAP_TID_UNMAP; /* no caching */
+
cinfo.num_active = hfi1_count_active_units();
cinfo.unit = uctxt->dd->unit;
cinfo.ctxt = uctxt->ctxt;
@@ -1146,7 +1157,7 @@ static int get_ctxt_info(struct file *fp, void __user *ubase, __u32 len)
trace_hfi1_ctxt_info(uctxt->dd, uctxt->ctxt, fd->subctxt, cinfo);
if (copy_to_user(ubase, &cinfo, sizeof(cinfo)))
ret = -EFAULT;
-done:
+
return ret;
}
diff --git a/drivers/infiniband/hw/hfi1/firmware.c b/drivers/infiniband/hw/hfi1/firmware.c
index ed680fda611d..13db8eb4f4ec 100644
--- a/drivers/infiniband/hw/hfi1/firmware.c
+++ b/drivers/infiniband/hw/hfi1/firmware.c
@@ -206,6 +206,9 @@ static const struct firmware *platform_config;
/* the number of fabric SerDes on the SBus */
#define NUM_FABRIC_SERDES 4
+/* ASIC_STS_SBUS_RESULT.RESULT_CODE value */
+#define SBUS_READ_COMPLETE 0x4
+
/* SBus fabric SerDes addresses, one set per HFI */
static const u8 fabric_serdes_addrs[2][NUM_FABRIC_SERDES] = {
{ 0x01, 0x02, 0x03, 0x04 },
@@ -240,6 +243,7 @@ static const u8 all_pcie_serdes_broadcast = 0xe0;
static void dispose_one_firmware(struct firmware_details *fdet);
static int load_fabric_serdes_firmware(struct hfi1_devdata *dd,
struct firmware_details *fdet);
+static void dump_fw_version(struct hfi1_devdata *dd);
/*
* Read a single 64-bit value from 8051 data memory.
@@ -1079,6 +1083,44 @@ void sbus_request(struct hfi1_devdata *dd,
}
/*
+ * Read a value from the SBus.
+ *
+ * Requires the caller to be in fast mode
+ */
+static u32 sbus_read(struct hfi1_devdata *dd, u8 receiver_addr, u8 data_addr,
+ u32 data_in)
+{
+ u64 reg;
+ int retries;
+ int success = 0;
+ u32 result = 0;
+ u32 result_code = 0;
+
+ sbus_request(dd, receiver_addr, data_addr, READ_SBUS_RECEIVER, data_in);
+
+ for (retries = 0; retries < 100; retries++) {
+ usleep_range(1000, 1200); /* arbitrary */
+ reg = read_csr(dd, ASIC_STS_SBUS_RESULT);
+ result_code = (reg >> ASIC_STS_SBUS_RESULT_RESULT_CODE_SHIFT)
+ & ASIC_STS_SBUS_RESULT_RESULT_CODE_MASK;
+ if (result_code != SBUS_READ_COMPLETE)
+ continue;
+
+ success = 1;
+ result = (reg >> ASIC_STS_SBUS_RESULT_DATA_OUT_SHIFT)
+ & ASIC_STS_SBUS_RESULT_DATA_OUT_MASK;
+ break;
+ }
+
+ if (!success) {
+ dd_dev_err(dd, "%s: read failed, result code 0x%x\n", __func__,
+ result_code);
+ }
+
+ return result;
+}
+
+/*
* Turn off the SBus and fabric serdes spicos.
*
* + Must be called with Sbus fast mode turned on.
@@ -1636,6 +1678,7 @@ int load_firmware(struct hfi1_devdata *dd)
return ret;
}
+ dump_fw_version(dd);
return 0;
}
@@ -2054,3 +2097,85 @@ void read_guid(struct hfi1_devdata *dd)
dd_dev_info(dd, "GUID %llx",
(unsigned long long)dd->base_guid);
}
+
+/* read and display firmware version info */
+static void dump_fw_version(struct hfi1_devdata *dd)
+{
+ u32 pcie_vers[NUM_PCIE_SERDES];
+ u32 fabric_vers[NUM_FABRIC_SERDES];
+ u32 sbus_vers;
+ int i;
+ int all_same;
+ int ret;
+ u8 rcv_addr;
+
+ ret = acquire_chip_resource(dd, CR_SBUS, SBUS_TIMEOUT);
+ if (ret) {
+ dd_dev_err(dd, "Unable to acquire SBus to read firmware versions\n");
+ return;
+ }
+
+ /* set fast mode */
+ set_sbus_fast_mode(dd);
+
+ /* read version for SBus Master */
+ sbus_request(dd, SBUS_MASTER_BROADCAST, 0x02, WRITE_SBUS_RECEIVER, 0);
+ sbus_request(dd, SBUS_MASTER_BROADCAST, 0x07, WRITE_SBUS_RECEIVER, 0x1);
+ /* wait for interrupt to be processed */
+ usleep_range(10000, 11000);
+ sbus_vers = sbus_read(dd, SBUS_MASTER_BROADCAST, 0x08, 0x1);
+ dd_dev_info(dd, "SBus Master firmware version 0x%08x\n", sbus_vers);
+
+ /* read version for PCIe SerDes */
+ all_same = 1;
+ pcie_vers[0] = 0;
+ for (i = 0; i < NUM_PCIE_SERDES; i++) {
+ rcv_addr = pcie_serdes_addrs[dd->hfi1_id][i];
+ sbus_request(dd, rcv_addr, 0x03, WRITE_SBUS_RECEIVER, 0);
+ /* wait for interrupt to be processed */
+ usleep_range(10000, 11000);
+ pcie_vers[i] = sbus_read(dd, rcv_addr, 0x04, 0x0);
+ if (i > 0 && pcie_vers[0] != pcie_vers[i])
+ all_same = 0;
+ }
+
+ if (all_same) {
+ dd_dev_info(dd, "PCIe SerDes firmware version 0x%x\n",
+ pcie_vers[0]);
+ } else {
+ dd_dev_warn(dd, "PCIe SerDes do not have the same firmware version\n");
+ for (i = 0; i < NUM_PCIE_SERDES; i++) {
+ dd_dev_info(dd,
+ "PCIe SerDes lane %d firmware version 0x%x\n",
+ i, pcie_vers[i]);
+ }
+ }
+
+ /* read version for fabric SerDes */
+ all_same = 1;
+ fabric_vers[0] = 0;
+ for (i = 0; i < NUM_FABRIC_SERDES; i++) {
+ rcv_addr = fabric_serdes_addrs[dd->hfi1_id][i];
+ sbus_request(dd, rcv_addr, 0x03, WRITE_SBUS_RECEIVER, 0);
+ /* wait for interrupt to be processed */
+ usleep_range(10000, 11000);
+ fabric_vers[i] = sbus_read(dd, rcv_addr, 0x04, 0x0);
+ if (i > 0 && fabric_vers[0] != fabric_vers[i])
+ all_same = 0;
+ }
+
+ if (all_same) {
+ dd_dev_info(dd, "Fabric SerDes firmware version 0x%x\n",
+ fabric_vers[0]);
+ } else {
+ dd_dev_warn(dd, "Fabric SerDes do not have the same firmware version\n");
+ for (i = 0; i < NUM_FABRIC_SERDES; i++) {
+ dd_dev_info(dd,
+ "Fabric SerDes lane %d firmware version 0x%x\n",
+ i, fabric_vers[i]);
+ }
+ }
+
+ clear_sbus_fast_mode(dd);
+ release_chip_resource(dd, CR_SBUS);
+}
diff --git a/drivers/infiniband/hw/hfi1/hfi.h b/drivers/infiniband/hw/hfi1/hfi.h
index 4417a0fd3ef9..1000e0fd96d9 100644
--- a/drivers/infiniband/hw/hfi1/hfi.h
+++ b/drivers/infiniband/hw/hfi1/hfi.h
@@ -62,6 +62,8 @@
#include <linux/cdev.h>
#include <linux/delay.h>
#include <linux/kthread.h>
+#include <linux/i2c.h>
+#include <linux/i2c-algo-bit.h>
#include <rdma/rdma_vt.h>
#include "chip_registers.h"
@@ -253,7 +255,7 @@ struct hfi1_ctxtdata {
/* chip offset of PIO buffers for this ctxt */
u32 piobufs;
/* per-context configuration flags */
- u32 flags;
+ unsigned long flags;
/* per-context event flags for fileops/intr communication */
unsigned long event_flags;
/* WAIT_RCV that timed out, no interrupt */
@@ -268,9 +270,6 @@ struct hfi1_ctxtdata {
u32 urgent;
/* saved total number of polled urgent packets for poll edge trigger */
u32 urgent_poll;
- /* pid of process using this ctxt */
- pid_t pid;
- pid_t subpid[HFI1_MAX_SHARED_CTXTS];
/* same size as task_struct .comm[], command that opened context */
char comm[TASK_COMM_LEN];
/* so file ops can get at unit */
@@ -366,11 +365,6 @@ struct hfi1_packet {
u8 etype;
};
-static inline bool has_sc4_bit(struct hfi1_packet *p)
-{
- return !!rhf_dc_info(p->rhf);
-}
-
/*
* Private data for snoop/capture support.
*/
@@ -805,10 +799,19 @@ struct hfi1_temp {
u8 triggers; /* temperature triggers */
};
+struct hfi1_i2c_bus {
+ struct hfi1_devdata *controlling_dd; /* current controlling device */
+ struct i2c_adapter adapter; /* bus details */
+ struct i2c_algo_bit_data algo; /* bus algorithm details */
+ int num; /* bus number, 0 or 1 */
+};
+
/* common data between shared ASIC HFIs */
struct hfi1_asic_data {
struct hfi1_devdata *dds[2]; /* back pointers */
struct mutex asic_resource_mutex;
+ struct hfi1_i2c_bus *i2c_bus0;
+ struct hfi1_i2c_bus *i2c_bus1;
};
/* device data struct now contains only "general per-device" info.
@@ -1128,7 +1131,8 @@ struct hfi1_devdata {
NUM_SEND_DMA_ENG_ERR_STATUS_COUNTERS];
/* Software counter that aggregates all cce_err_status errors */
u64 sw_cce_err_status_aggregate;
-
+ /* Software counter that aggregates all bypass packet rcv errors */
+ u64 sw_rcv_bypass_packet_errors;
/* receive interrupt functions */
rhf_rcv_function_ptr *rhf_rcv_function_map;
rhf_rcv_function_ptr normal_rhf_rcv_functions[8];
@@ -1174,6 +1178,8 @@ struct hfi1_devdata {
/* 8051 firmware version helper */
#define dc8051_ver(a, b) ((a) << 8 | (b))
+#define dc8051_ver_maj(a) ((a & 0xff00) >> 8)
+#define dc8051_ver_min(a) (a & 0x00ff)
/* f_put_tid types */
#define PT_EXPECTED 0
@@ -1182,6 +1188,7 @@ struct hfi1_devdata {
struct tid_rb_node;
struct mmu_rb_node;
+struct mmu_rb_handler;
/* Private data for file operations */
struct hfi1_filedata {
@@ -1192,7 +1199,7 @@ struct hfi1_filedata {
/* for cpu affinity; -1 if none */
int rec_cpu_num;
u32 tid_n_pinned;
- struct rb_root tid_rb_root;
+ struct mmu_rb_handler *handler;
struct tid_rb_node **entry_to_rb;
spinlock_t tid_lock; /* protect tid_[limit,used] counters */
u32 tid_limit;
@@ -1201,6 +1208,7 @@ struct hfi1_filedata {
u32 invalid_tid_idx;
/* protect invalid_tids array and invalid_tid_idx */
spinlock_t invalid_lock;
+ struct mm_struct *mm;
};
extern struct list_head hfi1_dev_list;
@@ -1234,6 +1242,8 @@ int handle_receive_interrupt_nodma_rtail(struct hfi1_ctxtdata *, int);
int handle_receive_interrupt_dma_rtail(struct hfi1_ctxtdata *, int);
void set_all_slowpath(struct hfi1_devdata *dd);
+extern const struct pci_device_id hfi1_pci_tbl[];
+
/* receive packet handler dispositions */
#define RCV_PKT_OK 0x0 /* keep going */
#define RCV_PKT_LIMIT 0x1 /* stop, hit limit, start thread */
@@ -1259,7 +1269,7 @@ void receive_interrupt_work(struct work_struct *work);
static inline int hdr2sc(struct hfi1_message_header *hdr, u64 rhf)
{
return ((be16_to_cpu(hdr->lrh[0]) >> 12) & 0xf) |
- ((!!(rhf & RHF_DC_INFO_SMASK)) << 4);
+ ((!!(rhf_dc_info(rhf))) << 4);
}
static inline u16 generate_jkey(kuid_t uid)
@@ -1569,6 +1579,22 @@ static inline struct hfi1_ibport *to_iport(struct ib_device *ibdev, u8 port)
return &dd->pport[pidx].ibport_data;
}
+void hfi1_process_ecn_slowpath(struct rvt_qp *qp, struct hfi1_packet *pkt,
+ bool do_cnp);
+static inline bool process_ecn(struct rvt_qp *qp, struct hfi1_packet *pkt,
+ bool do_cnp)
+{
+ struct hfi1_other_headers *ohdr = pkt->ohdr;
+ u32 bth1;
+
+ bth1 = be32_to_cpu(ohdr->bth[1]);
+ if (unlikely(bth1 & (HFI1_BECN_SMASK | HFI1_FECN_SMASK))) {
+ hfi1_process_ecn_slowpath(qp, pkt, do_cnp);
+ return bth1 & HFI1_FECN_SMASK;
+ }
+ return false;
+}
+
/*
* Return the indexed PKEY from the port PKEY table.
*/
@@ -1586,8 +1612,7 @@ static inline u16 hfi1_get_pkey(struct hfi1_ibport *ibp, unsigned index)
}
/*
- * Readers of cc_state must call get_cc_state() under rcu_read_lock().
- * Writers of cc_state must call get_cc_state() under cc_state_lock.
+ * Called by readers of cc_state only, must call under rcu_read_lock().
*/
static inline struct cc_state *get_cc_state(struct hfi1_pportdata *ppd)
{
@@ -1595,6 +1620,16 @@ static inline struct cc_state *get_cc_state(struct hfi1_pportdata *ppd)
}
/*
+ * Called by writers of cc_state only, must call under cc_state_lock.
+ */
+static inline
+struct cc_state *get_cc_state_protected(struct hfi1_pportdata *ppd)
+{
+ return rcu_dereference_protected(ppd->cc_state,
+ lockdep_is_held(&ppd->cc_state_lock));
+}
+
+/*
* values for dd->flags (_device_ related flags)
*/
#define HFI1_INITTED 0x1 /* chip and driver up and initted */
@@ -1669,9 +1704,12 @@ void shutdown_led_override(struct hfi1_pportdata *ppd);
*/
#define DEFAULT_RCVHDR_ENTSIZE 32
-bool hfi1_can_pin_pages(struct hfi1_devdata *, u32, u32);
-int hfi1_acquire_user_pages(unsigned long, size_t, bool, struct page **);
-void hfi1_release_user_pages(struct mm_struct *, struct page **, size_t, bool);
+bool hfi1_can_pin_pages(struct hfi1_devdata *dd, struct mm_struct *mm,
+ u32 nlocked, u32 npages);
+int hfi1_acquire_user_pages(struct mm_struct *mm, unsigned long vaddr,
+ size_t npages, bool writable, struct page **pages);
+void hfi1_release_user_pages(struct mm_struct *mm, struct page **p,
+ size_t npages, bool dirty);
static inline void clear_rcvhdrtail(const struct hfi1_ctxtdata *rcd)
{
@@ -1947,4 +1985,55 @@ static inline u32 qsfp_resource(struct hfi1_devdata *dd)
int hfi1_tempsense_rd(struct hfi1_devdata *dd, struct hfi1_temp *temp);
+#define DD_DEV_ENTRY(dd) __string(dev, dev_name(&(dd)->pcidev->dev))
+#define DD_DEV_ASSIGN(dd) __assign_str(dev, dev_name(&(dd)->pcidev->dev))
+
+#define packettype_name(etype) { RHF_RCV_TYPE_##etype, #etype }
+#define show_packettype(etype) \
+__print_symbolic(etype, \
+ packettype_name(EXPECTED), \
+ packettype_name(EAGER), \
+ packettype_name(IB), \
+ packettype_name(ERROR), \
+ packettype_name(BYPASS))
+
+#define ib_opcode_name(opcode) { IB_OPCODE_##opcode, #opcode }
+#define show_ib_opcode(opcode) \
+__print_symbolic(opcode, \
+ ib_opcode_name(RC_SEND_FIRST), \
+ ib_opcode_name(RC_SEND_MIDDLE), \
+ ib_opcode_name(RC_SEND_LAST), \
+ ib_opcode_name(RC_SEND_LAST_WITH_IMMEDIATE), \
+ ib_opcode_name(RC_SEND_ONLY), \
+ ib_opcode_name(RC_SEND_ONLY_WITH_IMMEDIATE), \
+ ib_opcode_name(RC_RDMA_WRITE_FIRST), \
+ ib_opcode_name(RC_RDMA_WRITE_MIDDLE), \
+ ib_opcode_name(RC_RDMA_WRITE_LAST), \
+ ib_opcode_name(RC_RDMA_WRITE_LAST_WITH_IMMEDIATE), \
+ ib_opcode_name(RC_RDMA_WRITE_ONLY), \
+ ib_opcode_name(RC_RDMA_WRITE_ONLY_WITH_IMMEDIATE), \
+ ib_opcode_name(RC_RDMA_READ_REQUEST), \
+ ib_opcode_name(RC_RDMA_READ_RESPONSE_FIRST), \
+ ib_opcode_name(RC_RDMA_READ_RESPONSE_MIDDLE), \
+ ib_opcode_name(RC_RDMA_READ_RESPONSE_LAST), \
+ ib_opcode_name(RC_RDMA_READ_RESPONSE_ONLY), \
+ ib_opcode_name(RC_ACKNOWLEDGE), \
+ ib_opcode_name(RC_ATOMIC_ACKNOWLEDGE), \
+ ib_opcode_name(RC_COMPARE_SWAP), \
+ ib_opcode_name(RC_FETCH_ADD), \
+ ib_opcode_name(UC_SEND_FIRST), \
+ ib_opcode_name(UC_SEND_MIDDLE), \
+ ib_opcode_name(UC_SEND_LAST), \
+ ib_opcode_name(UC_SEND_LAST_WITH_IMMEDIATE), \
+ ib_opcode_name(UC_SEND_ONLY), \
+ ib_opcode_name(UC_SEND_ONLY_WITH_IMMEDIATE), \
+ ib_opcode_name(UC_RDMA_WRITE_FIRST), \
+ ib_opcode_name(UC_RDMA_WRITE_MIDDLE), \
+ ib_opcode_name(UC_RDMA_WRITE_LAST), \
+ ib_opcode_name(UC_RDMA_WRITE_LAST_WITH_IMMEDIATE), \
+ ib_opcode_name(UC_RDMA_WRITE_ONLY), \
+ ib_opcode_name(UC_RDMA_WRITE_ONLY_WITH_IMMEDIATE), \
+ ib_opcode_name(UD_SEND_ONLY), \
+ ib_opcode_name(UD_SEND_ONLY_WITH_IMMEDIATE), \
+ ib_opcode_name(CNP))
#endif /* _HFI1_KERNEL_H */
diff --git a/drivers/infiniband/hw/hfi1/init.c b/drivers/infiniband/hw/hfi1/init.c
index eed971ccd2a1..a358d23ecd54 100644
--- a/drivers/infiniband/hw/hfi1/init.c
+++ b/drivers/infiniband/hw/hfi1/init.c
@@ -64,6 +64,7 @@
#include "debugfs.h"
#include "verbs.h"
#include "aspm.h"
+#include "affinity.h"
#undef pr_fmt
#define pr_fmt(fmt) DRIVER_NAME ": " fmt
@@ -474,8 +475,9 @@ static enum hrtimer_restart cca_timer_fn(struct hrtimer *t)
void hfi1_init_pportdata(struct pci_dev *pdev, struct hfi1_pportdata *ppd,
struct hfi1_devdata *dd, u8 hw_pidx, u8 port)
{
- int i, size;
+ int i;
uint default_pkey_idx;
+ struct cc_state *cc_state;
ppd->dd = dd;
ppd->hw_pidx = hw_pidx;
@@ -526,9 +528,9 @@ void hfi1_init_pportdata(struct pci_dev *pdev, struct hfi1_pportdata *ppd,
spin_lock_init(&ppd->cc_state_lock);
spin_lock_init(&ppd->cc_log_lock);
- size = sizeof(struct cc_state);
- RCU_INIT_POINTER(ppd->cc_state, kzalloc(size, GFP_KERNEL));
- if (!rcu_dereference(ppd->cc_state))
+ cc_state = kzalloc(sizeof(*cc_state), GFP_KERNEL);
+ RCU_INIT_POINTER(ppd->cc_state, cc_state);
+ if (!cc_state)
goto bail;
return;
@@ -972,39 +974,49 @@ void hfi1_free_ctxtdata(struct hfi1_devdata *dd, struct hfi1_ctxtdata *rcd)
/*
* Release our hold on the shared asic data. If we are the last one,
- * free the structure. Must be holding hfi1_devs_lock.
+ * return the structure to be finalized outside the lock. Must be
+ * holding hfi1_devs_lock.
*/
-static void release_asic_data(struct hfi1_devdata *dd)
+static struct hfi1_asic_data *release_asic_data(struct hfi1_devdata *dd)
{
+ struct hfi1_asic_data *ad;
int other;
if (!dd->asic_data)
- return;
+ return NULL;
dd->asic_data->dds[dd->hfi1_id] = NULL;
other = dd->hfi1_id ? 0 : 1;
- if (!dd->asic_data->dds[other]) {
- /* we are the last holder, free it */
- kfree(dd->asic_data);
- }
+ ad = dd->asic_data;
dd->asic_data = NULL;
+ /* return NULL if the other dd still has a link */
+ return ad->dds[other] ? NULL : ad;
+}
+
+static void finalize_asic_data(struct hfi1_devdata *dd,
+ struct hfi1_asic_data *ad)
+{
+ clean_up_i2c(dd, ad);
+ kfree(ad);
}
static void __hfi1_free_devdata(struct kobject *kobj)
{
struct hfi1_devdata *dd =
container_of(kobj, struct hfi1_devdata, kobj);
+ struct hfi1_asic_data *ad;
unsigned long flags;
spin_lock_irqsave(&hfi1_devs_lock, flags);
idr_remove(&hfi1_unit_table, dd->unit);
list_del(&dd->list);
- release_asic_data(dd);
+ ad = release_asic_data(dd);
spin_unlock_irqrestore(&hfi1_devs_lock, flags);
+ if (ad)
+ finalize_asic_data(dd, ad);
free_platform_config(dd);
rcu_barrier(); /* wait for rcu callbacks to complete */
free_percpu(dd->int_counter);
free_percpu(dd->rcv_limit);
- hfi1_dev_affinity_free(dd);
free_percpu(dd->send_schedule);
rvt_dealloc_device(&dd->verbs_dev.rdi);
}
@@ -1162,7 +1174,7 @@ static int init_one(struct pci_dev *, const struct pci_device_id *);
#define DRIVER_LOAD_MSG "Intel " DRIVER_NAME " loaded: "
#define PFX DRIVER_NAME ": "
-static const struct pci_device_id hfi1_pci_tbl[] = {
+const struct pci_device_id hfi1_pci_tbl[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL0) },
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL1) },
{ 0, }
@@ -1198,6 +1210,10 @@ static int __init hfi1_mod_init(void)
if (ret)
goto bail;
+ ret = node_affinity_init();
+ if (ret)
+ goto bail;
+
/* validate max MTU before any devices start */
if (!valid_opa_max_mtu(hfi1_max_mtu)) {
pr_err("Invalid max_mtu 0x%x, using 0x%x instead\n",
@@ -1278,6 +1294,7 @@ module_init(hfi1_mod_init);
static void __exit hfi1_mod_cleanup(void)
{
pci_unregister_driver(&hfi1_pci_driver);
+ node_affinity_destroy();
hfi1_wss_exit();
hfi1_dbg_exit();
hfi1_cpulist_count = 0;
@@ -1311,7 +1328,7 @@ static void cleanup_device_data(struct hfi1_devdata *dd)
hrtimer_cancel(&ppd->cca_timer[i].hrtimer);
spin_lock(&ppd->cc_state_lock);
- cc_state = get_cc_state(ppd);
+ cc_state = get_cc_state_protected(ppd);
RCU_INIT_POINTER(ppd->cc_state, NULL);
spin_unlock(&ppd->cc_state_lock);
@@ -1760,8 +1777,8 @@ int hfi1_setup_eagerbufs(struct hfi1_ctxtdata *rcd)
hfi1_cdbg(PROC,
"ctxt%u: Alloced %u rcv tid entries @ %uKB, total %zuKB\n",
- rcd->ctxt, rcd->egrbufs.alloced, rcd->egrbufs.rcvtid_size,
- rcd->egrbufs.size);
+ rcd->ctxt, rcd->egrbufs.alloced,
+ rcd->egrbufs.rcvtid_size / 1024, rcd->egrbufs.size / 1024);
/*
* Set the contexts rcv array head update threshold to the closest
diff --git a/drivers/infiniband/hw/hfi1/mad.c b/drivers/infiniband/hw/hfi1/mad.c
index fca07a1d6c28..1263abe01999 100644
--- a/drivers/infiniband/hw/hfi1/mad.c
+++ b/drivers/infiniband/hw/hfi1/mad.c
@@ -588,7 +588,6 @@ static int __subn_get_opa_portinfo(struct opa_smp *smp, u32 am, u8 *data,
pi->port_phys_conf = (ppd->port_type & 0xf);
-#if PI_LED_ENABLE_SUP
pi->port_states.ledenable_offlinereason = ppd->neighbor_normal << 4;
pi->port_states.ledenable_offlinereason |=
ppd->is_sm_config_started << 5;
@@ -602,11 +601,6 @@ static int __subn_get_opa_portinfo(struct opa_smp *smp, u32 am, u8 *data,
pi->port_states.ledenable_offlinereason |= is_beaconing_active << 6;
pi->port_states.ledenable_offlinereason |=
ppd->offline_disabled_reason;
-#else
- pi->port_states.offline_reason = ppd->neighbor_normal << 4;
- pi->port_states.offline_reason |= ppd->is_sm_config_started << 5;
- pi->port_states.offline_reason |= ppd->offline_disabled_reason;
-#endif /* PI_LED_ENABLE_SUP */
pi->port_states.portphysstate_portstate =
(hfi1_ibphys_portstate(ppd) << 4) | state;
@@ -1752,17 +1746,11 @@ static int __subn_get_opa_psi(struct opa_smp *smp, u32 am, u8 *data,
if (start_of_sm_config && (lstate == IB_PORT_INIT))
ppd->is_sm_config_started = 1;
-#if PI_LED_ENABLE_SUP
psi->port_states.ledenable_offlinereason = ppd->neighbor_normal << 4;
psi->port_states.ledenable_offlinereason |=
ppd->is_sm_config_started << 5;
psi->port_states.ledenable_offlinereason |=
ppd->offline_disabled_reason;
-#else
- psi->port_states.offline_reason = ppd->neighbor_normal << 4;
- psi->port_states.offline_reason |= ppd->is_sm_config_started << 5;
- psi->port_states.offline_reason |= ppd->offline_disabled_reason;
-#endif /* PI_LED_ENABLE_SUP */
psi->port_states.portphysstate_portstate =
(hfi1_ibphys_portstate(ppd) << 4) | (lstate & 0xf);
@@ -2430,14 +2418,9 @@ static int pma_get_opa_portstatus(struct opa_pma_mad *pmp,
rsp->port_rcv_remote_physical_errors =
cpu_to_be64(read_dev_cntr(dd, C_DC_RMT_PHY_ERR,
CNTR_INVALID_VL));
- tmp = read_dev_cntr(dd, C_DC_RX_REPLAY, CNTR_INVALID_VL);
- tmp2 = tmp + read_dev_cntr(dd, C_DC_TX_REPLAY, CNTR_INVALID_VL);
- if (tmp2 < tmp) {
- /* overflow/wrapped */
- rsp->local_link_integrity_errors = cpu_to_be64(~0);
- } else {
- rsp->local_link_integrity_errors = cpu_to_be64(tmp2);
- }
+ rsp->local_link_integrity_errors =
+ cpu_to_be64(read_dev_cntr(dd, C_DC_RX_REPLAY,
+ CNTR_INVALID_VL));
tmp = read_dev_cntr(dd, C_DC_SEQ_CRC_CNT, CNTR_INVALID_VL);
tmp2 = tmp + read_dev_cntr(dd, C_DC_REINIT_FROM_PEER_CNT,
CNTR_INVALID_VL);
@@ -2499,6 +2482,9 @@ static int pma_get_opa_portstatus(struct opa_pma_mad *pmp,
cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_BCN_VL,
idx_from_vl(vl)));
+ rsp->vls[vfi].port_vl_xmit_discards =
+ cpu_to_be64(read_port_cntr(ppd, C_SW_XMIT_DSCD_VL,
+ idx_from_vl(vl)));
vlinfo++;
vfi++;
}
@@ -2529,9 +2515,8 @@ static u64 get_error_counter_summary(struct ib_device *ibdev, u8 port,
error_counter_summary += read_dev_cntr(dd, C_DC_RMT_PHY_ERR,
CNTR_INVALID_VL);
/* local link integrity must be right-shifted by the lli resolution */
- tmp = read_dev_cntr(dd, C_DC_RX_REPLAY, CNTR_INVALID_VL);
- tmp += read_dev_cntr(dd, C_DC_TX_REPLAY, CNTR_INVALID_VL);
- error_counter_summary += (tmp >> res_lli);
+ error_counter_summary += (read_dev_cntr(dd, C_DC_RX_REPLAY,
+ CNTR_INVALID_VL) >> res_lli);
/* link error recovery must b right-shifted by the ler resolution */
tmp = read_dev_cntr(dd, C_DC_SEQ_CRC_CNT, CNTR_INVALID_VL);
tmp += read_dev_cntr(dd, C_DC_REINIT_FROM_PEER_CNT, CNTR_INVALID_VL);
@@ -2800,14 +2785,9 @@ static void pma_get_opa_port_ectrs(struct ib_device *ibdev,
rsp->port_rcv_constraint_errors =
cpu_to_be64(read_port_cntr(ppd, C_SW_RCV_CSTR_ERR,
CNTR_INVALID_VL));
- tmp = read_dev_cntr(dd, C_DC_RX_REPLAY, CNTR_INVALID_VL);
- tmp2 = tmp + read_dev_cntr(dd, C_DC_TX_REPLAY, CNTR_INVALID_VL);
- if (tmp2 < tmp) {
- /* overflow/wrapped */
- rsp->local_link_integrity_errors = cpu_to_be64(~0);
- } else {
- rsp->local_link_integrity_errors = cpu_to_be64(tmp2);
- }
+ rsp->local_link_integrity_errors =
+ cpu_to_be64(read_dev_cntr(dd, C_DC_RX_REPLAY,
+ CNTR_INVALID_VL));
rsp->excessive_buffer_overruns =
cpu_to_be64(read_dev_cntr(dd, C_RCV_OVF, CNTR_INVALID_VL));
}
@@ -2883,14 +2863,17 @@ static int pma_get_opa_porterrors(struct opa_pma_mad *pmp,
tmp = read_dev_cntr(dd, C_DC_UNC_ERR, CNTR_INVALID_VL);
rsp->uncorrectable_errors = tmp < 0x100 ? (tmp & 0xff) : 0xff;
-
+ rsp->port_rcv_errors =
+ cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_ERR, CNTR_INVALID_VL));
vlinfo = &rsp->vls[0];
vfi = 0;
vl_select_mask = be32_to_cpu(req->vl_select_mask);
for_each_set_bit(vl, (unsigned long *)&(vl_select_mask),
8 * sizeof(req->vl_select_mask)) {
memset(vlinfo, 0, sizeof(*vlinfo));
- /* vlinfo->vls[vfi].port_vl_xmit_discards ??? */
+ rsp->vls[vfi].port_vl_xmit_discards =
+ cpu_to_be64(read_port_cntr(ppd, C_SW_XMIT_DSCD_VL,
+ idx_from_vl(vl)));
vlinfo += 1;
vfi++;
}
@@ -3162,10 +3145,8 @@ static int pma_set_opa_portstatus(struct opa_pma_mad *pmp,
if (counter_select & CS_PORT_RCV_REMOTE_PHYSICAL_ERRORS)
write_dev_cntr(dd, C_DC_RMT_PHY_ERR, CNTR_INVALID_VL, 0);
- if (counter_select & CS_LOCAL_LINK_INTEGRITY_ERRORS) {
- write_dev_cntr(dd, C_DC_TX_REPLAY, CNTR_INVALID_VL, 0);
+ if (counter_select & CS_LOCAL_LINK_INTEGRITY_ERRORS)
write_dev_cntr(dd, C_DC_RX_REPLAY, CNTR_INVALID_VL, 0);
- }
if (counter_select & CS_LINK_ERROR_RECOVERY) {
write_dev_cntr(dd, C_DC_SEQ_CRC_CNT, CNTR_INVALID_VL, 0);
@@ -3223,7 +3204,9 @@ static int pma_set_opa_portstatus(struct opa_pma_mad *pmp,
/* if (counter_select & CS_PORT_MARK_FECN)
* write_csr(dd, DCC_PRF_PORT_VL_MARK_FECN_CNT + offset, 0);
*/
- /* port_vl_xmit_discards ??? */
+ if (counter_select & C_SW_XMIT_DSCD_VL)
+ write_port_cntr(ppd, C_SW_XMIT_DSCD_VL,
+ idx_from_vl(vl), 0);
}
if (resp_len)
@@ -3392,7 +3375,7 @@ static void apply_cc_state(struct hfi1_pportdata *ppd)
*/
spin_lock(&ppd->cc_state_lock);
- old_cc_state = get_cc_state(ppd);
+ old_cc_state = get_cc_state_protected(ppd);
if (!old_cc_state) {
/* never active, or shutting down */
spin_unlock(&ppd->cc_state_lock);
@@ -3960,7 +3943,6 @@ void clear_linkup_counters(struct hfi1_devdata *dd)
write_dev_cntr(dd, C_DC_SEQ_CRC_CNT, CNTR_INVALID_VL, 0);
write_dev_cntr(dd, C_DC_REINIT_FROM_PEER_CNT, CNTR_INVALID_VL, 0);
/* LocalLinkIntegrityErrors */
- write_dev_cntr(dd, C_DC_TX_REPLAY, CNTR_INVALID_VL, 0);
write_dev_cntr(dd, C_DC_RX_REPLAY, CNTR_INVALID_VL, 0);
/* ExcessiveBufferOverruns */
write_dev_cntr(dd, C_RCV_OVF, CNTR_INVALID_VL, 0);
diff --git a/drivers/infiniband/hw/hfi1/mad.h b/drivers/infiniband/hw/hfi1/mad.h
index 8b734aaae88a..5aa3fd1be653 100644
--- a/drivers/infiniband/hw/hfi1/mad.h
+++ b/drivers/infiniband/hw/hfi1/mad.h
@@ -48,15 +48,8 @@
#define _HFI1_MAD_H
#include <rdma/ib_pma.h>
-#define USE_PI_LED_ENABLE 1 /*
- * use led enabled bit in struct
- * opa_port_states, if available
- */
#include <rdma/opa_smi.h>
#include <rdma/opa_port_info.h>
-#ifndef PI_LED_ENABLE_SUP
-#define PI_LED_ENABLE_SUP 0
-#endif
#include "opa_compat.h"
/*
diff --git a/drivers/infiniband/hw/hfi1/mmu_rb.c b/drivers/infiniband/hw/hfi1/mmu_rb.c
index b7a80aa1ae30..7ad30898fc19 100644
--- a/drivers/infiniband/hw/hfi1/mmu_rb.c
+++ b/drivers/infiniband/hw/hfi1/mmu_rb.c
@@ -53,19 +53,20 @@
#include "trace.h"
struct mmu_rb_handler {
- struct list_head list;
struct mmu_notifier mn;
- struct rb_root *root;
+ struct rb_root root;
+ void *ops_arg;
spinlock_t lock; /* protect the RB tree */
struct mmu_rb_ops *ops;
+ struct mm_struct *mm;
+ struct list_head lru_list;
+ struct work_struct del_work;
+ struct list_head del_list;
+ struct workqueue_struct *wq;
};
-static LIST_HEAD(mmu_rb_handlers);
-static DEFINE_SPINLOCK(mmu_rb_lock); /* protect mmu_rb_handlers list */
-
static unsigned long mmu_node_start(struct mmu_rb_node *);
static unsigned long mmu_node_last(struct mmu_rb_node *);
-static struct mmu_rb_handler *find_mmu_handler(struct rb_root *);
static inline void mmu_notifier_page(struct mmu_notifier *, struct mm_struct *,
unsigned long);
static inline void mmu_notifier_range_start(struct mmu_notifier *,
@@ -76,6 +77,9 @@ static void mmu_notifier_mem_invalidate(struct mmu_notifier *,
unsigned long, unsigned long);
static struct mmu_rb_node *__mmu_rb_search(struct mmu_rb_handler *,
unsigned long, unsigned long);
+static void do_remove(struct mmu_rb_handler *handler,
+ struct list_head *del_list);
+static void handle_remove(struct work_struct *work);
static struct mmu_notifier_ops mn_opts = {
.invalidate_page = mmu_notifier_page,
@@ -95,73 +99,79 @@ static unsigned long mmu_node_last(struct mmu_rb_node *node)
return PAGE_ALIGN(node->addr + node->len) - 1;
}
-int hfi1_mmu_rb_register(struct rb_root *root, struct mmu_rb_ops *ops)
+int hfi1_mmu_rb_register(void *ops_arg, struct mm_struct *mm,
+ struct mmu_rb_ops *ops,
+ struct workqueue_struct *wq,
+ struct mmu_rb_handler **handler)
{
struct mmu_rb_handler *handlr;
-
- if (!ops->invalidate)
- return -EINVAL;
+ int ret;
handlr = kmalloc(sizeof(*handlr), GFP_KERNEL);
if (!handlr)
return -ENOMEM;
- handlr->root = root;
+ handlr->root = RB_ROOT;
handlr->ops = ops;
+ handlr->ops_arg = ops_arg;
INIT_HLIST_NODE(&handlr->mn.hlist);
spin_lock_init(&handlr->lock);
handlr->mn.ops = &mn_opts;
- spin_lock(&mmu_rb_lock);
- list_add_tail_rcu(&handlr->list, &mmu_rb_handlers);
- spin_unlock(&mmu_rb_lock);
+ handlr->mm = mm;
+ INIT_WORK(&handlr->del_work, handle_remove);
+ INIT_LIST_HEAD(&handlr->del_list);
+ INIT_LIST_HEAD(&handlr->lru_list);
+ handlr->wq = wq;
+
+ ret = mmu_notifier_register(&handlr->mn, handlr->mm);
+ if (ret) {
+ kfree(handlr);
+ return ret;
+ }
- return mmu_notifier_register(&handlr->mn, current->mm);
+ *handler = handlr;
+ return 0;
}
-void hfi1_mmu_rb_unregister(struct rb_root *root)
+void hfi1_mmu_rb_unregister(struct mmu_rb_handler *handler)
{
- struct mmu_rb_handler *handler = find_mmu_handler(root);
+ struct mmu_rb_node *rbnode;
+ struct rb_node *node;
unsigned long flags;
-
- if (!handler)
- return;
+ struct list_head del_list;
/* Unregister first so we don't get any more notifications. */
- if (current->mm)
- mmu_notifier_unregister(&handler->mn, current->mm);
+ mmu_notifier_unregister(&handler->mn, handler->mm);
- spin_lock(&mmu_rb_lock);
- list_del_rcu(&handler->list);
- spin_unlock(&mmu_rb_lock);
- synchronize_rcu();
+ /*
+ * Make sure the wq delete handler is finished running. It will not
+ * be triggered once the mmu notifiers are unregistered above.
+ */
+ flush_work(&handler->del_work);
+
+ INIT_LIST_HEAD(&del_list);
spin_lock_irqsave(&handler->lock, flags);
- if (!RB_EMPTY_ROOT(root)) {
- struct rb_node *node;
- struct mmu_rb_node *rbnode;
-
- while ((node = rb_first(root))) {
- rbnode = rb_entry(node, struct mmu_rb_node, node);
- rb_erase(node, root);
- if (handler->ops->remove)
- handler->ops->remove(root, rbnode, NULL);
- }
+ while ((node = rb_first(&handler->root))) {
+ rbnode = rb_entry(node, struct mmu_rb_node, node);
+ rb_erase(node, &handler->root);
+ /* move from LRU list to delete list */
+ list_move(&rbnode->list, &del_list);
}
spin_unlock_irqrestore(&handler->lock, flags);
+ do_remove(handler, &del_list);
+
kfree(handler);
}
-int hfi1_mmu_rb_insert(struct rb_root *root, struct mmu_rb_node *mnode)
+int hfi1_mmu_rb_insert(struct mmu_rb_handler *handler,
+ struct mmu_rb_node *mnode)
{
- struct mmu_rb_handler *handler = find_mmu_handler(root);
struct mmu_rb_node *node;
unsigned long flags;
int ret = 0;
- if (!handler)
- return -EINVAL;
-
spin_lock_irqsave(&handler->lock, flags);
hfi1_cdbg(MMU, "Inserting node addr 0x%llx, len %u", mnode->addr,
mnode->len);
@@ -170,12 +180,13 @@ int hfi1_mmu_rb_insert(struct rb_root *root, struct mmu_rb_node *mnode)
ret = -EINVAL;
goto unlock;
}
- __mmu_int_rb_insert(mnode, root);
+ __mmu_int_rb_insert(mnode, &handler->root);
+ list_add(&mnode->list, &handler->lru_list);
- if (handler->ops->insert) {
- ret = handler->ops->insert(root, mnode);
- if (ret)
- __mmu_int_rb_remove(mnode, root);
+ ret = handler->ops->insert(handler->ops_arg, mnode);
+ if (ret) {
+ __mmu_int_rb_remove(mnode, &handler->root);
+ list_del(&mnode->list); /* remove from LRU list */
}
unlock:
spin_unlock_irqrestore(&handler->lock, flags);
@@ -191,10 +202,10 @@ static struct mmu_rb_node *__mmu_rb_search(struct mmu_rb_handler *handler,
hfi1_cdbg(MMU, "Searching for addr 0x%llx, len %u", addr, len);
if (!handler->ops->filter) {
- node = __mmu_int_rb_iter_first(handler->root, addr,
+ node = __mmu_int_rb_iter_first(&handler->root, addr,
(addr + len) - 1);
} else {
- for (node = __mmu_int_rb_iter_first(handler->root, addr,
+ for (node = __mmu_int_rb_iter_first(&handler->root, addr,
(addr + len) - 1);
node;
node = __mmu_int_rb_iter_next(node, addr,
@@ -206,82 +217,72 @@ static struct mmu_rb_node *__mmu_rb_search(struct mmu_rb_handler *handler,
return node;
}
-/* Caller must *not* hold handler lock. */
-static void __mmu_rb_remove(struct mmu_rb_handler *handler,
- struct mmu_rb_node *node, struct mm_struct *mm)
-{
- unsigned long flags;
-
- /* Validity of handler and node pointers has been checked by caller. */
- hfi1_cdbg(MMU, "Removing node addr 0x%llx, len %u", node->addr,
- node->len);
- spin_lock_irqsave(&handler->lock, flags);
- __mmu_int_rb_remove(node, handler->root);
- spin_unlock_irqrestore(&handler->lock, flags);
-
- if (handler->ops->remove)
- handler->ops->remove(handler->root, node, mm);
-}
-
-struct mmu_rb_node *hfi1_mmu_rb_search(struct rb_root *root, unsigned long addr,
- unsigned long len)
+struct mmu_rb_node *hfi1_mmu_rb_extract(struct mmu_rb_handler *handler,
+ unsigned long addr, unsigned long len)
{
- struct mmu_rb_handler *handler = find_mmu_handler(root);
struct mmu_rb_node *node;
unsigned long flags;
- if (!handler)
- return ERR_PTR(-EINVAL);
-
spin_lock_irqsave(&handler->lock, flags);
node = __mmu_rb_search(handler, addr, len);
+ if (node) {
+ __mmu_int_rb_remove(node, &handler->root);
+ list_del(&node->list); /* remove from LRU list */
+ }
spin_unlock_irqrestore(&handler->lock, flags);
return node;
}
-struct mmu_rb_node *hfi1_mmu_rb_extract(struct rb_root *root,
- unsigned long addr, unsigned long len)
+void hfi1_mmu_rb_evict(struct mmu_rb_handler *handler, void *evict_arg)
{
- struct mmu_rb_handler *handler = find_mmu_handler(root);
- struct mmu_rb_node *node;
+ struct mmu_rb_node *rbnode, *ptr;
+ struct list_head del_list;
unsigned long flags;
+ bool stop = false;
- if (!handler)
- return ERR_PTR(-EINVAL);
+ INIT_LIST_HEAD(&del_list);
spin_lock_irqsave(&handler->lock, flags);
- node = __mmu_rb_search(handler, addr, len);
- if (node)
- __mmu_int_rb_remove(node, handler->root);
+ list_for_each_entry_safe_reverse(rbnode, ptr, &handler->lru_list,
+ list) {
+ if (handler->ops->evict(handler->ops_arg, rbnode, evict_arg,
+ &stop)) {
+ __mmu_int_rb_remove(rbnode, &handler->root);
+ /* move from LRU list to delete list */
+ list_move(&rbnode->list, &del_list);
+ }
+ if (stop)
+ break;
+ }
spin_unlock_irqrestore(&handler->lock, flags);
- return node;
+ while (!list_empty(&del_list)) {
+ rbnode = list_first_entry(&del_list, struct mmu_rb_node, list);
+ list_del(&rbnode->list);
+ handler->ops->remove(handler->ops_arg, rbnode);
+ }
}
-void hfi1_mmu_rb_remove(struct rb_root *root, struct mmu_rb_node *node)
+/*
+ * It is up to the caller to ensure that this function does not race with the
+ * mmu invalidate notifier which may be calling the users remove callback on
+ * 'node'.
+ */
+void hfi1_mmu_rb_remove(struct mmu_rb_handler *handler,
+ struct mmu_rb_node *node)
{
- struct mmu_rb_handler *handler = find_mmu_handler(root);
-
- if (!handler || !node)
- return;
-
- __mmu_rb_remove(handler, node, NULL);
-}
+ unsigned long flags;
-static struct mmu_rb_handler *find_mmu_handler(struct rb_root *root)
-{
- struct mmu_rb_handler *handler;
+ /* Validity of handler and node pointers has been checked by caller. */
+ hfi1_cdbg(MMU, "Removing node addr 0x%llx, len %u", node->addr,
+ node->len);
+ spin_lock_irqsave(&handler->lock, flags);
+ __mmu_int_rb_remove(node, &handler->root);
+ list_del(&node->list); /* remove from LRU list */
+ spin_unlock_irqrestore(&handler->lock, flags);
- rcu_read_lock();
- list_for_each_entry_rcu(handler, &mmu_rb_handlers, list) {
- if (handler->root == root)
- goto unlock;
- }
- handler = NULL;
-unlock:
- rcu_read_unlock();
- return handler;
+ handler->ops->remove(handler->ops_arg, node);
}
static inline void mmu_notifier_page(struct mmu_notifier *mn,
@@ -304,9 +305,10 @@ static void mmu_notifier_mem_invalidate(struct mmu_notifier *mn,
{
struct mmu_rb_handler *handler =
container_of(mn, struct mmu_rb_handler, mn);
- struct rb_root *root = handler->root;
+ struct rb_root *root = &handler->root;
struct mmu_rb_node *node, *ptr = NULL;
unsigned long flags;
+ bool added = false;
spin_lock_irqsave(&handler->lock, flags);
for (node = __mmu_int_rb_iter_first(root, start, end - 1);
@@ -315,11 +317,53 @@ static void mmu_notifier_mem_invalidate(struct mmu_notifier *mn,
ptr = __mmu_int_rb_iter_next(node, start, end - 1);
hfi1_cdbg(MMU, "Invalidating node addr 0x%llx, len %u",
node->addr, node->len);
- if (handler->ops->invalidate(root, node)) {
+ if (handler->ops->invalidate(handler->ops_arg, node)) {
__mmu_int_rb_remove(node, root);
- if (handler->ops->remove)
- handler->ops->remove(root, node, mm);
+ /* move from LRU list to delete list */
+ list_move(&node->list, &handler->del_list);
+ added = true;
}
}
spin_unlock_irqrestore(&handler->lock, flags);
+
+ if (added)
+ queue_work(handler->wq, &handler->del_work);
+}
+
+/*
+ * Call the remove function for the given handler and the list. This
+ * is expected to be called with a delete list extracted from handler.
+ * The caller should not be holding the handler lock.
+ */
+static void do_remove(struct mmu_rb_handler *handler,
+ struct list_head *del_list)
+{
+ struct mmu_rb_node *node;
+
+ while (!list_empty(del_list)) {
+ node = list_first_entry(del_list, struct mmu_rb_node, list);
+ list_del(&node->list);
+ handler->ops->remove(handler->ops_arg, node);
+ }
+}
+
+/*
+ * Work queue function to remove all nodes that have been queued up to
+ * be removed. The key feature is that mm->mmap_sem is not being held
+ * and the remove callback can sleep while taking it, if needed.
+ */
+static void handle_remove(struct work_struct *work)
+{
+ struct mmu_rb_handler *handler = container_of(work,
+ struct mmu_rb_handler,
+ del_work);
+ struct list_head del_list;
+ unsigned long flags;
+
+ /* remove anything that is queued to get removed */
+ spin_lock_irqsave(&handler->lock, flags);
+ list_replace_init(&handler->del_list, &del_list);
+ spin_unlock_irqrestore(&handler->lock, flags);
+
+ do_remove(handler, &del_list);
}
diff --git a/drivers/infiniband/hw/hfi1/mmu_rb.h b/drivers/infiniband/hw/hfi1/mmu_rb.h
index 7a57b9c49d27..754f6ebf13fb 100644
--- a/drivers/infiniband/hw/hfi1/mmu_rb.h
+++ b/drivers/infiniband/hw/hfi1/mmu_rb.h
@@ -54,23 +54,34 @@ struct mmu_rb_node {
unsigned long len;
unsigned long __last;
struct rb_node node;
+ struct list_head list;
};
+/*
+ * NOTE: filter, insert, invalidate, and evict must not sleep. Only remove is
+ * allowed to sleep.
+ */
struct mmu_rb_ops {
- bool (*filter)(struct mmu_rb_node *, unsigned long, unsigned long);
- int (*insert)(struct rb_root *, struct mmu_rb_node *);
- void (*remove)(struct rb_root *, struct mmu_rb_node *,
- struct mm_struct *);
- int (*invalidate)(struct rb_root *, struct mmu_rb_node *);
+ bool (*filter)(struct mmu_rb_node *node, unsigned long addr,
+ unsigned long len);
+ int (*insert)(void *ops_arg, struct mmu_rb_node *mnode);
+ void (*remove)(void *ops_arg, struct mmu_rb_node *mnode);
+ int (*invalidate)(void *ops_arg, struct mmu_rb_node *node);
+ int (*evict)(void *ops_arg, struct mmu_rb_node *mnode,
+ void *evict_arg, bool *stop);
};
-int hfi1_mmu_rb_register(struct rb_root *root, struct mmu_rb_ops *ops);
-void hfi1_mmu_rb_unregister(struct rb_root *);
-int hfi1_mmu_rb_insert(struct rb_root *, struct mmu_rb_node *);
-void hfi1_mmu_rb_remove(struct rb_root *, struct mmu_rb_node *);
-struct mmu_rb_node *hfi1_mmu_rb_search(struct rb_root *, unsigned long,
- unsigned long);
-struct mmu_rb_node *hfi1_mmu_rb_extract(struct rb_root *, unsigned long,
- unsigned long);
+int hfi1_mmu_rb_register(void *ops_arg, struct mm_struct *mm,
+ struct mmu_rb_ops *ops,
+ struct workqueue_struct *wq,
+ struct mmu_rb_handler **handler);
+void hfi1_mmu_rb_unregister(struct mmu_rb_handler *handler);
+int hfi1_mmu_rb_insert(struct mmu_rb_handler *handler,
+ struct mmu_rb_node *mnode);
+void hfi1_mmu_rb_evict(struct mmu_rb_handler *handler, void *evict_arg);
+void hfi1_mmu_rb_remove(struct mmu_rb_handler *handler,
+ struct mmu_rb_node *mnode);
+struct mmu_rb_node *hfi1_mmu_rb_extract(struct mmu_rb_handler *handler,
+ unsigned long addr, unsigned long len);
#endif /* _HFI1_MMU_RB_H */
diff --git a/drivers/infiniband/hw/hfi1/pcie.c b/drivers/infiniband/hw/hfi1/pcie.c
index 0bac21e6a658..89c68da1c273 100644
--- a/drivers/infiniband/hw/hfi1/pcie.c
+++ b/drivers/infiniband/hw/hfi1/pcie.c
@@ -679,6 +679,10 @@ static uint pcie_pset = UNSET_PSET;
module_param(pcie_pset, uint, S_IRUGO);
MODULE_PARM_DESC(pcie_pset, "PCIe Eq Pset value to use, range is 0-10");
+static uint pcie_ctle = 1; /* discrete on, integrated off */
+module_param(pcie_ctle, uint, S_IRUGO);
+MODULE_PARM_DESC(pcie_ctle, "PCIe static CTLE mode, bit 0 - discrete on/off, bit 1 - integrated on/off");
+
/* equalization columns */
#define PREC 0
#define ATTN 1
@@ -716,6 +720,36 @@ static const u8 integrated_preliminary_eq[11][3] = {
{ 0x00, 0x1e, 0x0a }, /* p10 */
};
+static const u8 discrete_ctle_tunings[11][4] = {
+ /* DC LF HF BW */
+ { 0x48, 0x0b, 0x04, 0x04 }, /* p0 */
+ { 0x60, 0x05, 0x0f, 0x0a }, /* p1 */
+ { 0x50, 0x09, 0x06, 0x06 }, /* p2 */
+ { 0x68, 0x05, 0x0f, 0x0a }, /* p3 */
+ { 0x80, 0x05, 0x0f, 0x0a }, /* p4 */
+ { 0x70, 0x05, 0x0f, 0x0a }, /* p5 */
+ { 0x68, 0x05, 0x0f, 0x0a }, /* p6 */
+ { 0x38, 0x0f, 0x00, 0x00 }, /* p7 */
+ { 0x48, 0x09, 0x06, 0x06 }, /* p8 */
+ { 0x60, 0x05, 0x0f, 0x0a }, /* p9 */
+ { 0x38, 0x0f, 0x00, 0x00 }, /* p10 */
+};
+
+static const u8 integrated_ctle_tunings[11][4] = {
+ /* DC LF HF BW */
+ { 0x38, 0x0f, 0x00, 0x00 }, /* p0 */
+ { 0x38, 0x0f, 0x00, 0x00 }, /* p1 */
+ { 0x38, 0x0f, 0x00, 0x00 }, /* p2 */
+ { 0x38, 0x0f, 0x00, 0x00 }, /* p3 */
+ { 0x58, 0x0a, 0x05, 0x05 }, /* p4 */
+ { 0x48, 0x0a, 0x05, 0x05 }, /* p5 */
+ { 0x40, 0x0a, 0x05, 0x05 }, /* p6 */
+ { 0x38, 0x0f, 0x00, 0x00 }, /* p7 */
+ { 0x38, 0x0f, 0x00, 0x00 }, /* p8 */
+ { 0x38, 0x09, 0x06, 0x06 }, /* p9 */
+ { 0x38, 0x0e, 0x01, 0x01 }, /* p10 */
+};
+
/* helper to format the value to write to hardware */
#define eq_value(pre, curr, post) \
((((u32)(pre)) << \
@@ -951,11 +985,14 @@ int do_pcie_gen3_transition(struct hfi1_devdata *dd)
u32 status, err;
int ret;
int do_retry, retry_count = 0;
+ int intnum = 0;
uint default_pset;
u16 target_vector, target_speed;
u16 lnkctl2, vendor;
u8 div;
const u8 (*eq)[3];
+ const u8 (*ctle_tunings)[4];
+ uint static_ctle_mode;
int return_error = 0;
/* PCIe Gen3 is for the ASIC only */
@@ -1089,6 +1126,9 @@ retry:
div = 3;
eq = discrete_preliminary_eq;
default_pset = DEFAULT_DISCRETE_PSET;
+ ctle_tunings = discrete_ctle_tunings;
+ /* bit 0 - discrete on/off */
+ static_ctle_mode = pcie_ctle & 0x1;
} else {
/* 400mV, FS=29, LF = 9 */
fs = 29;
@@ -1096,6 +1136,9 @@ retry:
div = 1;
eq = integrated_preliminary_eq;
default_pset = DEFAULT_MCP_PSET;
+ ctle_tunings = integrated_ctle_tunings;
+ /* bit 1 - integrated on/off */
+ static_ctle_mode = (pcie_ctle >> 1) & 0x1;
}
pci_write_config_dword(dd->pcidev, PCIE_CFG_REG_PL101,
(fs <<
@@ -1135,16 +1178,33 @@ retry:
* step 5c: Program gasket interrupts
*/
/* set the Rx Bit Rate to REFCLK ratio */
- write_gasket_interrupt(dd, 0, 0x0006, 0x0050);
+ write_gasket_interrupt(dd, intnum++, 0x0006, 0x0050);
/* disable pCal for PCIe Gen3 RX equalization */
- write_gasket_interrupt(dd, 1, 0x0026, 0x5b01);
+ /* select adaptive or static CTLE */
+ write_gasket_interrupt(dd, intnum++, 0x0026,
+ 0x5b01 | (static_ctle_mode << 3));
/*
* Enable iCal for PCIe Gen3 RX equalization, and set which
* evaluation of RX_EQ_EVAL will launch the iCal procedure.
*/
- write_gasket_interrupt(dd, 2, 0x0026, 0x5202);
+ write_gasket_interrupt(dd, intnum++, 0x0026, 0x5202);
+
+ if (static_ctle_mode) {
+ /* apply static CTLE tunings */
+ u8 pcie_dc, pcie_lf, pcie_hf, pcie_bw;
+
+ pcie_dc = ctle_tunings[pcie_pset][0];
+ pcie_lf = ctle_tunings[pcie_pset][1];
+ pcie_hf = ctle_tunings[pcie_pset][2];
+ pcie_bw = ctle_tunings[pcie_pset][3];
+ write_gasket_interrupt(dd, intnum++, 0x0026, 0x0200 | pcie_dc);
+ write_gasket_interrupt(dd, intnum++, 0x0026, 0x0100 | pcie_lf);
+ write_gasket_interrupt(dd, intnum++, 0x0026, 0x0000 | pcie_hf);
+ write_gasket_interrupt(dd, intnum++, 0x0026, 0x5500 | pcie_bw);
+ }
+
/* terminate list */
- write_gasket_interrupt(dd, 3, 0x0000, 0x0000);
+ write_gasket_interrupt(dd, intnum++, 0x0000, 0x0000);
/*
* step 5d: program XMT margin
diff --git a/drivers/infiniband/hw/hfi1/pio.c b/drivers/infiniband/hw/hfi1/pio.c
index d4022450b73f..ac1bf4a73571 100644
--- a/drivers/infiniband/hw/hfi1/pio.c
+++ b/drivers/infiniband/hw/hfi1/pio.c
@@ -1952,13 +1952,17 @@ int init_pervl_scs(struct hfi1_devdata *dd)
dd->vld[15].sc = sc_alloc(dd, SC_VL15,
dd->rcd[0]->rcvhdrqentsize, dd->node);
if (!dd->vld[15].sc)
- goto nomem;
+ return -ENOMEM;
+
hfi1_init_ctxt(dd->vld[15].sc);
dd->vld[15].mtu = enum_to_mtu(OPA_MTU_2048);
- dd->kernel_send_context = kmalloc_node(dd->num_send_contexts *
+ dd->kernel_send_context = kzalloc_node(dd->num_send_contexts *
sizeof(struct send_context *),
GFP_KERNEL, dd->node);
+ if (!dd->kernel_send_context)
+ goto freesc15;
+
dd->kernel_send_context[0] = dd->vld[15].sc;
for (i = 0; i < num_vls; i++) {
@@ -2010,12 +2014,21 @@ int init_pervl_scs(struct hfi1_devdata *dd)
if (pio_map_init(dd, ppd->port - 1, num_vls, NULL))
goto nomem;
return 0;
+
nomem:
- sc_free(dd->vld[15].sc);
- for (i = 0; i < num_vls; i++)
+ for (i = 0; i < num_vls; i++) {
sc_free(dd->vld[i].sc);
+ dd->vld[i].sc = NULL;
+ }
+
for (i = num_vls; i < INIT_SC_PER_VL * num_vls; i++)
sc_free(dd->kernel_send_context[i + 1]);
+
+ kfree(dd->kernel_send_context);
+ dd->kernel_send_context = NULL;
+
+freesc15:
+ sc_free(dd->vld[15].sc);
return -ENOMEM;
}
diff --git a/drivers/infiniband/hw/hfi1/platform.c b/drivers/infiniband/hw/hfi1/platform.c
index 03df9322f862..965c8aef0c60 100644
--- a/drivers/infiniband/hw/hfi1/platform.c
+++ b/drivers/infiniband/hw/hfi1/platform.c
@@ -537,20 +537,6 @@ static void apply_tunings(
u8 precur = 0, attn = 0, postcur = 0, external_device_config = 0;
u8 *cache = ppd->qsfp_info.cache;
- /* Enable external device config if channel is limiting active */
- read_8051_config(ppd->dd, LINK_OPTIMIZATION_SETTINGS,
- GENERAL_CONFIG, &config_data);
- config_data &= ~(0xff << ENABLE_EXT_DEV_CONFIG_SHIFT);
- config_data |= ((u32)limiting_active << ENABLE_EXT_DEV_CONFIG_SHIFT);
- ret = load_8051_config(ppd->dd, LINK_OPTIMIZATION_SETTINGS,
- GENERAL_CONFIG, config_data);
- if (ret != HCMD_SUCCESS)
- dd_dev_err(
- ppd->dd,
- "%s: Failed to set enable external device config\n",
- __func__);
-
- config_data = 0; /* re-init */
/* Pass tuning method to 8051 */
read_8051_config(ppd->dd, LINK_TUNING_PARAMETERS, GENERAL_CONFIG,
&config_data);
@@ -638,9 +624,13 @@ static int tune_active_qsfp(struct hfi1_pportdata *ppd, u32 *ptr_tx_preset,
if (ret)
return ret;
+ /*
+ * We'll change the QSFP memory contents from here on out, thus we set a
+ * flag here to remind ourselves to reset the QSFP module. This prevents
+ * reuse of stale settings established in our previous pass through.
+ */
if (ppd->qsfp_info.reset_needed) {
reset_qsfp(ppd);
- ppd->qsfp_info.reset_needed = 0;
refresh_qsfp_cache(ppd, &ppd->qsfp_info);
} else {
ppd->qsfp_info.reset_needed = 1;
diff --git a/drivers/infiniband/hw/hfi1/qp.c b/drivers/infiniband/hw/hfi1/qp.c
index 1a942ffba4cb..a5aa3517e7d5 100644
--- a/drivers/infiniband/hw/hfi1/qp.c
+++ b/drivers/infiniband/hw/hfi1/qp.c
@@ -52,6 +52,7 @@
#include <linux/seq_file.h>
#include <rdma/rdma_vt.h>
#include <rdma/rdmavt_qp.h>
+#include <rdma/ib_verbs.h>
#include "hfi.h"
#include "qp.h"
@@ -115,6 +116,66 @@ static const u16 credit_table[31] = {
32768 /* 1E */
};
+const struct rvt_operation_params hfi1_post_parms[RVT_OPERATION_MAX] = {
+[IB_WR_RDMA_WRITE] = {
+ .length = sizeof(struct ib_rdma_wr),
+ .qpt_support = BIT(IB_QPT_UC) | BIT(IB_QPT_RC),
+},
+
+[IB_WR_RDMA_READ] = {
+ .length = sizeof(struct ib_rdma_wr),
+ .qpt_support = BIT(IB_QPT_RC),
+ .flags = RVT_OPERATION_ATOMIC,
+},
+
+[IB_WR_ATOMIC_CMP_AND_SWP] = {
+ .length = sizeof(struct ib_atomic_wr),
+ .qpt_support = BIT(IB_QPT_RC),
+ .flags = RVT_OPERATION_ATOMIC | RVT_OPERATION_ATOMIC_SGE,
+},
+
+[IB_WR_ATOMIC_FETCH_AND_ADD] = {
+ .length = sizeof(struct ib_atomic_wr),
+ .qpt_support = BIT(IB_QPT_RC),
+ .flags = RVT_OPERATION_ATOMIC | RVT_OPERATION_ATOMIC_SGE,
+},
+
+[IB_WR_RDMA_WRITE_WITH_IMM] = {
+ .length = sizeof(struct ib_rdma_wr),
+ .qpt_support = BIT(IB_QPT_UC) | BIT(IB_QPT_RC),
+},
+
+[IB_WR_SEND] = {
+ .length = sizeof(struct ib_send_wr),
+ .qpt_support = BIT(IB_QPT_UD) | BIT(IB_QPT_SMI) | BIT(IB_QPT_GSI) |
+ BIT(IB_QPT_UC) | BIT(IB_QPT_RC),
+},
+
+[IB_WR_SEND_WITH_IMM] = {
+ .length = sizeof(struct ib_send_wr),
+ .qpt_support = BIT(IB_QPT_UD) | BIT(IB_QPT_SMI) | BIT(IB_QPT_GSI) |
+ BIT(IB_QPT_UC) | BIT(IB_QPT_RC),
+},
+
+[IB_WR_REG_MR] = {
+ .length = sizeof(struct ib_reg_wr),
+ .qpt_support = BIT(IB_QPT_UC) | BIT(IB_QPT_RC),
+ .flags = RVT_OPERATION_LOCAL,
+},
+
+[IB_WR_LOCAL_INV] = {
+ .length = sizeof(struct ib_send_wr),
+ .qpt_support = BIT(IB_QPT_UC) | BIT(IB_QPT_RC),
+ .flags = RVT_OPERATION_LOCAL,
+},
+
+[IB_WR_SEND_WITH_INV] = {
+ .length = sizeof(struct ib_send_wr),
+ .qpt_support = BIT(IB_QPT_RC),
+},
+
+};
+
static void flush_tx_list(struct rvt_qp *qp)
{
struct hfi1_qp_priv *priv = qp->priv;
@@ -745,8 +806,9 @@ void *qp_priv_alloc(struct rvt_dev_info *rdi, struct rvt_qp *qp,
priv->owner = qp;
- priv->s_hdr = kzalloc_node(sizeof(*priv->s_hdr), gfp, rdi->dparms.node);
- if (!priv->s_hdr) {
+ priv->s_ahg = kzalloc_node(sizeof(*priv->s_ahg), gfp,
+ rdi->dparms.node);
+ if (!priv->s_ahg) {
kfree(priv);
return ERR_PTR(-ENOMEM);
}
@@ -759,7 +821,7 @@ void qp_priv_free(struct rvt_dev_info *rdi, struct rvt_qp *qp)
{
struct hfi1_qp_priv *priv = qp->priv;
- kfree(priv->s_hdr);
+ kfree(priv->s_ahg);
kfree(priv);
}
diff --git a/drivers/infiniband/hw/hfi1/qp.h b/drivers/infiniband/hw/hfi1/qp.h
index e7bc8d6cf681..587d84d65bb8 100644
--- a/drivers/infiniband/hw/hfi1/qp.h
+++ b/drivers/infiniband/hw/hfi1/qp.h
@@ -54,6 +54,8 @@
extern unsigned int hfi1_qp_table_size;
+extern const struct rvt_operation_params hfi1_post_parms[];
+
/*
* free_ahg - clear ahg from QP
*/
@@ -61,7 +63,7 @@ static inline void clear_ahg(struct rvt_qp *qp)
{
struct hfi1_qp_priv *priv = qp->priv;
- priv->s_hdr->ahgcount = 0;
+ priv->s_ahg->ahgcount = 0;
qp->s_flags &= ~(RVT_S_AHG_VALID | RVT_S_AHG_CLEAR);
if (priv->s_sde && qp->s_ahgidx >= 0)
sdma_ahg_free(priv->s_sde, qp->s_ahgidx);
diff --git a/drivers/infiniband/hw/hfi1/qsfp.c b/drivers/infiniband/hw/hfi1/qsfp.c
index 9fb561682c66..a207717ade2a 100644
--- a/drivers/infiniband/hw/hfi1/qsfp.c
+++ b/drivers/infiniband/hw/hfi1/qsfp.c
@@ -50,46 +50,285 @@
#include <linux/vmalloc.h>
#include "hfi.h"
-#include "twsi.h"
+
+/* for the given bus number, return the CSR for reading an i2c line */
+static inline u32 i2c_in_csr(u32 bus_num)
+{
+ return bus_num ? ASIC_QSFP2_IN : ASIC_QSFP1_IN;
+}
+
+/* for the given bus number, return the CSR for writing an i2c line */
+static inline u32 i2c_oe_csr(u32 bus_num)
+{
+ return bus_num ? ASIC_QSFP2_OE : ASIC_QSFP1_OE;
+}
+
+static void hfi1_setsda(void *data, int state)
+{
+ struct hfi1_i2c_bus *bus = (struct hfi1_i2c_bus *)data;
+ struct hfi1_devdata *dd = bus->controlling_dd;
+ u64 reg;
+ u32 target_oe;
+
+ target_oe = i2c_oe_csr(bus->num);
+ reg = read_csr(dd, target_oe);
+ /*
+ * The OE bit value is inverted and connected to the pin. When
+ * OE is 0 the pin is left to be pulled up, when the OE is 1
+ * the pin is driven low. This matches the "open drain" or "open
+ * collector" convention.
+ */
+ if (state)
+ reg &= ~QSFP_HFI0_I2CDAT;
+ else
+ reg |= QSFP_HFI0_I2CDAT;
+ write_csr(dd, target_oe, reg);
+ /* do a read to force the write into the chip */
+ (void)read_csr(dd, target_oe);
+}
+
+static void hfi1_setscl(void *data, int state)
+{
+ struct hfi1_i2c_bus *bus = (struct hfi1_i2c_bus *)data;
+ struct hfi1_devdata *dd = bus->controlling_dd;
+ u64 reg;
+ u32 target_oe;
+
+ target_oe = i2c_oe_csr(bus->num);
+ reg = read_csr(dd, target_oe);
+ /*
+ * The OE bit value is inverted and connected to the pin. When
+ * OE is 0 the pin is left to be pulled up, when the OE is 1
+ * the pin is driven low. This matches the "open drain" or "open
+ * collector" convention.
+ */
+ if (state)
+ reg &= ~QSFP_HFI0_I2CCLK;
+ else
+ reg |= QSFP_HFI0_I2CCLK;
+ write_csr(dd, target_oe, reg);
+ /* do a read to force the write into the chip */
+ (void)read_csr(dd, target_oe);
+}
+
+static int hfi1_getsda(void *data)
+{
+ struct hfi1_i2c_bus *bus = (struct hfi1_i2c_bus *)data;
+ u64 reg;
+ u32 target_in;
+
+ hfi1_setsda(data, 1); /* clear OE so we do not pull line down */
+ udelay(2); /* 1us pull up + 250ns hold */
+
+ target_in = i2c_in_csr(bus->num);
+ reg = read_csr(bus->controlling_dd, target_in);
+ return !!(reg & QSFP_HFI0_I2CDAT);
+}
+
+static int hfi1_getscl(void *data)
+{
+ struct hfi1_i2c_bus *bus = (struct hfi1_i2c_bus *)data;
+ u64 reg;
+ u32 target_in;
+
+ hfi1_setscl(data, 1); /* clear OE so we do not pull line down */
+ udelay(2); /* 1us pull up + 250ns hold */
+
+ target_in = i2c_in_csr(bus->num);
+ reg = read_csr(bus->controlling_dd, target_in);
+ return !!(reg & QSFP_HFI0_I2CCLK);
+}
/*
- * QSFP support for hfi driver, using "Two Wire Serial Interface" driver
- * in twsi.c
+ * Allocate and initialize the given i2c bus number.
+ * Returns NULL on failure.
*/
-#define I2C_MAX_RETRY 4
+static struct hfi1_i2c_bus *init_i2c_bus(struct hfi1_devdata *dd,
+ struct hfi1_asic_data *ad, int num)
+{
+ struct hfi1_i2c_bus *bus;
+ int ret;
+
+ bus = kzalloc(sizeof(*bus), GFP_KERNEL);
+ if (!bus)
+ return NULL;
+
+ bus->controlling_dd = dd;
+ bus->num = num; /* our bus number */
+
+ bus->algo.setsda = hfi1_setsda;
+ bus->algo.setscl = hfi1_setscl;
+ bus->algo.getsda = hfi1_getsda;
+ bus->algo.getscl = hfi1_getscl;
+ bus->algo.udelay = 5;
+ bus->algo.timeout = usecs_to_jiffies(50);
+ bus->algo.data = bus;
+
+ bus->adapter.owner = THIS_MODULE;
+ bus->adapter.algo_data = &bus->algo;
+ bus->adapter.dev.parent = &dd->pcidev->dev;
+ snprintf(bus->adapter.name, sizeof(bus->adapter.name),
+ "hfi1_i2c%d", num);
+
+ ret = i2c_bit_add_bus(&bus->adapter);
+ if (ret) {
+ dd_dev_info(dd, "%s: unable to add i2c bus %d, err %d\n",
+ __func__, num, ret);
+ kfree(bus);
+ return NULL;
+ }
+
+ return bus;
+}
/*
- * Raw i2c write. No set-up or lock checking.
+ * Initialize i2c buses.
+ * Return 0 on success, -errno on error.
*/
-static int __i2c_write(struct hfi1_pportdata *ppd, u32 target, int i2c_addr,
- int offset, void *bp, int len)
+int set_up_i2c(struct hfi1_devdata *dd, struct hfi1_asic_data *ad)
{
- struct hfi1_devdata *dd = ppd->dd;
- int ret, cnt;
- u8 *buff = bp;
+ ad->i2c_bus0 = init_i2c_bus(dd, ad, 0);
+ ad->i2c_bus1 = init_i2c_bus(dd, ad, 1);
+ if (!ad->i2c_bus0 || !ad->i2c_bus1)
+ return -ENOMEM;
+ return 0;
+};
- cnt = 0;
- while (cnt < len) {
- int wlen = len - cnt;
+static void clean_i2c_bus(struct hfi1_i2c_bus *bus)
+{
+ if (bus) {
+ i2c_del_adapter(&bus->adapter);
+ kfree(bus);
+ }
+}
- ret = hfi1_twsi_blk_wr(dd, target, i2c_addr, offset,
- buff + cnt, wlen);
- if (ret) {
- /* hfi1_twsi_blk_wr() 1 for error, else 0 */
- return -EIO;
- }
- offset += wlen;
- cnt += wlen;
+void clean_up_i2c(struct hfi1_devdata *dd, struct hfi1_asic_data *ad)
+{
+ clean_i2c_bus(ad->i2c_bus0);
+ ad->i2c_bus0 = NULL;
+ clean_i2c_bus(ad->i2c_bus1);
+ ad->i2c_bus1 = NULL;
+}
+
+static int i2c_bus_write(struct hfi1_devdata *dd, struct hfi1_i2c_bus *i2c,
+ u8 slave_addr, int offset, int offset_size,
+ u8 *data, u16 len)
+{
+ int ret;
+ int num_msgs;
+ u8 offset_bytes[2];
+ struct i2c_msg msgs[2];
+
+ switch (offset_size) {
+ case 0:
+ num_msgs = 1;
+ msgs[0].addr = slave_addr;
+ msgs[0].flags = 0;
+ msgs[0].len = len;
+ msgs[0].buf = data;
+ break;
+ case 2:
+ offset_bytes[1] = (offset >> 8) & 0xff;
+ /* fall through */
+ case 1:
+ num_msgs = 2;
+ offset_bytes[0] = offset & 0xff;
+
+ msgs[0].addr = slave_addr;
+ msgs[0].flags = 0;
+ msgs[0].len = offset_size;
+ msgs[0].buf = offset_bytes;
+
+ msgs[1].addr = slave_addr;
+ msgs[1].flags = I2C_M_NOSTART,
+ msgs[1].len = len;
+ msgs[1].buf = data;
+ break;
+ default:
+ return -EINVAL;
}
- /* Must wait min 20us between qsfp i2c transactions */
- udelay(20);
+ i2c->controlling_dd = dd;
+ ret = i2c_transfer(&i2c->adapter, msgs, num_msgs);
+ if (ret != num_msgs) {
+ dd_dev_err(dd, "%s: bus %d, i2c slave 0x%x, offset 0x%x, len 0x%x; write failed, ret %d\n",
+ __func__, i2c->num, slave_addr, offset, len, ret);
+ return ret < 0 ? ret : -EIO;
+ }
+ return 0;
+}
+
+static int i2c_bus_read(struct hfi1_devdata *dd, struct hfi1_i2c_bus *bus,
+ u8 slave_addr, int offset, int offset_size,
+ u8 *data, u16 len)
+{
+ int ret;
+ int num_msgs;
+ u8 offset_bytes[2];
+ struct i2c_msg msgs[2];
+
+ switch (offset_size) {
+ case 0:
+ num_msgs = 1;
+ msgs[0].addr = slave_addr;
+ msgs[0].flags = I2C_M_RD;
+ msgs[0].len = len;
+ msgs[0].buf = data;
+ break;
+ case 2:
+ offset_bytes[1] = (offset >> 8) & 0xff;
+ /* fall through */
+ case 1:
+ num_msgs = 2;
+ offset_bytes[0] = offset & 0xff;
+
+ msgs[0].addr = slave_addr;
+ msgs[0].flags = 0;
+ msgs[0].len = offset_size;
+ msgs[0].buf = offset_bytes;
+
+ msgs[1].addr = slave_addr;
+ msgs[1].flags = I2C_M_RD,
+ msgs[1].len = len;
+ msgs[1].buf = data;
+ break;
+ default:
+ return -EINVAL;
+ }
- return cnt;
+ bus->controlling_dd = dd;
+ ret = i2c_transfer(&bus->adapter, msgs, num_msgs);
+ if (ret != num_msgs) {
+ dd_dev_err(dd, "%s: bus %d, i2c slave 0x%x, offset 0x%x, len 0x%x; read failed, ret %d\n",
+ __func__, bus->num, slave_addr, offset, len, ret);
+ return ret < 0 ? ret : -EIO;
+ }
+ return 0;
+}
+
+/*
+ * Raw i2c write. No set-up or lock checking.
+ *
+ * Return 0 on success, -errno on error.
+ */
+static int __i2c_write(struct hfi1_pportdata *ppd, u32 target, int i2c_addr,
+ int offset, void *bp, int len)
+{
+ struct hfi1_devdata *dd = ppd->dd;
+ struct hfi1_i2c_bus *bus;
+ u8 slave_addr;
+ int offset_size;
+
+ bus = target ? dd->asic_data->i2c_bus1 : dd->asic_data->i2c_bus0;
+ slave_addr = (i2c_addr & 0xff) >> 1; /* convert to 7-bit addr */
+ offset_size = (i2c_addr >> 8) & 0x3;
+ return i2c_bus_write(dd, bus, slave_addr, offset, offset_size, bp, len);
}
/*
* Caller must hold the i2c chain resource.
+ *
+ * Return number of bytes written, or -errno.
*/
int i2c_write(struct hfi1_pportdata *ppd, u32 target, int i2c_addr, int offset,
void *bp, int len)
@@ -99,63 +338,36 @@ int i2c_write(struct hfi1_pportdata *ppd, u32 target, int i2c_addr, int offset,
if (!check_chip_resource(ppd->dd, i2c_target(target), __func__))
return -EACCES;
- /* make sure the TWSI bus is in a sane state */
- ret = hfi1_twsi_reset(ppd->dd, target);
- if (ret) {
- hfi1_dev_porterr(ppd->dd, ppd->port,
- "I2C chain %d write interface reset failed\n",
- target);
+ ret = __i2c_write(ppd, target, i2c_addr, offset, bp, len);
+ if (ret)
return ret;
- }
- return __i2c_write(ppd, target, i2c_addr, offset, bp, len);
+ return len;
}
/*
* Raw i2c read. No set-up or lock checking.
+ *
+ * Return 0 on success, -errno on error.
*/
static int __i2c_read(struct hfi1_pportdata *ppd, u32 target, int i2c_addr,
int offset, void *bp, int len)
{
struct hfi1_devdata *dd = ppd->dd;
- int ret, cnt, pass = 0;
- int orig_offset = offset;
-
- cnt = 0;
- while (cnt < len) {
- int rlen = len - cnt;
-
- ret = hfi1_twsi_blk_rd(dd, target, i2c_addr, offset,
- bp + cnt, rlen);
- /* Some QSFP's fail first try. Retry as experiment */
- if (ret && cnt == 0 && ++pass < I2C_MAX_RETRY)
- continue;
- if (ret) {
- /* hfi1_twsi_blk_rd() 1 for error, else 0 */
- ret = -EIO;
- goto exit;
- }
- offset += rlen;
- cnt += rlen;
- }
-
- ret = cnt;
-
-exit:
- if (ret < 0) {
- hfi1_dev_porterr(dd, ppd->port,
- "I2C chain %d read failed, addr 0x%x, offset 0x%x, len %d\n",
- target, i2c_addr, orig_offset, len);
- }
-
- /* Must wait min 20us between qsfp i2c transactions */
- udelay(20);
-
- return ret;
+ struct hfi1_i2c_bus *bus;
+ u8 slave_addr;
+ int offset_size;
+
+ bus = target ? dd->asic_data->i2c_bus1 : dd->asic_data->i2c_bus0;
+ slave_addr = (i2c_addr & 0xff) >> 1; /* convert to 7-bit addr */
+ offset_size = (i2c_addr >> 8) & 0x3;
+ return i2c_bus_read(dd, bus, slave_addr, offset, offset_size, bp, len);
}
/*
* Caller must hold the i2c chain resource.
+ *
+ * Return number of bytes read, or -errno.
*/
int i2c_read(struct hfi1_pportdata *ppd, u32 target, int i2c_addr, int offset,
void *bp, int len)
@@ -165,16 +377,11 @@ int i2c_read(struct hfi1_pportdata *ppd, u32 target, int i2c_addr, int offset,
if (!check_chip_resource(ppd->dd, i2c_target(target), __func__))
return -EACCES;
- /* make sure the TWSI bus is in a sane state */
- ret = hfi1_twsi_reset(ppd->dd, target);
- if (ret) {
- hfi1_dev_porterr(ppd->dd, ppd->port,
- "I2C chain %d read interface reset failed\n",
- target);
+ ret = __i2c_read(ppd, target, i2c_addr, offset, bp, len);
+ if (ret)
return ret;
- }
- return __i2c_read(ppd, target, i2c_addr, offset, bp, len);
+ return len;
}
/*
@@ -182,6 +389,8 @@ int i2c_read(struct hfi1_pportdata *ppd, u32 target, int i2c_addr, int offset,
* by writing @addr = ((256 * n) + m)
*
* Caller must hold the i2c chain resource.
+ *
+ * Return number of bytes written or -errno.
*/
int qsfp_write(struct hfi1_pportdata *ppd, u32 target, int addr, void *bp,
int len)
@@ -189,21 +398,12 @@ int qsfp_write(struct hfi1_pportdata *ppd, u32 target, int addr, void *bp,
int count = 0;
int offset;
int nwrite;
- int ret;
+ int ret = 0;
u8 page;
if (!check_chip_resource(ppd->dd, i2c_target(target), __func__))
return -EACCES;
- /* make sure the TWSI bus is in a sane state */
- ret = hfi1_twsi_reset(ppd->dd, target);
- if (ret) {
- hfi1_dev_porterr(ppd->dd, ppd->port,
- "QSFP chain %d write interface reset failed\n",
- target);
- return ret;
- }
-
while (count < len) {
/*
* Set the qsfp page based on a zero-based address
@@ -213,11 +413,12 @@ int qsfp_write(struct hfi1_pportdata *ppd, u32 target, int addr, void *bp,
ret = __i2c_write(ppd, target, QSFP_DEV | QSFP_OFFSET_SIZE,
QSFP_PAGE_SELECT_BYTE_OFFS, &page, 1);
- if (ret != 1) {
+ /* QSFPs require a 5-10msec delay after write operations */
+ mdelay(5);
+ if (ret) {
hfi1_dev_porterr(ppd->dd, ppd->port,
"QSFP chain %d can't write QSFP_PAGE_SELECT_BYTE: %d\n",
target, ret);
- ret = -EIO;
break;
}
@@ -229,11 +430,13 @@ int qsfp_write(struct hfi1_pportdata *ppd, u32 target, int addr, void *bp,
ret = __i2c_write(ppd, target, QSFP_DEV | QSFP_OFFSET_SIZE,
offset, bp + count, nwrite);
- if (ret <= 0) /* stop on error or nothing written */
+ /* QSFPs require a 5-10msec delay after write operations */
+ mdelay(5);
+ if (ret) /* stop on error */
break;
- count += ret;
- addr += ret;
+ count += nwrite;
+ addr += nwrite;
}
if (ret < 0)
@@ -243,7 +446,7 @@ int qsfp_write(struct hfi1_pportdata *ppd, u32 target, int addr, void *bp,
/*
* Perform a stand-alone single QSFP write. Acquire the resource, do the
- * read, then release the resource.
+ * write, then release the resource.
*/
int one_qsfp_write(struct hfi1_pportdata *ppd, u32 target, int addr, void *bp,
int len)
@@ -266,6 +469,8 @@ int one_qsfp_write(struct hfi1_pportdata *ppd, u32 target, int addr, void *bp,
* by reading @addr = ((256 * n) + m)
*
* Caller must hold the i2c chain resource.
+ *
+ * Return the number of bytes read or -errno.
*/
int qsfp_read(struct hfi1_pportdata *ppd, u32 target, int addr, void *bp,
int len)
@@ -273,21 +478,12 @@ int qsfp_read(struct hfi1_pportdata *ppd, u32 target, int addr, void *bp,
int count = 0;
int offset;
int nread;
- int ret;
+ int ret = 0;
u8 page;
if (!check_chip_resource(ppd->dd, i2c_target(target), __func__))
return -EACCES;
- /* make sure the TWSI bus is in a sane state */
- ret = hfi1_twsi_reset(ppd->dd, target);
- if (ret) {
- hfi1_dev_porterr(ppd->dd, ppd->port,
- "QSFP chain %d read interface reset failed\n",
- target);
- return ret;
- }
-
while (count < len) {
/*
* Set the qsfp page based on a zero-based address
@@ -296,11 +492,12 @@ int qsfp_read(struct hfi1_pportdata *ppd, u32 target, int addr, void *bp,
page = (u8)(addr / QSFP_PAGESIZE);
ret = __i2c_write(ppd, target, QSFP_DEV | QSFP_OFFSET_SIZE,
QSFP_PAGE_SELECT_BYTE_OFFS, &page, 1);
- if (ret != 1) {
+ /* QSFPs require a 5-10msec delay after write operations */
+ mdelay(5);
+ if (ret) {
hfi1_dev_porterr(ppd->dd, ppd->port,
"QSFP chain %d can't write QSFP_PAGE_SELECT_BYTE: %d\n",
target, ret);
- ret = -EIO;
break;
}
@@ -310,15 +507,13 @@ int qsfp_read(struct hfi1_pportdata *ppd, u32 target, int addr, void *bp,
if (((addr % QSFP_RW_BOUNDARY) + nread) > QSFP_RW_BOUNDARY)
nread = QSFP_RW_BOUNDARY - (addr % QSFP_RW_BOUNDARY);
- /* QSFPs require a 5-10msec delay after write operations */
- mdelay(5);
ret = __i2c_read(ppd, target, QSFP_DEV | QSFP_OFFSET_SIZE,
offset, bp + count, nread);
- if (ret <= 0) /* stop on error or nothing read */
+ if (ret) /* stop on error */
break;
- count += ret;
- addr += ret;
+ count += nread;
+ addr += nread;
}
if (ret < 0)
diff --git a/drivers/infiniband/hw/hfi1/qsfp.h b/drivers/infiniband/hw/hfi1/qsfp.h
index dadc66c442b9..69275ebd9597 100644
--- a/drivers/infiniband/hw/hfi1/qsfp.h
+++ b/drivers/infiniband/hw/hfi1/qsfp.h
@@ -238,3 +238,6 @@ int one_qsfp_write(struct hfi1_pportdata *ppd, u32 target, int addr, void *bp,
int len);
int one_qsfp_read(struct hfi1_pportdata *ppd, u32 target, int addr, void *bp,
int len);
+struct hfi1_asic_data;
+int set_up_i2c(struct hfi1_devdata *dd, struct hfi1_asic_data *ad);
+void clean_up_i2c(struct hfi1_devdata *dd, struct hfi1_asic_data *ad);
diff --git a/drivers/infiniband/hw/hfi1/rc.c b/drivers/infiniband/hw/hfi1/rc.c
index 792f15eb8efe..5da190e6011b 100644
--- a/drivers/infiniband/hw/hfi1/rc.c
+++ b/drivers/infiniband/hw/hfi1/rc.c
@@ -477,6 +477,37 @@ int hfi1_make_rc_req(struct rvt_qp *qp, struct hfi1_pkt_state *ps)
qp->s_flags |= RVT_S_WAIT_FENCE;
goto bail;
}
+ /*
+ * Local operations are processed immediately
+ * after all prior requests have completed
+ */
+ if (wqe->wr.opcode == IB_WR_REG_MR ||
+ wqe->wr.opcode == IB_WR_LOCAL_INV) {
+ int local_ops = 0;
+ int err = 0;
+
+ if (qp->s_last != qp->s_cur)
+ goto bail;
+ if (++qp->s_cur == qp->s_size)
+ qp->s_cur = 0;
+ if (++qp->s_tail == qp->s_size)
+ qp->s_tail = 0;
+ if (!(wqe->wr.send_flags &
+ RVT_SEND_COMPLETION_ONLY)) {
+ err = rvt_invalidate_rkey(
+ qp,
+ wqe->wr.ex.invalidate_rkey);
+ local_ops = 1;
+ }
+ hfi1_send_complete(qp, wqe,
+ err ? IB_WC_LOC_PROT_ERR
+ : IB_WC_SUCCESS);
+ if (local_ops)
+ atomic_dec(&qp->local_ops_pending);
+ qp->s_hdrwords = 0;
+ goto done_free_tx;
+ }
+
newreq = 1;
qp->s_psn = wqe->psn;
}
@@ -491,6 +522,7 @@ int hfi1_make_rc_req(struct rvt_qp *qp, struct hfi1_pkt_state *ps)
switch (wqe->wr.opcode) {
case IB_WR_SEND:
case IB_WR_SEND_WITH_IMM:
+ case IB_WR_SEND_WITH_INV:
/* If no credit, return. */
if (!(qp->s_flags & RVT_S_UNLIMITED_CREDIT) &&
cmp_msn(wqe->ssn, qp->s_lsn + 1) > 0) {
@@ -504,11 +536,17 @@ int hfi1_make_rc_req(struct rvt_qp *qp, struct hfi1_pkt_state *ps)
}
if (wqe->wr.opcode == IB_WR_SEND) {
qp->s_state = OP(SEND_ONLY);
- } else {
+ } else if (wqe->wr.opcode == IB_WR_SEND_WITH_IMM) {
qp->s_state = OP(SEND_ONLY_WITH_IMMEDIATE);
/* Immediate data comes after the BTH */
ohdr->u.imm_data = wqe->wr.ex.imm_data;
hwords += 1;
+ } else {
+ qp->s_state = OP(SEND_ONLY_WITH_INVALIDATE);
+ /* Invalidate rkey comes after the BTH */
+ ohdr->u.ieth = cpu_to_be32(
+ wqe->wr.ex.invalidate_rkey);
+ hwords += 1;
}
if (wqe->wr.send_flags & IB_SEND_SOLICITED)
bth0 |= IB_BTH_SOLICITED;
@@ -671,11 +709,16 @@ int hfi1_make_rc_req(struct rvt_qp *qp, struct hfi1_pkt_state *ps)
}
if (wqe->wr.opcode == IB_WR_SEND) {
qp->s_state = OP(SEND_LAST);
- } else {
+ } else if (wqe->wr.opcode == IB_WR_SEND_WITH_IMM) {
qp->s_state = OP(SEND_LAST_WITH_IMMEDIATE);
/* Immediate data comes after the BTH */
ohdr->u.imm_data = wqe->wr.ex.imm_data;
hwords += 1;
+ } else {
+ qp->s_state = OP(SEND_LAST_WITH_INVALIDATE);
+ /* invalidate data comes after the BTH */
+ ohdr->u.ieth = cpu_to_be32(wqe->wr.ex.invalidate_rkey);
+ hwords += 1;
}
if (wqe->wr.send_flags & IB_SEND_SOLICITED)
bth0 |= IB_BTH_SOLICITED;
@@ -1047,7 +1090,7 @@ void hfi1_rc_timeout(unsigned long arg)
ibp->rvp.n_rc_timeouts++;
qp->s_flags &= ~RVT_S_TIMER;
del_timer(&qp->s_timer);
- trace_hfi1_rc_timeout(qp, qp->s_last_psn + 1);
+ trace_hfi1_timeout(qp, qp->s_last_psn + 1);
restart_rc(qp, qp->s_last_psn + 1, 1);
hfi1_schedule_send(qp);
}
@@ -1171,7 +1214,7 @@ void hfi1_rc_send_complete(struct rvt_qp *qp, struct hfi1_ib_header *hdr)
* If we were waiting for sends to complete before re-sending,
* and they are now complete, restart sending.
*/
- trace_hfi1_rc_sendcomplete(qp, psn);
+ trace_hfi1_sendcomplete(qp, psn);
if (qp->s_flags & RVT_S_WAIT_PSN &&
cmp_psn(qp->s_sending_psn, qp->s_sending_hpsn) > 0) {
qp->s_flags &= ~RVT_S_WAIT_PSN;
@@ -1567,7 +1610,7 @@ static void rc_rcv_resp(struct hfi1_ibport *ibp,
spin_lock_irqsave(&qp->s_lock, flags);
- trace_hfi1_rc_ack(qp, psn);
+ trace_hfi1_ack(qp, psn);
/* Ignore invalid responses. */
smp_read_barrier_depends(); /* see post_one_send */
@@ -1782,7 +1825,7 @@ static noinline int rc_rcv_error(struct hfi1_other_headers *ohdr, void *data,
u8 i, prev;
int old_req;
- trace_hfi1_rc_rcv_error(qp, psn);
+ trace_hfi1_rcv_error(qp, psn);
if (diff > 0) {
/*
* Packet sequence error.
@@ -2086,7 +2129,6 @@ void hfi1_rc_rcv(struct hfi1_packet *packet)
u32 tlen = packet->tlen;
struct rvt_qp *qp = packet->qp;
struct hfi1_ibport *ibp = to_iport(qp->ibqp.device, qp->port_num);
- struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
struct hfi1_other_headers *ohdr = packet->ohdr;
u32 bth0, opcode;
u32 hdrsize = packet->hlen;
@@ -2097,30 +2139,15 @@ void hfi1_rc_rcv(struct hfi1_packet *packet)
int diff;
struct ib_reth *reth;
unsigned long flags;
- u32 bth1;
int ret, is_fecn = 0;
int copy_last = 0;
+ u32 rkey;
bth0 = be32_to_cpu(ohdr->bth[0]);
if (hfi1_ruc_check_hdr(ibp, hdr, rcv_flags & HFI1_HAS_GRH, qp, bth0))
return;
- bth1 = be32_to_cpu(ohdr->bth[1]);
- if (unlikely(bth1 & (HFI1_BECN_SMASK | HFI1_FECN_SMASK))) {
- if (bth1 & HFI1_BECN_SMASK) {
- u16 rlid = qp->remote_ah_attr.dlid;
- u32 lqpn, rqpn;
-
- lqpn = qp->ibqp.qp_num;
- rqpn = qp->remote_qpn;
- process_becn(
- ppd,
- qp->remote_ah_attr.sl,
- rlid, lqpn, rqpn,
- IB_CC_SVCTYPE_RC);
- }
- is_fecn = bth1 & HFI1_FECN_SMASK;
- }
+ is_fecn = process_ecn(qp, packet, false);
psn = be32_to_cpu(ohdr->bth[2]);
opcode = (bth0 >> 24) & 0xff;
@@ -2154,7 +2181,8 @@ void hfi1_rc_rcv(struct hfi1_packet *packet)
case OP(SEND_MIDDLE):
if (opcode == OP(SEND_MIDDLE) ||
opcode == OP(SEND_LAST) ||
- opcode == OP(SEND_LAST_WITH_IMMEDIATE))
+ opcode == OP(SEND_LAST_WITH_IMMEDIATE) ||
+ opcode == OP(SEND_LAST_WITH_INVALIDATE))
break;
goto nack_inv;
@@ -2170,6 +2198,7 @@ void hfi1_rc_rcv(struct hfi1_packet *packet)
if (opcode == OP(SEND_MIDDLE) ||
opcode == OP(SEND_LAST) ||
opcode == OP(SEND_LAST_WITH_IMMEDIATE) ||
+ opcode == OP(SEND_LAST_WITH_INVALIDATE) ||
opcode == OP(RDMA_WRITE_MIDDLE) ||
opcode == OP(RDMA_WRITE_LAST) ||
opcode == OP(RDMA_WRITE_LAST_WITH_IMMEDIATE))
@@ -2218,6 +2247,7 @@ send_middle:
case OP(SEND_ONLY):
case OP(SEND_ONLY_WITH_IMMEDIATE):
+ case OP(SEND_ONLY_WITH_INVALIDATE):
ret = hfi1_rvt_get_rwqe(qp, 0);
if (ret < 0)
goto nack_op_err;
@@ -2226,12 +2256,22 @@ send_middle:
qp->r_rcv_len = 0;
if (opcode == OP(SEND_ONLY))
goto no_immediate_data;
+ if (opcode == OP(SEND_ONLY_WITH_INVALIDATE))
+ goto send_last_inv;
/* FALLTHROUGH for SEND_ONLY_WITH_IMMEDIATE */
case OP(SEND_LAST_WITH_IMMEDIATE):
send_last_imm:
wc.ex.imm_data = ohdr->u.imm_data;
wc.wc_flags = IB_WC_WITH_IMM;
goto send_last;
+ case OP(SEND_LAST_WITH_INVALIDATE):
+send_last_inv:
+ rkey = be32_to_cpu(ohdr->u.ieth);
+ if (rvt_invalidate_rkey(qp, rkey))
+ goto no_immediate_data;
+ wc.ex.invalidate_rkey = rkey;
+ wc.wc_flags = IB_WC_WITH_INVALIDATE;
+ goto send_last;
case OP(RDMA_WRITE_LAST):
copy_last = ibpd_to_rvtpd(qp->ibqp.pd)->user;
/* fall through */
diff --git a/drivers/infiniband/hw/hfi1/ruc.c b/drivers/infiniband/hw/hfi1/ruc.c
index a659aec3c3c6..48d5094f98e2 100644
--- a/drivers/infiniband/hw/hfi1/ruc.c
+++ b/drivers/infiniband/hw/hfi1/ruc.c
@@ -372,6 +372,7 @@ static void ruc_loopback(struct rvt_qp *sqp)
int ret;
int copy_last = 0;
u32 to;
+ int local_ops = 0;
rcu_read_lock();
@@ -440,11 +441,31 @@ again:
sqp->s_sge.num_sge = wqe->wr.num_sge;
sqp->s_len = wqe->length;
switch (wqe->wr.opcode) {
+ case IB_WR_REG_MR:
+ goto send_comp;
+
+ case IB_WR_LOCAL_INV:
+ if (!(wqe->wr.send_flags & RVT_SEND_COMPLETION_ONLY)) {
+ if (rvt_invalidate_rkey(sqp,
+ wqe->wr.ex.invalidate_rkey))
+ send_status = IB_WC_LOC_PROT_ERR;
+ local_ops = 1;
+ }
+ goto send_comp;
+
+ case IB_WR_SEND_WITH_INV:
+ if (!rvt_invalidate_rkey(qp, wqe->wr.ex.invalidate_rkey)) {
+ wc.wc_flags = IB_WC_WITH_INVALIDATE;
+ wc.ex.invalidate_rkey = wqe->wr.ex.invalidate_rkey;
+ }
+ goto send;
+
case IB_WR_SEND_WITH_IMM:
wc.wc_flags = IB_WC_WITH_IMM;
wc.ex.imm_data = wqe->wr.ex.imm_data;
/* FALLTHROUGH */
case IB_WR_SEND:
+send:
ret = hfi1_rvt_get_rwqe(qp, 0);
if (ret < 0)
goto op_err;
@@ -583,6 +604,10 @@ send_comp:
flush_send:
sqp->s_rnr_retry = sqp->s_rnr_retry_cnt;
hfi1_send_complete(sqp, wqe, send_status);
+ if (local_ops) {
+ atomic_dec(&sqp->local_ops_pending);
+ local_ops = 0;
+ }
goto again;
rnr_nak:
@@ -683,10 +708,10 @@ u32 hfi1_make_grh(struct hfi1_ibport *ibp, struct ib_grh *hdr,
return sizeof(struct ib_grh) / sizeof(u32);
}
-#define BTH2_OFFSET (offsetof(struct hfi1_pio_header, hdr.u.oth.bth[2]) / 4)
+#define BTH2_OFFSET (offsetof(struct hfi1_sdma_header, hdr.u.oth.bth[2]) / 4)
/**
- * build_ahg - create ahg in s_hdr
+ * build_ahg - create ahg in s_ahg
* @qp: a pointer to QP
* @npsn: the next PSN for the request/response
*
@@ -708,19 +733,18 @@ static inline void build_ahg(struct rvt_qp *qp, u32 npsn)
qp->s_ahgidx = sdma_ahg_alloc(priv->s_sde);
if (qp->s_ahgidx >= 0) {
qp->s_ahgpsn = npsn;
- priv->s_hdr->tx_flags |= SDMA_TXREQ_F_AHG_COPY;
+ priv->s_ahg->tx_flags |= SDMA_TXREQ_F_AHG_COPY;
/* save to protect a change in another thread */
- priv->s_hdr->sde = priv->s_sde;
- priv->s_hdr->ahgidx = qp->s_ahgidx;
+ priv->s_ahg->ahgidx = qp->s_ahgidx;
qp->s_flags |= RVT_S_AHG_VALID;
}
} else {
/* subsequent middle after valid */
if (qp->s_ahgidx >= 0) {
- priv->s_hdr->tx_flags |= SDMA_TXREQ_F_USE_AHG;
- priv->s_hdr->ahgidx = qp->s_ahgidx;
- priv->s_hdr->ahgcount++;
- priv->s_hdr->ahgdesc[0] =
+ priv->s_ahg->tx_flags |= SDMA_TXREQ_F_USE_AHG;
+ priv->s_ahg->ahgidx = qp->s_ahgidx;
+ priv->s_ahg->ahgcount++;
+ priv->s_ahg->ahgdesc[0] =
sdma_build_ahg_descriptor(
(__force u16)cpu_to_be16((u16)npsn),
BTH2_OFFSET,
@@ -728,8 +752,8 @@ static inline void build_ahg(struct rvt_qp *qp, u32 npsn)
16);
if ((npsn & 0xffff0000) !=
(qp->s_ahgpsn & 0xffff0000)) {
- priv->s_hdr->ahgcount++;
- priv->s_hdr->ahgdesc[1] =
+ priv->s_ahg->ahgcount++;
+ priv->s_ahg->ahgdesc[1] =
sdma_build_ahg_descriptor(
(__force u16)cpu_to_be16(
(u16)(npsn >> 16)),
@@ -766,7 +790,7 @@ void hfi1_make_ruc_header(struct rvt_qp *qp, struct hfi1_other_headers *ohdr,
}
lrh0 |= (priv->s_sc & 0xf) << 12 | (qp->remote_ah_attr.sl & 0xf) << 4;
/*
- * reset s_hdr/AHG fields
+ * reset s_ahg/AHG fields
*
* This insures that the ahgentry/ahgcount
* are at a non-AHG default to protect
@@ -776,10 +800,9 @@ void hfi1_make_ruc_header(struct rvt_qp *qp, struct hfi1_other_headers *ohdr,
* build_ahg() will modify as appropriate
* to use the AHG feature.
*/
- priv->s_hdr->tx_flags = 0;
- priv->s_hdr->ahgcount = 0;
- priv->s_hdr->ahgidx = 0;
- priv->s_hdr->sde = NULL;
+ priv->s_ahg->tx_flags = 0;
+ priv->s_ahg->ahgcount = 0;
+ priv->s_ahg->ahgidx = 0;
if (qp->s_mig_state == IB_MIG_MIGRATED)
bth0 |= IB_BTH_MIG_REQ;
else
@@ -890,7 +913,7 @@ void hfi1_do_send(struct rvt_qp *qp)
*/
if (hfi1_verbs_send(qp, &ps))
return;
- /* Record that s_hdr is empty. */
+ /* Record that s_ahg is empty. */
qp->s_hdrwords = 0;
/* allow other tasks to run */
if (unlikely(time_after(jiffies, timeout))) {
diff --git a/drivers/infiniband/hw/hfi1/sysfs.c b/drivers/infiniband/hw/hfi1/sysfs.c
index 91fc2aed6aed..74c84c655f7e 100644
--- a/drivers/infiniband/hw/hfi1/sysfs.c
+++ b/drivers/infiniband/hw/hfi1/sysfs.c
@@ -49,6 +49,7 @@
#include "hfi.h"
#include "mad.h"
#include "trace.h"
+#include "affinity.h"
/*
* Start of per-port congestion control structures and support code
@@ -622,6 +623,27 @@ static ssize_t show_tempsense(struct device *device,
return ret;
}
+static ssize_t show_sdma_affinity(struct device *device,
+ struct device_attribute *attr, char *buf)
+{
+ struct hfi1_ibdev *dev =
+ container_of(device, struct hfi1_ibdev, rdi.ibdev.dev);
+ struct hfi1_devdata *dd = dd_from_dev(dev);
+
+ return hfi1_get_sdma_affinity(dd, buf);
+}
+
+static ssize_t store_sdma_affinity(struct device *device,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct hfi1_ibdev *dev =
+ container_of(device, struct hfi1_ibdev, rdi.ibdev.dev);
+ struct hfi1_devdata *dd = dd_from_dev(dev);
+
+ return hfi1_set_sdma_affinity(dd, buf, count);
+}
+
/*
* end of per-unit (or driver, in some cases, but replicated
* per unit) functions
@@ -636,6 +658,8 @@ static DEVICE_ATTR(serial, S_IRUGO, show_serial, NULL);
static DEVICE_ATTR(boardversion, S_IRUGO, show_boardversion, NULL);
static DEVICE_ATTR(tempsense, S_IRUGO, show_tempsense, NULL);
static DEVICE_ATTR(chip_reset, S_IWUSR, NULL, store_chip_reset);
+static DEVICE_ATTR(sdma_affinity, S_IWUSR | S_IRUGO, show_sdma_affinity,
+ store_sdma_affinity);
static struct device_attribute *hfi1_attributes[] = {
&dev_attr_hw_rev,
@@ -646,6 +670,7 @@ static struct device_attribute *hfi1_attributes[] = {
&dev_attr_boardversion,
&dev_attr_tempsense,
&dev_attr_chip_reset,
+ &dev_attr_sdma_affinity,
};
int hfi1_create_port_files(struct ib_device *ibdev, u8 port_num,
diff --git a/drivers/infiniband/hw/hfi1/trace.h b/drivers/infiniband/hw/hfi1/trace.h
index 28c1d0832886..92dc88f013c9 100644
--- a/drivers/infiniband/hw/hfi1/trace.h
+++ b/drivers/infiniband/hw/hfi1/trace.h
@@ -44,1329 +44,10 @@
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
-#undef TRACE_SYSTEM_VAR
-#define TRACE_SYSTEM_VAR hfi1
-
-#if !defined(__HFI1_TRACE_H) || defined(TRACE_HEADER_MULTI_READ)
-#define __HFI1_TRACE_H
-
-#include <linux/tracepoint.h>
-#include <linux/trace_seq.h>
-
-#include "hfi.h"
-#include "mad.h"
-#include "sdma.h"
-
-#define DD_DEV_ENTRY(dd) __string(dev, dev_name(&(dd)->pcidev->dev))
-#define DD_DEV_ASSIGN(dd) __assign_str(dev, dev_name(&(dd)->pcidev->dev))
-
-#define packettype_name(etype) { RHF_RCV_TYPE_##etype, #etype }
-#define show_packettype(etype) \
-__print_symbolic(etype, \
- packettype_name(EXPECTED), \
- packettype_name(EAGER), \
- packettype_name(IB), \
- packettype_name(ERROR), \
- packettype_name(BYPASS))
-
-#undef TRACE_SYSTEM
-#define TRACE_SYSTEM hfi1_rx
-
-TRACE_EVENT(hfi1_rcvhdr,
- TP_PROTO(struct hfi1_devdata *dd,
- u32 ctxt,
- u64 eflags,
- u32 etype,
- u32 hlen,
- u32 tlen,
- u32 updegr,
- u32 etail
- ),
- TP_ARGS(dd, ctxt, eflags, etype, hlen, tlen, updegr, etail),
- TP_STRUCT__entry(DD_DEV_ENTRY(dd)
- __field(u64, eflags)
- __field(u32, ctxt)
- __field(u32, etype)
- __field(u32, hlen)
- __field(u32, tlen)
- __field(u32, updegr)
- __field(u32, etail)
- ),
- TP_fast_assign(DD_DEV_ASSIGN(dd);
- __entry->eflags = eflags;
- __entry->ctxt = ctxt;
- __entry->etype = etype;
- __entry->hlen = hlen;
- __entry->tlen = tlen;
- __entry->updegr = updegr;
- __entry->etail = etail;
- ),
- TP_printk(
- "[%s] ctxt %d eflags 0x%llx etype %d,%s hlen %d tlen %d updegr %d etail %d",
- __get_str(dev),
- __entry->ctxt,
- __entry->eflags,
- __entry->etype, show_packettype(__entry->etype),
- __entry->hlen,
- __entry->tlen,
- __entry->updegr,
- __entry->etail
- )
-);
-
-TRACE_EVENT(hfi1_receive_interrupt,
- TP_PROTO(struct hfi1_devdata *dd, u32 ctxt),
- TP_ARGS(dd, ctxt),
- TP_STRUCT__entry(DD_DEV_ENTRY(dd)
- __field(u32, ctxt)
- __field(u8, slow_path)
- __field(u8, dma_rtail)
- ),
- TP_fast_assign(DD_DEV_ASSIGN(dd);
- __entry->ctxt = ctxt;
- if (dd->rcd[ctxt]->do_interrupt ==
- &handle_receive_interrupt) {
- __entry->slow_path = 1;
- __entry->dma_rtail = 0xFF;
- } else if (dd->rcd[ctxt]->do_interrupt ==
- &handle_receive_interrupt_dma_rtail){
- __entry->dma_rtail = 1;
- __entry->slow_path = 0;
- } else if (dd->rcd[ctxt]->do_interrupt ==
- &handle_receive_interrupt_nodma_rtail) {
- __entry->dma_rtail = 0;
- __entry->slow_path = 0;
- }
- ),
- TP_printk("[%s] ctxt %d SlowPath: %d DmaRtail: %d",
- __get_str(dev),
- __entry->ctxt,
- __entry->slow_path,
- __entry->dma_rtail
- )
-);
-
-TRACE_EVENT(hfi1_exp_tid_reg,
- TP_PROTO(unsigned ctxt, u16 subctxt, u32 rarr,
- u32 npages, unsigned long va, unsigned long pa,
- dma_addr_t dma),
- TP_ARGS(ctxt, subctxt, rarr, npages, va, pa, dma),
- TP_STRUCT__entry(
- __field(unsigned, ctxt)
- __field(u16, subctxt)
- __field(u32, rarr)
- __field(u32, npages)
- __field(unsigned long, va)
- __field(unsigned long, pa)
- __field(dma_addr_t, dma)
- ),
- TP_fast_assign(
- __entry->ctxt = ctxt;
- __entry->subctxt = subctxt;
- __entry->rarr = rarr;
- __entry->npages = npages;
- __entry->va = va;
- __entry->pa = pa;
- __entry->dma = dma;
- ),
- TP_printk("[%u:%u] entry:%u, %u pages @ 0x%lx, va:0x%lx dma:0x%llx",
- __entry->ctxt,
- __entry->subctxt,
- __entry->rarr,
- __entry->npages,
- __entry->pa,
- __entry->va,
- __entry->dma
- )
- );
-
-TRACE_EVENT(hfi1_exp_tid_unreg,
- TP_PROTO(unsigned ctxt, u16 subctxt, u32 rarr, u32 npages,
- unsigned long va, unsigned long pa, dma_addr_t dma),
- TP_ARGS(ctxt, subctxt, rarr, npages, va, pa, dma),
- TP_STRUCT__entry(
- __field(unsigned, ctxt)
- __field(u16, subctxt)
- __field(u32, rarr)
- __field(u32, npages)
- __field(unsigned long, va)
- __field(unsigned long, pa)
- __field(dma_addr_t, dma)
- ),
- TP_fast_assign(
- __entry->ctxt = ctxt;
- __entry->subctxt = subctxt;
- __entry->rarr = rarr;
- __entry->npages = npages;
- __entry->va = va;
- __entry->pa = pa;
- __entry->dma = dma;
- ),
- TP_printk("[%u:%u] entry:%u, %u pages @ 0x%lx, va:0x%lx dma:0x%llx",
- __entry->ctxt,
- __entry->subctxt,
- __entry->rarr,
- __entry->npages,
- __entry->pa,
- __entry->va,
- __entry->dma
- )
- );
-
-TRACE_EVENT(hfi1_exp_tid_inval,
- TP_PROTO(unsigned ctxt, u16 subctxt, unsigned long va, u32 rarr,
- u32 npages, dma_addr_t dma),
- TP_ARGS(ctxt, subctxt, va, rarr, npages, dma),
- TP_STRUCT__entry(
- __field(unsigned, ctxt)
- __field(u16, subctxt)
- __field(unsigned long, va)
- __field(u32, rarr)
- __field(u32, npages)
- __field(dma_addr_t, dma)
- ),
- TP_fast_assign(
- __entry->ctxt = ctxt;
- __entry->subctxt = subctxt;
- __entry->va = va;
- __entry->rarr = rarr;
- __entry->npages = npages;
- __entry->dma = dma;
- ),
- TP_printk("[%u:%u] entry:%u, %u pages @ 0x%lx dma: 0x%llx",
- __entry->ctxt,
- __entry->subctxt,
- __entry->rarr,
- __entry->npages,
- __entry->va,
- __entry->dma
- )
- );
-
-TRACE_EVENT(hfi1_mmu_invalidate,
- TP_PROTO(unsigned ctxt, u16 subctxt, const char *type,
- unsigned long start, unsigned long end),
- TP_ARGS(ctxt, subctxt, type, start, end),
- TP_STRUCT__entry(
- __field(unsigned, ctxt)
- __field(u16, subctxt)
- __string(type, type)
- __field(unsigned long, start)
- __field(unsigned long, end)
- ),
- TP_fast_assign(
- __entry->ctxt = ctxt;
- __entry->subctxt = subctxt;
- __assign_str(type, type);
- __entry->start = start;
- __entry->end = end;
- ),
- TP_printk("[%3u:%02u] MMU Invalidate (%s) 0x%lx - 0x%lx",
- __entry->ctxt,
- __entry->subctxt,
- __get_str(type),
- __entry->start,
- __entry->end
- )
- );
-
-#undef TRACE_SYSTEM
-#define TRACE_SYSTEM hfi1_tx
-
-TRACE_EVENT(hfi1_piofree,
- TP_PROTO(struct send_context *sc, int extra),
- TP_ARGS(sc, extra),
- TP_STRUCT__entry(DD_DEV_ENTRY(sc->dd)
- __field(u32, sw_index)
- __field(u32, hw_context)
- __field(int, extra)
- ),
- TP_fast_assign(DD_DEV_ASSIGN(sc->dd);
- __entry->sw_index = sc->sw_index;
- __entry->hw_context = sc->hw_context;
- __entry->extra = extra;
- ),
- TP_printk("[%s] ctxt %u(%u) extra %d",
- __get_str(dev),
- __entry->sw_index,
- __entry->hw_context,
- __entry->extra
- )
-);
-
-TRACE_EVENT(hfi1_wantpiointr,
- TP_PROTO(struct send_context *sc, u32 needint, u64 credit_ctrl),
- TP_ARGS(sc, needint, credit_ctrl),
- TP_STRUCT__entry(DD_DEV_ENTRY(sc->dd)
- __field(u32, sw_index)
- __field(u32, hw_context)
- __field(u32, needint)
- __field(u64, credit_ctrl)
- ),
- TP_fast_assign(DD_DEV_ASSIGN(sc->dd);
- __entry->sw_index = sc->sw_index;
- __entry->hw_context = sc->hw_context;
- __entry->needint = needint;
- __entry->credit_ctrl = credit_ctrl;
- ),
- TP_printk("[%s] ctxt %u(%u) on %d credit_ctrl 0x%llx",
- __get_str(dev),
- __entry->sw_index,
- __entry->hw_context,
- __entry->needint,
- (unsigned long long)__entry->credit_ctrl
- )
-);
-
-DECLARE_EVENT_CLASS(hfi1_qpsleepwakeup_template,
- TP_PROTO(struct rvt_qp *qp, u32 flags),
- TP_ARGS(qp, flags),
- TP_STRUCT__entry(
- DD_DEV_ENTRY(dd_from_ibdev(qp->ibqp.device))
- __field(u32, qpn)
- __field(u32, flags)
- __field(u32, s_flags)
- ),
- TP_fast_assign(
- DD_DEV_ASSIGN(dd_from_ibdev(qp->ibqp.device))
- __entry->flags = flags;
- __entry->qpn = qp->ibqp.qp_num;
- __entry->s_flags = qp->s_flags;
- ),
- TP_printk(
- "[%s] qpn 0x%x flags 0x%x s_flags 0x%x",
- __get_str(dev),
- __entry->qpn,
- __entry->flags,
- __entry->s_flags
- )
-);
-
-DEFINE_EVENT(hfi1_qpsleepwakeup_template, hfi1_qpwakeup,
- TP_PROTO(struct rvt_qp *qp, u32 flags),
- TP_ARGS(qp, flags));
-
-DEFINE_EVENT(hfi1_qpsleepwakeup_template, hfi1_qpsleep,
- TP_PROTO(struct rvt_qp *qp, u32 flags),
- TP_ARGS(qp, flags));
-
-#undef TRACE_SYSTEM
-#define TRACE_SYSTEM hfi1_ibhdrs
-
-u8 ibhdr_exhdr_len(struct hfi1_ib_header *hdr);
-const char *parse_everbs_hdrs(struct trace_seq *p, u8 opcode, void *ehdrs);
-
-#define __parse_ib_ehdrs(op, ehdrs) parse_everbs_hdrs(p, op, ehdrs)
-
-const char *parse_sdma_flags(struct trace_seq *p, u64 desc0, u64 desc1);
-
-#define __parse_sdma_flags(desc0, desc1) parse_sdma_flags(p, desc0, desc1)
-
-#define lrh_name(lrh) { HFI1_##lrh, #lrh }
-#define show_lnh(lrh) \
-__print_symbolic(lrh, \
- lrh_name(LRH_BTH), \
- lrh_name(LRH_GRH))
-
-#define ib_opcode_name(opcode) { IB_OPCODE_##opcode, #opcode }
-#define show_ib_opcode(opcode) \
-__print_symbolic(opcode, \
- ib_opcode_name(RC_SEND_FIRST), \
- ib_opcode_name(RC_SEND_MIDDLE), \
- ib_opcode_name(RC_SEND_LAST), \
- ib_opcode_name(RC_SEND_LAST_WITH_IMMEDIATE), \
- ib_opcode_name(RC_SEND_ONLY), \
- ib_opcode_name(RC_SEND_ONLY_WITH_IMMEDIATE), \
- ib_opcode_name(RC_RDMA_WRITE_FIRST), \
- ib_opcode_name(RC_RDMA_WRITE_MIDDLE), \
- ib_opcode_name(RC_RDMA_WRITE_LAST), \
- ib_opcode_name(RC_RDMA_WRITE_LAST_WITH_IMMEDIATE), \
- ib_opcode_name(RC_RDMA_WRITE_ONLY), \
- ib_opcode_name(RC_RDMA_WRITE_ONLY_WITH_IMMEDIATE), \
- ib_opcode_name(RC_RDMA_READ_REQUEST), \
- ib_opcode_name(RC_RDMA_READ_RESPONSE_FIRST), \
- ib_opcode_name(RC_RDMA_READ_RESPONSE_MIDDLE), \
- ib_opcode_name(RC_RDMA_READ_RESPONSE_LAST), \
- ib_opcode_name(RC_RDMA_READ_RESPONSE_ONLY), \
- ib_opcode_name(RC_ACKNOWLEDGE), \
- ib_opcode_name(RC_ATOMIC_ACKNOWLEDGE), \
- ib_opcode_name(RC_COMPARE_SWAP), \
- ib_opcode_name(RC_FETCH_ADD), \
- ib_opcode_name(RC_SEND_LAST_WITH_INVALIDATE), \
- ib_opcode_name(RC_SEND_ONLY_WITH_INVALIDATE), \
- ib_opcode_name(UC_SEND_FIRST), \
- ib_opcode_name(UC_SEND_MIDDLE), \
- ib_opcode_name(UC_SEND_LAST), \
- ib_opcode_name(UC_SEND_LAST_WITH_IMMEDIATE), \
- ib_opcode_name(UC_SEND_ONLY), \
- ib_opcode_name(UC_SEND_ONLY_WITH_IMMEDIATE), \
- ib_opcode_name(UC_RDMA_WRITE_FIRST), \
- ib_opcode_name(UC_RDMA_WRITE_MIDDLE), \
- ib_opcode_name(UC_RDMA_WRITE_LAST), \
- ib_opcode_name(UC_RDMA_WRITE_LAST_WITH_IMMEDIATE), \
- ib_opcode_name(UC_RDMA_WRITE_ONLY), \
- ib_opcode_name(UC_RDMA_WRITE_ONLY_WITH_IMMEDIATE), \
- ib_opcode_name(UD_SEND_ONLY), \
- ib_opcode_name(UD_SEND_ONLY_WITH_IMMEDIATE), \
- ib_opcode_name(CNP))
-
-#define LRH_PRN "vl %d lver %d sl %d lnh %d,%s dlid %.4x len %d slid %.4x"
-#define BTH_PRN \
- "op 0x%.2x,%s se %d m %d pad %d tver %d pkey 0x%.4x " \
- "f %d b %d qpn 0x%.6x a %d psn 0x%.8x"
-#define EHDR_PRN "%s"
-
-DECLARE_EVENT_CLASS(hfi1_ibhdr_template,
- TP_PROTO(struct hfi1_devdata *dd,
- struct hfi1_ib_header *hdr),
- TP_ARGS(dd, hdr),
- TP_STRUCT__entry(
- DD_DEV_ENTRY(dd)
- /* LRH */
- __field(u8, vl)
- __field(u8, lver)
- __field(u8, sl)
- __field(u8, lnh)
- __field(u16, dlid)
- __field(u16, len)
- __field(u16, slid)
- /* BTH */
- __field(u8, opcode)
- __field(u8, se)
- __field(u8, m)
- __field(u8, pad)
- __field(u8, tver)
- __field(u16, pkey)
- __field(u8, f)
- __field(u8, b)
- __field(u32, qpn)
- __field(u8, a)
- __field(u32, psn)
- /* extended headers */
- __dynamic_array(u8, ehdrs, ibhdr_exhdr_len(hdr))
- ),
- TP_fast_assign(
- struct hfi1_other_headers *ohdr;
-
- DD_DEV_ASSIGN(dd);
- /* LRH */
- __entry->vl =
- (u8)(be16_to_cpu(hdr->lrh[0]) >> 12);
- __entry->lver =
- (u8)(be16_to_cpu(hdr->lrh[0]) >> 8) & 0xf;
- __entry->sl =
- (u8)(be16_to_cpu(hdr->lrh[0]) >> 4) & 0xf;
- __entry->lnh =
- (u8)(be16_to_cpu(hdr->lrh[0]) & 3);
- __entry->dlid =
- be16_to_cpu(hdr->lrh[1]);
- /* allow for larger len */
- __entry->len =
- be16_to_cpu(hdr->lrh[2]);
- __entry->slid =
- be16_to_cpu(hdr->lrh[3]);
- /* BTH */
- if (__entry->lnh == HFI1_LRH_BTH)
- ohdr = &hdr->u.oth;
- else
- ohdr = &hdr->u.l.oth;
- __entry->opcode =
- (be32_to_cpu(ohdr->bth[0]) >> 24) & 0xff;
- __entry->se =
- (be32_to_cpu(ohdr->bth[0]) >> 23) & 1;
- __entry->m =
- (be32_to_cpu(ohdr->bth[0]) >> 22) & 1;
- __entry->pad =
- (be32_to_cpu(ohdr->bth[0]) >> 20) & 3;
- __entry->tver =
- (be32_to_cpu(ohdr->bth[0]) >> 16) & 0xf;
- __entry->pkey =
- be32_to_cpu(ohdr->bth[0]) & 0xffff;
- __entry->f =
- (be32_to_cpu(ohdr->bth[1]) >> HFI1_FECN_SHIFT) &
- HFI1_FECN_MASK;
- __entry->b =
- (be32_to_cpu(ohdr->bth[1]) >> HFI1_BECN_SHIFT) &
- HFI1_BECN_MASK;
- __entry->qpn =
- be32_to_cpu(ohdr->bth[1]) & RVT_QPN_MASK;
- __entry->a =
- (be32_to_cpu(ohdr->bth[2]) >> 31) & 1;
- /* allow for larger PSN */
- __entry->psn =
- be32_to_cpu(ohdr->bth[2]) & 0x7fffffff;
- /* extended headers */
- memcpy(__get_dynamic_array(ehdrs), &ohdr->u,
- ibhdr_exhdr_len(hdr));
- ),
- TP_printk("[%s] " LRH_PRN " " BTH_PRN " " EHDR_PRN,
- __get_str(dev),
- /* LRH */
- __entry->vl,
- __entry->lver,
- __entry->sl,
- __entry->lnh, show_lnh(__entry->lnh),
- __entry->dlid,
- __entry->len,
- __entry->slid,
- /* BTH */
- __entry->opcode, show_ib_opcode(__entry->opcode),
- __entry->se,
- __entry->m,
- __entry->pad,
- __entry->tver,
- __entry->pkey,
- __entry->f,
- __entry->b,
- __entry->qpn,
- __entry->a,
- __entry->psn,
- /* extended headers */
- __parse_ib_ehdrs(
- __entry->opcode,
- (void *)__get_dynamic_array(ehdrs))
- )
-);
-
-DEFINE_EVENT(hfi1_ibhdr_template, input_ibhdr,
- TP_PROTO(struct hfi1_devdata *dd, struct hfi1_ib_header *hdr),
- TP_ARGS(dd, hdr));
-
-DEFINE_EVENT(hfi1_ibhdr_template, pio_output_ibhdr,
- TP_PROTO(struct hfi1_devdata *dd, struct hfi1_ib_header *hdr),
- TP_ARGS(dd, hdr));
-
-DEFINE_EVENT(hfi1_ibhdr_template, ack_output_ibhdr,
- TP_PROTO(struct hfi1_devdata *dd, struct hfi1_ib_header *hdr),
- TP_ARGS(dd, hdr));
-
-DEFINE_EVENT(hfi1_ibhdr_template, sdma_output_ibhdr,
- TP_PROTO(struct hfi1_devdata *dd, struct hfi1_ib_header *hdr),
- TP_ARGS(dd, hdr));
-
-#define SNOOP_PRN \
- "slid %.4x dlid %.4x qpn 0x%.6x opcode 0x%.2x,%s " \
- "svc lvl %d pkey 0x%.4x [header = %d bytes] [data = %d bytes]"
-
-#undef TRACE_SYSTEM
-#define TRACE_SYSTEM hfi1_snoop
-
-TRACE_EVENT(snoop_capture,
- TP_PROTO(struct hfi1_devdata *dd,
- int hdr_len,
- struct hfi1_ib_header *hdr,
- int data_len,
- void *data),
- TP_ARGS(dd, hdr_len, hdr, data_len, data),
- TP_STRUCT__entry(
- DD_DEV_ENTRY(dd)
- __field(u16, slid)
- __field(u16, dlid)
- __field(u32, qpn)
- __field(u8, opcode)
- __field(u8, sl)
- __field(u16, pkey)
- __field(u32, hdr_len)
- __field(u32, data_len)
- __field(u8, lnh)
- __dynamic_array(u8, raw_hdr, hdr_len)
- __dynamic_array(u8, raw_pkt, data_len)
- ),
- TP_fast_assign(
- struct hfi1_other_headers *ohdr;
-
- __entry->lnh = (u8)(be16_to_cpu(hdr->lrh[0]) & 3);
- if (__entry->lnh == HFI1_LRH_BTH)
- ohdr = &hdr->u.oth;
- else
- ohdr = &hdr->u.l.oth;
- DD_DEV_ASSIGN(dd);
- __entry->slid = be16_to_cpu(hdr->lrh[3]);
- __entry->dlid = be16_to_cpu(hdr->lrh[1]);
- __entry->qpn = be32_to_cpu(ohdr->bth[1]) & RVT_QPN_MASK;
- __entry->opcode = (be32_to_cpu(ohdr->bth[0]) >> 24) & 0xff;
- __entry->sl = (u8)(be16_to_cpu(hdr->lrh[0]) >> 4) & 0xf;
- __entry->pkey = be32_to_cpu(ohdr->bth[0]) & 0xffff;
- __entry->hdr_len = hdr_len;
- __entry->data_len = data_len;
- memcpy(__get_dynamic_array(raw_hdr), hdr, hdr_len);
- memcpy(__get_dynamic_array(raw_pkt), data, data_len);
- ),
- TP_printk(
- "[%s] " SNOOP_PRN,
- __get_str(dev),
- __entry->slid,
- __entry->dlid,
- __entry->qpn,
- __entry->opcode,
- show_ib_opcode(__entry->opcode),
- __entry->sl,
- __entry->pkey,
- __entry->hdr_len,
- __entry->data_len
- )
-);
-
-#undef TRACE_SYSTEM
-#define TRACE_SYSTEM hfi1_ctxts
-
-#define UCTXT_FMT \
- "cred:%u, credaddr:0x%llx, piobase:0x%llx, rcvhdr_cnt:%u, " \
- "rcvbase:0x%llx, rcvegrc:%u, rcvegrb:0x%llx"
-TRACE_EVENT(hfi1_uctxtdata,
- TP_PROTO(struct hfi1_devdata *dd, struct hfi1_ctxtdata *uctxt),
- TP_ARGS(dd, uctxt),
- TP_STRUCT__entry(DD_DEV_ENTRY(dd)
- __field(unsigned, ctxt)
- __field(u32, credits)
- __field(u64, hw_free)
- __field(u64, piobase)
- __field(u16, rcvhdrq_cnt)
- __field(u64, rcvhdrq_phys)
- __field(u32, eager_cnt)
- __field(u64, rcvegr_phys)
- ),
- TP_fast_assign(DD_DEV_ASSIGN(dd);
- __entry->ctxt = uctxt->ctxt;
- __entry->credits = uctxt->sc->credits;
- __entry->hw_free = (u64)uctxt->sc->hw_free;
- __entry->piobase = (u64)uctxt->sc->base_addr;
- __entry->rcvhdrq_cnt = uctxt->rcvhdrq_cnt;
- __entry->rcvhdrq_phys = uctxt->rcvhdrq_phys;
- __entry->eager_cnt = uctxt->egrbufs.alloced;
- __entry->rcvegr_phys =
- uctxt->egrbufs.rcvtids[0].phys;
- ),
- TP_printk("[%s] ctxt %u " UCTXT_FMT,
- __get_str(dev),
- __entry->ctxt,
- __entry->credits,
- __entry->hw_free,
- __entry->piobase,
- __entry->rcvhdrq_cnt,
- __entry->rcvhdrq_phys,
- __entry->eager_cnt,
- __entry->rcvegr_phys
- )
-);
-
-#define CINFO_FMT \
- "egrtids:%u, egr_size:%u, hdrq_cnt:%u, hdrq_size:%u, sdma_ring_size:%u"
-TRACE_EVENT(hfi1_ctxt_info,
- TP_PROTO(struct hfi1_devdata *dd, unsigned ctxt, unsigned subctxt,
- struct hfi1_ctxt_info cinfo),
- TP_ARGS(dd, ctxt, subctxt, cinfo),
- TP_STRUCT__entry(DD_DEV_ENTRY(dd)
- __field(unsigned, ctxt)
- __field(unsigned, subctxt)
- __field(u16, egrtids)
- __field(u16, rcvhdrq_cnt)
- __field(u16, rcvhdrq_size)
- __field(u16, sdma_ring_size)
- __field(u32, rcvegr_size)
- ),
- TP_fast_assign(DD_DEV_ASSIGN(dd);
- __entry->ctxt = ctxt;
- __entry->subctxt = subctxt;
- __entry->egrtids = cinfo.egrtids;
- __entry->rcvhdrq_cnt = cinfo.rcvhdrq_cnt;
- __entry->rcvhdrq_size = cinfo.rcvhdrq_entsize;
- __entry->sdma_ring_size = cinfo.sdma_ring_size;
- __entry->rcvegr_size = cinfo.rcvegr_size;
- ),
- TP_printk("[%s] ctxt %u:%u " CINFO_FMT,
- __get_str(dev),
- __entry->ctxt,
- __entry->subctxt,
- __entry->egrtids,
- __entry->rcvegr_size,
- __entry->rcvhdrq_cnt,
- __entry->rcvhdrq_size,
- __entry->sdma_ring_size
- )
-);
-
-#undef TRACE_SYSTEM
-#define TRACE_SYSTEM hfi1_sma
-
-#define BCT_FORMAT \
- "shared_limit %x vls 0-7 [%x,%x][%x,%x][%x,%x][%x,%x][%x,%x][%x,%x][%x,%x][%x,%x] 15 [%x,%x]"
-
-#define BCT(field) \
- be16_to_cpu( \
- ((struct buffer_control *)__get_dynamic_array(bct))->field \
- )
-
-DECLARE_EVENT_CLASS(hfi1_bct_template,
- TP_PROTO(struct hfi1_devdata *dd,
- struct buffer_control *bc),
- TP_ARGS(dd, bc),
- TP_STRUCT__entry(DD_DEV_ENTRY(dd)
- __dynamic_array(u8, bct, sizeof(*bc))
- ),
- TP_fast_assign(DD_DEV_ASSIGN(dd);
- memcpy(__get_dynamic_array(bct), bc,
- sizeof(*bc));
- ),
- TP_printk(BCT_FORMAT,
- BCT(overall_shared_limit),
-
- BCT(vl[0].dedicated),
- BCT(vl[0].shared),
-
- BCT(vl[1].dedicated),
- BCT(vl[1].shared),
-
- BCT(vl[2].dedicated),
- BCT(vl[2].shared),
-
- BCT(vl[3].dedicated),
- BCT(vl[3].shared),
-
- BCT(vl[4].dedicated),
- BCT(vl[4].shared),
-
- BCT(vl[5].dedicated),
- BCT(vl[5].shared),
-
- BCT(vl[6].dedicated),
- BCT(vl[6].shared),
-
- BCT(vl[7].dedicated),
- BCT(vl[7].shared),
-
- BCT(vl[15].dedicated),
- BCT(vl[15].shared)
- )
-);
-
-DEFINE_EVENT(hfi1_bct_template, bct_set,
- TP_PROTO(struct hfi1_devdata *dd, struct buffer_control *bc),
- TP_ARGS(dd, bc));
-
-DEFINE_EVENT(hfi1_bct_template, bct_get,
- TP_PROTO(struct hfi1_devdata *dd, struct buffer_control *bc),
- TP_ARGS(dd, bc));
-
-#undef TRACE_SYSTEM
-#define TRACE_SYSTEM hfi1_sdma
-
-TRACE_EVENT(hfi1_sdma_descriptor,
- TP_PROTO(struct sdma_engine *sde,
- u64 desc0,
- u64 desc1,
- u16 e,
- void *descp),
- TP_ARGS(sde, desc0, desc1, e, descp),
- TP_STRUCT__entry(DD_DEV_ENTRY(sde->dd)
- __field(void *, descp)
- __field(u64, desc0)
- __field(u64, desc1)
- __field(u16, e)
- __field(u8, idx)
- ),
- TP_fast_assign(DD_DEV_ASSIGN(sde->dd);
- __entry->desc0 = desc0;
- __entry->desc1 = desc1;
- __entry->idx = sde->this_idx;
- __entry->descp = descp;
- __entry->e = e;
- ),
- TP_printk(
- "[%s] SDE(%u) flags:%s addr:0x%016llx gen:%u len:%u d0:%016llx d1:%016llx to %p,%u",
- __get_str(dev),
- __entry->idx,
- __parse_sdma_flags(__entry->desc0, __entry->desc1),
- (__entry->desc0 >> SDMA_DESC0_PHY_ADDR_SHIFT) &
- SDMA_DESC0_PHY_ADDR_MASK,
- (u8)((__entry->desc1 >> SDMA_DESC1_GENERATION_SHIFT) &
- SDMA_DESC1_GENERATION_MASK),
- (u16)((__entry->desc0 >> SDMA_DESC0_BYTE_COUNT_SHIFT) &
- SDMA_DESC0_BYTE_COUNT_MASK),
- __entry->desc0,
- __entry->desc1,
- __entry->descp,
- __entry->e
- )
-);
-
-TRACE_EVENT(hfi1_sdma_engine_select,
- TP_PROTO(struct hfi1_devdata *dd, u32 sel, u8 vl, u8 idx),
- TP_ARGS(dd, sel, vl, idx),
- TP_STRUCT__entry(DD_DEV_ENTRY(dd)
- __field(u32, sel)
- __field(u8, vl)
- __field(u8, idx)
- ),
- TP_fast_assign(DD_DEV_ASSIGN(dd);
- __entry->sel = sel;
- __entry->vl = vl;
- __entry->idx = idx;
- ),
- TP_printk("[%s] selecting SDE %u sel 0x%x vl %u",
- __get_str(dev),
- __entry->idx,
- __entry->sel,
- __entry->vl
- )
-);
-
-DECLARE_EVENT_CLASS(hfi1_sdma_engine_class,
- TP_PROTO(struct sdma_engine *sde, u64 status),
- TP_ARGS(sde, status),
- TP_STRUCT__entry(DD_DEV_ENTRY(sde->dd)
- __field(u64, status)
- __field(u8, idx)
- ),
- TP_fast_assign(DD_DEV_ASSIGN(sde->dd);
- __entry->status = status;
- __entry->idx = sde->this_idx;
- ),
- TP_printk("[%s] SDE(%u) status %llx",
- __get_str(dev),
- __entry->idx,
- (unsigned long long)__entry->status
- )
-);
-
-DEFINE_EVENT(hfi1_sdma_engine_class, hfi1_sdma_engine_interrupt,
- TP_PROTO(struct sdma_engine *sde, u64 status),
- TP_ARGS(sde, status)
-);
-
-DEFINE_EVENT(hfi1_sdma_engine_class, hfi1_sdma_engine_progress,
- TP_PROTO(struct sdma_engine *sde, u64 status),
- TP_ARGS(sde, status)
-);
-
-DECLARE_EVENT_CLASS(hfi1_sdma_ahg_ad,
- TP_PROTO(struct sdma_engine *sde, int aidx),
- TP_ARGS(sde, aidx),
- TP_STRUCT__entry(DD_DEV_ENTRY(sde->dd)
- __field(int, aidx)
- __field(u8, idx)
- ),
- TP_fast_assign(DD_DEV_ASSIGN(sde->dd);
- __entry->idx = sde->this_idx;
- __entry->aidx = aidx;
- ),
- TP_printk("[%s] SDE(%u) aidx %d",
- __get_str(dev),
- __entry->idx,
- __entry->aidx
- )
-);
-
-DEFINE_EVENT(hfi1_sdma_ahg_ad, hfi1_ahg_allocate,
- TP_PROTO(struct sdma_engine *sde, int aidx),
- TP_ARGS(sde, aidx));
-
-DEFINE_EVENT(hfi1_sdma_ahg_ad, hfi1_ahg_deallocate,
- TP_PROTO(struct sdma_engine *sde, int aidx),
- TP_ARGS(sde, aidx));
-
-#ifdef CONFIG_HFI1_DEBUG_SDMA_ORDER
-TRACE_EVENT(hfi1_sdma_progress,
- TP_PROTO(struct sdma_engine *sde,
- u16 hwhead,
- u16 swhead,
- struct sdma_txreq *txp
- ),
- TP_ARGS(sde, hwhead, swhead, txp),
- TP_STRUCT__entry(DD_DEV_ENTRY(sde->dd)
- __field(u64, sn)
- __field(u16, hwhead)
- __field(u16, swhead)
- __field(u16, txnext)
- __field(u16, tx_tail)
- __field(u16, tx_head)
- __field(u8, idx)
- ),
- TP_fast_assign(DD_DEV_ASSIGN(sde->dd);
- __entry->hwhead = hwhead;
- __entry->swhead = swhead;
- __entry->tx_tail = sde->tx_tail;
- __entry->tx_head = sde->tx_head;
- __entry->txnext = txp ? txp->next_descq_idx : ~0;
- __entry->idx = sde->this_idx;
- __entry->sn = txp ? txp->sn : ~0;
- ),
- TP_printk(
- "[%s] SDE(%u) sn %llu hwhead %u swhead %u next_descq_idx %u tx_head %u tx_tail %u",
- __get_str(dev),
- __entry->idx,
- __entry->sn,
- __entry->hwhead,
- __entry->swhead,
- __entry->txnext,
- __entry->tx_head,
- __entry->tx_tail
- )
-);
-#else
-TRACE_EVENT(hfi1_sdma_progress,
- TP_PROTO(struct sdma_engine *sde,
- u16 hwhead, u16 swhead,
- struct sdma_txreq *txp
- ),
- TP_ARGS(sde, hwhead, swhead, txp),
- TP_STRUCT__entry(DD_DEV_ENTRY(sde->dd)
- __field(u16, hwhead)
- __field(u16, swhead)
- __field(u16, txnext)
- __field(u16, tx_tail)
- __field(u16, tx_head)
- __field(u8, idx)
- ),
- TP_fast_assign(DD_DEV_ASSIGN(sde->dd);
- __entry->hwhead = hwhead;
- __entry->swhead = swhead;
- __entry->tx_tail = sde->tx_tail;
- __entry->tx_head = sde->tx_head;
- __entry->txnext = txp ? txp->next_descq_idx : ~0;
- __entry->idx = sde->this_idx;
- ),
- TP_printk(
- "[%s] SDE(%u) hwhead %u swhead %u next_descq_idx %u tx_head %u tx_tail %u",
- __get_str(dev),
- __entry->idx,
- __entry->hwhead,
- __entry->swhead,
- __entry->txnext,
- __entry->tx_head,
- __entry->tx_tail
- )
-);
-#endif
-
-DECLARE_EVENT_CLASS(hfi1_sdma_sn,
- TP_PROTO(struct sdma_engine *sde, u64 sn),
- TP_ARGS(sde, sn),
- TP_STRUCT__entry(DD_DEV_ENTRY(sde->dd)
- __field(u64, sn)
- __field(u8, idx)
- ),
- TP_fast_assign(DD_DEV_ASSIGN(sde->dd);
- __entry->sn = sn;
- __entry->idx = sde->this_idx;
- ),
- TP_printk("[%s] SDE(%u) sn %llu",
- __get_str(dev),
- __entry->idx,
- __entry->sn
- )
-);
-
-DEFINE_EVENT(hfi1_sdma_sn, hfi1_sdma_out_sn,
- TP_PROTO(
- struct sdma_engine *sde,
- u64 sn
- ),
- TP_ARGS(sde, sn)
-);
-
-DEFINE_EVENT(hfi1_sdma_sn, hfi1_sdma_in_sn,
- TP_PROTO(struct sdma_engine *sde, u64 sn),
- TP_ARGS(sde, sn)
-);
-
-#define USDMA_HDR_FORMAT \
- "[%s:%u:%u:%u] PBC=(0x%x 0x%x) LRH=(0x%x 0x%x) BTH=(0x%x 0x%x 0x%x) KDETH=(0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x) TIDVal=0x%x"
-
-TRACE_EVENT(hfi1_sdma_user_header,
- TP_PROTO(struct hfi1_devdata *dd, u16 ctxt, u8 subctxt, u16 req,
- struct hfi1_pkt_header *hdr, u32 tidval),
- TP_ARGS(dd, ctxt, subctxt, req, hdr, tidval),
- TP_STRUCT__entry(
- DD_DEV_ENTRY(dd)
- __field(u16, ctxt)
- __field(u8, subctxt)
- __field(u16, req)
- __field(__le32, pbc0)
- __field(__le32, pbc1)
- __field(__be32, lrh0)
- __field(__be32, lrh1)
- __field(__be32, bth0)
- __field(__be32, bth1)
- __field(__be32, bth2)
- __field(__le32, kdeth0)
- __field(__le32, kdeth1)
- __field(__le32, kdeth2)
- __field(__le32, kdeth3)
- __field(__le32, kdeth4)
- __field(__le32, kdeth5)
- __field(__le32, kdeth6)
- __field(__le32, kdeth7)
- __field(__le32, kdeth8)
- __field(u32, tidval)
- ),
- TP_fast_assign(
- __le32 *pbc = (__le32 *)hdr->pbc;
- __be32 *lrh = (__be32 *)hdr->lrh;
- __be32 *bth = (__be32 *)hdr->bth;
- __le32 *kdeth = (__le32 *)&hdr->kdeth;
-
- DD_DEV_ASSIGN(dd);
- __entry->ctxt = ctxt;
- __entry->subctxt = subctxt;
- __entry->req = req;
- __entry->pbc0 = pbc[0];
- __entry->pbc1 = pbc[1];
- __entry->lrh0 = be32_to_cpu(lrh[0]);
- __entry->lrh1 = be32_to_cpu(lrh[1]);
- __entry->bth0 = be32_to_cpu(bth[0]);
- __entry->bth1 = be32_to_cpu(bth[1]);
- __entry->bth2 = be32_to_cpu(bth[2]);
- __entry->kdeth0 = kdeth[0];
- __entry->kdeth1 = kdeth[1];
- __entry->kdeth2 = kdeth[2];
- __entry->kdeth3 = kdeth[3];
- __entry->kdeth4 = kdeth[4];
- __entry->kdeth5 = kdeth[5];
- __entry->kdeth6 = kdeth[6];
- __entry->kdeth7 = kdeth[7];
- __entry->kdeth8 = kdeth[8];
- __entry->tidval = tidval;
- ),
- TP_printk(USDMA_HDR_FORMAT,
- __get_str(dev),
- __entry->ctxt,
- __entry->subctxt,
- __entry->req,
- __entry->pbc1,
- __entry->pbc0,
- __entry->lrh0,
- __entry->lrh1,
- __entry->bth0,
- __entry->bth1,
- __entry->bth2,
- __entry->kdeth0,
- __entry->kdeth1,
- __entry->kdeth2,
- __entry->kdeth3,
- __entry->kdeth4,
- __entry->kdeth5,
- __entry->kdeth6,
- __entry->kdeth7,
- __entry->kdeth8,
- __entry->tidval
- )
- );
-
-#define SDMA_UREQ_FMT \
- "[%s:%u:%u] ver/op=0x%x, iovcnt=%u, npkts=%u, frag=%u, idx=%u"
-TRACE_EVENT(hfi1_sdma_user_reqinfo,
- TP_PROTO(struct hfi1_devdata *dd, u16 ctxt, u8 subctxt, u16 *i),
- TP_ARGS(dd, ctxt, subctxt, i),
- TP_STRUCT__entry(
- DD_DEV_ENTRY(dd);
- __field(u16, ctxt)
- __field(u8, subctxt)
- __field(u8, ver_opcode)
- __field(u8, iovcnt)
- __field(u16, npkts)
- __field(u16, fragsize)
- __field(u16, comp_idx)
- ),
- TP_fast_assign(
- DD_DEV_ASSIGN(dd);
- __entry->ctxt = ctxt;
- __entry->subctxt = subctxt;
- __entry->ver_opcode = i[0] & 0xff;
- __entry->iovcnt = (i[0] >> 8) & 0xff;
- __entry->npkts = i[1];
- __entry->fragsize = i[2];
- __entry->comp_idx = i[3];
- ),
- TP_printk(SDMA_UREQ_FMT,
- __get_str(dev),
- __entry->ctxt,
- __entry->subctxt,
- __entry->ver_opcode,
- __entry->iovcnt,
- __entry->npkts,
- __entry->fragsize,
- __entry->comp_idx
- )
- );
-
-#define usdma_complete_name(st) { st, #st }
-#define show_usdma_complete_state(st) \
- __print_symbolic(st, \
- usdma_complete_name(FREE), \
- usdma_complete_name(QUEUED), \
- usdma_complete_name(COMPLETE), \
- usdma_complete_name(ERROR))
-
-TRACE_EVENT(hfi1_sdma_user_completion,
- TP_PROTO(struct hfi1_devdata *dd, u16 ctxt, u8 subctxt, u16 idx,
- u8 state, int code),
- TP_ARGS(dd, ctxt, subctxt, idx, state, code),
- TP_STRUCT__entry(
- DD_DEV_ENTRY(dd)
- __field(u16, ctxt)
- __field(u8, subctxt)
- __field(u16, idx)
- __field(u8, state)
- __field(int, code)
- ),
- TP_fast_assign(
- DD_DEV_ASSIGN(dd);
- __entry->ctxt = ctxt;
- __entry->subctxt = subctxt;
- __entry->idx = idx;
- __entry->state = state;
- __entry->code = code;
- ),
- TP_printk("[%s:%u:%u:%u] SDMA completion state %s (%d)",
- __get_str(dev), __entry->ctxt, __entry->subctxt,
- __entry->idx, show_usdma_complete_state(__entry->state),
- __entry->code)
- );
-
-const char *print_u32_array(struct trace_seq *, u32 *, int);
-#define __print_u32_hex(arr, len) print_u32_array(p, arr, len)
-
-TRACE_EVENT(hfi1_sdma_user_header_ahg,
- TP_PROTO(struct hfi1_devdata *dd, u16 ctxt, u8 subctxt, u16 req,
- u8 sde, u8 ahgidx, u32 *ahg, int len, u32 tidval),
- TP_ARGS(dd, ctxt, subctxt, req, sde, ahgidx, ahg, len, tidval),
- TP_STRUCT__entry(
- DD_DEV_ENTRY(dd)
- __field(u16, ctxt)
- __field(u8, subctxt)
- __field(u16, req)
- __field(u8, sde)
- __field(u8, idx)
- __field(int, len)
- __field(u32, tidval)
- __array(u32, ahg, 10)
- ),
- TP_fast_assign(
- DD_DEV_ASSIGN(dd);
- __entry->ctxt = ctxt;
- __entry->subctxt = subctxt;
- __entry->req = req;
- __entry->sde = sde;
- __entry->idx = ahgidx;
- __entry->len = len;
- __entry->tidval = tidval;
- memcpy(__entry->ahg, ahg, len * sizeof(u32));
- ),
- TP_printk("[%s:%u:%u:%u] (SDE%u/AHG%u) ahg[0-%d]=(%s) TIDVal=0x%x",
- __get_str(dev),
- __entry->ctxt,
- __entry->subctxt,
- __entry->req,
- __entry->sde,
- __entry->idx,
- __entry->len - 1,
- __print_u32_hex(__entry->ahg, __entry->len),
- __entry->tidval
- )
- );
-
-TRACE_EVENT(hfi1_sdma_state,
- TP_PROTO(struct sdma_engine *sde,
- const char *cstate,
- const char *nstate
- ),
- TP_ARGS(sde, cstate, nstate),
- TP_STRUCT__entry(DD_DEV_ENTRY(sde->dd)
- __string(curstate, cstate)
- __string(newstate, nstate)
- ),
- TP_fast_assign(DD_DEV_ASSIGN(sde->dd);
- __assign_str(curstate, cstate);
- __assign_str(newstate, nstate);
- ),
- TP_printk("[%s] current state %s new state %s",
- __get_str(dev),
- __get_str(curstate),
- __get_str(newstate)
- )
-);
-
-#undef TRACE_SYSTEM
-#define TRACE_SYSTEM hfi1_rc
-
-DECLARE_EVENT_CLASS(hfi1_rc_template,
- TP_PROTO(struct rvt_qp *qp, u32 psn),
- TP_ARGS(qp, psn),
- TP_STRUCT__entry(
- DD_DEV_ENTRY(dd_from_ibdev(qp->ibqp.device))
- __field(u32, qpn)
- __field(u32, s_flags)
- __field(u32, psn)
- __field(u32, s_psn)
- __field(u32, s_next_psn)
- __field(u32, s_sending_psn)
- __field(u32, s_sending_hpsn)
- __field(u32, r_psn)
- ),
- TP_fast_assign(
- DD_DEV_ASSIGN(dd_from_ibdev(qp->ibqp.device))
- __entry->qpn = qp->ibqp.qp_num;
- __entry->s_flags = qp->s_flags;
- __entry->psn = psn;
- __entry->s_psn = qp->s_psn;
- __entry->s_next_psn = qp->s_next_psn;
- __entry->s_sending_psn = qp->s_sending_psn;
- __entry->s_sending_hpsn = qp->s_sending_hpsn;
- __entry->r_psn = qp->r_psn;
- ),
- TP_printk(
- "[%s] qpn 0x%x s_flags 0x%x psn 0x%x s_psn 0x%x s_next_psn 0x%x s_sending_psn 0x%x sending_hpsn 0x%x r_psn 0x%x",
- __get_str(dev),
- __entry->qpn,
- __entry->s_flags,
- __entry->psn,
- __entry->s_psn,
- __entry->s_next_psn,
- __entry->s_sending_psn,
- __entry->s_sending_hpsn,
- __entry->r_psn
- )
-);
-
-DEFINE_EVENT(hfi1_rc_template, hfi1_rc_sendcomplete,
- TP_PROTO(struct rvt_qp *qp, u32 psn),
- TP_ARGS(qp, psn)
-);
-
-DEFINE_EVENT(hfi1_rc_template, hfi1_rc_ack,
- TP_PROTO(struct rvt_qp *qp, u32 psn),
- TP_ARGS(qp, psn)
-);
-
-DEFINE_EVENT(hfi1_rc_template, hfi1_rc_timeout,
- TP_PROTO(struct rvt_qp *qp, u32 psn),
- TP_ARGS(qp, psn)
-);
-
-DEFINE_EVENT(hfi1_rc_template, hfi1_rc_rcv_error,
- TP_PROTO(struct rvt_qp *qp, u32 psn),
- TP_ARGS(qp, psn)
-);
-
-#undef TRACE_SYSTEM
-#define TRACE_SYSTEM hfi1_misc
-
-TRACE_EVENT(hfi1_interrupt,
- TP_PROTO(struct hfi1_devdata *dd, const struct is_table *is_entry,
- int src),
- TP_ARGS(dd, is_entry, src),
- TP_STRUCT__entry(DD_DEV_ENTRY(dd)
- __array(char, buf, 64)
- __field(int, src)
- ),
- TP_fast_assign(DD_DEV_ASSIGN(dd)
- is_entry->is_name(__entry->buf, 64,
- src - is_entry->start);
- __entry->src = src;
- ),
- TP_printk("[%s] source: %s [%d]", __get_str(dev), __entry->buf,
- __entry->src)
-);
-
-/*
- * Note:
- * This produces a REALLY ugly trace in the console output when the string is
- * too long.
- */
-
-#undef TRACE_SYSTEM
-#define TRACE_SYSTEM hfi1_trace
-
-#define MAX_MSG_LEN 512
-
-DECLARE_EVENT_CLASS(hfi1_trace_template,
- TP_PROTO(const char *function, struct va_format *vaf),
- TP_ARGS(function, vaf),
- TP_STRUCT__entry(__string(function, function)
- __dynamic_array(char, msg, MAX_MSG_LEN)
- ),
- TP_fast_assign(__assign_str(function, function);
- WARN_ON_ONCE(vsnprintf
- (__get_dynamic_array(msg),
- MAX_MSG_LEN, vaf->fmt,
- *vaf->va) >=
- MAX_MSG_LEN);
- ),
- TP_printk("(%s) %s",
- __get_str(function),
- __get_str(msg))
-);
-
-/*
- * It may be nice to macroize the __hfi1_trace but the va_* stuff requires an
- * actual function to work and can not be in a macro.
- */
-#define __hfi1_trace_def(lvl) \
-void __hfi1_trace_##lvl(const char *funct, char *fmt, ...); \
- \
-DEFINE_EVENT(hfi1_trace_template, hfi1_ ##lvl, \
- TP_PROTO(const char *function, struct va_format *vaf), \
- TP_ARGS(function, vaf))
-
-#define __hfi1_trace_fn(lvl) \
-void __hfi1_trace_##lvl(const char *func, char *fmt, ...) \
-{ \
- struct va_format vaf = { \
- .fmt = fmt, \
- }; \
- va_list args; \
- \
- va_start(args, fmt); \
- vaf.va = &args; \
- trace_hfi1_ ##lvl(func, &vaf); \
- va_end(args); \
- return; \
-}
-
-/*
- * To create a new trace level simply define it below and as a __hfi1_trace_fn
- * in trace.c. This will create all the hooks for calling
- * hfi1_cdbg(LVL, fmt, ...); as well as take care of all
- * the debugfs stuff.
- */
-__hfi1_trace_def(PKT);
-__hfi1_trace_def(PROC);
-__hfi1_trace_def(SDMA);
-__hfi1_trace_def(LINKVERB);
-__hfi1_trace_def(DEBUG);
-__hfi1_trace_def(SNOOP);
-__hfi1_trace_def(CNTR);
-__hfi1_trace_def(PIO);
-__hfi1_trace_def(DC8051);
-__hfi1_trace_def(FIRMWARE);
-__hfi1_trace_def(RCVCTRL);
-__hfi1_trace_def(TID);
-__hfi1_trace_def(MMU);
-__hfi1_trace_def(IOCTL);
-
-#define hfi1_cdbg(which, fmt, ...) \
- __hfi1_trace_##which(__func__, fmt, ##__VA_ARGS__)
-
-#define hfi1_dbg(fmt, ...) \
- hfi1_cdbg(DEBUG, fmt, ##__VA_ARGS__)
-
-/*
- * Define HFI1_EARLY_DBG at compile time or here to enable early trace
- * messages. Do not check in an enablement for this.
- */
-
-#ifdef HFI1_EARLY_DBG
-#define hfi1_dbg_early(fmt, ...) \
- trace_printk(fmt, ##__VA_ARGS__)
-#else
-#define hfi1_dbg_early(fmt, ...)
-#endif
-
-#endif /* __HFI1_TRACE_H */
-
-#undef TRACE_INCLUDE_PATH
-#undef TRACE_INCLUDE_FILE
-#define TRACE_INCLUDE_PATH .
-#define TRACE_INCLUDE_FILE trace
-#include <trace/define_trace.h>
+#include "trace_dbg.h"
+#include "trace_misc.h"
+#include "trace_ctxts.h"
+#include "trace_ibhdrs.h"
+#include "trace_rc.h"
+#include "trace_rx.h"
+#include "trace_tx.h"
diff --git a/drivers/infiniband/hw/hfi1/trace_ctxts.h b/drivers/infiniband/hw/hfi1/trace_ctxts.h
new file mode 100644
index 000000000000..31654bbac1cf
--- /dev/null
+++ b/drivers/infiniband/hw/hfi1/trace_ctxts.h
@@ -0,0 +1,141 @@
+/*
+* Copyright(c) 2015, 2016 Intel Corporation.
+*
+* This file is provided under a dual BSD/GPLv2 license. When using or
+* redistributing this file, you may do so under either license.
+*
+* GPL LICENSE SUMMARY
+*
+* This program is free software; you can redistribute it and/or modify
+* it under the terms of version 2 of the GNU General Public License as
+* published by the Free Software Foundation.
+*
+* This program is distributed in the hope that it will be useful, but
+* WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+* General Public License for more details.
+*
+* BSD LICENSE
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions
+* are met:
+*
+* - Redistributions of source code must retain the above copyright
+* notice, this list of conditions and the following disclaimer.
+* - Redistributions in binary form must reproduce the above copyright
+* notice, this list of conditions and the following disclaimer in
+* the documentation and/or other materials provided with the
+* distribution.
+* - Neither the name of Intel Corporation nor the names of its
+* contributors may be used to endorse or promote products derived
+* from this software without specific prior written permission.
+*
+* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*
+*/
+#if !defined(__HFI1_TRACE_CTXTS_H) || defined(TRACE_HEADER_MULTI_READ)
+#define __HFI1_TRACE_CTXTS_H
+
+#include <linux/tracepoint.h>
+#include <linux/trace_seq.h>
+
+#include "hfi.h"
+
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM hfi1_ctxts
+
+#define UCTXT_FMT \
+ "cred:%u, credaddr:0x%llx, piobase:0x%p, rcvhdr_cnt:%u, " \
+ "rcvbase:0x%llx, rcvegrc:%u, rcvegrb:0x%llx"
+TRACE_EVENT(hfi1_uctxtdata,
+ TP_PROTO(struct hfi1_devdata *dd, struct hfi1_ctxtdata *uctxt),
+ TP_ARGS(dd, uctxt),
+ TP_STRUCT__entry(DD_DEV_ENTRY(dd)
+ __field(unsigned int, ctxt)
+ __field(u32, credits)
+ __field(u64, hw_free)
+ __field(void __iomem *, piobase)
+ __field(u16, rcvhdrq_cnt)
+ __field(u64, rcvhdrq_phys)
+ __field(u32, eager_cnt)
+ __field(u64, rcvegr_phys)
+ ),
+ TP_fast_assign(DD_DEV_ASSIGN(dd);
+ __entry->ctxt = uctxt->ctxt;
+ __entry->credits = uctxt->sc->credits;
+ __entry->hw_free = le64_to_cpu(*uctxt->sc->hw_free);
+ __entry->piobase = uctxt->sc->base_addr;
+ __entry->rcvhdrq_cnt = uctxt->rcvhdrq_cnt;
+ __entry->rcvhdrq_phys = uctxt->rcvhdrq_phys;
+ __entry->eager_cnt = uctxt->egrbufs.alloced;
+ __entry->rcvegr_phys =
+ uctxt->egrbufs.rcvtids[0].phys;
+ ),
+ TP_printk("[%s] ctxt %u " UCTXT_FMT,
+ __get_str(dev),
+ __entry->ctxt,
+ __entry->credits,
+ __entry->hw_free,
+ __entry->piobase,
+ __entry->rcvhdrq_cnt,
+ __entry->rcvhdrq_phys,
+ __entry->eager_cnt,
+ __entry->rcvegr_phys
+ )
+);
+
+#define CINFO_FMT \
+ "egrtids:%u, egr_size:%u, hdrq_cnt:%u, hdrq_size:%u, sdma_ring_size:%u"
+TRACE_EVENT(hfi1_ctxt_info,
+ TP_PROTO(struct hfi1_devdata *dd, unsigned int ctxt,
+ unsigned int subctxt,
+ struct hfi1_ctxt_info cinfo),
+ TP_ARGS(dd, ctxt, subctxt, cinfo),
+ TP_STRUCT__entry(DD_DEV_ENTRY(dd)
+ __field(unsigned int, ctxt)
+ __field(unsigned int, subctxt)
+ __field(u16, egrtids)
+ __field(u16, rcvhdrq_cnt)
+ __field(u16, rcvhdrq_size)
+ __field(u16, sdma_ring_size)
+ __field(u32, rcvegr_size)
+ ),
+ TP_fast_assign(DD_DEV_ASSIGN(dd);
+ __entry->ctxt = ctxt;
+ __entry->subctxt = subctxt;
+ __entry->egrtids = cinfo.egrtids;
+ __entry->rcvhdrq_cnt = cinfo.rcvhdrq_cnt;
+ __entry->rcvhdrq_size = cinfo.rcvhdrq_entsize;
+ __entry->sdma_ring_size = cinfo.sdma_ring_size;
+ __entry->rcvegr_size = cinfo.rcvegr_size;
+ ),
+ TP_printk("[%s] ctxt %u:%u " CINFO_FMT,
+ __get_str(dev),
+ __entry->ctxt,
+ __entry->subctxt,
+ __entry->egrtids,
+ __entry->rcvegr_size,
+ __entry->rcvhdrq_cnt,
+ __entry->rcvhdrq_size,
+ __entry->sdma_ring_size
+ )
+);
+
+#endif /* __HFI1_TRACE_CTXTS_H */
+
+#undef TRACE_INCLUDE_PATH
+#undef TRACE_INCLUDE_FILE
+#define TRACE_INCLUDE_PATH .
+#define TRACE_INCLUDE_FILE trace_ctxts
+#include <trace/define_trace.h>
diff --git a/drivers/infiniband/hw/hfi1/trace_dbg.h b/drivers/infiniband/hw/hfi1/trace_dbg.h
new file mode 100644
index 000000000000..0e7d929530c5
--- /dev/null
+++ b/drivers/infiniband/hw/hfi1/trace_dbg.h
@@ -0,0 +1,155 @@
+/*
+* Copyright(c) 2015, 2016 Intel Corporation.
+*
+* This file is provided under a dual BSD/GPLv2 license. When using or
+* redistributing this file, you may do so under either license.
+*
+* GPL LICENSE SUMMARY
+*
+* This program is free software; you can redistribute it and/or modify
+* it under the terms of version 2 of the GNU General Public License as
+* published by the Free Software Foundation.
+*
+* This program is distributed in the hope that it will be useful, but
+* WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+* General Public License for more details.
+*
+* BSD LICENSE
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions
+* are met:
+*
+* - Redistributions of source code must retain the above copyright
+* notice, this list of conditions and the following disclaimer.
+* - Redistributions in binary form must reproduce the above copyright
+* notice, this list of conditions and the following disclaimer in
+* the documentation and/or other materials provided with the
+* distribution.
+* - Neither the name of Intel Corporation nor the names of its
+* contributors may be used to endorse or promote products derived
+* from this software without specific prior written permission.
+*
+* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*
+*/
+#if !defined(__HFI1_TRACE_EXTRA_H) || defined(TRACE_HEADER_MULTI_READ)
+#define __HFI1_TRACE_EXTRA_H
+
+#include <linux/tracepoint.h>
+#include <linux/trace_seq.h>
+
+#include "hfi.h"
+
+/*
+ * Note:
+ * This produces a REALLY ugly trace in the console output when the string is
+ * too long.
+ */
+
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM hfi1_dbg
+
+#define MAX_MSG_LEN 512
+
+DECLARE_EVENT_CLASS(hfi1_trace_template,
+ TP_PROTO(const char *function, struct va_format *vaf),
+ TP_ARGS(function, vaf),
+ TP_STRUCT__entry(__string(function, function)
+ __dynamic_array(char, msg, MAX_MSG_LEN)
+ ),
+ TP_fast_assign(__assign_str(function, function);
+ WARN_ON_ONCE(vsnprintf
+ (__get_dynamic_array(msg),
+ MAX_MSG_LEN, vaf->fmt,
+ *vaf->va) >=
+ MAX_MSG_LEN);
+ ),
+ TP_printk("(%s) %s",
+ __get_str(function),
+ __get_str(msg))
+);
+
+/*
+ * It may be nice to macroize the __hfi1_trace but the va_* stuff requires an
+ * actual function to work and can not be in a macro.
+ */
+#define __hfi1_trace_def(lvl) \
+void __hfi1_trace_##lvl(const char *funct, char *fmt, ...); \
+ \
+DEFINE_EVENT(hfi1_trace_template, hfi1_ ##lvl, \
+ TP_PROTO(const char *function, struct va_format *vaf), \
+ TP_ARGS(function, vaf))
+
+#define __hfi1_trace_fn(lvl) \
+void __hfi1_trace_##lvl(const char *func, char *fmt, ...) \
+{ \
+ struct va_format vaf = { \
+ .fmt = fmt, \
+ }; \
+ va_list args; \
+ \
+ va_start(args, fmt); \
+ vaf.va = &args; \
+ trace_hfi1_ ##lvl(func, &vaf); \
+ va_end(args); \
+ return; \
+}
+
+/*
+ * To create a new trace level simply define it below and as a __hfi1_trace_fn
+ * in trace.c. This will create all the hooks for calling
+ * hfi1_cdbg(LVL, fmt, ...); as well as take care of all
+ * the debugfs stuff.
+ */
+__hfi1_trace_def(PKT);
+__hfi1_trace_def(PROC);
+__hfi1_trace_def(SDMA);
+__hfi1_trace_def(LINKVERB);
+__hfi1_trace_def(DEBUG);
+__hfi1_trace_def(SNOOP);
+__hfi1_trace_def(CNTR);
+__hfi1_trace_def(PIO);
+__hfi1_trace_def(DC8051);
+__hfi1_trace_def(FIRMWARE);
+__hfi1_trace_def(RCVCTRL);
+__hfi1_trace_def(TID);
+__hfi1_trace_def(MMU);
+__hfi1_trace_def(IOCTL);
+
+#define hfi1_cdbg(which, fmt, ...) \
+ __hfi1_trace_##which(__func__, fmt, ##__VA_ARGS__)
+
+#define hfi1_dbg(fmt, ...) \
+ hfi1_cdbg(DEBUG, fmt, ##__VA_ARGS__)
+
+/*
+ * Define HFI1_EARLY_DBG at compile time or here to enable early trace
+ * messages. Do not check in an enablement for this.
+ */
+
+#ifdef HFI1_EARLY_DBG
+#define hfi1_dbg_early(fmt, ...) \
+ trace_printk(fmt, ##__VA_ARGS__)
+#else
+#define hfi1_dbg_early(fmt, ...)
+#endif
+
+#endif /* __HFI1_TRACE_EXTRA_H */
+
+#undef TRACE_INCLUDE_PATH
+#undef TRACE_INCLUDE_FILE
+#define TRACE_INCLUDE_PATH .
+#define TRACE_INCLUDE_FILE trace_dbg
+#include <trace/define_trace.h>
diff --git a/drivers/infiniband/hw/hfi1/trace_ibhdrs.h b/drivers/infiniband/hw/hfi1/trace_ibhdrs.h
new file mode 100644
index 000000000000..c3e41aed0034
--- /dev/null
+++ b/drivers/infiniband/hw/hfi1/trace_ibhdrs.h
@@ -0,0 +1,209 @@
+/*
+ * Copyright(c) 2015, 2016 Intel Corporation.
+ *
+ * This file is provided under a dual BSD/GPLv2 license. When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * BSD LICENSE
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * - Neither the name of Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+#if !defined(__HFI1_TRACE_IBHDRS_H) || defined(TRACE_HEADER_MULTI_READ)
+#define __HFI1_TRACE_IBHDRS_H
+
+#include <linux/tracepoint.h>
+#include <linux/trace_seq.h>
+
+#include "hfi.h"
+
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM hfi1_ibhdrs
+
+u8 ibhdr_exhdr_len(struct hfi1_ib_header *hdr);
+const char *parse_everbs_hdrs(struct trace_seq *p, u8 opcode, void *ehdrs);
+
+#define __parse_ib_ehdrs(op, ehdrs) parse_everbs_hdrs(p, op, ehdrs)
+
+#define lrh_name(lrh) { HFI1_##lrh, #lrh }
+#define show_lnh(lrh) \
+__print_symbolic(lrh, \
+ lrh_name(LRH_BTH), \
+ lrh_name(LRH_GRH))
+
+#define LRH_PRN "vl %d lver %d sl %d lnh %d,%s dlid %.4x len %d slid %.4x"
+#define BTH_PRN \
+ "op 0x%.2x,%s se %d m %d pad %d tver %d pkey 0x%.4x " \
+ "f %d b %d qpn 0x%.6x a %d psn 0x%.8x"
+#define EHDR_PRN "%s"
+
+DECLARE_EVENT_CLASS(hfi1_ibhdr_template,
+ TP_PROTO(struct hfi1_devdata *dd,
+ struct hfi1_ib_header *hdr),
+ TP_ARGS(dd, hdr),
+ TP_STRUCT__entry(
+ DD_DEV_ENTRY(dd)
+ /* LRH */
+ __field(u8, vl)
+ __field(u8, lver)
+ __field(u8, sl)
+ __field(u8, lnh)
+ __field(u16, dlid)
+ __field(u16, len)
+ __field(u16, slid)
+ /* BTH */
+ __field(u8, opcode)
+ __field(u8, se)
+ __field(u8, m)
+ __field(u8, pad)
+ __field(u8, tver)
+ __field(u16, pkey)
+ __field(u8, f)
+ __field(u8, b)
+ __field(u32, qpn)
+ __field(u8, a)
+ __field(u32, psn)
+ /* extended headers */
+ __dynamic_array(u8, ehdrs, ibhdr_exhdr_len(hdr))
+ ),
+ TP_fast_assign(
+ struct hfi1_other_headers *ohdr;
+
+ DD_DEV_ASSIGN(dd);
+ /* LRH */
+ __entry->vl =
+ (u8)(be16_to_cpu(hdr->lrh[0]) >> 12);
+ __entry->lver =
+ (u8)(be16_to_cpu(hdr->lrh[0]) >> 8) & 0xf;
+ __entry->sl =
+ (u8)(be16_to_cpu(hdr->lrh[0]) >> 4) & 0xf;
+ __entry->lnh =
+ (u8)(be16_to_cpu(hdr->lrh[0]) & 3);
+ __entry->dlid =
+ be16_to_cpu(hdr->lrh[1]);
+ /* allow for larger len */
+ __entry->len =
+ be16_to_cpu(hdr->lrh[2]);
+ __entry->slid =
+ be16_to_cpu(hdr->lrh[3]);
+ /* BTH */
+ if (__entry->lnh == HFI1_LRH_BTH)
+ ohdr = &hdr->u.oth;
+ else
+ ohdr = &hdr->u.l.oth;
+ __entry->opcode =
+ (be32_to_cpu(ohdr->bth[0]) >> 24) & 0xff;
+ __entry->se =
+ (be32_to_cpu(ohdr->bth[0]) >> 23) & 1;
+ __entry->m =
+ (be32_to_cpu(ohdr->bth[0]) >> 22) & 1;
+ __entry->pad =
+ (be32_to_cpu(ohdr->bth[0]) >> 20) & 3;
+ __entry->tver =
+ (be32_to_cpu(ohdr->bth[0]) >> 16) & 0xf;
+ __entry->pkey =
+ be32_to_cpu(ohdr->bth[0]) & 0xffff;
+ __entry->f =
+ (be32_to_cpu(ohdr->bth[1]) >> HFI1_FECN_SHIFT) &
+ HFI1_FECN_MASK;
+ __entry->b =
+ (be32_to_cpu(ohdr->bth[1]) >> HFI1_BECN_SHIFT) &
+ HFI1_BECN_MASK;
+ __entry->qpn =
+ be32_to_cpu(ohdr->bth[1]) & RVT_QPN_MASK;
+ __entry->a =
+ (be32_to_cpu(ohdr->bth[2]) >> 31) & 1;
+ /* allow for larger PSN */
+ __entry->psn =
+ be32_to_cpu(ohdr->bth[2]) & 0x7fffffff;
+ /* extended headers */
+ memcpy(__get_dynamic_array(ehdrs), &ohdr->u,
+ ibhdr_exhdr_len(hdr));
+ ),
+ TP_printk("[%s] " LRH_PRN " " BTH_PRN " " EHDR_PRN,
+ __get_str(dev),
+ /* LRH */
+ __entry->vl,
+ __entry->lver,
+ __entry->sl,
+ __entry->lnh, show_lnh(__entry->lnh),
+ __entry->dlid,
+ __entry->len,
+ __entry->slid,
+ /* BTH */
+ __entry->opcode, show_ib_opcode(__entry->opcode),
+ __entry->se,
+ __entry->m,
+ __entry->pad,
+ __entry->tver,
+ __entry->pkey,
+ __entry->f,
+ __entry->b,
+ __entry->qpn,
+ __entry->a,
+ __entry->psn,
+ /* extended headers */
+ __parse_ib_ehdrs(
+ __entry->opcode,
+ (void *)__get_dynamic_array(ehdrs))
+ )
+);
+
+DEFINE_EVENT(hfi1_ibhdr_template, input_ibhdr,
+ TP_PROTO(struct hfi1_devdata *dd, struct hfi1_ib_header *hdr),
+ TP_ARGS(dd, hdr));
+
+DEFINE_EVENT(hfi1_ibhdr_template, pio_output_ibhdr,
+ TP_PROTO(struct hfi1_devdata *dd, struct hfi1_ib_header *hdr),
+ TP_ARGS(dd, hdr));
+
+DEFINE_EVENT(hfi1_ibhdr_template, ack_output_ibhdr,
+ TP_PROTO(struct hfi1_devdata *dd, struct hfi1_ib_header *hdr),
+ TP_ARGS(dd, hdr));
+
+DEFINE_EVENT(hfi1_ibhdr_template, sdma_output_ibhdr,
+ TP_PROTO(struct hfi1_devdata *dd, struct hfi1_ib_header *hdr),
+ TP_ARGS(dd, hdr));
+
+#endif /* __HFI1_TRACE_IBHDRS_H */
+
+#undef TRACE_INCLUDE_PATH
+#undef TRACE_INCLUDE_FILE
+#define TRACE_INCLUDE_PATH .
+#define TRACE_INCLUDE_FILE trace_ibhdrs
+#include <trace/define_trace.h>
diff --git a/drivers/infiniband/hw/hfi1/trace_misc.h b/drivers/infiniband/hw/hfi1/trace_misc.h
new file mode 100644
index 000000000000..d308454af7fd
--- /dev/null
+++ b/drivers/infiniband/hw/hfi1/trace_misc.h
@@ -0,0 +1,81 @@
+/*
+* Copyright(c) 2015, 2016 Intel Corporation.
+*
+* This file is provided under a dual BSD/GPLv2 license. When using or
+* redistributing this file, you may do so under either license.
+*
+* GPL LICENSE SUMMARY
+*
+* This program is free software; you can redistribute it and/or modify
+* it under the terms of version 2 of the GNU General Public License as
+* published by the Free Software Foundation.
+*
+* This program is distributed in the hope that it will be useful, but
+* WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+* General Public License for more details.
+*
+* BSD LICENSE
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions
+* are met:
+*
+* - Redistributions of source code must retain the above copyright
+* notice, this list of conditions and the following disclaimer.
+* - Redistributions in binary form must reproduce the above copyright
+* notice, this list of conditions and the following disclaimer in
+* the documentation and/or other materials provided with the
+* distribution.
+* - Neither the name of Intel Corporation nor the names of its
+* contributors may be used to endorse or promote products derived
+* from this software without specific prior written permission.
+*
+* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*
+*/
+#if !defined(__HFI1_TRACE_MISC_H) || defined(TRACE_HEADER_MULTI_READ)
+#define __HFI1_TRACE_MISC_H
+
+#include <linux/tracepoint.h>
+#include <linux/trace_seq.h>
+
+#include "hfi.h"
+
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM hfi1_misc
+
+TRACE_EVENT(hfi1_interrupt,
+ TP_PROTO(struct hfi1_devdata *dd, const struct is_table *is_entry,
+ int src),
+ TP_ARGS(dd, is_entry, src),
+ TP_STRUCT__entry(DD_DEV_ENTRY(dd)
+ __array(char, buf, 64)
+ __field(int, src)
+ ),
+ TP_fast_assign(DD_DEV_ASSIGN(dd)
+ is_entry->is_name(__entry->buf, 64,
+ src - is_entry->start);
+ __entry->src = src;
+ ),
+ TP_printk("[%s] source: %s [%d]", __get_str(dev), __entry->buf,
+ __entry->src)
+);
+
+#endif /* __HFI1_TRACE_MISC_H */
+
+#undef TRACE_INCLUDE_PATH
+#undef TRACE_INCLUDE_FILE
+#define TRACE_INCLUDE_PATH .
+#define TRACE_INCLUDE_FILE trace_misc
+#include <trace/define_trace.h>
diff --git a/drivers/infiniband/hw/hfi1/trace_rc.h b/drivers/infiniband/hw/hfi1/trace_rc.h
new file mode 100644
index 000000000000..5ea5005f9f41
--- /dev/null
+++ b/drivers/infiniband/hw/hfi1/trace_rc.h
@@ -0,0 +1,123 @@
+/*
+* Copyright(c) 2015, 2016 Intel Corporation.
+*
+* This file is provided under a dual BSD/GPLv2 license. When using or
+* redistributing this file, you may do so under either license.
+*
+* GPL LICENSE SUMMARY
+*
+* This program is free software; you can redistribute it and/or modify
+* it under the terms of version 2 of the GNU General Public License as
+* published by the Free Software Foundation.
+*
+* This program is distributed in the hope that it will be useful, but
+* WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+* General Public License for more details.
+*
+* BSD LICENSE
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions
+* are met:
+*
+* - Redistributions of source code must retain the above copyright
+* notice, this list of conditions and the following disclaimer.
+* - Redistributions in binary form must reproduce the above copyright
+* notice, this list of conditions and the following disclaimer in
+* the documentation and/or other materials provided with the
+* distribution.
+* - Neither the name of Intel Corporation nor the names of its
+* contributors may be used to endorse or promote products derived
+* from this software without specific prior written permission.
+*
+* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*
+*/
+#if !defined(__HFI1_TRACE_RC_H) || defined(TRACE_HEADER_MULTI_READ)
+#define __HFI1_TRACE_RC_H
+
+#include <linux/tracepoint.h>
+#include <linux/trace_seq.h>
+
+#include "hfi.h"
+
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM hfi1_rc
+
+DECLARE_EVENT_CLASS(hfi1_rc_template,
+ TP_PROTO(struct rvt_qp *qp, u32 psn),
+ TP_ARGS(qp, psn),
+ TP_STRUCT__entry(
+ DD_DEV_ENTRY(dd_from_ibdev(qp->ibqp.device))
+ __field(u32, qpn)
+ __field(u32, s_flags)
+ __field(u32, psn)
+ __field(u32, s_psn)
+ __field(u32, s_next_psn)
+ __field(u32, s_sending_psn)
+ __field(u32, s_sending_hpsn)
+ __field(u32, r_psn)
+ ),
+ TP_fast_assign(
+ DD_DEV_ASSIGN(dd_from_ibdev(qp->ibqp.device))
+ __entry->qpn = qp->ibqp.qp_num;
+ __entry->s_flags = qp->s_flags;
+ __entry->psn = psn;
+ __entry->s_psn = qp->s_psn;
+ __entry->s_next_psn = qp->s_next_psn;
+ __entry->s_sending_psn = qp->s_sending_psn;
+ __entry->s_sending_hpsn = qp->s_sending_hpsn;
+ __entry->r_psn = qp->r_psn;
+ ),
+ TP_printk(
+ "[%s] qpn 0x%x s_flags 0x%x psn 0x%x s_psn 0x%x s_next_psn 0x%x s_sending_psn 0x%x sending_hpsn 0x%x r_psn 0x%x",
+ __get_str(dev),
+ __entry->qpn,
+ __entry->s_flags,
+ __entry->psn,
+ __entry->s_psn,
+ __entry->s_next_psn,
+ __entry->s_sending_psn,
+ __entry->s_sending_hpsn,
+ __entry->r_psn
+ )
+);
+
+DEFINE_EVENT(hfi1_rc_template, hfi1_sendcomplete,
+ TP_PROTO(struct rvt_qp *qp, u32 psn),
+ TP_ARGS(qp, psn)
+);
+
+DEFINE_EVENT(hfi1_rc_template, hfi1_ack,
+ TP_PROTO(struct rvt_qp *qp, u32 psn),
+ TP_ARGS(qp, psn)
+);
+
+DEFINE_EVENT(hfi1_rc_template, hfi1_timeout,
+ TP_PROTO(struct rvt_qp *qp, u32 psn),
+ TP_ARGS(qp, psn)
+);
+
+DEFINE_EVENT(hfi1_rc_template, hfi1_rcv_error,
+ TP_PROTO(struct rvt_qp *qp, u32 psn),
+ TP_ARGS(qp, psn)
+);
+
+#endif /* __HFI1_TRACE_RC_H */
+
+#undef TRACE_INCLUDE_PATH
+#undef TRACE_INCLUDE_FILE
+#define TRACE_INCLUDE_PATH .
+#define TRACE_INCLUDE_FILE trace_rc
+#include <trace/define_trace.h>
diff --git a/drivers/infiniband/hw/hfi1/trace_rx.h b/drivers/infiniband/hw/hfi1/trace_rx.h
new file mode 100644
index 000000000000..9ba1f615ec95
--- /dev/null
+++ b/drivers/infiniband/hw/hfi1/trace_rx.h
@@ -0,0 +1,322 @@
+/*
+ * Copyright(c) 2015, 2016 Intel Corporation.
+ *
+ * This file is provided under a dual BSD/GPLv2 license. When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * BSD LICENSE
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * - Neither the name of Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+#if !defined(__HFI1_TRACE_RX_H) || defined(TRACE_HEADER_MULTI_READ)
+#define __HFI1_TRACE_RX_H
+
+#include <linux/tracepoint.h>
+#include <linux/trace_seq.h>
+
+#include "hfi.h"
+
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM hfi1_rx
+
+TRACE_EVENT(hfi1_rcvhdr,
+ TP_PROTO(struct hfi1_devdata *dd,
+ u32 ctxt,
+ u64 eflags,
+ u32 etype,
+ u32 hlen,
+ u32 tlen,
+ u32 updegr,
+ u32 etail
+ ),
+ TP_ARGS(dd, ctxt, eflags, etype, hlen, tlen, updegr, etail),
+ TP_STRUCT__entry(DD_DEV_ENTRY(dd)
+ __field(u64, eflags)
+ __field(u32, ctxt)
+ __field(u32, etype)
+ __field(u32, hlen)
+ __field(u32, tlen)
+ __field(u32, updegr)
+ __field(u32, etail)
+ ),
+ TP_fast_assign(DD_DEV_ASSIGN(dd);
+ __entry->eflags = eflags;
+ __entry->ctxt = ctxt;
+ __entry->etype = etype;
+ __entry->hlen = hlen;
+ __entry->tlen = tlen;
+ __entry->updegr = updegr;
+ __entry->etail = etail;
+ ),
+ TP_printk(
+ "[%s] ctxt %d eflags 0x%llx etype %d,%s hlen %d tlen %d updegr %d etail %d",
+ __get_str(dev),
+ __entry->ctxt,
+ __entry->eflags,
+ __entry->etype, show_packettype(__entry->etype),
+ __entry->hlen,
+ __entry->tlen,
+ __entry->updegr,
+ __entry->etail
+ )
+);
+
+TRACE_EVENT(hfi1_receive_interrupt,
+ TP_PROTO(struct hfi1_devdata *dd, u32 ctxt),
+ TP_ARGS(dd, ctxt),
+ TP_STRUCT__entry(DD_DEV_ENTRY(dd)
+ __field(u32, ctxt)
+ __field(u8, slow_path)
+ __field(u8, dma_rtail)
+ ),
+ TP_fast_assign(DD_DEV_ASSIGN(dd);
+ __entry->ctxt = ctxt;
+ if (dd->rcd[ctxt]->do_interrupt ==
+ &handle_receive_interrupt) {
+ __entry->slow_path = 1;
+ __entry->dma_rtail = 0xFF;
+ } else if (dd->rcd[ctxt]->do_interrupt ==
+ &handle_receive_interrupt_dma_rtail){
+ __entry->dma_rtail = 1;
+ __entry->slow_path = 0;
+ } else if (dd->rcd[ctxt]->do_interrupt ==
+ &handle_receive_interrupt_nodma_rtail) {
+ __entry->dma_rtail = 0;
+ __entry->slow_path = 0;
+ }
+ ),
+ TP_printk("[%s] ctxt %d SlowPath: %d DmaRtail: %d",
+ __get_str(dev),
+ __entry->ctxt,
+ __entry->slow_path,
+ __entry->dma_rtail
+ )
+);
+
+TRACE_EVENT(hfi1_exp_tid_reg,
+ TP_PROTO(unsigned int ctxt, u16 subctxt, u32 rarr,
+ u32 npages, unsigned long va, unsigned long pa,
+ dma_addr_t dma),
+ TP_ARGS(ctxt, subctxt, rarr, npages, va, pa, dma),
+ TP_STRUCT__entry(
+ __field(unsigned int, ctxt)
+ __field(u16, subctxt)
+ __field(u32, rarr)
+ __field(u32, npages)
+ __field(unsigned long, va)
+ __field(unsigned long, pa)
+ __field(dma_addr_t, dma)
+ ),
+ TP_fast_assign(
+ __entry->ctxt = ctxt;
+ __entry->subctxt = subctxt;
+ __entry->rarr = rarr;
+ __entry->npages = npages;
+ __entry->va = va;
+ __entry->pa = pa;
+ __entry->dma = dma;
+ ),
+ TP_printk("[%u:%u] entry:%u, %u pages @ 0x%lx, va:0x%lx dma:0x%llx",
+ __entry->ctxt,
+ __entry->subctxt,
+ __entry->rarr,
+ __entry->npages,
+ __entry->pa,
+ __entry->va,
+ __entry->dma
+ )
+ );
+
+TRACE_EVENT(hfi1_exp_tid_unreg,
+ TP_PROTO(unsigned int ctxt, u16 subctxt, u32 rarr, u32 npages,
+ unsigned long va, unsigned long pa, dma_addr_t dma),
+ TP_ARGS(ctxt, subctxt, rarr, npages, va, pa, dma),
+ TP_STRUCT__entry(
+ __field(unsigned int, ctxt)
+ __field(u16, subctxt)
+ __field(u32, rarr)
+ __field(u32, npages)
+ __field(unsigned long, va)
+ __field(unsigned long, pa)
+ __field(dma_addr_t, dma)
+ ),
+ TP_fast_assign(
+ __entry->ctxt = ctxt;
+ __entry->subctxt = subctxt;
+ __entry->rarr = rarr;
+ __entry->npages = npages;
+ __entry->va = va;
+ __entry->pa = pa;
+ __entry->dma = dma;
+ ),
+ TP_printk("[%u:%u] entry:%u, %u pages @ 0x%lx, va:0x%lx dma:0x%llx",
+ __entry->ctxt,
+ __entry->subctxt,
+ __entry->rarr,
+ __entry->npages,
+ __entry->pa,
+ __entry->va,
+ __entry->dma
+ )
+ );
+
+TRACE_EVENT(hfi1_exp_tid_inval,
+ TP_PROTO(unsigned int ctxt, u16 subctxt, unsigned long va, u32 rarr,
+ u32 npages, dma_addr_t dma),
+ TP_ARGS(ctxt, subctxt, va, rarr, npages, dma),
+ TP_STRUCT__entry(
+ __field(unsigned int, ctxt)
+ __field(u16, subctxt)
+ __field(unsigned long, va)
+ __field(u32, rarr)
+ __field(u32, npages)
+ __field(dma_addr_t, dma)
+ ),
+ TP_fast_assign(
+ __entry->ctxt = ctxt;
+ __entry->subctxt = subctxt;
+ __entry->va = va;
+ __entry->rarr = rarr;
+ __entry->npages = npages;
+ __entry->dma = dma;
+ ),
+ TP_printk("[%u:%u] entry:%u, %u pages @ 0x%lx dma: 0x%llx",
+ __entry->ctxt,
+ __entry->subctxt,
+ __entry->rarr,
+ __entry->npages,
+ __entry->va,
+ __entry->dma
+ )
+ );
+
+TRACE_EVENT(hfi1_mmu_invalidate,
+ TP_PROTO(unsigned int ctxt, u16 subctxt, const char *type,
+ unsigned long start, unsigned long end),
+ TP_ARGS(ctxt, subctxt, type, start, end),
+ TP_STRUCT__entry(
+ __field(unsigned int, ctxt)
+ __field(u16, subctxt)
+ __string(type, type)
+ __field(unsigned long, start)
+ __field(unsigned long, end)
+ ),
+ TP_fast_assign(
+ __entry->ctxt = ctxt;
+ __entry->subctxt = subctxt;
+ __assign_str(type, type);
+ __entry->start = start;
+ __entry->end = end;
+ ),
+ TP_printk("[%3u:%02u] MMU Invalidate (%s) 0x%lx - 0x%lx",
+ __entry->ctxt,
+ __entry->subctxt,
+ __get_str(type),
+ __entry->start,
+ __entry->end
+ )
+ );
+
+#define SNOOP_PRN \
+ "slid %.4x dlid %.4x qpn 0x%.6x opcode 0x%.2x,%s " \
+ "svc lvl %d pkey 0x%.4x [header = %d bytes] [data = %d bytes]"
+
+TRACE_EVENT(snoop_capture,
+ TP_PROTO(struct hfi1_devdata *dd,
+ int hdr_len,
+ struct hfi1_ib_header *hdr,
+ int data_len,
+ void *data),
+ TP_ARGS(dd, hdr_len, hdr, data_len, data),
+ TP_STRUCT__entry(
+ DD_DEV_ENTRY(dd)
+ __field(u16, slid)
+ __field(u16, dlid)
+ __field(u32, qpn)
+ __field(u8, opcode)
+ __field(u8, sl)
+ __field(u16, pkey)
+ __field(u32, hdr_len)
+ __field(u32, data_len)
+ __field(u8, lnh)
+ __dynamic_array(u8, raw_hdr, hdr_len)
+ __dynamic_array(u8, raw_pkt, data_len)
+ ),
+ TP_fast_assign(
+ struct hfi1_other_headers *ohdr;
+
+ __entry->lnh = (u8)(be16_to_cpu(hdr->lrh[0]) & 3);
+ if (__entry->lnh == HFI1_LRH_BTH)
+ ohdr = &hdr->u.oth;
+ else
+ ohdr = &hdr->u.l.oth;
+ DD_DEV_ASSIGN(dd);
+ __entry->slid = be16_to_cpu(hdr->lrh[3]);
+ __entry->dlid = be16_to_cpu(hdr->lrh[1]);
+ __entry->qpn = be32_to_cpu(ohdr->bth[1]) & RVT_QPN_MASK;
+ __entry->opcode = (be32_to_cpu(ohdr->bth[0]) >> 24) & 0xff;
+ __entry->sl = (u8)(be16_to_cpu(hdr->lrh[0]) >> 4) & 0xf;
+ __entry->pkey = be32_to_cpu(ohdr->bth[0]) & 0xffff;
+ __entry->hdr_len = hdr_len;
+ __entry->data_len = data_len;
+ memcpy(__get_dynamic_array(raw_hdr), hdr, hdr_len);
+ memcpy(__get_dynamic_array(raw_pkt), data, data_len);
+ ),
+ TP_printk(
+ "[%s] " SNOOP_PRN,
+ __get_str(dev),
+ __entry->slid,
+ __entry->dlid,
+ __entry->qpn,
+ __entry->opcode,
+ show_ib_opcode(__entry->opcode),
+ __entry->sl,
+ __entry->pkey,
+ __entry->hdr_len,
+ __entry->data_len
+ )
+);
+
+#endif /* __HFI1_TRACE_RX_H */
+
+#undef TRACE_INCLUDE_PATH
+#undef TRACE_INCLUDE_FILE
+#define TRACE_INCLUDE_PATH .
+#define TRACE_INCLUDE_FILE trace_rx
+#include <trace/define_trace.h>
diff --git a/drivers/infiniband/hw/hfi1/trace_tx.h b/drivers/infiniband/hw/hfi1/trace_tx.h
new file mode 100644
index 000000000000..415d6be42c5d
--- /dev/null
+++ b/drivers/infiniband/hw/hfi1/trace_tx.h
@@ -0,0 +1,642 @@
+/*
+ * Copyright(c) 2015, 2016 Intel Corporation.
+ *
+ * This file is provided under a dual BSD/GPLv2 license. When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * BSD LICENSE
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * - Neither the name of Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+#if !defined(__HFI1_TRACE_TX_H) || defined(TRACE_HEADER_MULTI_READ)
+#define __HFI1_TRACE_TX_H
+
+#include <linux/tracepoint.h>
+#include <linux/trace_seq.h>
+
+#include "hfi.h"
+#include "mad.h"
+#include "sdma.h"
+
+const char *parse_sdma_flags(struct trace_seq *p, u64 desc0, u64 desc1);
+
+#define __parse_sdma_flags(desc0, desc1) parse_sdma_flags(p, desc0, desc1)
+
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM hfi1_tx
+
+TRACE_EVENT(hfi1_piofree,
+ TP_PROTO(struct send_context *sc, int extra),
+ TP_ARGS(sc, extra),
+ TP_STRUCT__entry(DD_DEV_ENTRY(sc->dd)
+ __field(u32, sw_index)
+ __field(u32, hw_context)
+ __field(int, extra)
+ ),
+ TP_fast_assign(DD_DEV_ASSIGN(sc->dd);
+ __entry->sw_index = sc->sw_index;
+ __entry->hw_context = sc->hw_context;
+ __entry->extra = extra;
+ ),
+ TP_printk("[%s] ctxt %u(%u) extra %d",
+ __get_str(dev),
+ __entry->sw_index,
+ __entry->hw_context,
+ __entry->extra
+ )
+);
+
+TRACE_EVENT(hfi1_wantpiointr,
+ TP_PROTO(struct send_context *sc, u32 needint, u64 credit_ctrl),
+ TP_ARGS(sc, needint, credit_ctrl),
+ TP_STRUCT__entry(DD_DEV_ENTRY(sc->dd)
+ __field(u32, sw_index)
+ __field(u32, hw_context)
+ __field(u32, needint)
+ __field(u64, credit_ctrl)
+ ),
+ TP_fast_assign(DD_DEV_ASSIGN(sc->dd);
+ __entry->sw_index = sc->sw_index;
+ __entry->hw_context = sc->hw_context;
+ __entry->needint = needint;
+ __entry->credit_ctrl = credit_ctrl;
+ ),
+ TP_printk("[%s] ctxt %u(%u) on %d credit_ctrl 0x%llx",
+ __get_str(dev),
+ __entry->sw_index,
+ __entry->hw_context,
+ __entry->needint,
+ (unsigned long long)__entry->credit_ctrl
+ )
+);
+
+DECLARE_EVENT_CLASS(hfi1_qpsleepwakeup_template,
+ TP_PROTO(struct rvt_qp *qp, u32 flags),
+ TP_ARGS(qp, flags),
+ TP_STRUCT__entry(
+ DD_DEV_ENTRY(dd_from_ibdev(qp->ibqp.device))
+ __field(u32, qpn)
+ __field(u32, flags)
+ __field(u32, s_flags)
+ ),
+ TP_fast_assign(
+ DD_DEV_ASSIGN(dd_from_ibdev(qp->ibqp.device))
+ __entry->flags = flags;
+ __entry->qpn = qp->ibqp.qp_num;
+ __entry->s_flags = qp->s_flags;
+ ),
+ TP_printk(
+ "[%s] qpn 0x%x flags 0x%x s_flags 0x%x",
+ __get_str(dev),
+ __entry->qpn,
+ __entry->flags,
+ __entry->s_flags
+ )
+);
+
+DEFINE_EVENT(hfi1_qpsleepwakeup_template, hfi1_qpwakeup,
+ TP_PROTO(struct rvt_qp *qp, u32 flags),
+ TP_ARGS(qp, flags));
+
+DEFINE_EVENT(hfi1_qpsleepwakeup_template, hfi1_qpsleep,
+ TP_PROTO(struct rvt_qp *qp, u32 flags),
+ TP_ARGS(qp, flags));
+
+TRACE_EVENT(hfi1_sdma_descriptor,
+ TP_PROTO(struct sdma_engine *sde,
+ u64 desc0,
+ u64 desc1,
+ u16 e,
+ void *descp),
+ TP_ARGS(sde, desc0, desc1, e, descp),
+ TP_STRUCT__entry(DD_DEV_ENTRY(sde->dd)
+ __field(void *, descp)
+ __field(u64, desc0)
+ __field(u64, desc1)
+ __field(u16, e)
+ __field(u8, idx)
+ ),
+ TP_fast_assign(DD_DEV_ASSIGN(sde->dd);
+ __entry->desc0 = desc0;
+ __entry->desc1 = desc1;
+ __entry->idx = sde->this_idx;
+ __entry->descp = descp;
+ __entry->e = e;
+ ),
+ TP_printk(
+ "[%s] SDE(%u) flags:%s addr:0x%016llx gen:%u len:%u d0:%016llx d1:%016llx to %p,%u",
+ __get_str(dev),
+ __entry->idx,
+ __parse_sdma_flags(__entry->desc0, __entry->desc1),
+ (__entry->desc0 >> SDMA_DESC0_PHY_ADDR_SHIFT) &
+ SDMA_DESC0_PHY_ADDR_MASK,
+ (u8)((__entry->desc1 >> SDMA_DESC1_GENERATION_SHIFT) &
+ SDMA_DESC1_GENERATION_MASK),
+ (u16)((__entry->desc0 >> SDMA_DESC0_BYTE_COUNT_SHIFT) &
+ SDMA_DESC0_BYTE_COUNT_MASK),
+ __entry->desc0,
+ __entry->desc1,
+ __entry->descp,
+ __entry->e
+ )
+);
+
+TRACE_EVENT(hfi1_sdma_engine_select,
+ TP_PROTO(struct hfi1_devdata *dd, u32 sel, u8 vl, u8 idx),
+ TP_ARGS(dd, sel, vl, idx),
+ TP_STRUCT__entry(DD_DEV_ENTRY(dd)
+ __field(u32, sel)
+ __field(u8, vl)
+ __field(u8, idx)
+ ),
+ TP_fast_assign(DD_DEV_ASSIGN(dd);
+ __entry->sel = sel;
+ __entry->vl = vl;
+ __entry->idx = idx;
+ ),
+ TP_printk("[%s] selecting SDE %u sel 0x%x vl %u",
+ __get_str(dev),
+ __entry->idx,
+ __entry->sel,
+ __entry->vl
+ )
+);
+
+DECLARE_EVENT_CLASS(hfi1_sdma_engine_class,
+ TP_PROTO(struct sdma_engine *sde, u64 status),
+ TP_ARGS(sde, status),
+ TP_STRUCT__entry(DD_DEV_ENTRY(sde->dd)
+ __field(u64, status)
+ __field(u8, idx)
+ ),
+ TP_fast_assign(DD_DEV_ASSIGN(sde->dd);
+ __entry->status = status;
+ __entry->idx = sde->this_idx;
+ ),
+ TP_printk("[%s] SDE(%u) status %llx",
+ __get_str(dev),
+ __entry->idx,
+ (unsigned long long)__entry->status
+ )
+);
+
+DEFINE_EVENT(hfi1_sdma_engine_class, hfi1_sdma_engine_interrupt,
+ TP_PROTO(struct sdma_engine *sde, u64 status),
+ TP_ARGS(sde, status)
+);
+
+DEFINE_EVENT(hfi1_sdma_engine_class, hfi1_sdma_engine_progress,
+ TP_PROTO(struct sdma_engine *sde, u64 status),
+ TP_ARGS(sde, status)
+);
+
+DECLARE_EVENT_CLASS(hfi1_sdma_ahg_ad,
+ TP_PROTO(struct sdma_engine *sde, int aidx),
+ TP_ARGS(sde, aidx),
+ TP_STRUCT__entry(DD_DEV_ENTRY(sde->dd)
+ __field(int, aidx)
+ __field(u8, idx)
+ ),
+ TP_fast_assign(DD_DEV_ASSIGN(sde->dd);
+ __entry->idx = sde->this_idx;
+ __entry->aidx = aidx;
+ ),
+ TP_printk("[%s] SDE(%u) aidx %d",
+ __get_str(dev),
+ __entry->idx,
+ __entry->aidx
+ )
+);
+
+DEFINE_EVENT(hfi1_sdma_ahg_ad, hfi1_ahg_allocate,
+ TP_PROTO(struct sdma_engine *sde, int aidx),
+ TP_ARGS(sde, aidx));
+
+DEFINE_EVENT(hfi1_sdma_ahg_ad, hfi1_ahg_deallocate,
+ TP_PROTO(struct sdma_engine *sde, int aidx),
+ TP_ARGS(sde, aidx));
+
+#ifdef CONFIG_HFI1_DEBUG_SDMA_ORDER
+TRACE_EVENT(hfi1_sdma_progress,
+ TP_PROTO(struct sdma_engine *sde,
+ u16 hwhead,
+ u16 swhead,
+ struct sdma_txreq *txp
+ ),
+ TP_ARGS(sde, hwhead, swhead, txp),
+ TP_STRUCT__entry(DD_DEV_ENTRY(sde->dd)
+ __field(u64, sn)
+ __field(u16, hwhead)
+ __field(u16, swhead)
+ __field(u16, txnext)
+ __field(u16, tx_tail)
+ __field(u16, tx_head)
+ __field(u8, idx)
+ ),
+ TP_fast_assign(DD_DEV_ASSIGN(sde->dd);
+ __entry->hwhead = hwhead;
+ __entry->swhead = swhead;
+ __entry->tx_tail = sde->tx_tail;
+ __entry->tx_head = sde->tx_head;
+ __entry->txnext = txp ? txp->next_descq_idx : ~0;
+ __entry->idx = sde->this_idx;
+ __entry->sn = txp ? txp->sn : ~0;
+ ),
+ TP_printk(
+ "[%s] SDE(%u) sn %llu hwhead %u swhead %u next_descq_idx %u tx_head %u tx_tail %u",
+ __get_str(dev),
+ __entry->idx,
+ __entry->sn,
+ __entry->hwhead,
+ __entry->swhead,
+ __entry->txnext,
+ __entry->tx_head,
+ __entry->tx_tail
+ )
+);
+#else
+TRACE_EVENT(hfi1_sdma_progress,
+ TP_PROTO(struct sdma_engine *sde,
+ u16 hwhead, u16 swhead,
+ struct sdma_txreq *txp
+ ),
+ TP_ARGS(sde, hwhead, swhead, txp),
+ TP_STRUCT__entry(DD_DEV_ENTRY(sde->dd)
+ __field(u16, hwhead)
+ __field(u16, swhead)
+ __field(u16, txnext)
+ __field(u16, tx_tail)
+ __field(u16, tx_head)
+ __field(u8, idx)
+ ),
+ TP_fast_assign(DD_DEV_ASSIGN(sde->dd);
+ __entry->hwhead = hwhead;
+ __entry->swhead = swhead;
+ __entry->tx_tail = sde->tx_tail;
+ __entry->tx_head = sde->tx_head;
+ __entry->txnext = txp ? txp->next_descq_idx : ~0;
+ __entry->idx = sde->this_idx;
+ ),
+ TP_printk(
+ "[%s] SDE(%u) hwhead %u swhead %u next_descq_idx %u tx_head %u tx_tail %u",
+ __get_str(dev),
+ __entry->idx,
+ __entry->hwhead,
+ __entry->swhead,
+ __entry->txnext,
+ __entry->tx_head,
+ __entry->tx_tail
+ )
+);
+#endif
+
+DECLARE_EVENT_CLASS(hfi1_sdma_sn,
+ TP_PROTO(struct sdma_engine *sde, u64 sn),
+ TP_ARGS(sde, sn),
+ TP_STRUCT__entry(DD_DEV_ENTRY(sde->dd)
+ __field(u64, sn)
+ __field(u8, idx)
+ ),
+ TP_fast_assign(DD_DEV_ASSIGN(sde->dd);
+ __entry->sn = sn;
+ __entry->idx = sde->this_idx;
+ ),
+ TP_printk("[%s] SDE(%u) sn %llu",
+ __get_str(dev),
+ __entry->idx,
+ __entry->sn
+ )
+);
+
+DEFINE_EVENT(hfi1_sdma_sn, hfi1_sdma_out_sn,
+ TP_PROTO(
+ struct sdma_engine *sde,
+ u64 sn
+ ),
+ TP_ARGS(sde, sn)
+);
+
+DEFINE_EVENT(hfi1_sdma_sn, hfi1_sdma_in_sn,
+ TP_PROTO(struct sdma_engine *sde, u64 sn),
+ TP_ARGS(sde, sn)
+);
+
+#define USDMA_HDR_FORMAT \
+ "[%s:%u:%u:%u] PBC=(0x%x 0x%x) LRH=(0x%x 0x%x) BTH=(0x%x 0x%x 0x%x) KDETH=(0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x) TIDVal=0x%x"
+
+TRACE_EVENT(hfi1_sdma_user_header,
+ TP_PROTO(struct hfi1_devdata *dd, u16 ctxt, u8 subctxt, u16 req,
+ struct hfi1_pkt_header *hdr, u32 tidval),
+ TP_ARGS(dd, ctxt, subctxt, req, hdr, tidval),
+ TP_STRUCT__entry(
+ DD_DEV_ENTRY(dd)
+ __field(u16, ctxt)
+ __field(u8, subctxt)
+ __field(u16, req)
+ __field(u32, pbc0)
+ __field(u32, pbc1)
+ __field(u32, lrh0)
+ __field(u32, lrh1)
+ __field(u32, bth0)
+ __field(u32, bth1)
+ __field(u32, bth2)
+ __field(u32, kdeth0)
+ __field(u32, kdeth1)
+ __field(u32, kdeth2)
+ __field(u32, kdeth3)
+ __field(u32, kdeth4)
+ __field(u32, kdeth5)
+ __field(u32, kdeth6)
+ __field(u32, kdeth7)
+ __field(u32, kdeth8)
+ __field(u32, tidval)
+ ),
+ TP_fast_assign(
+ __le32 *pbc = (__le32 *)hdr->pbc;
+ __be32 *lrh = (__be32 *)hdr->lrh;
+ __be32 *bth = (__be32 *)hdr->bth;
+ __le32 *kdeth = (__le32 *)&hdr->kdeth;
+
+ DD_DEV_ASSIGN(dd);
+ __entry->ctxt = ctxt;
+ __entry->subctxt = subctxt;
+ __entry->req = req;
+ __entry->pbc0 = le32_to_cpu(pbc[0]);
+ __entry->pbc1 = le32_to_cpu(pbc[1]);
+ __entry->lrh0 = be32_to_cpu(lrh[0]);
+ __entry->lrh1 = be32_to_cpu(lrh[1]);
+ __entry->bth0 = be32_to_cpu(bth[0]);
+ __entry->bth1 = be32_to_cpu(bth[1]);
+ __entry->bth2 = be32_to_cpu(bth[2]);
+ __entry->kdeth0 = le32_to_cpu(kdeth[0]);
+ __entry->kdeth1 = le32_to_cpu(kdeth[1]);
+ __entry->kdeth2 = le32_to_cpu(kdeth[2]);
+ __entry->kdeth3 = le32_to_cpu(kdeth[3]);
+ __entry->kdeth4 = le32_to_cpu(kdeth[4]);
+ __entry->kdeth5 = le32_to_cpu(kdeth[5]);
+ __entry->kdeth6 = le32_to_cpu(kdeth[6]);
+ __entry->kdeth7 = le32_to_cpu(kdeth[7]);
+ __entry->kdeth8 = le32_to_cpu(kdeth[8]);
+ __entry->tidval = tidval;
+ ),
+ TP_printk(USDMA_HDR_FORMAT,
+ __get_str(dev),
+ __entry->ctxt,
+ __entry->subctxt,
+ __entry->req,
+ __entry->pbc1,
+ __entry->pbc0,
+ __entry->lrh0,
+ __entry->lrh1,
+ __entry->bth0,
+ __entry->bth1,
+ __entry->bth2,
+ __entry->kdeth0,
+ __entry->kdeth1,
+ __entry->kdeth2,
+ __entry->kdeth3,
+ __entry->kdeth4,
+ __entry->kdeth5,
+ __entry->kdeth6,
+ __entry->kdeth7,
+ __entry->kdeth8,
+ __entry->tidval
+ )
+);
+
+#define SDMA_UREQ_FMT \
+ "[%s:%u:%u] ver/op=0x%x, iovcnt=%u, npkts=%u, frag=%u, idx=%u"
+TRACE_EVENT(hfi1_sdma_user_reqinfo,
+ TP_PROTO(struct hfi1_devdata *dd, u16 ctxt, u8 subctxt, u16 *i),
+ TP_ARGS(dd, ctxt, subctxt, i),
+ TP_STRUCT__entry(
+ DD_DEV_ENTRY(dd);
+ __field(u16, ctxt)
+ __field(u8, subctxt)
+ __field(u8, ver_opcode)
+ __field(u8, iovcnt)
+ __field(u16, npkts)
+ __field(u16, fragsize)
+ __field(u16, comp_idx)
+ ),
+ TP_fast_assign(
+ DD_DEV_ASSIGN(dd);
+ __entry->ctxt = ctxt;
+ __entry->subctxt = subctxt;
+ __entry->ver_opcode = i[0] & 0xff;
+ __entry->iovcnt = (i[0] >> 8) & 0xff;
+ __entry->npkts = i[1];
+ __entry->fragsize = i[2];
+ __entry->comp_idx = i[3];
+ ),
+ TP_printk(SDMA_UREQ_FMT,
+ __get_str(dev),
+ __entry->ctxt,
+ __entry->subctxt,
+ __entry->ver_opcode,
+ __entry->iovcnt,
+ __entry->npkts,
+ __entry->fragsize,
+ __entry->comp_idx
+ )
+);
+
+#define usdma_complete_name(st) { st, #st }
+#define show_usdma_complete_state(st) \
+ __print_symbolic(st, \
+ usdma_complete_name(FREE), \
+ usdma_complete_name(QUEUED), \
+ usdma_complete_name(COMPLETE), \
+ usdma_complete_name(ERROR))
+
+TRACE_EVENT(hfi1_sdma_user_completion,
+ TP_PROTO(struct hfi1_devdata *dd, u16 ctxt, u8 subctxt, u16 idx,
+ u8 state, int code),
+ TP_ARGS(dd, ctxt, subctxt, idx, state, code),
+ TP_STRUCT__entry(
+ DD_DEV_ENTRY(dd)
+ __field(u16, ctxt)
+ __field(u8, subctxt)
+ __field(u16, idx)
+ __field(u8, state)
+ __field(int, code)
+ ),
+ TP_fast_assign(
+ DD_DEV_ASSIGN(dd);
+ __entry->ctxt = ctxt;
+ __entry->subctxt = subctxt;
+ __entry->idx = idx;
+ __entry->state = state;
+ __entry->code = code;
+ ),
+ TP_printk("[%s:%u:%u:%u] SDMA completion state %s (%d)",
+ __get_str(dev), __entry->ctxt, __entry->subctxt,
+ __entry->idx, show_usdma_complete_state(__entry->state),
+ __entry->code)
+);
+
+const char *print_u32_array(struct trace_seq *, u32 *, int);
+#define __print_u32_hex(arr, len) print_u32_array(p, arr, len)
+
+TRACE_EVENT(hfi1_sdma_user_header_ahg,
+ TP_PROTO(struct hfi1_devdata *dd, u16 ctxt, u8 subctxt, u16 req,
+ u8 sde, u8 ahgidx, u32 *ahg, int len, u32 tidval),
+ TP_ARGS(dd, ctxt, subctxt, req, sde, ahgidx, ahg, len, tidval),
+ TP_STRUCT__entry(
+ DD_DEV_ENTRY(dd)
+ __field(u16, ctxt)
+ __field(u8, subctxt)
+ __field(u16, req)
+ __field(u8, sde)
+ __field(u8, idx)
+ __field(int, len)
+ __field(u32, tidval)
+ __array(u32, ahg, 10)
+ ),
+ TP_fast_assign(
+ DD_DEV_ASSIGN(dd);
+ __entry->ctxt = ctxt;
+ __entry->subctxt = subctxt;
+ __entry->req = req;
+ __entry->sde = sde;
+ __entry->idx = ahgidx;
+ __entry->len = len;
+ __entry->tidval = tidval;
+ memcpy(__entry->ahg, ahg, len * sizeof(u32));
+ ),
+ TP_printk("[%s:%u:%u:%u] (SDE%u/AHG%u) ahg[0-%d]=(%s) TIDVal=0x%x",
+ __get_str(dev),
+ __entry->ctxt,
+ __entry->subctxt,
+ __entry->req,
+ __entry->sde,
+ __entry->idx,
+ __entry->len - 1,
+ __print_u32_hex(__entry->ahg, __entry->len),
+ __entry->tidval
+ )
+);
+
+TRACE_EVENT(hfi1_sdma_state,
+ TP_PROTO(struct sdma_engine *sde,
+ const char *cstate,
+ const char *nstate
+ ),
+ TP_ARGS(sde, cstate, nstate),
+ TP_STRUCT__entry(DD_DEV_ENTRY(sde->dd)
+ __string(curstate, cstate)
+ __string(newstate, nstate)
+ ),
+ TP_fast_assign(DD_DEV_ASSIGN(sde->dd);
+ __assign_str(curstate, cstate);
+ __assign_str(newstate, nstate);
+ ),
+ TP_printk("[%s] current state %s new state %s",
+ __get_str(dev),
+ __get_str(curstate),
+ __get_str(newstate)
+ )
+);
+
+#define BCT_FORMAT \
+ "shared_limit %x vls 0-7 [%x,%x][%x,%x][%x,%x][%x,%x][%x,%x][%x,%x][%x,%x][%x,%x] 15 [%x,%x]"
+
+#define BCT(field) \
+ be16_to_cpu( \
+ ((struct buffer_control *)__get_dynamic_array(bct))->field \
+ )
+
+DECLARE_EVENT_CLASS(hfi1_bct_template,
+ TP_PROTO(struct hfi1_devdata *dd,
+ struct buffer_control *bc),
+ TP_ARGS(dd, bc),
+ TP_STRUCT__entry(DD_DEV_ENTRY(dd)
+ __dynamic_array(u8, bct, sizeof(*bc))
+ ),
+ TP_fast_assign(DD_DEV_ASSIGN(dd);
+ memcpy(__get_dynamic_array(bct), bc,
+ sizeof(*bc));
+ ),
+ TP_printk(BCT_FORMAT,
+ BCT(overall_shared_limit),
+
+ BCT(vl[0].dedicated),
+ BCT(vl[0].shared),
+
+ BCT(vl[1].dedicated),
+ BCT(vl[1].shared),
+
+ BCT(vl[2].dedicated),
+ BCT(vl[2].shared),
+
+ BCT(vl[3].dedicated),
+ BCT(vl[3].shared),
+
+ BCT(vl[4].dedicated),
+ BCT(vl[4].shared),
+
+ BCT(vl[5].dedicated),
+ BCT(vl[5].shared),
+
+ BCT(vl[6].dedicated),
+ BCT(vl[6].shared),
+
+ BCT(vl[7].dedicated),
+ BCT(vl[7].shared),
+
+ BCT(vl[15].dedicated),
+ BCT(vl[15].shared)
+ )
+);
+
+DEFINE_EVENT(hfi1_bct_template, bct_set,
+ TP_PROTO(struct hfi1_devdata *dd, struct buffer_control *bc),
+ TP_ARGS(dd, bc));
+
+DEFINE_EVENT(hfi1_bct_template, bct_get,
+ TP_PROTO(struct hfi1_devdata *dd, struct buffer_control *bc),
+ TP_ARGS(dd, bc));
+
+#endif /* __HFI1_TRACE_TX_H */
+
+#undef TRACE_INCLUDE_PATH
+#undef TRACE_INCLUDE_FILE
+#define TRACE_INCLUDE_PATH .
+#define TRACE_INCLUDE_FILE trace_tx
+#include <trace/define_trace.h>
diff --git a/drivers/infiniband/hw/hfi1/twsi.c b/drivers/infiniband/hw/hfi1/twsi.c
deleted file mode 100644
index e82e52a63d35..000000000000
--- a/drivers/infiniband/hw/hfi1/twsi.c
+++ /dev/null
@@ -1,489 +0,0 @@
-/*
- * Copyright(c) 2015, 2016 Intel Corporation.
- *
- * This file is provided under a dual BSD/GPLv2 license. When using or
- * redistributing this file, you may do so under either license.
- *
- * GPL LICENSE SUMMARY
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * BSD LICENSE
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * - Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * - Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * - Neither the name of Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
-
-#include <linux/delay.h>
-#include <linux/pci.h>
-#include <linux/vmalloc.h>
-
-#include "hfi.h"
-#include "twsi.h"
-
-/*
- * "Two Wire Serial Interface" support.
- *
- * Originally written for a not-quite-i2c serial eeprom, which is
- * still used on some supported boards. Later boards have added a
- * variety of other uses, most board-specific, so the bit-boffing
- * part has been split off to this file, while the other parts
- * have been moved to chip-specific files.
- *
- * We have also dropped all pretense of fully generic (e.g. pretend
- * we don't know whether '1' is the higher voltage) interface, as
- * the restrictions of the generic i2c interface (e.g. no access from
- * driver itself) make it unsuitable for this use.
- */
-
-#define READ_CMD 1
-#define WRITE_CMD 0
-
-/**
- * i2c_wait_for_writes - wait for a write
- * @dd: the hfi1_ib device
- *
- * We use this instead of udelay directly, so we can make sure
- * that previous register writes have been flushed all the way
- * to the chip. Since we are delaying anyway, the cost doesn't
- * hurt, and makes the bit twiddling more regular
- */
-static void i2c_wait_for_writes(struct hfi1_devdata *dd, u32 target)
-{
- /*
- * implicit read of EXTStatus is as good as explicit
- * read of scratch, if all we want to do is flush
- * writes.
- */
- hfi1_gpio_mod(dd, target, 0, 0, 0);
- rmb(); /* inlined, so prevent compiler reordering */
-}
-
-/*
- * QSFP modules are allowed to hold SCL low for 500uSec. Allow twice that
- * for "almost compliant" modules
- */
-#define SCL_WAIT_USEC 1000
-
-/* BUF_WAIT is time bus must be free between STOP or ACK and to next START.
- * Should be 20, but some chips need more.
- */
-#define TWSI_BUF_WAIT_USEC 60
-
-static void scl_out(struct hfi1_devdata *dd, u32 target, u8 bit)
-{
- u32 mask;
-
- udelay(1);
-
- mask = QSFP_HFI0_I2CCLK;
-
- /* SCL is meant to be bare-drain, so never set "OUT", just DIR */
- hfi1_gpio_mod(dd, target, 0, bit ? 0 : mask, mask);
-
- /*
- * Allow for slow slaves by simple
- * delay for falling edge, sampling on rise.
- */
- if (!bit) {
- udelay(2);
- } else {
- int rise_usec;
-
- for (rise_usec = SCL_WAIT_USEC; rise_usec > 0; rise_usec -= 2) {
- if (mask & hfi1_gpio_mod(dd, target, 0, 0, 0))
- break;
- udelay(2);
- }
- if (rise_usec <= 0)
- dd_dev_err(dd, "SCL interface stuck low > %d uSec\n",
- SCL_WAIT_USEC);
- }
- i2c_wait_for_writes(dd, target);
-}
-
-static u8 scl_in(struct hfi1_devdata *dd, u32 target, int wait)
-{
- u32 read_val, mask;
-
- mask = QSFP_HFI0_I2CCLK;
- /* SCL is meant to be bare-drain, so never set "OUT", just DIR */
- hfi1_gpio_mod(dd, target, 0, 0, mask);
- read_val = hfi1_gpio_mod(dd, target, 0, 0, 0);
- if (wait)
- i2c_wait_for_writes(dd, target);
- return (read_val & mask) >> GPIO_SCL_NUM;
-}
-
-static void sda_out(struct hfi1_devdata *dd, u32 target, u8 bit)
-{
- u32 mask;
-
- mask = QSFP_HFI0_I2CDAT;
-
- /* SDA is meant to be bare-drain, so never set "OUT", just DIR */
- hfi1_gpio_mod(dd, target, 0, bit ? 0 : mask, mask);
-
- i2c_wait_for_writes(dd, target);
- udelay(2);
-}
-
-static u8 sda_in(struct hfi1_devdata *dd, u32 target, int wait)
-{
- u32 read_val, mask;
-
- mask = QSFP_HFI0_I2CDAT;
- /* SDA is meant to be bare-drain, so never set "OUT", just DIR */
- hfi1_gpio_mod(dd, target, 0, 0, mask);
- read_val = hfi1_gpio_mod(dd, target, 0, 0, 0);
- if (wait)
- i2c_wait_for_writes(dd, target);
- return (read_val & mask) >> GPIO_SDA_NUM;
-}
-
-/**
- * i2c_ackrcv - see if ack following write is true
- * @dd: the hfi1_ib device
- */
-static int i2c_ackrcv(struct hfi1_devdata *dd, u32 target)
-{
- u8 ack_received;
-
- /* AT ENTRY SCL = LOW */
- /* change direction, ignore data */
- ack_received = sda_in(dd, target, 1);
- scl_out(dd, target, 1);
- ack_received = sda_in(dd, target, 1) == 0;
- scl_out(dd, target, 0);
- return ack_received;
-}
-
-static void stop_cmd(struct hfi1_devdata *dd, u32 target);
-
-/**
- * rd_byte - read a byte, sending STOP on last, else ACK
- * @dd: the hfi1_ib device
- *
- * Returns byte shifted out of device
- */
-static int rd_byte(struct hfi1_devdata *dd, u32 target, int last)
-{
- int bit_cntr, data;
-
- data = 0;
-
- for (bit_cntr = 7; bit_cntr >= 0; --bit_cntr) {
- data <<= 1;
- scl_out(dd, target, 1);
- data |= sda_in(dd, target, 0);
- scl_out(dd, target, 0);
- }
- if (last) {
- scl_out(dd, target, 1);
- stop_cmd(dd, target);
- } else {
- sda_out(dd, target, 0);
- scl_out(dd, target, 1);
- scl_out(dd, target, 0);
- sda_out(dd, target, 1);
- }
- return data;
-}
-
-/**
- * wr_byte - write a byte, one bit at a time
- * @dd: the hfi1_ib device
- * @data: the byte to write
- *
- * Returns 0 if we got the following ack, otherwise 1
- */
-static int wr_byte(struct hfi1_devdata *dd, u32 target, u8 data)
-{
- int bit_cntr;
- u8 bit;
-
- for (bit_cntr = 7; bit_cntr >= 0; bit_cntr--) {
- bit = (data >> bit_cntr) & 1;
- sda_out(dd, target, bit);
- scl_out(dd, target, 1);
- scl_out(dd, target, 0);
- }
- return (!i2c_ackrcv(dd, target)) ? 1 : 0;
-}
-
-/*
- * issue TWSI start sequence:
- * (both clock/data high, clock high, data low while clock is high)
- */
-static void start_seq(struct hfi1_devdata *dd, u32 target)
-{
- sda_out(dd, target, 1);
- scl_out(dd, target, 1);
- sda_out(dd, target, 0);
- udelay(1);
- scl_out(dd, target, 0);
-}
-
-/**
- * stop_seq - transmit the stop sequence
- * @dd: the hfi1_ib device
- *
- * (both clock/data low, clock high, data high while clock is high)
- */
-static void stop_seq(struct hfi1_devdata *dd, u32 target)
-{
- scl_out(dd, target, 0);
- sda_out(dd, target, 0);
- scl_out(dd, target, 1);
- sda_out(dd, target, 1);
-}
-
-/**
- * stop_cmd - transmit the stop condition
- * @dd: the hfi1_ib device
- *
- * (both clock/data low, clock high, data high while clock is high)
- */
-static void stop_cmd(struct hfi1_devdata *dd, u32 target)
-{
- stop_seq(dd, target);
- udelay(TWSI_BUF_WAIT_USEC);
-}
-
-/**
- * hfi1_twsi_reset - reset I2C communication
- * @dd: the hfi1_ib device
- * returns 0 if ok, -EIO on error
- */
-int hfi1_twsi_reset(struct hfi1_devdata *dd, u32 target)
-{
- int clock_cycles_left = 9;
- u32 mask;
-
- /* Both SCL and SDA should be high. If not, there
- * is something wrong.
- */
- mask = QSFP_HFI0_I2CCLK | QSFP_HFI0_I2CDAT;
-
- /*
- * Force pins to desired innocuous state.
- * This is the default power-on state with out=0 and dir=0,
- * So tri-stated and should be floating high (barring HW problems)
- */
- hfi1_gpio_mod(dd, target, 0, 0, mask);
-
- /* Check if SCL is low, if it is low then we have a slave device
- * misbehaving and there is not much we can do.
- */
- if (!scl_in(dd, target, 0))
- return -EIO;
-
- /* Check if SDA is low, if it is low then we have to clock SDA
- * up to 9 times for the device to release the bus
- */
- while (clock_cycles_left--) {
- if (sda_in(dd, target, 0))
- return 0;
- scl_out(dd, target, 0);
- scl_out(dd, target, 1);
- }
-
- return -EIO;
-}
-
-#define HFI1_TWSI_START 0x100
-#define HFI1_TWSI_STOP 0x200
-
-/* Write byte to TWSI, optionally prefixed with START or suffixed with
- * STOP.
- * returns 0 if OK (ACK received), else != 0
- */
-static int twsi_wr(struct hfi1_devdata *dd, u32 target, int data, int flags)
-{
- int ret = 1;
-
- if (flags & HFI1_TWSI_START)
- start_seq(dd, target);
-
- /* Leaves SCL low (from i2c_ackrcv()) */
- ret = wr_byte(dd, target, data);
-
- if (flags & HFI1_TWSI_STOP)
- stop_cmd(dd, target);
- return ret;
-}
-
-/* Added functionality for IBA7220-based cards */
-#define HFI1_TEMP_DEV 0x98
-
-/*
- * hfi1_twsi_blk_rd
- * General interface for data transfer from twsi devices.
- * One vestige of its former role is that it recognizes a device
- * HFI1_TWSI_NO_DEV and does the correct operation for the legacy part,
- * which responded to all TWSI device codes, interpreting them as
- * address within device. On all other devices found on board handled by
- * this driver, the device is followed by a N-byte "address" which selects
- * the "register" or "offset" within the device from which data should
- * be read.
- */
-int hfi1_twsi_blk_rd(struct hfi1_devdata *dd, u32 target, int dev, int addr,
- void *buffer, int len)
-{
- u8 *bp = buffer;
- int ret = 1;
- int i;
- int offset_size;
-
- /* obtain the offset size, strip it from the device address */
- offset_size = (dev >> 8) & 0xff;
- dev &= 0xff;
-
- /* allow at most a 2 byte offset */
- if (offset_size > 2)
- goto bail;
-
- if (dev == HFI1_TWSI_NO_DEV) {
- /* legacy not-really-I2C */
- addr = (addr << 1) | READ_CMD;
- ret = twsi_wr(dd, target, addr, HFI1_TWSI_START);
- } else {
- /* Actual I2C */
- if (offset_size) {
- ret = twsi_wr(dd, target,
- dev | WRITE_CMD, HFI1_TWSI_START);
- if (ret) {
- stop_cmd(dd, target);
- goto bail;
- }
-
- for (i = 0; i < offset_size; i++) {
- ret = twsi_wr(dd, target,
- (addr >> (i * 8)) & 0xff, 0);
- udelay(TWSI_BUF_WAIT_USEC);
- if (ret) {
- dd_dev_err(dd, "Failed to write byte %d of offset 0x%04X\n",
- i, addr);
- goto bail;
- }
- }
- }
- ret = twsi_wr(dd, target, dev | READ_CMD, HFI1_TWSI_START);
- }
- if (ret) {
- stop_cmd(dd, target);
- goto bail;
- }
-
- /*
- * block devices keeps clocking data out as long as we ack,
- * automatically incrementing the address. Some have "pages"
- * whose boundaries will not be crossed, but the handling
- * of these is left to the caller, who is in a better
- * position to know.
- */
- while (len-- > 0) {
- /*
- * Get and store data, sending ACK if length remaining,
- * else STOP
- */
- *bp++ = rd_byte(dd, target, !len);
- }
-
- ret = 0;
-
-bail:
- return ret;
-}
-
-/*
- * hfi1_twsi_blk_wr
- * General interface for data transfer to twsi devices.
- * One vestige of its former role is that it recognizes a device
- * HFI1_TWSI_NO_DEV and does the correct operation for the legacy part,
- * which responded to all TWSI device codes, interpreting them as
- * address within device. On all other devices found on board handled by
- * this driver, the device is followed by a N-byte "address" which selects
- * the "register" or "offset" within the device to which data should
- * be written.
- */
-int hfi1_twsi_blk_wr(struct hfi1_devdata *dd, u32 target, int dev, int addr,
- const void *buffer, int len)
-{
- const u8 *bp = buffer;
- int ret = 1;
- int i;
- int offset_size;
-
- /* obtain the offset size, strip it from the device address */
- offset_size = (dev >> 8) & 0xff;
- dev &= 0xff;
-
- /* allow at most a 2 byte offset */
- if (offset_size > 2)
- goto bail;
-
- if (dev == HFI1_TWSI_NO_DEV) {
- if (twsi_wr(dd, target, (addr << 1) | WRITE_CMD,
- HFI1_TWSI_START)) {
- goto failed_write;
- }
- } else {
- /* Real I2C */
- if (twsi_wr(dd, target, dev | WRITE_CMD, HFI1_TWSI_START))
- goto failed_write;
- }
-
- for (i = 0; i < offset_size; i++) {
- ret = twsi_wr(dd, target, (addr >> (i * 8)) & 0xff, 0);
- udelay(TWSI_BUF_WAIT_USEC);
- if (ret) {
- dd_dev_err(dd, "Failed to write byte %d of offset 0x%04X\n",
- i, addr);
- goto bail;
- }
- }
-
- for (i = 0; i < len; i++)
- if (twsi_wr(dd, target, *bp++, 0))
- goto failed_write;
-
- ret = 0;
-
-failed_write:
- stop_cmd(dd, target);
-
-bail:
- return ret;
-}
diff --git a/drivers/infiniband/hw/hfi1/twsi.h b/drivers/infiniband/hw/hfi1/twsi.h
deleted file mode 100644
index 5b8a5b5e7eae..000000000000
--- a/drivers/infiniband/hw/hfi1/twsi.h
+++ /dev/null
@@ -1,65 +0,0 @@
-#ifndef _TWSI_H
-#define _TWSI_H
-/*
- * Copyright(c) 2015, 2016 Intel Corporation.
- *
- * This file is provided under a dual BSD/GPLv2 license. When using or
- * redistributing this file, you may do so under either license.
- *
- * GPL LICENSE SUMMARY
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * BSD LICENSE
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * - Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * - Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * - Neither the name of Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
-
-#define HFI1_TWSI_NO_DEV 0xFF
-
-struct hfi1_devdata;
-
-/* Bit position of SDA/SCL pins in ASIC_QSFP* registers */
-#define GPIO_SDA_NUM 1
-#define GPIO_SCL_NUM 0
-
-/* these functions must be called with qsfp_lock held */
-int hfi1_twsi_reset(struct hfi1_devdata *dd, u32 target);
-int hfi1_twsi_blk_rd(struct hfi1_devdata *dd, u32 target, int dev, int addr,
- void *buffer, int len);
-int hfi1_twsi_blk_wr(struct hfi1_devdata *dd, u32 target, int dev, int addr,
- const void *buffer, int len);
-
-#endif /* _TWSI_H */
diff --git a/drivers/infiniband/hw/hfi1/uc.c b/drivers/infiniband/hw/hfi1/uc.c
index df773d433297..a726d96d185f 100644
--- a/drivers/infiniband/hw/hfi1/uc.c
+++ b/drivers/infiniband/hw/hfi1/uc.c
@@ -119,6 +119,31 @@ int hfi1_make_uc_req(struct rvt_qp *qp, struct hfi1_pkt_state *ps)
goto bail;
}
/*
+ * Local operations are processed immediately
+ * after all prior requests have completed.
+ */
+ if (wqe->wr.opcode == IB_WR_REG_MR ||
+ wqe->wr.opcode == IB_WR_LOCAL_INV) {
+ int local_ops = 0;
+ int err = 0;
+
+ if (qp->s_last != qp->s_cur)
+ goto bail;
+ if (++qp->s_cur == qp->s_size)
+ qp->s_cur = 0;
+ if (!(wqe->wr.send_flags & RVT_SEND_COMPLETION_ONLY)) {
+ err = rvt_invalidate_rkey(
+ qp, wqe->wr.ex.invalidate_rkey);
+ local_ops = 1;
+ }
+ hfi1_send_complete(qp, wqe, err ? IB_WC_LOC_PROT_ERR
+ : IB_WC_SUCCESS);
+ if (local_ops)
+ atomic_dec(&qp->local_ops_pending);
+ qp->s_hdrwords = 0;
+ goto done_free_tx;
+ }
+ /*
* Start a new request.
*/
qp->s_psn = wqe->psn;
@@ -294,46 +319,12 @@ void hfi1_uc_rcv(struct hfi1_packet *packet)
struct ib_reth *reth;
int has_grh = rcv_flags & HFI1_HAS_GRH;
int ret;
- u32 bth1;
bth0 = be32_to_cpu(ohdr->bth[0]);
if (hfi1_ruc_check_hdr(ibp, hdr, has_grh, qp, bth0))
return;
- bth1 = be32_to_cpu(ohdr->bth[1]);
- if (unlikely(bth1 & (HFI1_BECN_SMASK | HFI1_FECN_SMASK))) {
- if (bth1 & HFI1_BECN_SMASK) {
- struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
- u32 rqpn, lqpn;
- u16 rlid = be16_to_cpu(hdr->lrh[3]);
- u8 sl, sc5;
-
- lqpn = bth1 & RVT_QPN_MASK;
- rqpn = qp->remote_qpn;
-
- sc5 = ibp->sl_to_sc[qp->remote_ah_attr.sl];
- sl = ibp->sc_to_sl[sc5];
-
- process_becn(ppd, sl, rlid, lqpn, rqpn,
- IB_CC_SVCTYPE_UC);
- }
-
- if (bth1 & HFI1_FECN_SMASK) {
- struct ib_grh *grh = NULL;
- u16 pkey = (u16)be32_to_cpu(ohdr->bth[0]);
- u16 slid = be16_to_cpu(hdr->lrh[3]);
- u16 dlid = be16_to_cpu(hdr->lrh[1]);
- u32 src_qp = qp->remote_qpn;
- u8 sc5;
-
- sc5 = ibp->sl_to_sc[qp->remote_ah_attr.sl];
- if (has_grh)
- grh = &hdr->u.l.grh;
-
- return_cnp(ibp, qp, src_qp, pkey, dlid, slid, sc5,
- grh);
- }
- }
+ process_ecn(qp, packet, true);
psn = be32_to_cpu(ohdr->bth[2]);
opcode = (bth0 >> 24) & 0xff;
diff --git a/drivers/infiniband/hw/hfi1/ud.c b/drivers/infiniband/hw/hfi1/ud.c
index be91f6fa1c87..f01e8e1d62d3 100644
--- a/drivers/infiniband/hw/hfi1/ud.c
+++ b/drivers/infiniband/hw/hfi1/ud.c
@@ -184,8 +184,12 @@ static void ud_loopback(struct rvt_qp *sqp, struct rvt_swqe *swqe)
}
if (ah_attr->ah_flags & IB_AH_GRH) {
- hfi1_copy_sge(&qp->r_sge, &ah_attr->grh,
- sizeof(struct ib_grh), 1, 0);
+ struct ib_grh grh;
+ struct ib_global_route grd = ah_attr->grh;
+
+ hfi1_make_grh(ibp, &grh, &grd, 0, 0);
+ hfi1_copy_sge(&qp->r_sge, &grh,
+ sizeof(grh), 1, 0);
wc.wc_flags |= IB_WC_GRH;
} else {
hfi1_skip_sge(&qp->r_sge, sizeof(struct ib_grh), 1);
@@ -430,10 +434,9 @@ int hfi1_make_ud_req(struct rvt_qp *qp, struct hfi1_pkt_state *ps)
qp->qkey : wqe->ud_wr.remote_qkey);
ohdr->u.ud.deth[1] = cpu_to_be32(qp->ibqp.qp_num);
/* disarm any ahg */
- priv->s_hdr->ahgcount = 0;
- priv->s_hdr->ahgidx = 0;
- priv->s_hdr->tx_flags = 0;
- priv->s_hdr->sde = NULL;
+ priv->s_ahg->ahgcount = 0;
+ priv->s_ahg->ahgidx = 0;
+ priv->s_ahg->tx_flags = 0;
/* pbc */
ps->s_txreq->hdr_dwords = qp->s_hdrwords + 2;
@@ -665,13 +668,13 @@ void hfi1_ud_rcv(struct hfi1_packet *packet)
struct hfi1_other_headers *ohdr = packet->ohdr;
int opcode;
u32 hdrsize = packet->hlen;
- u32 pad;
struct ib_wc wc;
u32 qkey;
u32 src_qp;
u16 dlid, pkey;
int mgmt_pkey_idx = -1;
struct hfi1_ibport *ibp = &packet->rcd->ppd->ibport_data;
+ struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
struct hfi1_ib_header *hdr = packet->hdr;
u32 rcv_flags = packet->rcv_flags;
void *data = packet->ebuf;
@@ -680,52 +683,33 @@ void hfi1_ud_rcv(struct hfi1_packet *packet)
bool has_grh = rcv_flags & HFI1_HAS_GRH;
u8 sc5 = hdr2sc((struct hfi1_message_header *)hdr, packet->rhf);
u32 bth1;
- int is_mcast;
- struct ib_grh *grh = NULL;
+ u8 sl_from_sc, sl;
+ u16 slid;
+ u8 extra_bytes;
qkey = be32_to_cpu(ohdr->u.ud.deth[0]);
src_qp = be32_to_cpu(ohdr->u.ud.deth[1]) & RVT_QPN_MASK;
dlid = be16_to_cpu(hdr->lrh[1]);
- is_mcast = (dlid > be16_to_cpu(IB_MULTICAST_LID_BASE)) &&
- (dlid != be16_to_cpu(IB_LID_PERMISSIVE));
bth1 = be32_to_cpu(ohdr->bth[1]);
- if (unlikely(bth1 & HFI1_BECN_SMASK)) {
- /*
- * In pre-B0 h/w the CNP_OPCODE is handled via an
- * error path.
- */
- struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
- u32 lqpn = be32_to_cpu(ohdr->bth[1]) & RVT_QPN_MASK;
- u8 sl;
-
- sl = ibp->sc_to_sl[sc5];
-
- process_becn(ppd, sl, 0, lqpn, 0, IB_CC_SVCTYPE_UD);
- }
+ slid = be16_to_cpu(hdr->lrh[3]);
+ pkey = (u16)be32_to_cpu(ohdr->bth[0]);
+ sl = (be16_to_cpu(hdr->lrh[0]) >> 4) & 0xf;
+ extra_bytes = (be32_to_cpu(ohdr->bth[0]) >> 20) & 3;
+ extra_bytes += (SIZE_OF_CRC << 2);
+ sl_from_sc = ibp->sc_to_sl[sc5];
- /*
- * The opcode is in the low byte when its in network order
- * (top byte when in host order).
- */
opcode = be32_to_cpu(ohdr->bth[0]) >> 24;
opcode &= 0xff;
- pkey = (u16)be32_to_cpu(ohdr->bth[0]);
-
- if (!is_mcast && (opcode != IB_OPCODE_CNP) && bth1 & HFI1_FECN_SMASK) {
- u16 slid = be16_to_cpu(hdr->lrh[3]);
-
- return_cnp(ibp, qp, src_qp, pkey, dlid, slid, sc5, grh);
- }
+ process_ecn(qp, packet, (opcode != IB_OPCODE_CNP));
/*
* Get the number of bytes the message was padded by
* and drop incomplete packets.
*/
- pad = (be32_to_cpu(ohdr->bth[0]) >> 20) & 3;
- if (unlikely(tlen < (hdrsize + pad + 4)))
+ if (unlikely(tlen < (hdrsize + extra_bytes)))
goto drop;
- tlen -= hdrsize + pad + 4;
+ tlen -= hdrsize + extra_bytes;
/*
* Check that the permissive LID is only used on QP0
@@ -736,10 +720,6 @@ void hfi1_ud_rcv(struct hfi1_packet *packet)
hdr->lrh[3] == IB_LID_PERMISSIVE))
goto drop;
if (qp->ibqp.qp_num > 1) {
- struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
- u16 slid;
-
- slid = be16_to_cpu(hdr->lrh[3]);
if (unlikely(rcv_pkey_check(ppd, pkey, sc5, slid))) {
/*
* Traps will not be sent for packets dropped
@@ -748,12 +728,9 @@ void hfi1_ud_rcv(struct hfi1_packet *packet)
* IB spec (release 1.3, section 10.9.4)
*/
hfi1_bad_pqkey(ibp, OPA_TRAP_BAD_P_KEY,
- pkey,
- (be16_to_cpu(hdr->lrh[0]) >> 4) &
- 0xF,
+ pkey, sl,
src_qp, qp->ibqp.qp_num,
- be16_to_cpu(hdr->lrh[3]),
- be16_to_cpu(hdr->lrh[1]));
+ slid, dlid);
return;
}
} else {
@@ -763,22 +740,18 @@ void hfi1_ud_rcv(struct hfi1_packet *packet)
goto drop;
}
if (unlikely(qkey != qp->qkey)) {
- hfi1_bad_pqkey(ibp, OPA_TRAP_BAD_Q_KEY, qkey,
- (be16_to_cpu(hdr->lrh[0]) >> 4) & 0xF,
+ hfi1_bad_pqkey(ibp, OPA_TRAP_BAD_Q_KEY, qkey, sl,
src_qp, qp->ibqp.qp_num,
- be16_to_cpu(hdr->lrh[3]),
- be16_to_cpu(hdr->lrh[1]));
+ slid, dlid);
return;
}
/* Drop invalid MAD packets (see 13.5.3.1). */
if (unlikely(qp->ibqp.qp_num == 1 &&
- (tlen > 2048 ||
- (be16_to_cpu(hdr->lrh[0]) >> 12) == 15)))
+ (tlen > 2048 || (sc5 == 0xF))))
goto drop;
} else {
/* Received on QP0, and so by definition, this is an SMP */
struct opa_smp *smp = (struct opa_smp *)data;
- u16 slid = be16_to_cpu(hdr->lrh[3]);
if (opa_smp_check(ibp, pkey, sc5, qp, slid, smp))
goto drop;
@@ -861,7 +834,6 @@ void hfi1_ud_rcv(struct hfi1_packet *packet)
qp->ibqp.qp_type == IB_QPT_SMI) {
if (mgmt_pkey_idx < 0) {
if (net_ratelimit()) {
- struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
struct hfi1_devdata *dd = ppd->dd;
dd_dev_err(dd, "QP type %d mgmt_pkey_idx < 0 and packet not dropped???\n",
@@ -874,8 +846,8 @@ void hfi1_ud_rcv(struct hfi1_packet *packet)
wc.pkey_index = 0;
}
- wc.slid = be16_to_cpu(hdr->lrh[3]);
- wc.sl = ibp->sc_to_sl[sc5];
+ wc.slid = slid;
+ wc.sl = sl_from_sc;
/*
* Save the LMC lower bits if the destination LID is a unicast LID.
diff --git a/drivers/infiniband/hw/hfi1/user_exp_rcv.c b/drivers/infiniband/hw/hfi1/user_exp_rcv.c
index 1b640a35b3fe..64d26525435a 100644
--- a/drivers/infiniband/hw/hfi1/user_exp_rcv.c
+++ b/drivers/infiniband/hw/hfi1/user_exp_rcv.c
@@ -82,24 +82,25 @@ struct tid_pageset {
((unsigned long)vaddr & PAGE_MASK)) >> PAGE_SHIFT))
static void unlock_exp_tids(struct hfi1_ctxtdata *, struct exp_tid_set *,
- struct rb_root *);
+ struct hfi1_filedata *);
static u32 find_phys_blocks(struct page **, unsigned, struct tid_pageset *);
static int set_rcvarray_entry(struct file *, unsigned long, u32,
struct tid_group *, struct page **, unsigned);
-static int mmu_rb_insert(struct rb_root *, struct mmu_rb_node *);
-static void mmu_rb_remove(struct rb_root *, struct mmu_rb_node *,
- struct mm_struct *);
-static int mmu_rb_invalidate(struct rb_root *, struct mmu_rb_node *);
+static int tid_rb_insert(void *, struct mmu_rb_node *);
+static void cacheless_tid_rb_remove(struct hfi1_filedata *fdata,
+ struct tid_rb_node *tnode);
+static void tid_rb_remove(void *, struct mmu_rb_node *);
+static int tid_rb_invalidate(void *, struct mmu_rb_node *);
static int program_rcvarray(struct file *, unsigned long, struct tid_group *,
struct tid_pageset *, unsigned, u16, struct page **,
u32 *, unsigned *, unsigned *);
static int unprogram_rcvarray(struct file *, u32, struct tid_group **);
-static void clear_tid_node(struct hfi1_filedata *, u16, struct tid_rb_node *);
+static void clear_tid_node(struct hfi1_filedata *fd, struct tid_rb_node *node);
static struct mmu_rb_ops tid_rb_ops = {
- .insert = mmu_rb_insert,
- .remove = mmu_rb_remove,
- .invalidate = mmu_rb_invalidate
+ .insert = tid_rb_insert,
+ .remove = tid_rb_remove,
+ .invalidate = tid_rb_invalidate
};
static inline u32 rcventry2tidinfo(u32 rcventry)
@@ -162,7 +163,6 @@ int hfi1_user_exp_rcv_init(struct file *fp)
spin_lock_init(&fd->tid_lock);
spin_lock_init(&fd->invalid_lock);
- fd->tid_rb_root = RB_ROOT;
if (!uctxt->subctxt_cnt || !fd->subctxt) {
exp_tid_group_init(&uctxt->tid_group_list);
@@ -197,7 +197,7 @@ int hfi1_user_exp_rcv_init(struct file *fp)
if (!fd->entry_to_rb)
return -ENOMEM;
- if (!HFI1_CAP_IS_USET(TID_UNMAP)) {
+ if (!HFI1_CAP_UGET_MASK(uctxt->flags, TID_UNMAP)) {
fd->invalid_tid_idx = 0;
fd->invalid_tids = kzalloc(uctxt->expected_count *
sizeof(u32), GFP_KERNEL);
@@ -208,15 +208,15 @@ int hfi1_user_exp_rcv_init(struct file *fp)
/*
* Register MMU notifier callbacks. If the registration
- * fails, continue but turn off the TID caching for
- * all user contexts.
+ * fails, continue without TID caching for this context.
*/
- ret = hfi1_mmu_rb_register(&fd->tid_rb_root, &tid_rb_ops);
+ ret = hfi1_mmu_rb_register(fd, fd->mm, &tid_rb_ops,
+ dd->pport->hfi1_wq,
+ &fd->handler);
if (ret) {
dd_dev_info(dd,
"Failed MMU notifier registration %d\n",
ret);
- HFI1_CAP_USET(TID_UNMAP);
ret = 0;
}
}
@@ -235,7 +235,7 @@ int hfi1_user_exp_rcv_init(struct file *fp)
* init.
*/
spin_lock(&fd->tid_lock);
- if (uctxt->subctxt_cnt && !HFI1_CAP_IS_USET(TID_UNMAP)) {
+ if (uctxt->subctxt_cnt && fd->handler) {
u16 remainder;
fd->tid_limit = uctxt->expected_count / uctxt->subctxt_cnt;
@@ -261,18 +261,16 @@ int hfi1_user_exp_rcv_free(struct hfi1_filedata *fd)
* The notifier would have been removed when the process'es mm
* was freed.
*/
- if (!HFI1_CAP_IS_USET(TID_UNMAP))
- hfi1_mmu_rb_unregister(&fd->tid_rb_root);
+ if (fd->handler)
+ hfi1_mmu_rb_unregister(fd->handler);
kfree(fd->invalid_tids);
if (!uctxt->cnt) {
if (!EXP_TID_SET_EMPTY(uctxt->tid_full_list))
- unlock_exp_tids(uctxt, &uctxt->tid_full_list,
- &fd->tid_rb_root);
+ unlock_exp_tids(uctxt, &uctxt->tid_full_list, fd);
if (!EXP_TID_SET_EMPTY(uctxt->tid_used_list))
- unlock_exp_tids(uctxt, &uctxt->tid_used_list,
- &fd->tid_rb_root);
+ unlock_exp_tids(uctxt, &uctxt->tid_used_list, fd);
list_for_each_entry_safe(grp, gptr, &uctxt->tid_group_list.list,
list) {
list_del_init(&grp->list);
@@ -399,12 +397,12 @@ int hfi1_user_exp_rcv_setup(struct file *fp, struct hfi1_tid_info *tinfo)
* pages, accept the amount pinned so far and program only that.
* User space knows how to deal with partially programmed buffers.
*/
- if (!hfi1_can_pin_pages(dd, fd->tid_n_pinned, npages)) {
+ if (!hfi1_can_pin_pages(dd, fd->mm, fd->tid_n_pinned, npages)) {
ret = -ENOMEM;
goto bail;
}
- pinned = hfi1_acquire_user_pages(vaddr, npages, true, pages);
+ pinned = hfi1_acquire_user_pages(fd->mm, vaddr, npages, true, pages);
if (pinned <= 0) {
ret = pinned;
goto bail;
@@ -559,7 +557,7 @@ nomem:
* for example), unpin all unmapped pages so we can pin them nex time.
*/
if (mapped_pages != pinned) {
- hfi1_release_user_pages(current->mm, &pages[mapped_pages],
+ hfi1_release_user_pages(fd->mm, &pages[mapped_pages],
pinned - mapped_pages,
false);
fd->tid_n_pinned -= pinned - mapped_pages;
@@ -829,7 +827,6 @@ static int set_rcvarray_entry(struct file *fp, unsigned long vaddr,
struct hfi1_ctxtdata *uctxt = fd->uctxt;
struct tid_rb_node *node;
struct hfi1_devdata *dd = uctxt->dd;
- struct rb_root *root = &fd->tid_rb_root;
dma_addr_t phys;
/*
@@ -861,10 +858,10 @@ static int set_rcvarray_entry(struct file *fp, unsigned long vaddr,
node->freed = false;
memcpy(node->pages, pages, sizeof(struct page *) * npages);
- if (HFI1_CAP_IS_USET(TID_UNMAP))
- ret = mmu_rb_insert(root, &node->mmu);
+ if (!fd->handler)
+ ret = tid_rb_insert(fd, &node->mmu);
else
- ret = hfi1_mmu_rb_insert(root, &node->mmu);
+ ret = hfi1_mmu_rb_insert(fd->handler, &node->mmu);
if (ret) {
hfi1_cdbg(TID, "Failed to insert RB node %u 0x%lx, 0x%lx %d",
@@ -904,19 +901,19 @@ static int unprogram_rcvarray(struct file *fp, u32 tidinfo,
node = fd->entry_to_rb[rcventry];
if (!node || node->rcventry != (uctxt->expected_base + rcventry))
return -EBADF;
- if (HFI1_CAP_IS_USET(TID_UNMAP))
- mmu_rb_remove(&fd->tid_rb_root, &node->mmu, NULL);
- else
- hfi1_mmu_rb_remove(&fd->tid_rb_root, &node->mmu);
if (grp)
*grp = node->grp;
- clear_tid_node(fd, fd->subctxt, node);
+
+ if (!fd->handler)
+ cacheless_tid_rb_remove(fd, node);
+ else
+ hfi1_mmu_rb_remove(fd->handler, &node->mmu);
+
return 0;
}
-static void clear_tid_node(struct hfi1_filedata *fd, u16 subctxt,
- struct tid_rb_node *node)
+static void clear_tid_node(struct hfi1_filedata *fd, struct tid_rb_node *node)
{
struct hfi1_ctxtdata *uctxt = fd->uctxt;
struct hfi1_devdata *dd = uctxt->dd;
@@ -934,7 +931,7 @@ static void clear_tid_node(struct hfi1_filedata *fd, u16 subctxt,
pci_unmap_single(dd->pcidev, node->dma_addr, node->mmu.len,
PCI_DMA_FROMDEVICE);
- hfi1_release_user_pages(current->mm, node->pages, node->npages, true);
+ hfi1_release_user_pages(fd->mm, node->pages, node->npages, true);
fd->tid_n_pinned -= node->npages;
node->grp->used--;
@@ -949,12 +946,15 @@ static void clear_tid_node(struct hfi1_filedata *fd, u16 subctxt,
kfree(node);
}
+/*
+ * As a simple helper for hfi1_user_exp_rcv_free, this function deals with
+ * clearing nodes in the non-cached case.
+ */
static void unlock_exp_tids(struct hfi1_ctxtdata *uctxt,
- struct exp_tid_set *set, struct rb_root *root)
+ struct exp_tid_set *set,
+ struct hfi1_filedata *fd)
{
struct tid_group *grp, *ptr;
- struct hfi1_filedata *fd = container_of(root, struct hfi1_filedata,
- tid_rb_root);
int i;
list_for_each_entry_safe(grp, ptr, &set->list, list) {
@@ -969,22 +969,23 @@ static void unlock_exp_tids(struct hfi1_ctxtdata *uctxt,
uctxt->expected_base];
if (!node || node->rcventry != rcventry)
continue;
- if (HFI1_CAP_IS_USET(TID_UNMAP))
- mmu_rb_remove(&fd->tid_rb_root,
- &node->mmu, NULL);
- else
- hfi1_mmu_rb_remove(&fd->tid_rb_root,
- &node->mmu);
- clear_tid_node(fd, -1, node);
+
+ cacheless_tid_rb_remove(fd, node);
}
}
}
}
-static int mmu_rb_invalidate(struct rb_root *root, struct mmu_rb_node *mnode)
+/*
+ * Always return 0 from this function. A non-zero return indicates that the
+ * remove operation will be called and that memory should be unpinned.
+ * However, the driver cannot unpin out from under PSM. Instead, retain the
+ * memory (by returning 0) and inform PSM that the memory is going away. PSM
+ * will call back later when it has removed the memory from its list.
+ */
+static int tid_rb_invalidate(void *arg, struct mmu_rb_node *mnode)
{
- struct hfi1_filedata *fdata =
- container_of(root, struct hfi1_filedata, tid_rb_root);
+ struct hfi1_filedata *fdata = arg;
struct hfi1_ctxtdata *uctxt = fdata->uctxt;
struct tid_rb_node *node =
container_of(mnode, struct tid_rb_node, mmu);
@@ -1025,10 +1026,9 @@ static int mmu_rb_invalidate(struct rb_root *root, struct mmu_rb_node *mnode)
return 0;
}
-static int mmu_rb_insert(struct rb_root *root, struct mmu_rb_node *node)
+static int tid_rb_insert(void *arg, struct mmu_rb_node *node)
{
- struct hfi1_filedata *fdata =
- container_of(root, struct hfi1_filedata, tid_rb_root);
+ struct hfi1_filedata *fdata = arg;
struct tid_rb_node *tnode =
container_of(node, struct tid_rb_node, mmu);
u32 base = fdata->uctxt->expected_base;
@@ -1037,14 +1037,20 @@ static int mmu_rb_insert(struct rb_root *root, struct mmu_rb_node *node)
return 0;
}
-static void mmu_rb_remove(struct rb_root *root, struct mmu_rb_node *node,
- struct mm_struct *mm)
+static void cacheless_tid_rb_remove(struct hfi1_filedata *fdata,
+ struct tid_rb_node *tnode)
{
- struct hfi1_filedata *fdata =
- container_of(root, struct hfi1_filedata, tid_rb_root);
- struct tid_rb_node *tnode =
- container_of(node, struct tid_rb_node, mmu);
u32 base = fdata->uctxt->expected_base;
fdata->entry_to_rb[tnode->rcventry - base] = NULL;
+ clear_tid_node(fdata, tnode);
+}
+
+static void tid_rb_remove(void *arg, struct mmu_rb_node *node)
+{
+ struct hfi1_filedata *fdata = arg;
+ struct tid_rb_node *tnode =
+ container_of(node, struct tid_rb_node, mmu);
+
+ cacheless_tid_rb_remove(fdata, tnode);
}
diff --git a/drivers/infiniband/hw/hfi1/user_pages.c b/drivers/infiniband/hw/hfi1/user_pages.c
index 88e10b5f55f1..20f4ddcac3b0 100644
--- a/drivers/infiniband/hw/hfi1/user_pages.c
+++ b/drivers/infiniband/hw/hfi1/user_pages.c
@@ -68,7 +68,8 @@ MODULE_PARM_DESC(cache_size, "Send and receive side cache size limit (in MB)");
* could keeping caching buffers.
*
*/
-bool hfi1_can_pin_pages(struct hfi1_devdata *dd, u32 nlocked, u32 npages)
+bool hfi1_can_pin_pages(struct hfi1_devdata *dd, struct mm_struct *mm,
+ u32 nlocked, u32 npages)
{
unsigned long ulimit = rlimit(RLIMIT_MEMLOCK), pinned, cache_limit,
size = (cache_size * (1UL << 20)); /* convert to bytes */
@@ -89,9 +90,9 @@ bool hfi1_can_pin_pages(struct hfi1_devdata *dd, u32 nlocked, u32 npages)
/* Convert to number of pages */
size = DIV_ROUND_UP(size, PAGE_SIZE);
- down_read(&current->mm->mmap_sem);
- pinned = current->mm->pinned_vm;
- up_read(&current->mm->mmap_sem);
+ down_read(&mm->mmap_sem);
+ pinned = mm->pinned_vm;
+ up_read(&mm->mmap_sem);
/* First, check the absolute limit against all pinned pages. */
if (pinned + npages >= ulimit && !can_lock)
@@ -100,8 +101,8 @@ bool hfi1_can_pin_pages(struct hfi1_devdata *dd, u32 nlocked, u32 npages)
return ((nlocked + npages) <= size) || can_lock;
}
-int hfi1_acquire_user_pages(unsigned long vaddr, size_t npages, bool writable,
- struct page **pages)
+int hfi1_acquire_user_pages(struct mm_struct *mm, unsigned long vaddr, size_t npages,
+ bool writable, struct page **pages)
{
int ret;
@@ -109,9 +110,9 @@ int hfi1_acquire_user_pages(unsigned long vaddr, size_t npages, bool writable,
if (ret < 0)
return ret;
- down_write(&current->mm->mmap_sem);
- current->mm->pinned_vm += ret;
- up_write(&current->mm->mmap_sem);
+ down_write(&mm->mmap_sem);
+ mm->pinned_vm += ret;
+ up_write(&mm->mmap_sem);
return ret;
}
diff --git a/drivers/infiniband/hw/hfi1/user_sdma.c b/drivers/infiniband/hw/hfi1/user_sdma.c
index 47ffd273ecbd..0ecf27903dc2 100644
--- a/drivers/infiniband/hw/hfi1/user_sdma.c
+++ b/drivers/infiniband/hw/hfi1/user_sdma.c
@@ -145,7 +145,7 @@ MODULE_PARM_DESC(sdma_comp_size, "Size of User SDMA completion ring. Default: 12
/* Last packet in the request */
#define TXREQ_FLAGS_REQ_LAST_PKT BIT(0)
-#define SDMA_REQ_IN_USE 0
+/* SDMA request flag bits */
#define SDMA_REQ_FOR_THREAD 1
#define SDMA_REQ_SEND_DONE 2
#define SDMA_REQ_HAVE_AHG 3
@@ -183,16 +183,18 @@ struct user_sdma_iovec {
struct sdma_mmu_node *node;
};
-#define SDMA_CACHE_NODE_EVICT 0
-
struct sdma_mmu_node {
struct mmu_rb_node rb;
- struct list_head list;
struct hfi1_user_sdma_pkt_q *pq;
atomic_t refcount;
struct page **pages;
unsigned npages;
- unsigned long flags;
+};
+
+/* evict operation argument */
+struct evict_data {
+ u32 cleared; /* count evicted so far */
+ u32 target; /* target count to evict */
};
struct user_sdma_request {
@@ -305,14 +307,16 @@ static int defer_packet_queue(
unsigned seq);
static void activate_packet_queue(struct iowait *, int);
static bool sdma_rb_filter(struct mmu_rb_node *, unsigned long, unsigned long);
-static int sdma_rb_insert(struct rb_root *, struct mmu_rb_node *);
-static void sdma_rb_remove(struct rb_root *, struct mmu_rb_node *,
- struct mm_struct *);
-static int sdma_rb_invalidate(struct rb_root *, struct mmu_rb_node *);
+static int sdma_rb_insert(void *, struct mmu_rb_node *);
+static int sdma_rb_evict(void *arg, struct mmu_rb_node *mnode,
+ void *arg2, bool *stop);
+static void sdma_rb_remove(void *, struct mmu_rb_node *);
+static int sdma_rb_invalidate(void *, struct mmu_rb_node *);
static struct mmu_rb_ops sdma_rb_ops = {
.filter = sdma_rb_filter,
.insert = sdma_rb_insert,
+ .evict = sdma_rb_evict,
.remove = sdma_rb_remove,
.invalidate = sdma_rb_invalidate
};
@@ -397,6 +401,11 @@ int hfi1_user_sdma_alloc_queues(struct hfi1_ctxtdata *uctxt, struct file *fp)
if (!pq->reqs)
goto pq_reqs_nomem;
+ memsize = BITS_TO_LONGS(hfi1_sdma_comp_ring_size) * sizeof(long);
+ pq->req_in_use = kzalloc(memsize, GFP_KERNEL);
+ if (!pq->req_in_use)
+ goto pq_reqs_no_in_use;
+
INIT_LIST_HEAD(&pq->list);
pq->dd = dd;
pq->ctxt = uctxt->ctxt;
@@ -405,9 +414,8 @@ int hfi1_user_sdma_alloc_queues(struct hfi1_ctxtdata *uctxt, struct file *fp)
pq->state = SDMA_PKT_Q_INACTIVE;
atomic_set(&pq->n_reqs, 0);
init_waitqueue_head(&pq->wait);
- pq->sdma_rb_root = RB_ROOT;
- INIT_LIST_HEAD(&pq->evict);
- spin_lock_init(&pq->evict_lock);
+ atomic_set(&pq->n_locked, 0);
+ pq->mm = fd->mm;
iowait_init(&pq->busy, 0, NULL, defer_packet_queue,
activate_packet_queue, NULL);
@@ -437,7 +445,8 @@ int hfi1_user_sdma_alloc_queues(struct hfi1_ctxtdata *uctxt, struct file *fp)
cq->nentries = hfi1_sdma_comp_ring_size;
fd->cq = cq;
- ret = hfi1_mmu_rb_register(&pq->sdma_rb_root, &sdma_rb_ops);
+ ret = hfi1_mmu_rb_register(pq, pq->mm, &sdma_rb_ops, dd->pport->hfi1_wq,
+ &pq->handler);
if (ret) {
dd_dev_err(dd, "Failed to register with MMU %d", ret);
goto done;
@@ -453,6 +462,8 @@ cq_comps_nomem:
cq_nomem:
kmem_cache_destroy(pq->txreq_cache);
pq_txreq_nomem:
+ kfree(pq->req_in_use);
+pq_reqs_no_in_use:
kfree(pq->reqs);
pq_reqs_nomem:
kfree(pq);
@@ -472,8 +483,9 @@ int hfi1_user_sdma_free_queues(struct hfi1_filedata *fd)
hfi1_cdbg(SDMA, "[%u:%u:%u] Freeing user SDMA queues", uctxt->dd->unit,
uctxt->ctxt, fd->subctxt);
pq = fd->pq;
- hfi1_mmu_rb_unregister(&pq->sdma_rb_root);
if (pq) {
+ if (pq->handler)
+ hfi1_mmu_rb_unregister(pq->handler);
spin_lock_irqsave(&uctxt->sdma_qlock, flags);
if (!list_empty(&pq->list))
list_del_init(&pq->list);
@@ -484,6 +496,7 @@ int hfi1_user_sdma_free_queues(struct hfi1_filedata *fd)
pq->wait,
(ACCESS_ONCE(pq->state) == SDMA_PKT_Q_INACTIVE));
kfree(pq->reqs);
+ kfree(pq->req_in_use);
kmem_cache_destroy(pq->txreq_cache);
kfree(pq);
fd->pq = NULL;
@@ -496,10 +509,31 @@ int hfi1_user_sdma_free_queues(struct hfi1_filedata *fd)
return 0;
}
+static u8 dlid_to_selector(u16 dlid)
+{
+ static u8 mapping[256];
+ static int initialized;
+ static u8 next;
+ int hash;
+
+ if (!initialized) {
+ memset(mapping, 0xFF, 256);
+ initialized = 1;
+ }
+
+ hash = ((dlid >> 8) ^ dlid) & 0xFF;
+ if (mapping[hash] == 0xFF) {
+ mapping[hash] = next;
+ next = (next + 1) & 0x7F;
+ }
+
+ return mapping[hash];
+}
+
int hfi1_user_sdma_process_request(struct file *fp, struct iovec *iovec,
unsigned long dim, unsigned long *count)
{
- int ret = 0, i = 0;
+ int ret = 0, i;
struct hfi1_filedata *fd = fp->private_data;
struct hfi1_ctxtdata *uctxt = fd->uctxt;
struct hfi1_user_sdma_pkt_q *pq = fd->pq;
@@ -511,6 +545,8 @@ int hfi1_user_sdma_process_request(struct file *fp, struct iovec *iovec,
struct user_sdma_request *req;
u8 opcode, sc, vl;
int req_queued = 0;
+ u16 dlid;
+ u8 selector;
if (iovec[idx].iov_len < sizeof(info) + sizeof(req->hdr)) {
hfi1_cdbg(
@@ -529,30 +565,48 @@ int hfi1_user_sdma_process_request(struct file *fp, struct iovec *iovec,
trace_hfi1_sdma_user_reqinfo(dd, uctxt->ctxt, fd->subctxt,
(u16 *)&info);
- if (cq->comps[info.comp_idx].status == QUEUED ||
- test_bit(SDMA_REQ_IN_USE, &pq->reqs[info.comp_idx].flags)) {
- hfi1_cdbg(SDMA, "[%u:%u:%u] Entry %u is in QUEUED state",
- dd->unit, uctxt->ctxt, fd->subctxt,
- info.comp_idx);
- return -EBADSLT;
+
+ if (info.comp_idx >= hfi1_sdma_comp_ring_size) {
+ hfi1_cdbg(SDMA,
+ "[%u:%u:%u:%u] Invalid comp index",
+ dd->unit, uctxt->ctxt, fd->subctxt, info.comp_idx);
+ return -EINVAL;
}
+
+ /*
+ * Sanity check the header io vector count. Need at least 1 vector
+ * (header) and cannot be larger than the actual io vector count.
+ */
+ if (req_iovcnt(info.ctrl) < 1 || req_iovcnt(info.ctrl) > dim) {
+ hfi1_cdbg(SDMA,
+ "[%u:%u:%u:%u] Invalid iov count %d, dim %ld",
+ dd->unit, uctxt->ctxt, fd->subctxt, info.comp_idx,
+ req_iovcnt(info.ctrl), dim);
+ return -EINVAL;
+ }
+
if (!info.fragsize) {
hfi1_cdbg(SDMA,
"[%u:%u:%u:%u] Request does not specify fragsize",
dd->unit, uctxt->ctxt, fd->subctxt, info.comp_idx);
return -EINVAL;
}
+
+ /* Try to claim the request. */
+ if (test_and_set_bit(info.comp_idx, pq->req_in_use)) {
+ hfi1_cdbg(SDMA, "[%u:%u:%u] Entry %u is in use",
+ dd->unit, uctxt->ctxt, fd->subctxt,
+ info.comp_idx);
+ return -EBADSLT;
+ }
/*
- * We've done all the safety checks that we can up to this point,
- * "allocate" the request entry.
+ * All safety checks have been done and this request has been claimed.
*/
hfi1_cdbg(SDMA, "[%u:%u:%u] Using req/comp entry %u\n", dd->unit,
uctxt->ctxt, fd->subctxt, info.comp_idx);
req = pq->reqs + info.comp_idx;
memset(req, 0, sizeof(*req));
- /* Mark the request as IN_USE before we start filling it in. */
- set_bit(SDMA_REQ_IN_USE, &req->flags);
- req->data_iovs = req_iovcnt(info.ctrl) - 1;
+ req->data_iovs = req_iovcnt(info.ctrl) - 1; /* subtract header vector */
req->pq = pq;
req->cq = cq;
req->status = -1;
@@ -560,13 +614,22 @@ int hfi1_user_sdma_process_request(struct file *fp, struct iovec *iovec,
memcpy(&req->info, &info, sizeof(info));
- if (req_opcode(info.ctrl) == EXPECTED)
+ if (req_opcode(info.ctrl) == EXPECTED) {
+ /* expected must have a TID info and at least one data vector */
+ if (req->data_iovs < 2) {
+ SDMA_DBG(req,
+ "Not enough vectors for expected request");
+ ret = -EINVAL;
+ goto free_req;
+ }
req->data_iovs--;
+ }
if (!info.npkts || req->data_iovs > MAX_VECTORS_PER_REQ) {
SDMA_DBG(req, "Too many vectors (%u/%u)", req->data_iovs,
MAX_VECTORS_PER_REQ);
- return -EINVAL;
+ ret = -EINVAL;
+ goto free_req;
}
/* Copy the header from the user buffer */
ret = copy_from_user(&req->hdr, iovec[idx].iov_base + sizeof(info),
@@ -634,7 +697,7 @@ int hfi1_user_sdma_process_request(struct file *fp, struct iovec *iovec,
idx++;
/* Save all the IO vector structures */
- while (i < req->data_iovs) {
+ for (i = 0; i < req->data_iovs; i++) {
INIT_LIST_HEAD(&req->iovs[i].list);
memcpy(&req->iovs[i].iov, iovec + idx++, sizeof(struct iovec));
ret = pin_vector_pages(req, &req->iovs[i]);
@@ -642,7 +705,7 @@ int hfi1_user_sdma_process_request(struct file *fp, struct iovec *iovec,
req->status = ret;
goto free_req;
}
- req->data_len += req->iovs[i++].iov.iov_len;
+ req->data_len += req->iovs[i].iov.iov_len;
}
SDMA_DBG(req, "total data length %u", req->data_len);
@@ -686,9 +749,13 @@ int hfi1_user_sdma_process_request(struct file *fp, struct iovec *iovec,
idx++;
}
+ dlid = be16_to_cpu(req->hdr.lrh[1]);
+ selector = dlid_to_selector(dlid);
+
/* Have to select the engine */
req->sde = sdma_select_engine_vl(dd,
- (u32)(uctxt->ctxt + fd->subctxt),
+ (u32)(uctxt->ctxt + fd->subctxt +
+ selector),
vl);
if (!req->sde || !sdma_running(req->sde)) {
ret = -ECOMM;
@@ -766,14 +833,21 @@ static inline u32 compute_data_length(struct user_sdma_request *req,
* The size of the data of the first packet is in the header
* template. However, it includes the header and ICRC, which need
* to be subtracted.
+ * The minimum representable packet data length in a header is 4 bytes,
+ * therefore, when the data length request is less than 4 bytes, there's
+ * only one packet, and the packet data length is equal to that of the
+ * request data length.
* The size of the remaining packets is the minimum of the frag
* size (MTU) or remaining data in the request.
*/
u32 len;
if (!req->seqnum) {
- len = ((be16_to_cpu(req->hdr.lrh[2]) << 2) -
- (sizeof(tx->hdr) - 4));
+ if (req->data_len < sizeof(u32))
+ len = req->data_len;
+ else
+ len = ((be16_to_cpu(req->hdr.lrh[2]) << 2) -
+ (sizeof(tx->hdr) - 4));
} else if (req_opcode(req->info.ctrl) == EXPECTED) {
u32 tidlen = EXP_TID_GET(req->tids[req->tididx], LEN) *
PAGE_SIZE;
@@ -803,6 +877,13 @@ static inline u32 compute_data_length(struct user_sdma_request *req,
return len;
}
+static inline u32 pad_len(u32 len)
+{
+ if (len & (sizeof(u32) - 1))
+ len += sizeof(u32) - (len & (sizeof(u32) - 1));
+ return len;
+}
+
static inline u32 get_lrh_len(struct hfi1_pkt_header hdr, u32 len)
{
/* (Size of complete header - size of PBC) + 4B ICRC + data length */
@@ -894,7 +975,8 @@ static int user_sdma_send_pkts(struct user_sdma_request *req, unsigned maxpkts)
if (test_bit(SDMA_REQ_HAVE_AHG, &req->flags)) {
if (!req->seqnum) {
u16 pbclen = le16_to_cpu(req->hdr.pbc[0]);
- u32 lrhlen = get_lrh_len(req->hdr, datalen);
+ u32 lrhlen = get_lrh_len(req->hdr,
+ pad_len(datalen));
/*
* Copy the request header into the tx header
* because the HW needs a cacheline-aligned
@@ -1048,39 +1130,24 @@ static inline int num_user_pages(const struct iovec *iov)
static u32 sdma_cache_evict(struct hfi1_user_sdma_pkt_q *pq, u32 npages)
{
- u32 cleared = 0;
- struct sdma_mmu_node *node, *ptr;
- struct list_head to_evict = LIST_HEAD_INIT(to_evict);
-
- spin_lock(&pq->evict_lock);
- list_for_each_entry_safe_reverse(node, ptr, &pq->evict, list) {
- /* Make sure that no one is still using the node. */
- if (!atomic_read(&node->refcount)) {
- set_bit(SDMA_CACHE_NODE_EVICT, &node->flags);
- list_del_init(&node->list);
- list_add(&node->list, &to_evict);
- cleared += node->npages;
- if (cleared >= npages)
- break;
- }
- }
- spin_unlock(&pq->evict_lock);
-
- list_for_each_entry_safe(node, ptr, &to_evict, list)
- hfi1_mmu_rb_remove(&pq->sdma_rb_root, &node->rb);
+ struct evict_data evict_data;
- return cleared;
+ evict_data.cleared = 0;
+ evict_data.target = npages;
+ hfi1_mmu_rb_evict(pq->handler, &evict_data);
+ return evict_data.cleared;
}
static int pin_vector_pages(struct user_sdma_request *req,
- struct user_sdma_iovec *iovec) {
+ struct user_sdma_iovec *iovec)
+{
int ret = 0, pinned, npages, cleared;
struct page **pages;
struct hfi1_user_sdma_pkt_q *pq = req->pq;
struct sdma_mmu_node *node = NULL;
struct mmu_rb_node *rb_node;
- rb_node = hfi1_mmu_rb_extract(&pq->sdma_rb_root,
+ rb_node = hfi1_mmu_rb_extract(pq->handler,
(unsigned long)iovec->iov.iov_base,
iovec->iov.iov_len);
if (rb_node && !IS_ERR(rb_node))
@@ -1096,7 +1163,6 @@ static int pin_vector_pages(struct user_sdma_request *req,
node->rb.addr = (unsigned long)iovec->iov.iov_base;
node->pq = pq;
atomic_set(&node->refcount, 0);
- INIT_LIST_HEAD(&node->list);
}
npages = num_user_pages(&iovec->iov);
@@ -1111,28 +1177,14 @@ static int pin_vector_pages(struct user_sdma_request *req,
npages -= node->npages;
- /*
- * If rb_node is NULL, it means that this is brand new node
- * and, therefore not on the eviction list.
- * If, however, the rb_node is non-NULL, it means that the
- * node is already in RB tree and, therefore on the eviction
- * list (nodes are unconditionally inserted in the eviction
- * list). In that case, we have to remove the node prior to
- * calling the eviction function in order to prevent it from
- * freeing this node.
- */
- if (rb_node) {
- spin_lock(&pq->evict_lock);
- list_del_init(&node->list);
- spin_unlock(&pq->evict_lock);
- }
retry:
- if (!hfi1_can_pin_pages(pq->dd, pq->n_locked, npages)) {
+ if (!hfi1_can_pin_pages(pq->dd, pq->mm,
+ atomic_read(&pq->n_locked), npages)) {
cleared = sdma_cache_evict(pq, npages);
if (cleared >= npages)
goto retry;
}
- pinned = hfi1_acquire_user_pages(
+ pinned = hfi1_acquire_user_pages(pq->mm,
((unsigned long)iovec->iov.iov_base +
(node->npages * PAGE_SIZE)), npages, 0,
pages + node->npages);
@@ -1142,7 +1194,7 @@ retry:
goto bail;
}
if (pinned != npages) {
- unpin_vector_pages(current->mm, pages, node->npages,
+ unpin_vector_pages(pq->mm, pages, node->npages,
pinned);
ret = -EFAULT;
goto bail;
@@ -1152,28 +1204,22 @@ retry:
node->pages = pages;
node->npages += pinned;
npages = node->npages;
- spin_lock(&pq->evict_lock);
- list_add(&node->list, &pq->evict);
- pq->n_locked += pinned;
- spin_unlock(&pq->evict_lock);
+ atomic_add(pinned, &pq->n_locked);
}
iovec->pages = node->pages;
iovec->npages = npages;
iovec->node = node;
- ret = hfi1_mmu_rb_insert(&req->pq->sdma_rb_root, &node->rb);
+ ret = hfi1_mmu_rb_insert(req->pq->handler, &node->rb);
if (ret) {
- spin_lock(&pq->evict_lock);
- if (!list_empty(&node->list))
- list_del(&node->list);
- pq->n_locked -= node->npages;
- spin_unlock(&pq->evict_lock);
+ atomic_sub(node->npages, &pq->n_locked);
+ iovec->node = NULL;
goto bail;
}
return 0;
bail:
if (rb_node)
- unpin_vector_pages(current->mm, node->pages, 0, node->npages);
+ unpin_vector_pages(pq->mm, node->pages, 0, node->npages);
kfree(node);
return ret;
}
@@ -1181,7 +1227,7 @@ bail:
static void unpin_vector_pages(struct mm_struct *mm, struct page **pages,
unsigned start, unsigned npages)
{
- hfi1_release_user_pages(mm, pages + start, npages, 0);
+ hfi1_release_user_pages(mm, pages + start, npages, false);
kfree(pages);
}
@@ -1192,16 +1238,14 @@ static int check_header_template(struct user_sdma_request *req,
/*
* Perform safety checks for any type of packet:
* - transfer size is multiple of 64bytes
- * - packet length is multiple of 4bytes
- * - entire request length is multiple of 4bytes
+ * - packet length is multiple of 4 bytes
* - packet length is not larger than MTU size
*
* These checks are only done for the first packet of the
* transfer since the header is "given" to us by user space.
* For the remainder of the packets we compute the values.
*/
- if (req->info.fragsize % PIO_BLOCK_SIZE ||
- lrhlen & 0x3 || req->data_len & 0x3 ||
+ if (req->info.fragsize % PIO_BLOCK_SIZE || lrhlen & 0x3 ||
lrhlen > get_lrh_len(*hdr, req->info.fragsize))
return -EINVAL;
@@ -1263,7 +1307,7 @@ static int set_txreq_header(struct user_sdma_request *req,
struct hfi1_pkt_header *hdr = &tx->hdr;
u16 pbclen;
int ret;
- u32 tidval = 0, lrhlen = get_lrh_len(*hdr, datalen);
+ u32 tidval = 0, lrhlen = get_lrh_len(*hdr, pad_len(datalen));
/* Copy the header template to the request before modification */
memcpy(hdr, &req->hdr, sizeof(*hdr));
@@ -1374,7 +1418,7 @@ static int set_txreq_header_ahg(struct user_sdma_request *req,
struct hfi1_user_sdma_pkt_q *pq = req->pq;
struct hfi1_pkt_header *hdr = &req->hdr;
u16 pbclen = le16_to_cpu(hdr->pbc[0]);
- u32 val32, tidval = 0, lrhlen = get_lrh_len(*hdr, len);
+ u32 val32, tidval = 0, lrhlen = get_lrh_len(*hdr, pad_len(len));
if (PBC2LRH(pbclen) != lrhlen) {
/* PBC.PbcLengthDWs */
@@ -1534,14 +1578,14 @@ static void user_sdma_free_request(struct user_sdma_request *req, bool unpin)
continue;
if (unpin)
- hfi1_mmu_rb_remove(&req->pq->sdma_rb_root,
+ hfi1_mmu_rb_remove(req->pq->handler,
&node->rb);
else
atomic_dec(&node->refcount);
}
}
kfree(req->tids);
- clear_bit(SDMA_REQ_IN_USE, &req->flags);
+ clear_bit(req->info.comp_idx, req->pq->req_in_use);
}
static inline void set_comp_state(struct hfi1_user_sdma_pkt_q *pq,
@@ -1564,7 +1608,7 @@ static bool sdma_rb_filter(struct mmu_rb_node *node, unsigned long addr,
return (bool)(node->addr == addr);
}
-static int sdma_rb_insert(struct rb_root *root, struct mmu_rb_node *mnode)
+static int sdma_rb_insert(void *arg, struct mmu_rb_node *mnode)
{
struct sdma_mmu_node *node =
container_of(mnode, struct sdma_mmu_node, rb);
@@ -1573,48 +1617,45 @@ static int sdma_rb_insert(struct rb_root *root, struct mmu_rb_node *mnode)
return 0;
}
-static void sdma_rb_remove(struct rb_root *root, struct mmu_rb_node *mnode,
- struct mm_struct *mm)
+/*
+ * Return 1 to remove the node from the rb tree and call the remove op.
+ *
+ * Called with the rb tree lock held.
+ */
+static int sdma_rb_evict(void *arg, struct mmu_rb_node *mnode,
+ void *evict_arg, bool *stop)
+{
+ struct sdma_mmu_node *node =
+ container_of(mnode, struct sdma_mmu_node, rb);
+ struct evict_data *evict_data = evict_arg;
+
+ /* is this node still being used? */
+ if (atomic_read(&node->refcount))
+ return 0; /* keep this node */
+
+ /* this node will be evicted, add its pages to our count */
+ evict_data->cleared += node->npages;
+
+ /* have enough pages been cleared? */
+ if (evict_data->cleared >= evict_data->target)
+ *stop = true;
+
+ return 1; /* remove this node */
+}
+
+static void sdma_rb_remove(void *arg, struct mmu_rb_node *mnode)
{
struct sdma_mmu_node *node =
container_of(mnode, struct sdma_mmu_node, rb);
- spin_lock(&node->pq->evict_lock);
- /*
- * We've been called by the MMU notifier but this node has been
- * scheduled for eviction. The eviction function will take care
- * of freeing this node.
- * We have to take the above lock first because we are racing
- * against the setting of the bit in the eviction function.
- */
- if (mm && test_bit(SDMA_CACHE_NODE_EVICT, &node->flags)) {
- spin_unlock(&node->pq->evict_lock);
- return;
- }
+ atomic_sub(node->npages, &node->pq->n_locked);
- if (!list_empty(&node->list))
- list_del(&node->list);
- node->pq->n_locked -= node->npages;
- spin_unlock(&node->pq->evict_lock);
+ unpin_vector_pages(node->pq->mm, node->pages, 0, node->npages);
- /*
- * If mm is set, we are being called by the MMU notifier and we
- * should not pass a mm_struct to unpin_vector_page(). This is to
- * prevent a deadlock when hfi1_release_user_pages() attempts to
- * take the mmap_sem, which the MMU notifier has already taken.
- */
- unpin_vector_pages(mm ? NULL : current->mm, node->pages, 0,
- node->npages);
- /*
- * If called by the MMU notifier, we have to adjust the pinned
- * page count ourselves.
- */
- if (mm)
- mm->pinned_vm -= node->npages;
kfree(node);
}
-static int sdma_rb_invalidate(struct rb_root *root, struct mmu_rb_node *mnode)
+static int sdma_rb_invalidate(void *arg, struct mmu_rb_node *mnode)
{
struct sdma_mmu_node *node =
container_of(mnode, struct sdma_mmu_node, rb);
diff --git a/drivers/infiniband/hw/hfi1/user_sdma.h b/drivers/infiniband/hw/hfi1/user_sdma.h
index b9240e351161..39001714f551 100644
--- a/drivers/infiniband/hw/hfi1/user_sdma.h
+++ b/drivers/infiniband/hw/hfi1/user_sdma.h
@@ -63,14 +63,14 @@ struct hfi1_user_sdma_pkt_q {
struct hfi1_devdata *dd;
struct kmem_cache *txreq_cache;
struct user_sdma_request *reqs;
+ unsigned long *req_in_use;
struct iowait busy;
unsigned state;
wait_queue_head_t wait;
unsigned long unpinned;
- struct rb_root sdma_rb_root;
- u32 n_locked;
- struct list_head evict;
- spinlock_t evict_lock; /* protect evict and n_locked */
+ struct mmu_rb_handler *handler;
+ atomic_t n_locked;
+ struct mm_struct *mm;
};
struct hfi1_user_sdma_comp_q {
diff --git a/drivers/infiniband/hw/hfi1/verbs.c b/drivers/infiniband/hw/hfi1/verbs.c
index 849c4b9399d4..2b359540901d 100644
--- a/drivers/infiniband/hw/hfi1/verbs.c
+++ b/drivers/infiniband/hw/hfi1/verbs.c
@@ -306,7 +306,10 @@ const enum ib_wc_opcode ib_hfi1_wc_opcode[] = {
[IB_WR_SEND_WITH_IMM] = IB_WC_SEND,
[IB_WR_RDMA_READ] = IB_WC_RDMA_READ,
[IB_WR_ATOMIC_CMP_AND_SWP] = IB_WC_COMP_SWAP,
- [IB_WR_ATOMIC_FETCH_AND_ADD] = IB_WC_FETCH_ADD
+ [IB_WR_ATOMIC_FETCH_AND_ADD] = IB_WC_FETCH_ADD,
+ [IB_WR_SEND_WITH_INV] = IB_WC_SEND,
+ [IB_WR_LOCAL_INV] = IB_WC_LOCAL_INV,
+ [IB_WR_REG_MR] = IB_WC_REG_MR
};
/*
@@ -378,6 +381,8 @@ static const opcode_handler opcode_handler_tbl[256] = {
[IB_OPCODE_RC_ATOMIC_ACKNOWLEDGE] = &hfi1_rc_rcv,
[IB_OPCODE_RC_COMPARE_SWAP] = &hfi1_rc_rcv,
[IB_OPCODE_RC_FETCH_ADD] = &hfi1_rc_rcv,
+ [IB_OPCODE_RC_SEND_LAST_WITH_INVALIDATE] = &hfi1_rc_rcv,
+ [IB_OPCODE_RC_SEND_ONLY_WITH_INVALIDATE] = &hfi1_rc_rcv,
/* UC */
[IB_OPCODE_UC_SEND_FIRST] = &hfi1_uc_rcv,
[IB_OPCODE_UC_SEND_MIDDLE] = &hfi1_uc_rcv,
@@ -540,19 +545,15 @@ void hfi1_skip_sge(struct rvt_sge_state *ss, u32 length, int release)
/*
* Make sure the QP is ready and able to accept the given opcode.
*/
-static inline int qp_ok(int opcode, struct hfi1_packet *packet)
+static inline opcode_handler qp_ok(int opcode, struct hfi1_packet *packet)
{
- struct hfi1_ibport *ibp;
-
if (!(ib_rvt_state_ops[packet->qp->state] & RVT_PROCESS_RECV_OK))
- goto dropit;
+ return NULL;
if (((opcode & RVT_OPCODE_QP_MASK) == packet->qp->allowed_ops) ||
(opcode == IB_OPCODE_CNP))
- return 1;
-dropit:
- ibp = &packet->rcd->ppd->ibport_data;
- ibp->rvp.n_pkt_drops++;
- return 0;
+ return opcode_handler_tbl[opcode];
+
+ return NULL;
}
/**
@@ -571,6 +572,7 @@ void hfi1_ib_rcv(struct hfi1_packet *packet)
struct hfi1_pportdata *ppd = rcd->ppd;
struct hfi1_ibport *ibp = &ppd->ibport_data;
struct rvt_dev_info *rdi = &ppd->dd->verbs_dev.rdi;
+ opcode_handler packet_handler;
unsigned long flags;
u32 qp_num;
int lnh;
@@ -616,8 +618,11 @@ void hfi1_ib_rcv(struct hfi1_packet *packet)
list_for_each_entry_rcu(p, &mcast->qp_list, list) {
packet->qp = p->qp;
spin_lock_irqsave(&packet->qp->r_lock, flags);
- if (likely((qp_ok(opcode, packet))))
- opcode_handler_tbl[opcode](packet);
+ packet_handler = qp_ok(opcode, packet);
+ if (likely(packet_handler))
+ packet_handler(packet);
+ else
+ ibp->rvp.n_pkt_drops++;
spin_unlock_irqrestore(&packet->qp->r_lock, flags);
}
/*
@@ -634,8 +639,11 @@ void hfi1_ib_rcv(struct hfi1_packet *packet)
goto drop;
}
spin_lock_irqsave(&packet->qp->r_lock, flags);
- if (likely((qp_ok(opcode, packet))))
- opcode_handler_tbl[opcode](packet);
+ packet_handler = qp_ok(opcode, packet);
+ if (likely(packet_handler))
+ packet_handler(packet);
+ else
+ ibp->rvp.n_pkt_drops++;
spin_unlock_irqrestore(&packet->qp->r_lock, flags);
rcu_read_unlock();
}
@@ -808,19 +816,19 @@ static int build_verbs_tx_desc(
struct rvt_sge_state *ss,
u32 length,
struct verbs_txreq *tx,
- struct ahg_ib_header *ahdr,
+ struct hfi1_ahg_info *ahg_info,
u64 pbc)
{
int ret = 0;
- struct hfi1_pio_header *phdr = &tx->phdr;
+ struct hfi1_sdma_header *phdr = &tx->phdr;
u16 hdrbytes = tx->hdr_dwords << 2;
- if (!ahdr->ahgcount) {
+ if (!ahg_info->ahgcount) {
ret = sdma_txinit_ahg(
&tx->txreq,
- ahdr->tx_flags,
+ ahg_info->tx_flags,
hdrbytes + length,
- ahdr->ahgidx,
+ ahg_info->ahgidx,
0,
NULL,
0,
@@ -838,11 +846,11 @@ static int build_verbs_tx_desc(
} else {
ret = sdma_txinit_ahg(
&tx->txreq,
- ahdr->tx_flags,
+ ahg_info->tx_flags,
length,
- ahdr->ahgidx,
- ahdr->ahgcount,
- ahdr->ahgdesc,
+ ahg_info->ahgidx,
+ ahg_info->ahgcount,
+ ahg_info->ahgdesc,
hdrbytes,
verbs_sdma_complete);
if (ret)
@@ -860,7 +868,7 @@ int hfi1_verbs_send_dma(struct rvt_qp *qp, struct hfi1_pkt_state *ps,
u64 pbc)
{
struct hfi1_qp_priv *priv = qp->priv;
- struct ahg_ib_header *ahdr = priv->s_hdr;
+ struct hfi1_ahg_info *ahg_info = priv->s_ahg;
u32 hdrwords = qp->s_hdrwords;
struct rvt_sge_state *ss = qp->s_cur_sge;
u32 len = qp->s_cur_size;
@@ -888,7 +896,7 @@ int hfi1_verbs_send_dma(struct rvt_qp *qp, struct hfi1_pkt_state *ps,
plen);
}
tx->wqe = qp->s_wqe;
- ret = build_verbs_tx_desc(tx->sde, ss, len, tx, ahdr, pbc);
+ ret = build_verbs_tx_desc(tx->sde, ss, len, tx, ahg_info, pbc);
if (unlikely(ret))
goto bail_build;
}
@@ -1291,19 +1299,24 @@ int hfi1_verbs_send(struct rvt_qp *qp, struct hfi1_pkt_state *ps)
static void hfi1_fill_device_attr(struct hfi1_devdata *dd)
{
struct rvt_dev_info *rdi = &dd->verbs_dev.rdi;
+ u16 ver = dd->dc8051_ver;
memset(&rdi->dparms.props, 0, sizeof(rdi->dparms.props));
+ rdi->dparms.props.fw_ver = ((u64)(dc8051_ver_maj(ver)) << 16) |
+ (u64)dc8051_ver_min(ver);
rdi->dparms.props.device_cap_flags = IB_DEVICE_BAD_PKEY_CNTR |
IB_DEVICE_BAD_QKEY_CNTR | IB_DEVICE_SHUTDOWN_PORT |
IB_DEVICE_SYS_IMAGE_GUID | IB_DEVICE_RC_RNR_NAK_GEN |
- IB_DEVICE_PORT_ACTIVE_EVENT | IB_DEVICE_SRQ_RESIZE;
+ IB_DEVICE_PORT_ACTIVE_EVENT | IB_DEVICE_SRQ_RESIZE |
+ IB_DEVICE_MEM_MGT_EXTENSIONS;
rdi->dparms.props.page_size_cap = PAGE_SIZE;
rdi->dparms.props.vendor_id = dd->oui1 << 16 | dd->oui2 << 8 | dd->oui3;
rdi->dparms.props.vendor_part_id = dd->pcidev->device;
rdi->dparms.props.hw_ver = dd->minrev;
rdi->dparms.props.sys_image_guid = ib_hfi1_sys_image_guid;
- rdi->dparms.props.max_mr_size = ~0ULL;
+ rdi->dparms.props.max_mr_size = U64_MAX;
+ rdi->dparms.props.max_fast_reg_page_list_len = UINT_MAX;
rdi->dparms.props.max_qp = hfi1_max_qps;
rdi->dparms.props.max_qp_wr = hfi1_max_qp_wrs;
rdi->dparms.props.max_sge = hfi1_max_sges;
@@ -1567,6 +1580,17 @@ static void init_ibport(struct hfi1_pportdata *ppd)
RCU_INIT_POINTER(ibp->rvp.qp[1], NULL);
}
+static void hfi1_get_dev_fw_str(struct ib_device *ibdev, char *str,
+ size_t str_len)
+{
+ struct rvt_dev_info *rdi = ib_to_rvt(ibdev);
+ struct hfi1_ibdev *dev = dev_from_rdi(rdi);
+ u16 ver = dd_from_dev(dev)->dc8051_ver;
+
+ snprintf(str, str_len, "%u.%u", dc8051_ver_maj(ver),
+ dc8051_ver_min(ver));
+}
+
/**
* hfi1_register_ib_device - register our device with the infiniband core
* @dd: the device data structure
@@ -1613,6 +1637,7 @@ int hfi1_register_ib_device(struct hfi1_devdata *dd)
/* keep process mad in the driver */
ibdev->process_mad = hfi1_process_mad;
+ ibdev->get_dev_fw_str = hfi1_get_dev_fw_str;
strncpy(ibdev->node_desc, init_utsname()->nodename,
sizeof(ibdev->node_desc));
@@ -1680,6 +1705,9 @@ int hfi1_register_ib_device(struct hfi1_devdata *dd)
dd->verbs_dev.rdi.dparms.nports = dd->num_pports;
dd->verbs_dev.rdi.dparms.npkeys = hfi1_get_npkeys(dd);
+ /* post send table */
+ dd->verbs_dev.rdi.post_parms = hfi1_post_parms;
+
ppd = dd->pport;
for (i = 0; i < dd->num_pports; i++, ppd++)
rvt_init_port(&dd->verbs_dev.rdi,
@@ -1730,8 +1758,7 @@ void hfi1_cnp_rcv(struct hfi1_packet *packet)
struct rvt_qp *qp = packet->qp;
u32 lqpn, rqpn = 0;
u16 rlid = 0;
- u8 sl, sc5, sc4_bit, svc_type;
- bool sc4_set = has_sc4_bit(packet);
+ u8 sl, sc5, svc_type;
switch (packet->qp->ibqp.qp_type) {
case IB_QPT_UC:
@@ -1754,9 +1781,7 @@ void hfi1_cnp_rcv(struct hfi1_packet *packet)
return;
}
- sc4_bit = sc4_set << 4;
- sc5 = (be16_to_cpu(hdr->lrh[0]) >> 12) & 0xf;
- sc5 |= sc4_bit;
+ sc5 = hdr2sc((struct hfi1_message_header *)hdr, packet->rhf);
sl = ibp->sc_to_sl[sc5];
lqpn = qp->ibqp.qp_num;
diff --git a/drivers/infiniband/hw/hfi1/verbs.h b/drivers/infiniband/hw/hfi1/verbs.h
index 488356775627..d1b101c54828 100644
--- a/drivers/infiniband/hw/hfi1/verbs.h
+++ b/drivers/infiniband/hw/hfi1/verbs.h
@@ -178,16 +178,14 @@ struct hfi1_ib_header {
} u;
} __packed;
-struct ahg_ib_header {
- struct sdma_engine *sde;
+struct hfi1_ahg_info {
u32 ahgdesc[2];
u16 tx_flags;
u8 ahgcount;
u8 ahgidx;
- struct hfi1_ib_header ibh;
};
-struct hfi1_pio_header {
+struct hfi1_sdma_header {
__le64 pbc;
struct hfi1_ib_header hdr;
} __packed;
@@ -197,7 +195,7 @@ struct hfi1_pio_header {
* pair is made common
*/
struct hfi1_qp_priv {
- struct ahg_ib_header *s_hdr; /* next header to send */
+ struct hfi1_ahg_info *s_ahg; /* ahg info for next header */
struct sdma_engine *s_sde; /* current sde */
struct send_context *s_sendcontext; /* current sendcontext */
u8 s_sc; /* SC[0..4] for next packet */
diff --git a/drivers/infiniband/hw/hfi1/verbs_txreq.h b/drivers/infiniband/hw/hfi1/verbs_txreq.h
index a1d6e0807f97..5660897593ba 100644
--- a/drivers/infiniband/hw/hfi1/verbs_txreq.h
+++ b/drivers/infiniband/hw/hfi1/verbs_txreq.h
@@ -56,7 +56,7 @@
#include "iowait.h"
struct verbs_txreq {
- struct hfi1_pio_header phdr;
+ struct hfi1_sdma_header phdr;
struct sdma_txreq txreq;
struct rvt_qp *qp;
struct rvt_swqe *wqe;
diff --git a/drivers/infiniband/hw/i40iw/i40iw_cm.c b/drivers/infiniband/hw/i40iw/i40iw_cm.c
index d2fa72516960..5026dc79978a 100644
--- a/drivers/infiniband/hw/i40iw/i40iw_cm.c
+++ b/drivers/infiniband/hw/i40iw/i40iw_cm.c
@@ -1567,12 +1567,12 @@ static enum i40iw_status_code i40iw_del_multiple_qhash(
ret = i40iw_manage_qhash(iwdev, cm_info,
I40IW_QHASH_TYPE_TCP_SYN,
I40IW_QHASH_MANAGE_TYPE_DELETE, NULL, false);
- kfree(child_listen_node);
- cm_parent_listen_node->cm_core->stats_listen_nodes_destroyed++;
i40iw_debug(&iwdev->sc_dev,
I40IW_DEBUG_CM,
"freed pointer = %p\n",
child_listen_node);
+ kfree(child_listen_node);
+ cm_parent_listen_node->cm_core->stats_listen_nodes_destroyed++;
}
spin_unlock_irqrestore(&iwdev->cm_core.listen_list_lock, flags);
diff --git a/drivers/infiniband/hw/i40iw/i40iw_d.h b/drivers/infiniband/hw/i40iw/i40iw_d.h
index bd942da91a27..2fac1db0e0a0 100644
--- a/drivers/infiniband/hw/i40iw/i40iw_d.h
+++ b/drivers/infiniband/hw/i40iw/i40iw_d.h
@@ -1557,6 +1557,9 @@ enum i40iw_alignment {
#define I40IW_RING_MOVE_TAIL(_ring) \
(_ring).tail = ((_ring).tail + 1) % (_ring).size
+#define I40IW_RING_MOVE_HEAD_NOCHECK(_ring) \
+ (_ring).head = ((_ring).head + 1) % (_ring).size
+
#define I40IW_RING_MOVE_TAIL_BY_COUNT(_ring, _count) \
(_ring).tail = ((_ring).tail + (_count)) % (_ring).size
diff --git a/drivers/infiniband/hw/i40iw/i40iw_puda.c b/drivers/infiniband/hw/i40iw/i40iw_puda.c
index e9c6e82af9c7..c62d354f7810 100644
--- a/drivers/infiniband/hw/i40iw/i40iw_puda.c
+++ b/drivers/infiniband/hw/i40iw/i40iw_puda.c
@@ -1025,6 +1025,8 @@ static void i40iw_ieq_compl_pfpdu(struct i40iw_puda_rsrc *ieq,
u16 txoffset, bufoffset;
buf = i40iw_puda_get_listbuf(pbufl);
+ if (!buf)
+ return;
nextseqnum = buf->seqnum + fpdu_len;
txbuf->totallen = buf->hdrlen + fpdu_len;
txbuf->data = (u8 *)txbuf->mem.va + buf->hdrlen;
@@ -1048,6 +1050,8 @@ static void i40iw_ieq_compl_pfpdu(struct i40iw_puda_rsrc *ieq,
fpdu_len -= buf->datalen;
i40iw_puda_ret_bufpool(ieq, buf);
buf = i40iw_puda_get_listbuf(pbufl);
+ if (!buf)
+ return;
bufoffset = (u16)(buf->data - (u8 *)buf->mem.va);
} while (1);
diff --git a/drivers/infiniband/hw/i40iw/i40iw_type.h b/drivers/infiniband/hw/i40iw/i40iw_type.h
index 16cc61720b53..2b1a04e9ca3c 100644
--- a/drivers/infiniband/hw/i40iw/i40iw_type.h
+++ b/drivers/infiniband/hw/i40iw/i40iw_type.h
@@ -667,7 +667,7 @@ struct i40iw_tcp_offload_info {
bool time_stamp;
u8 cwnd_inc_limit;
bool drop_ooo_seg;
- bool dup_ack_thresh;
+ u8 dup_ack_thresh;
u8 ttl;
u8 src_mac_addr_idx;
bool avoid_stretch_ack;
diff --git a/drivers/infiniband/hw/i40iw/i40iw_uk.c b/drivers/infiniband/hw/i40iw/i40iw_uk.c
index e35faea88c13..4d28c3cb03cc 100644
--- a/drivers/infiniband/hw/i40iw/i40iw_uk.c
+++ b/drivers/infiniband/hw/i40iw/i40iw_uk.c
@@ -291,9 +291,9 @@ static enum i40iw_status_code i40iw_rdma_write(struct i40iw_qp_uk *qp,
i40iw_set_fragment(wqe, 0, op_info->lo_sg_list);
- for (i = 1; i < op_info->num_lo_sges; i++) {
- byte_off = 32 + (i - 1) * 16;
+ for (i = 1, byte_off = 32; i < op_info->num_lo_sges; i++) {
i40iw_set_fragment(wqe, byte_off, &op_info->lo_sg_list[i]);
+ byte_off += 16;
}
wmb(); /* make sure WQE is populated before valid bit is set */
@@ -401,9 +401,9 @@ static enum i40iw_status_code i40iw_send(struct i40iw_qp_uk *qp,
i40iw_set_fragment(wqe, 0, op_info->sg_list);
- for (i = 1; i < op_info->num_sges; i++) {
- byte_off = 32 + (i - 1) * 16;
+ for (i = 1, byte_off = 32; i < op_info->num_sges; i++) {
i40iw_set_fragment(wqe, byte_off, &op_info->sg_list[i]);
+ byte_off += 16;
}
wmb(); /* make sure WQE is populated before valid bit is set */
@@ -685,9 +685,9 @@ static enum i40iw_status_code i40iw_post_receive(struct i40iw_qp_uk *qp,
i40iw_set_fragment(wqe, 0, info->sg_list);
- for (i = 1; i < info->num_sges; i++) {
- byte_off = 32 + (i - 1) * 16;
+ for (i = 1, byte_off = 32; i < info->num_sges; i++) {
i40iw_set_fragment(wqe, byte_off, &info->sg_list[i]);
+ byte_off += 16;
}
wmb(); /* make sure WQE is populated before valid bit is set */
@@ -753,8 +753,7 @@ static enum i40iw_status_code i40iw_cq_post_entries(struct i40iw_cq_uk *cq,
* @post_cq: update cq tail
*/
static enum i40iw_status_code i40iw_cq_poll_completion(struct i40iw_cq_uk *cq,
- struct i40iw_cq_poll_info *info,
- bool post_cq)
+ struct i40iw_cq_poll_info *info)
{
u64 comp_ctx, qword0, qword2, qword3, wqe_qword;
u64 *cqe, *sw_wqe;
@@ -762,7 +761,6 @@ static enum i40iw_status_code i40iw_cq_poll_completion(struct i40iw_cq_uk *cq,
struct i40iw_ring *pring = NULL;
u32 wqe_idx, q_type, array_idx = 0;
enum i40iw_status_code ret_code = 0;
- enum i40iw_status_code ret_code2 = 0;
bool move_cq_head = true;
u8 polarity;
u8 addl_wqes = 0;
@@ -870,19 +868,14 @@ exit:
move_cq_head = false;
if (move_cq_head) {
- I40IW_RING_MOVE_HEAD(cq->cq_ring, ret_code2);
-
- if (ret_code2 && !ret_code)
- ret_code = ret_code2;
+ I40IW_RING_MOVE_HEAD_NOCHECK(cq->cq_ring);
if (I40IW_RING_GETCURRENT_HEAD(cq->cq_ring) == 0)
cq->polarity ^= 1;
- if (post_cq) {
- I40IW_RING_MOVE_TAIL(cq->cq_ring);
- set_64bit_val(cq->shadow_area, 0,
- I40IW_RING_GETCURRENT_HEAD(cq->cq_ring));
- }
+ I40IW_RING_MOVE_TAIL(cq->cq_ring);
+ set_64bit_val(cq->shadow_area, 0,
+ I40IW_RING_GETCURRENT_HEAD(cq->cq_ring));
} else {
if (info->is_srq)
return ret_code;
diff --git a/drivers/infiniband/hw/i40iw/i40iw_user.h b/drivers/infiniband/hw/i40iw/i40iw_user.h
index 4627646fe8cd..276bcefffd7e 100644
--- a/drivers/infiniband/hw/i40iw/i40iw_user.h
+++ b/drivers/infiniband/hw/i40iw/i40iw_user.h
@@ -327,7 +327,7 @@ struct i40iw_cq_ops {
void (*iw_cq_request_notification)(struct i40iw_cq_uk *,
enum i40iw_completion_notify);
enum i40iw_status_code (*iw_cq_poll_completion)(struct i40iw_cq_uk *,
- struct i40iw_cq_poll_info *, bool);
+ struct i40iw_cq_poll_info *);
enum i40iw_status_code (*iw_cq_post_entries)(struct i40iw_cq_uk *, u8 count);
void (*iw_cq_clean)(void *, struct i40iw_cq_uk *);
};
diff --git a/drivers/infiniband/hw/i40iw/i40iw_verbs.c b/drivers/infiniband/hw/i40iw/i40iw_verbs.c
index 283b64c942ee..2360338877bf 100644
--- a/drivers/infiniband/hw/i40iw/i40iw_verbs.c
+++ b/drivers/infiniband/hw/i40iw/i40iw_verbs.c
@@ -529,7 +529,7 @@ static int i40iw_setup_kmode_qp(struct i40iw_device *iwdev,
status = i40iw_get_wqe_shift(rq_size, ukinfo->max_rq_frag_cnt, 0, &rqshift);
if (status)
- return -ENOSYS;
+ return -ENOMEM;
sqdepth = sq_size << sqshift;
rqdepth = rq_size << rqshift;
@@ -671,7 +671,7 @@ static struct ib_qp *i40iw_create_qp(struct ib_pd *ibpd,
iwqp->ctx_info.qp_compl_ctx = (uintptr_t)qp;
if (init_attr->qp_type != IB_QPT_RC) {
- err_code = -ENOSYS;
+ err_code = -EINVAL;
goto error;
}
if (iwdev->push_mode)
@@ -1840,6 +1840,7 @@ struct ib_mr *i40iw_reg_phys_mr(struct ib_pd *pd,
iwmr->ibmr.lkey = stag;
iwmr->page_cnt = 1;
iwmr->pgaddrmem[0] = addr;
+ iwmr->length = size;
status = i40iw_hwreg_mr(iwdev, iwmr, access);
if (status) {
i40iw_free_stag(iwdev, stag);
@@ -1863,7 +1864,7 @@ static struct ib_mr *i40iw_get_dma_mr(struct ib_pd *pd, int acc)
{
u64 kva = 0;
- return i40iw_reg_phys_mr(pd, 0, 0xffffffffffULL, acc, &kva);
+ return i40iw_reg_phys_mr(pd, 0, 0, acc, &kva);
}
/**
@@ -1975,18 +1976,6 @@ static ssize_t i40iw_show_rev(struct device *dev,
}
/**
- * i40iw_show_fw_ver
- */
-static ssize_t i40iw_show_fw_ver(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- u32 firmware_version = I40IW_FW_VERSION;
-
- return sprintf(buf, "%u.%u\n", firmware_version,
- (firmware_version & 0x000000ff));
-}
-
-/**
* i40iw_show_hca
*/
static ssize_t i40iw_show_hca(struct device *dev,
@@ -2006,13 +1995,11 @@ static ssize_t i40iw_show_board(struct device *dev,
}
static DEVICE_ATTR(hw_rev, S_IRUGO, i40iw_show_rev, NULL);
-static DEVICE_ATTR(fw_ver, S_IRUGO, i40iw_show_fw_ver, NULL);
static DEVICE_ATTR(hca_type, S_IRUGO, i40iw_show_hca, NULL);
static DEVICE_ATTR(board_id, S_IRUGO, i40iw_show_board, NULL);
static struct device_attribute *i40iw_dev_attributes[] = {
&dev_attr_hw_rev,
- &dev_attr_fw_ver,
&dev_attr_hca_type,
&dev_attr_board_id
};
@@ -2091,8 +2078,12 @@ static int i40iw_post_send(struct ib_qp *ibqp,
ret = ukqp->ops.iw_send(ukqp, &info, ib_wr->ex.invalidate_rkey, false);
}
- if (ret)
- err = -EIO;
+ if (ret) {
+ if (ret == I40IW_ERR_QP_TOOMANY_WRS_POSTED)
+ err = -ENOMEM;
+ else
+ err = -EINVAL;
+ }
break;
case IB_WR_RDMA_WRITE:
info.op_type = I40IW_OP_TYPE_RDMA_WRITE;
@@ -2113,8 +2104,12 @@ static int i40iw_post_send(struct ib_qp *ibqp,
ret = ukqp->ops.iw_rdma_write(ukqp, &info, false);
}
- if (ret)
- err = -EIO;
+ if (ret) {
+ if (ret == I40IW_ERR_QP_TOOMANY_WRS_POSTED)
+ err = -ENOMEM;
+ else
+ err = -EINVAL;
+ }
break;
case IB_WR_RDMA_READ_WITH_INV:
inv_stag = true;
@@ -2132,15 +2127,19 @@ static int i40iw_post_send(struct ib_qp *ibqp,
info.op.rdma_read.lo_addr.stag = ib_wr->sg_list->lkey;
info.op.rdma_read.lo_addr.len = ib_wr->sg_list->length;
ret = ukqp->ops.iw_rdma_read(ukqp, &info, inv_stag, false);
- if (ret)
- err = -EIO;
+ if (ret) {
+ if (ret == I40IW_ERR_QP_TOOMANY_WRS_POSTED)
+ err = -ENOMEM;
+ else
+ err = -EINVAL;
+ }
break;
case IB_WR_LOCAL_INV:
info.op_type = I40IW_OP_TYPE_INV_STAG;
info.op.inv_local_stag.target_stag = ib_wr->ex.invalidate_rkey;
ret = ukqp->ops.iw_stag_local_invalidate(ukqp, &info, true);
if (ret)
- err = -EIO;
+ err = -ENOMEM;
break;
case IB_WR_REG_MR:
{
@@ -2174,7 +2173,7 @@ static int i40iw_post_send(struct ib_qp *ibqp,
ret = dev->iw_priv_qp_ops->iw_mr_fast_register(&iwqp->sc_qp, &info, true);
if (ret)
- err = -EIO;
+ err = -ENOMEM;
break;
}
default:
@@ -2214,6 +2213,7 @@ static int i40iw_post_recv(struct ib_qp *ibqp,
struct i40iw_sge sg_list[I40IW_MAX_WQ_FRAGMENT_COUNT];
enum i40iw_status_code ret = 0;
unsigned long flags;
+ int err = 0;
iwqp = (struct i40iw_qp *)ibqp;
ukqp = &iwqp->sc_qp.qp_uk;
@@ -2228,6 +2228,10 @@ static int i40iw_post_recv(struct ib_qp *ibqp,
ret = ukqp->ops.iw_post_receive(ukqp, &post_recv);
if (ret) {
i40iw_pr_err(" post_recv err %d\n", ret);
+ if (ret == I40IW_ERR_QP_TOOMANY_WRS_POSTED)
+ err = -ENOMEM;
+ else
+ err = -EINVAL;
*bad_wr = ib_wr;
goto out;
}
@@ -2235,9 +2239,7 @@ static int i40iw_post_recv(struct ib_qp *ibqp,
}
out:
spin_unlock_irqrestore(&iwqp->lock, flags);
- if (ret)
- return -ENOSYS;
- return 0;
+ return err;
}
/**
@@ -2264,7 +2266,7 @@ static int i40iw_poll_cq(struct ib_cq *ibcq,
spin_lock_irqsave(&iwcq->lock, flags);
while (cqe_count < num_entries) {
- ret = ukcq->ops.iw_cq_poll_completion(ukcq, &cq_poll_info, true);
+ ret = ukcq->ops.iw_cq_poll_completion(ukcq, &cq_poll_info);
if (ret == I40IW_ERR_QUEUE_EMPTY) {
break;
} else if (ret == I40IW_ERR_QUEUE_DESTROYED) {
@@ -2437,6 +2439,15 @@ static const char * const i40iw_hw_stat_names[] = {
"iwRdmaInv"
};
+static void i40iw_get_dev_fw_str(struct ib_device *dev, char *str,
+ size_t str_len)
+{
+ u32 firmware_version = I40IW_FW_VERSION;
+
+ snprintf(str, str_len, "%u.%u", firmware_version,
+ (firmware_version & 0x000000ff));
+}
+
/**
* i40iw_alloc_hw_stats - Allocate a hw stats structure
* @ibdev: device pointer from stack
@@ -2528,7 +2539,7 @@ static int i40iw_modify_port(struct ib_device *ibdev,
int port_modify_mask,
struct ib_port_modify *props)
{
- return 0;
+ return -ENOSYS;
}
/**
@@ -2660,6 +2671,7 @@ static struct i40iw_ib_device *i40iw_init_rdma_device(struct i40iw_device *iwdev
memcpy(iwibdev->ibdev.iwcm->ifname, netdev->name,
sizeof(iwibdev->ibdev.iwcm->ifname));
iwibdev->ibdev.get_port_immutable = i40iw_port_immutable;
+ iwibdev->ibdev.get_dev_fw_str = i40iw_get_dev_fw_str;
iwibdev->ibdev.poll_cq = i40iw_poll_cq;
iwibdev->ibdev.req_notify_cq = i40iw_req_notify_cq;
iwibdev->ibdev.post_send = i40iw_post_send;
@@ -2723,7 +2735,7 @@ int i40iw_register_rdma_device(struct i40iw_device *iwdev)
iwdev->iwibdev = i40iw_init_rdma_device(iwdev);
if (!iwdev->iwibdev)
- return -ENOSYS;
+ return -ENOMEM;
iwibdev = iwdev->iwibdev;
ret = ib_register_device(&iwibdev->ibdev, NULL);
@@ -2748,5 +2760,5 @@ error:
kfree(iwdev->iwibdev->ibdev.iwcm);
iwdev->iwibdev->ibdev.iwcm = NULL;
ib_dealloc_device(&iwdev->iwibdev->ibdev);
- return -ENOSYS;
+ return ret;
}
diff --git a/drivers/infiniband/hw/mlx4/cq.c b/drivers/infiniband/hw/mlx4/cq.c
index 9f8b516eb2b0..d6fc8a6e8c33 100644
--- a/drivers/infiniband/hw/mlx4/cq.c
+++ b/drivers/infiniband/hw/mlx4/cq.c
@@ -288,7 +288,7 @@ static int mlx4_alloc_resize_buf(struct mlx4_ib_dev *dev, struct mlx4_ib_cq *cq,
if (cq->resize_buf)
return -EBUSY;
- cq->resize_buf = kmalloc(sizeof *cq->resize_buf, GFP_ATOMIC);
+ cq->resize_buf = kmalloc(sizeof *cq->resize_buf, GFP_KERNEL);
if (!cq->resize_buf)
return -ENOMEM;
@@ -316,7 +316,7 @@ static int mlx4_alloc_resize_umem(struct mlx4_ib_dev *dev, struct mlx4_ib_cq *cq
if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
return -EFAULT;
- cq->resize_buf = kmalloc(sizeof *cq->resize_buf, GFP_ATOMIC);
+ cq->resize_buf = kmalloc(sizeof *cq->resize_buf, GFP_KERNEL);
if (!cq->resize_buf)
return -ENOMEM;
diff --git a/drivers/infiniband/hw/mlx4/main.c b/drivers/infiniband/hw/mlx4/main.c
index 42a46078d7d5..2af44c2de262 100644
--- a/drivers/infiniband/hw/mlx4/main.c
+++ b/drivers/infiniband/hw/mlx4/main.c
@@ -2025,16 +2025,6 @@ static ssize_t show_hca(struct device *device, struct device_attribute *attr,
return sprintf(buf, "MT%d\n", dev->dev->persist->pdev->device);
}
-static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
- char *buf)
-{
- struct mlx4_ib_dev *dev =
- container_of(device, struct mlx4_ib_dev, ib_dev.dev);
- return sprintf(buf, "%d.%d.%d\n", (int) (dev->dev->caps.fw_ver >> 32),
- (int) (dev->dev->caps.fw_ver >> 16) & 0xffff,
- (int) dev->dev->caps.fw_ver & 0xffff);
-}
-
static ssize_t show_rev(struct device *device, struct device_attribute *attr,
char *buf)
{
@@ -2053,17 +2043,204 @@ static ssize_t show_board(struct device *device, struct device_attribute *attr,
}
static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
-static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
static struct device_attribute *mlx4_class_attributes[] = {
&dev_attr_hw_rev,
- &dev_attr_fw_ver,
&dev_attr_hca_type,
&dev_attr_board_id
};
+struct diag_counter {
+ const char *name;
+ u32 offset;
+};
+
+#define DIAG_COUNTER(_name, _offset) \
+ { .name = #_name, .offset = _offset }
+
+static const struct diag_counter diag_basic[] = {
+ DIAG_COUNTER(rq_num_lle, 0x00),
+ DIAG_COUNTER(sq_num_lle, 0x04),
+ DIAG_COUNTER(rq_num_lqpoe, 0x08),
+ DIAG_COUNTER(sq_num_lqpoe, 0x0C),
+ DIAG_COUNTER(rq_num_lpe, 0x18),
+ DIAG_COUNTER(sq_num_lpe, 0x1C),
+ DIAG_COUNTER(rq_num_wrfe, 0x20),
+ DIAG_COUNTER(sq_num_wrfe, 0x24),
+ DIAG_COUNTER(sq_num_mwbe, 0x2C),
+ DIAG_COUNTER(sq_num_bre, 0x34),
+ DIAG_COUNTER(sq_num_rire, 0x44),
+ DIAG_COUNTER(rq_num_rire, 0x48),
+ DIAG_COUNTER(sq_num_rae, 0x4C),
+ DIAG_COUNTER(rq_num_rae, 0x50),
+ DIAG_COUNTER(sq_num_roe, 0x54),
+ DIAG_COUNTER(sq_num_tree, 0x5C),
+ DIAG_COUNTER(sq_num_rree, 0x64),
+ DIAG_COUNTER(rq_num_rnr, 0x68),
+ DIAG_COUNTER(sq_num_rnr, 0x6C),
+ DIAG_COUNTER(rq_num_oos, 0x100),
+ DIAG_COUNTER(sq_num_oos, 0x104),
+};
+
+static const struct diag_counter diag_ext[] = {
+ DIAG_COUNTER(rq_num_dup, 0x130),
+ DIAG_COUNTER(sq_num_to, 0x134),
+};
+
+static const struct diag_counter diag_device_only[] = {
+ DIAG_COUNTER(num_cqovf, 0x1A0),
+ DIAG_COUNTER(rq_num_udsdprd, 0x118),
+};
+
+static struct rdma_hw_stats *mlx4_ib_alloc_hw_stats(struct ib_device *ibdev,
+ u8 port_num)
+{
+ struct mlx4_ib_dev *dev = to_mdev(ibdev);
+ struct mlx4_ib_diag_counters *diag = dev->diag_counters;
+
+ if (!diag[!!port_num].name)
+ return NULL;
+
+ return rdma_alloc_hw_stats_struct(diag[!!port_num].name,
+ diag[!!port_num].num_counters,
+ RDMA_HW_STATS_DEFAULT_LIFESPAN);
+}
+
+static int mlx4_ib_get_hw_stats(struct ib_device *ibdev,
+ struct rdma_hw_stats *stats,
+ u8 port, int index)
+{
+ struct mlx4_ib_dev *dev = to_mdev(ibdev);
+ struct mlx4_ib_diag_counters *diag = dev->diag_counters;
+ u32 hw_value[ARRAY_SIZE(diag_device_only) +
+ ARRAY_SIZE(diag_ext) + ARRAY_SIZE(diag_basic)] = {};
+ int ret;
+ int i;
+
+ ret = mlx4_query_diag_counters(dev->dev,
+ MLX4_OP_MOD_QUERY_TRANSPORT_CI_ERRORS,
+ diag[!!port].offset, hw_value,
+ diag[!!port].num_counters, port);
+
+ if (ret)
+ return ret;
+
+ for (i = 0; i < diag[!!port].num_counters; i++)
+ stats->value[i] = hw_value[i];
+
+ return diag[!!port].num_counters;
+}
+
+static int __mlx4_ib_alloc_diag_counters(struct mlx4_ib_dev *ibdev,
+ const char ***name,
+ u32 **offset,
+ u32 *num,
+ bool port)
+{
+ u32 num_counters;
+
+ num_counters = ARRAY_SIZE(diag_basic);
+
+ if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT)
+ num_counters += ARRAY_SIZE(diag_ext);
+
+ if (!port)
+ num_counters += ARRAY_SIZE(diag_device_only);
+
+ *name = kcalloc(num_counters, sizeof(**name), GFP_KERNEL);
+ if (!*name)
+ return -ENOMEM;
+
+ *offset = kcalloc(num_counters, sizeof(**offset), GFP_KERNEL);
+ if (!*offset)
+ goto err_name;
+
+ *num = num_counters;
+
+ return 0;
+
+err_name:
+ kfree(*name);
+ return -ENOMEM;
+}
+
+static void mlx4_ib_fill_diag_counters(struct mlx4_ib_dev *ibdev,
+ const char **name,
+ u32 *offset,
+ bool port)
+{
+ int i;
+ int j;
+
+ for (i = 0, j = 0; i < ARRAY_SIZE(diag_basic); i++, j++) {
+ name[i] = diag_basic[i].name;
+ offset[i] = diag_basic[i].offset;
+ }
+
+ if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT) {
+ for (i = 0; i < ARRAY_SIZE(diag_ext); i++, j++) {
+ name[j] = diag_ext[i].name;
+ offset[j] = diag_ext[i].offset;
+ }
+ }
+
+ if (!port) {
+ for (i = 0; i < ARRAY_SIZE(diag_device_only); i++, j++) {
+ name[j] = diag_device_only[i].name;
+ offset[j] = diag_device_only[i].offset;
+ }
+ }
+}
+
+static int mlx4_ib_alloc_diag_counters(struct mlx4_ib_dev *ibdev)
+{
+ struct mlx4_ib_diag_counters *diag = ibdev->diag_counters;
+ int i;
+ int ret;
+ bool per_port = !!(ibdev->dev->caps.flags2 &
+ MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT);
+
+ for (i = 0; i < MLX4_DIAG_COUNTERS_TYPES; i++) {
+ /* i == 1 means we are building port counters */
+ if (i && !per_port)
+ continue;
+
+ ret = __mlx4_ib_alloc_diag_counters(ibdev, &diag[i].name,
+ &diag[i].offset,
+ &diag[i].num_counters, i);
+ if (ret)
+ goto err_alloc;
+
+ mlx4_ib_fill_diag_counters(ibdev, diag[i].name,
+ diag[i].offset, i);
+ }
+
+ ibdev->ib_dev.get_hw_stats = mlx4_ib_get_hw_stats;
+ ibdev->ib_dev.alloc_hw_stats = mlx4_ib_alloc_hw_stats;
+
+ return 0;
+
+err_alloc:
+ if (i) {
+ kfree(diag[i - 1].name);
+ kfree(diag[i - 1].offset);
+ }
+
+ return ret;
+}
+
+static void mlx4_ib_diag_cleanup(struct mlx4_ib_dev *ibdev)
+{
+ int i;
+
+ for (i = 0; i < MLX4_DIAG_COUNTERS_TYPES; i++) {
+ kfree(ibdev->diag_counters[i].offset);
+ kfree(ibdev->diag_counters[i].name);
+ }
+}
+
#define MLX4_IB_INVALID_MAC ((u64)-1)
static void mlx4_ib_update_qps(struct mlx4_ib_dev *ibdev,
struct net_device *dev,
@@ -2280,6 +2457,17 @@ static int mlx4_port_immutable(struct ib_device *ibdev, u8 port_num,
return 0;
}
+static void get_fw_ver_str(struct ib_device *device, char *str,
+ size_t str_len)
+{
+ struct mlx4_ib_dev *dev =
+ container_of(device, struct mlx4_ib_dev, ib_dev);
+ snprintf(str, str_len, "%d.%d.%d",
+ (int) (dev->dev->caps.fw_ver >> 32),
+ (int) (dev->dev->caps.fw_ver >> 16) & 0xffff,
+ (int) dev->dev->caps.fw_ver & 0xffff);
+}
+
static void *mlx4_ib_add(struct mlx4_dev *dev)
{
struct mlx4_ib_dev *ibdev;
@@ -2413,6 +2601,7 @@ static void *mlx4_ib_add(struct mlx4_dev *dev)
ibdev->ib_dev.detach_mcast = mlx4_ib_mcg_detach;
ibdev->ib_dev.process_mad = mlx4_ib_process_mad;
ibdev->ib_dev.get_port_immutable = mlx4_port_immutable;
+ ibdev->ib_dev.get_dev_fw_str = get_fw_ver_str;
ibdev->ib_dev.disassociate_ucontext = mlx4_ib_disassociate_ucontext;
if (!mlx4_is_slave(ibdev->dev)) {
@@ -2555,9 +2744,12 @@ static void *mlx4_ib_add(struct mlx4_dev *dev)
for (j = 1; j <= ibdev->dev->caps.num_ports; j++)
atomic64_set(&iboe->mac[j - 1], ibdev->dev->caps.def_mac[j]);
- if (ib_register_device(&ibdev->ib_dev, NULL))
+ if (mlx4_ib_alloc_diag_counters(ibdev))
goto err_steer_free_bitmap;
+ if (ib_register_device(&ibdev->ib_dev, NULL))
+ goto err_diag_counters;
+
if (mlx4_ib_mad_init(ibdev))
goto err_reg;
@@ -2623,6 +2815,9 @@ err_mad:
err_reg:
ib_unregister_device(&ibdev->ib_dev);
+err_diag_counters:
+ mlx4_ib_diag_cleanup(ibdev);
+
err_steer_free_bitmap:
kfree(ibdev->ib_uc_qpns_bitmap);
@@ -2726,6 +2921,7 @@ static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
mlx4_ib_close_sriov(ibdev);
mlx4_ib_mad_cleanup(ibdev);
ib_unregister_device(&ibdev->ib_dev);
+ mlx4_ib_diag_cleanup(ibdev);
if (ibdev->iboe.nb.notifier_call) {
if (unregister_netdevice_notifier(&ibdev->iboe.nb))
pr_warn("failure unregistering notifier\n");
diff --git a/drivers/infiniband/hw/mlx4/mlx4_ib.h b/drivers/infiniband/hw/mlx4/mlx4_ib.h
index 29acda249612..7c5832ede4bd 100644
--- a/drivers/infiniband/hw/mlx4/mlx4_ib.h
+++ b/drivers/infiniband/hw/mlx4/mlx4_ib.h
@@ -549,6 +549,14 @@ struct mlx4_ib_counters {
u32 default_counter;
};
+#define MLX4_DIAG_COUNTERS_TYPES 2
+
+struct mlx4_ib_diag_counters {
+ const char **name;
+ u32 *offset;
+ u32 num_counters;
+};
+
struct mlx4_ib_dev {
struct ib_device ib_dev;
struct mlx4_dev *dev;
@@ -585,6 +593,7 @@ struct mlx4_ib_dev {
/* protect resources needed as part of reset flow */
spinlock_t reset_flow_resource_lock;
struct list_head qp_list;
+ struct mlx4_ib_diag_counters diag_counters[MLX4_DIAG_COUNTERS_TYPES];
};
struct ib_event_work {
diff --git a/drivers/infiniband/hw/mlx5/cq.c b/drivers/infiniband/hw/mlx5/cq.c
index 9c0e67bd2ba7..308a358e5b46 100644
--- a/drivers/infiniband/hw/mlx5/cq.c
+++ b/drivers/infiniband/hw/mlx5/cq.c
@@ -424,6 +424,83 @@ static void get_sig_err_item(struct mlx5_sig_err_cqe *cqe,
item->key = be32_to_cpu(cqe->mkey);
}
+static void sw_send_comp(struct mlx5_ib_qp *qp, int num_entries,
+ struct ib_wc *wc, int *npolled)
+{
+ struct mlx5_ib_wq *wq;
+ unsigned int cur;
+ unsigned int idx;
+ int np;
+ int i;
+
+ wq = &qp->sq;
+ cur = wq->head - wq->tail;
+ np = *npolled;
+
+ if (cur == 0)
+ return;
+
+ for (i = 0; i < cur && np < num_entries; i++) {
+ idx = wq->last_poll & (wq->wqe_cnt - 1);
+ wc->wr_id = wq->wrid[idx];
+ wc->status = IB_WC_WR_FLUSH_ERR;
+ wc->vendor_err = MLX5_CQE_SYNDROME_WR_FLUSH_ERR;
+ wq->tail++;
+ np++;
+ wc->qp = &qp->ibqp;
+ wc++;
+ wq->last_poll = wq->w_list[idx].next;
+ }
+ *npolled = np;
+}
+
+static void sw_recv_comp(struct mlx5_ib_qp *qp, int num_entries,
+ struct ib_wc *wc, int *npolled)
+{
+ struct mlx5_ib_wq *wq;
+ unsigned int cur;
+ int np;
+ int i;
+
+ wq = &qp->rq;
+ cur = wq->head - wq->tail;
+ np = *npolled;
+
+ if (cur == 0)
+ return;
+
+ for (i = 0; i < cur && np < num_entries; i++) {
+ wc->wr_id = wq->wrid[wq->tail & (wq->wqe_cnt - 1)];
+ wc->status = IB_WC_WR_FLUSH_ERR;
+ wc->vendor_err = MLX5_CQE_SYNDROME_WR_FLUSH_ERR;
+ wq->tail++;
+ np++;
+ wc->qp = &qp->ibqp;
+ wc++;
+ }
+ *npolled = np;
+}
+
+static void mlx5_ib_poll_sw_comp(struct mlx5_ib_cq *cq, int num_entries,
+ struct ib_wc *wc, int *npolled)
+{
+ struct mlx5_ib_qp *qp;
+
+ *npolled = 0;
+ /* Find uncompleted WQEs belonging to that cq and retrun mmics ones */
+ list_for_each_entry(qp, &cq->list_send_qp, cq_send_list) {
+ sw_send_comp(qp, num_entries, wc + *npolled, npolled);
+ if (*npolled >= num_entries)
+ return;
+ }
+
+ list_for_each_entry(qp, &cq->list_recv_qp, cq_recv_list) {
+ sw_recv_comp(qp, num_entries, wc + *npolled, npolled);
+ if (*npolled >= num_entries)
+ return;
+ }
+}
+
static int mlx5_poll_one(struct mlx5_ib_cq *cq,
struct mlx5_ib_qp **cur_qp,
struct ib_wc *wc)
@@ -594,12 +671,18 @@ int mlx5_ib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc)
{
struct mlx5_ib_cq *cq = to_mcq(ibcq);
struct mlx5_ib_qp *cur_qp = NULL;
+ struct mlx5_ib_dev *dev = to_mdev(cq->ibcq.device);
+ struct mlx5_core_dev *mdev = dev->mdev;
unsigned long flags;
int soft_polled = 0;
int npolled;
int err = 0;
spin_lock_irqsave(&cq->lock, flags);
+ if (mdev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR) {
+ mlx5_ib_poll_sw_comp(cq, num_entries, wc, &npolled);
+ goto out;
+ }
if (unlikely(!list_empty(&cq->wc_list)))
soft_polled = poll_soft_wc(cq, num_entries, wc);
@@ -612,7 +695,7 @@ int mlx5_ib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc)
if (npolled)
mlx5_cq_set_ci(&cq->mcq);
-
+out:
spin_unlock_irqrestore(&cq->lock, flags);
if (err == 0 || err == -EAGAIN)
@@ -843,6 +926,8 @@ struct ib_cq *mlx5_ib_create_cq(struct ib_device *ibdev,
cq->resize_buf = NULL;
cq->resize_umem = NULL;
cq->create_flags = attr->flags;
+ INIT_LIST_HEAD(&cq->list_send_qp);
+ INIT_LIST_HEAD(&cq->list_recv_qp);
if (context) {
err = create_cq_user(dev, udata, context, cq, entries,
diff --git a/drivers/infiniband/hw/mlx5/gsi.c b/drivers/infiniband/hw/mlx5/gsi.c
index 53e03c8ede79..79e6309460dc 100644
--- a/drivers/infiniband/hw/mlx5/gsi.c
+++ b/drivers/infiniband/hw/mlx5/gsi.c
@@ -69,15 +69,6 @@ static bool mlx5_ib_deth_sqpn_cap(struct mlx5_ib_dev *dev)
return MLX5_CAP_GEN(dev->mdev, set_deth_sqpn);
}
-static u32 next_outstanding(struct mlx5_ib_gsi_qp *gsi, u32 index)
-{
- return ++index % gsi->cap.max_send_wr;
-}
-
-#define for_each_outstanding_wr(gsi, index) \
- for (index = gsi->outstanding_ci; index != gsi->outstanding_pi; \
- index = next_outstanding(gsi, index))
-
/* Call with gsi->lock locked */
static void generate_completions(struct mlx5_ib_gsi_qp *gsi)
{
@@ -85,8 +76,9 @@ static void generate_completions(struct mlx5_ib_gsi_qp *gsi)
struct mlx5_ib_gsi_wr *wr;
u32 index;
- for_each_outstanding_wr(gsi, index) {
- wr = &gsi->outstanding_wrs[index];
+ for (index = gsi->outstanding_ci; index != gsi->outstanding_pi;
+ index++) {
+ wr = &gsi->outstanding_wrs[index % gsi->cap.max_send_wr];
if (!wr->completed)
break;
@@ -430,8 +422,9 @@ static int mlx5_ib_add_outstanding_wr(struct mlx5_ib_gsi_qp *gsi,
return -ENOMEM;
}
- gsi_wr = &gsi->outstanding_wrs[gsi->outstanding_pi];
- gsi->outstanding_pi = next_outstanding(gsi, gsi->outstanding_pi);
+ gsi_wr = &gsi->outstanding_wrs[gsi->outstanding_pi %
+ gsi->cap.max_send_wr];
+ gsi->outstanding_pi++;
if (!wc) {
memset(&gsi_wr->wc, 0, sizeof(gsi_wr->wc));
diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c
index dad63f038bb8..a84bb766fc62 100644
--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -42,11 +42,13 @@
#include <asm/pat.h>
#endif
#include <linux/sched.h>
+#include <linux/delay.h>
#include <rdma/ib_user_verbs.h>
#include <rdma/ib_addr.h>
#include <rdma/ib_cache.h>
#include <linux/mlx5/port.h>
#include <linux/mlx5/vport.h>
+#include <linux/list.h>
#include <rdma/ib_smi.h>
#include <rdma/ib_umem.h>
#include <linux/in.h>
@@ -457,8 +459,17 @@ static int mlx5_ib_query_device(struct ib_device *ibdev,
int max_rq_sg;
int max_sq_sg;
u64 min_page_size = 1ull << MLX5_CAP_GEN(mdev, log_pg_sz);
+ struct mlx5_ib_query_device_resp resp = {};
+ size_t resp_len;
+ u64 max_tso;
- if (uhw->inlen || uhw->outlen)
+ resp_len = sizeof(resp.comp_mask) + sizeof(resp.response_length);
+ if (uhw->outlen && uhw->outlen < resp_len)
+ return -EINVAL;
+ else
+ resp.response_length = resp_len;
+
+ if (uhw->inlen && !ib_is_udata_cleared(uhw, 0, uhw->inlen))
return -EINVAL;
memset(props, 0, sizeof(*props));
@@ -511,10 +522,21 @@ static int mlx5_ib_query_device(struct ib_device *ibdev,
if (MLX5_CAP_GEN(mdev, block_lb_mc))
props->device_cap_flags |= IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;
- if (MLX5_CAP_GEN(dev->mdev, eth_net_offloads) &&
- (MLX5_CAP_ETH(dev->mdev, csum_cap)))
+ if (MLX5_CAP_GEN(dev->mdev, eth_net_offloads)) {
+ if (MLX5_CAP_ETH(mdev, csum_cap))
props->device_cap_flags |= IB_DEVICE_RAW_IP_CSUM;
+ if (field_avail(typeof(resp), tso_caps, uhw->outlen)) {
+ max_tso = MLX5_CAP_ETH(mdev, max_lso_cap);
+ if (max_tso) {
+ resp.tso_caps.max_tso = 1 << max_tso;
+ resp.tso_caps.supported_qpts |=
+ 1 << IB_QPT_RAW_PACKET;
+ resp.response_length += sizeof(resp.tso_caps);
+ }
+ }
+ }
+
if (MLX5_CAP_GEN(mdev, ipoib_basic_offloads)) {
props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
props->device_cap_flags |= IB_DEVICE_UD_TSO;
@@ -576,6 +598,13 @@ static int mlx5_ib_query_device(struct ib_device *ibdev,
if (!mlx5_core_is_pf(mdev))
props->device_cap_flags |= IB_DEVICE_VIRTUAL_FUNCTION;
+ if (uhw->outlen) {
+ err = ib_copy_to_udata(uhw, &resp, resp.response_length);
+
+ if (err)
+ return err;
+ }
+
return 0;
}
@@ -983,6 +1012,7 @@ static struct ib_ucontext *mlx5_ib_alloc_ucontext(struct ib_device *ibdev,
goto out_uars;
}
+ INIT_LIST_HEAD(&context->vma_private_list);
INIT_LIST_HEAD(&context->db_page_list);
mutex_init(&context->db_page_mutex);
@@ -992,6 +1022,11 @@ static struct ib_ucontext *mlx5_ib_alloc_ucontext(struct ib_device *ibdev,
if (field_avail(typeof(resp), cqe_version, udata->outlen))
resp.response_length += sizeof(resp.cqe_version);
+ if (field_avail(typeof(resp), cmds_supp_uhw, udata->outlen)) {
+ resp.cmds_supp_uhw |= MLX5_USER_CMDS_SUPP_UHW_QUERY_DEVICE;
+ resp.response_length += sizeof(resp.cmds_supp_uhw);
+ }
+
/*
* We don't want to expose information from the PCI bar that is located
* after 4096 bytes, so if the arch only supports larger pages, let's
@@ -1006,8 +1041,7 @@ static struct ib_ucontext *mlx5_ib_alloc_ucontext(struct ib_device *ibdev,
offsetof(struct mlx5_init_seg, internal_timer_h) %
PAGE_SIZE;
resp.response_length += sizeof(resp.hca_core_clock_offset) +
- sizeof(resp.reserved2) +
- sizeof(resp.reserved3);
+ sizeof(resp.reserved2);
}
err = ib_copy_to_udata(udata, &resp, resp.response_length);
@@ -1086,6 +1120,125 @@ static int get_index(unsigned long offset)
return get_arg(offset);
}
+static void mlx5_ib_vma_open(struct vm_area_struct *area)
+{
+ /* vma_open is called when a new VMA is created on top of our VMA. This
+ * is done through either mremap flow or split_vma (usually due to
+ * mlock, madvise, munmap, etc.) We do not support a clone of the VMA,
+ * as this VMA is strongly hardware related. Therefore we set the
+ * vm_ops of the newly created/cloned VMA to NULL, to prevent it from
+ * calling us again and trying to do incorrect actions. We assume that
+ * the original VMA size is exactly a single page, and therefore all
+ * "splitting" operation will not happen to it.
+ */
+ area->vm_ops = NULL;
+}
+
+static void mlx5_ib_vma_close(struct vm_area_struct *area)
+{
+ struct mlx5_ib_vma_private_data *mlx5_ib_vma_priv_data;
+
+ /* It's guaranteed that all VMAs opened on a FD are closed before the
+ * file itself is closed, therefore no sync is needed with the regular
+ * closing flow. (e.g. mlx5 ib_dealloc_ucontext)
+ * However need a sync with accessing the vma as part of
+ * mlx5_ib_disassociate_ucontext.
+ * The close operation is usually called under mm->mmap_sem except when
+ * process is exiting.
+ * The exiting case is handled explicitly as part of
+ * mlx5_ib_disassociate_ucontext.
+ */
+ mlx5_ib_vma_priv_data = (struct mlx5_ib_vma_private_data *)area->vm_private_data;
+
+ /* setting the vma context pointer to null in the mlx5_ib driver's
+ * private data, to protect a race condition in
+ * mlx5_ib_disassociate_ucontext().
+ */
+ mlx5_ib_vma_priv_data->vma = NULL;
+ list_del(&mlx5_ib_vma_priv_data->list);
+ kfree(mlx5_ib_vma_priv_data);
+}
+
+static const struct vm_operations_struct mlx5_ib_vm_ops = {
+ .open = mlx5_ib_vma_open,
+ .close = mlx5_ib_vma_close
+};
+
+static int mlx5_ib_set_vma_data(struct vm_area_struct *vma,
+ struct mlx5_ib_ucontext *ctx)
+{
+ struct mlx5_ib_vma_private_data *vma_prv;
+ struct list_head *vma_head = &ctx->vma_private_list;
+
+ vma_prv = kzalloc(sizeof(*vma_prv), GFP_KERNEL);
+ if (!vma_prv)
+ return -ENOMEM;
+
+ vma_prv->vma = vma;
+ vma->vm_private_data = vma_prv;
+ vma->vm_ops = &mlx5_ib_vm_ops;
+
+ list_add(&vma_prv->list, vma_head);
+
+ return 0;
+}
+
+static void mlx5_ib_disassociate_ucontext(struct ib_ucontext *ibcontext)
+{
+ int ret;
+ struct vm_area_struct *vma;
+ struct mlx5_ib_vma_private_data *vma_private, *n;
+ struct mlx5_ib_ucontext *context = to_mucontext(ibcontext);
+ struct task_struct *owning_process = NULL;
+ struct mm_struct *owning_mm = NULL;
+
+ owning_process = get_pid_task(ibcontext->tgid, PIDTYPE_PID);
+ if (!owning_process)
+ return;
+
+ owning_mm = get_task_mm(owning_process);
+ if (!owning_mm) {
+ pr_info("no mm, disassociate ucontext is pending task termination\n");
+ while (1) {
+ put_task_struct(owning_process);
+ usleep_range(1000, 2000);
+ owning_process = get_pid_task(ibcontext->tgid,
+ PIDTYPE_PID);
+ if (!owning_process ||
+ owning_process->state == TASK_DEAD) {
+ pr_info("disassociate ucontext done, task was terminated\n");
+ /* in case task was dead need to release the
+ * task struct.
+ */
+ if (owning_process)
+ put_task_struct(owning_process);
+ return;
+ }
+ }
+ }
+
+ /* need to protect from a race on closing the vma as part of
+ * mlx5_ib_vma_close.
+ */
+ down_read(&owning_mm->mmap_sem);
+ list_for_each_entry_safe(vma_private, n, &context->vma_private_list,
+ list) {
+ vma = vma_private->vma;
+ ret = zap_vma_ptes(vma, vma->vm_start,
+ PAGE_SIZE);
+ WARN_ONCE(ret, "%s: zap_vma_ptes failed", __func__);
+ /* context going to be destroyed, should
+ * not access ops any more.
+ */
+ vma->vm_ops = NULL;
+ list_del(&vma_private->list);
+ kfree(vma_private);
+ }
+ up_read(&owning_mm->mmap_sem);
+ mmput(owning_mm);
+ put_task_struct(owning_process);
+}
+
static inline char *mmap_cmd2str(enum mlx5_ib_mmap_cmd cmd)
{
switch (cmd) {
@@ -1101,8 +1254,10 @@ static inline char *mmap_cmd2str(enum mlx5_ib_mmap_cmd cmd)
}
static int uar_mmap(struct mlx5_ib_dev *dev, enum mlx5_ib_mmap_cmd cmd,
- struct vm_area_struct *vma, struct mlx5_uuar_info *uuari)
+ struct vm_area_struct *vma,
+ struct mlx5_ib_ucontext *context)
{
+ struct mlx5_uuar_info *uuari = &context->uuari;
int err;
unsigned long idx;
phys_addr_t pfn, pa;
@@ -1152,14 +1307,13 @@ static int uar_mmap(struct mlx5_ib_dev *dev, enum mlx5_ib_mmap_cmd cmd,
mlx5_ib_dbg(dev, "mapped %s at 0x%lx, PA %pa\n", mmap_cmd2str(cmd),
vma->vm_start, &pa);
- return 0;
+ return mlx5_ib_set_vma_data(vma, context);
}
static int mlx5_ib_mmap(struct ib_ucontext *ibcontext, struct vm_area_struct *vma)
{
struct mlx5_ib_ucontext *context = to_mucontext(ibcontext);
struct mlx5_ib_dev *dev = to_mdev(ibcontext->device);
- struct mlx5_uuar_info *uuari = &context->uuari;
unsigned long command;
phys_addr_t pfn;
@@ -1168,7 +1322,7 @@ static int mlx5_ib_mmap(struct ib_ucontext *ibcontext, struct vm_area_struct *vm
case MLX5_IB_MMAP_WC_PAGE:
case MLX5_IB_MMAP_NC_PAGE:
case MLX5_IB_MMAP_REGULAR_PAGE:
- return uar_mmap(dev, command, vma, uuari);
+ return uar_mmap(dev, command, vma, context);
case MLX5_IB_MMAP_GET_CONTIGUOUS_PAGES:
return -ENOSYS;
@@ -1331,6 +1485,32 @@ static int parse_flow_attr(u32 *match_c, u32 *match_v,
&ib_spec->ipv4.val.dst_ip,
sizeof(ib_spec->ipv4.val.dst_ip));
break;
+ case IB_FLOW_SPEC_IPV6:
+ if (ib_spec->size != sizeof(ib_spec->ipv6))
+ return -EINVAL;
+
+ MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c,
+ ethertype, 0xffff);
+ MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v,
+ ethertype, ETH_P_IPV6);
+
+ memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, outer_headers_c,
+ src_ipv4_src_ipv6.ipv6_layout.ipv6),
+ &ib_spec->ipv6.mask.src_ip,
+ sizeof(ib_spec->ipv6.mask.src_ip));
+ memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, outer_headers_v,
+ src_ipv4_src_ipv6.ipv6_layout.ipv6),
+ &ib_spec->ipv6.val.src_ip,
+ sizeof(ib_spec->ipv6.val.src_ip));
+ memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, outer_headers_c,
+ dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
+ &ib_spec->ipv6.mask.dst_ip,
+ sizeof(ib_spec->ipv6.mask.dst_ip));
+ memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, outer_headers_v,
+ dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
+ &ib_spec->ipv6.val.dst_ip,
+ sizeof(ib_spec->ipv6.val.dst_ip));
+ break;
case IB_FLOW_SPEC_TCP:
if (ib_spec->size != sizeof(ib_spec->tcp_udp))
return -EINVAL;
@@ -1801,15 +1981,6 @@ static ssize_t show_hca(struct device *device, struct device_attribute *attr,
return sprintf(buf, "MT%d\n", dev->mdev->pdev->device);
}
-static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
- char *buf)
-{
- struct mlx5_ib_dev *dev =
- container_of(device, struct mlx5_ib_dev, ib_dev.dev);
- return sprintf(buf, "%d.%d.%04d\n", fw_rev_maj(dev->mdev),
- fw_rev_min(dev->mdev), fw_rev_sub(dev->mdev));
-}
-
static ssize_t show_rev(struct device *device, struct device_attribute *attr,
char *buf)
{
@@ -1828,7 +1999,6 @@ static ssize_t show_board(struct device *device, struct device_attribute *attr,
}
static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
-static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
static DEVICE_ATTR(fw_pages, S_IRUGO, show_fw_pages, NULL);
@@ -1836,7 +2006,6 @@ static DEVICE_ATTR(reg_pages, S_IRUGO, show_reg_pages, NULL);
static struct device_attribute *mlx5_class_attributes[] = {
&dev_attr_hw_rev,
- &dev_attr_fw_ver,
&dev_attr_hca_type,
&dev_attr_board_id,
&dev_attr_fw_pages,
@@ -1854,6 +2023,65 @@ static void pkey_change_handler(struct work_struct *work)
mutex_unlock(&ports->devr->mutex);
}
+static void mlx5_ib_handle_internal_error(struct mlx5_ib_dev *ibdev)
+{
+ struct mlx5_ib_qp *mqp;
+ struct mlx5_ib_cq *send_mcq, *recv_mcq;
+ struct mlx5_core_cq *mcq;
+ struct list_head cq_armed_list;
+ unsigned long flags_qp;
+ unsigned long flags_cq;
+ unsigned long flags;
+
+ INIT_LIST_HEAD(&cq_armed_list);
+
+ /* Go over qp list reside on that ibdev, sync with create/destroy qp.*/
+ spin_lock_irqsave(&ibdev->reset_flow_resource_lock, flags);
+ list_for_each_entry(mqp, &ibdev->qp_list, qps_list) {
+ spin_lock_irqsave(&mqp->sq.lock, flags_qp);
+ if (mqp->sq.tail != mqp->sq.head) {
+ send_mcq = to_mcq(mqp->ibqp.send_cq);
+ spin_lock_irqsave(&send_mcq->lock, flags_cq);
+ if (send_mcq->mcq.comp &&
+ mqp->ibqp.send_cq->comp_handler) {
+ if (!send_mcq->mcq.reset_notify_added) {
+ send_mcq->mcq.reset_notify_added = 1;
+ list_add_tail(&send_mcq->mcq.reset_notify,
+ &cq_armed_list);
+ }
+ }
+ spin_unlock_irqrestore(&send_mcq->lock, flags_cq);
+ }
+ spin_unlock_irqrestore(&mqp->sq.lock, flags_qp);
+ spin_lock_irqsave(&mqp->rq.lock, flags_qp);
+ /* no handling is needed for SRQ */
+ if (!mqp->ibqp.srq) {
+ if (mqp->rq.tail != mqp->rq.head) {
+ recv_mcq = to_mcq(mqp->ibqp.recv_cq);
+ spin_lock_irqsave(&recv_mcq->lock, flags_cq);
+ if (recv_mcq->mcq.comp &&
+ mqp->ibqp.recv_cq->comp_handler) {
+ if (!recv_mcq->mcq.reset_notify_added) {
+ recv_mcq->mcq.reset_notify_added = 1;
+ list_add_tail(&recv_mcq->mcq.reset_notify,
+ &cq_armed_list);
+ }
+ }
+ spin_unlock_irqrestore(&recv_mcq->lock,
+ flags_cq);
+ }
+ }
+ spin_unlock_irqrestore(&mqp->rq.lock, flags_qp);
+ }
+ /*At that point all inflight post send were put to be executed as of we
+ * lock/unlock above locks Now need to arm all involved CQs.
+ */
+ list_for_each_entry(mcq, &cq_armed_list, reset_notify) {
+ mcq->comp(mcq);
+ }
+ spin_unlock_irqrestore(&ibdev->reset_flow_resource_lock, flags);
+}
+
static void mlx5_ib_event(struct mlx5_core_dev *dev, void *context,
enum mlx5_dev_event event, unsigned long param)
{
@@ -1866,6 +2094,7 @@ static void mlx5_ib_event(struct mlx5_core_dev *dev, void *context,
case MLX5_DEV_EVENT_SYS_ERROR:
ibdev->ib_active = false;
ibev.event = IB_EVENT_DEVICE_FATAL;
+ mlx5_ib_handle_internal_error(ibdev);
break;
case MLX5_DEV_EVENT_PORT_UP:
@@ -2272,6 +2501,15 @@ static int mlx5_port_immutable(struct ib_device *ibdev, u8 port_num,
return 0;
}
+static void get_dev_fw_str(struct ib_device *ibdev, char *str,
+ size_t str_len)
+{
+ struct mlx5_ib_dev *dev =
+ container_of(ibdev, struct mlx5_ib_dev, ib_dev);
+ snprintf(str, str_len, "%d.%d.%04d", fw_rev_maj(dev->mdev),
+ fw_rev_min(dev->mdev), fw_rev_sub(dev->mdev));
+}
+
static int mlx5_enable_roce(struct mlx5_ib_dev *dev)
{
int err;
@@ -2298,6 +2536,113 @@ static void mlx5_disable_roce(struct mlx5_ib_dev *dev)
unregister_netdevice_notifier(&dev->roce.nb);
}
+static void mlx5_ib_dealloc_q_counters(struct mlx5_ib_dev *dev)
+{
+ unsigned int i;
+
+ for (i = 0; i < dev->num_ports; i++)
+ mlx5_core_dealloc_q_counter(dev->mdev,
+ dev->port[i].q_cnt_id);
+}
+
+static int mlx5_ib_alloc_q_counters(struct mlx5_ib_dev *dev)
+{
+ int i;
+ int ret;
+
+ for (i = 0; i < dev->num_ports; i++) {
+ ret = mlx5_core_alloc_q_counter(dev->mdev,
+ &dev->port[i].q_cnt_id);
+ if (ret) {
+ mlx5_ib_warn(dev,
+ "couldn't allocate queue counter for port %d, err %d\n",
+ i + 1, ret);
+ goto dealloc_counters;
+ }
+ }
+
+ return 0;
+
+dealloc_counters:
+ while (--i >= 0)
+ mlx5_core_dealloc_q_counter(dev->mdev,
+ dev->port[i].q_cnt_id);
+
+ return ret;
+}
+
+static const char * const names[] = {
+ "rx_write_requests",
+ "rx_read_requests",
+ "rx_atomic_requests",
+ "out_of_buffer",
+ "out_of_sequence",
+ "duplicate_request",
+ "rnr_nak_retry_err",
+ "packet_seq_err",
+ "implied_nak_seq_err",
+ "local_ack_timeout_err",
+};
+
+static const size_t stats_offsets[] = {
+ MLX5_BYTE_OFF(query_q_counter_out, rx_write_requests),
+ MLX5_BYTE_OFF(query_q_counter_out, rx_read_requests),
+ MLX5_BYTE_OFF(query_q_counter_out, rx_atomic_requests),
+ MLX5_BYTE_OFF(query_q_counter_out, out_of_buffer),
+ MLX5_BYTE_OFF(query_q_counter_out, out_of_sequence),
+ MLX5_BYTE_OFF(query_q_counter_out, duplicate_request),
+ MLX5_BYTE_OFF(query_q_counter_out, rnr_nak_retry_err),
+ MLX5_BYTE_OFF(query_q_counter_out, packet_seq_err),
+ MLX5_BYTE_OFF(query_q_counter_out, implied_nak_seq_err),
+ MLX5_BYTE_OFF(query_q_counter_out, local_ack_timeout_err),
+};
+
+static struct rdma_hw_stats *mlx5_ib_alloc_hw_stats(struct ib_device *ibdev,
+ u8 port_num)
+{
+ BUILD_BUG_ON(ARRAY_SIZE(names) != ARRAY_SIZE(stats_offsets));
+
+ /* We support only per port stats */
+ if (port_num == 0)
+ return NULL;
+
+ return rdma_alloc_hw_stats_struct(names, ARRAY_SIZE(names),
+ RDMA_HW_STATS_DEFAULT_LIFESPAN);
+}
+
+static int mlx5_ib_get_hw_stats(struct ib_device *ibdev,
+ struct rdma_hw_stats *stats,
+ u8 port, int index)
+{
+ struct mlx5_ib_dev *dev = to_mdev(ibdev);
+ int outlen = MLX5_ST_SZ_BYTES(query_q_counter_out);
+ void *out;
+ __be32 val;
+ int ret;
+ int i;
+
+ if (!port || !stats)
+ return -ENOSYS;
+
+ out = mlx5_vzalloc(outlen);
+ if (!out)
+ return -ENOMEM;
+
+ ret = mlx5_core_query_q_counter(dev->mdev,
+ dev->port[port - 1].q_cnt_id, 0,
+ out, outlen);
+ if (ret)
+ goto free;
+
+ for (i = 0; i < ARRAY_SIZE(names); i++) {
+ val = *(__be32 *)(out + stats_offsets[i]);
+ stats->value[i] = (u64)be32_to_cpu(val);
+ }
+free:
+ kvfree(out);
+ return ARRAY_SIZE(names);
+}
+
static void *mlx5_ib_add(struct mlx5_core_dev *mdev)
{
struct mlx5_ib_dev *dev;
@@ -2320,10 +2665,15 @@ static void *mlx5_ib_add(struct mlx5_core_dev *mdev)
dev->mdev = mdev;
+ dev->port = kcalloc(MLX5_CAP_GEN(mdev, num_ports), sizeof(*dev->port),
+ GFP_KERNEL);
+ if (!dev->port)
+ goto err_dealloc;
+
rwlock_init(&dev->roce.netdev_lock);
err = get_port_caps(dev);
if (err)
- goto err_dealloc;
+ goto err_free_port;
if (mlx5_use_mad_ifc(dev))
get_ext_port_caps(dev);
@@ -2418,6 +2768,7 @@ static void *mlx5_ib_add(struct mlx5_core_dev *mdev)
dev->ib_dev.map_mr_sg = mlx5_ib_map_mr_sg;
dev->ib_dev.check_mr_status = mlx5_ib_check_mr_status;
dev->ib_dev.get_port_immutable = mlx5_port_immutable;
+ dev->ib_dev.get_dev_fw_str = get_dev_fw_str;
if (mlx5_core_is_pf(mdev)) {
dev->ib_dev.get_vf_config = mlx5_ib_get_vf_config;
dev->ib_dev.set_vf_link_state = mlx5_ib_set_vf_link_state;
@@ -2425,6 +2776,8 @@ static void *mlx5_ib_add(struct mlx5_core_dev *mdev)
dev->ib_dev.set_vf_guid = mlx5_ib_set_vf_guid;
}
+ dev->ib_dev.disassociate_ucontext = mlx5_ib_disassociate_ucontext;
+
mlx5_ib_internal_fill_odp_caps(dev);
if (MLX5_CAP_GEN(mdev, imaicl)) {
@@ -2435,6 +2788,12 @@ static void *mlx5_ib_add(struct mlx5_core_dev *mdev)
(1ull << IB_USER_VERBS_CMD_DEALLOC_MW);
}
+ if (MLX5_CAP_GEN(dev->mdev, out_of_seq_cnt) &&
+ MLX5_CAP_GEN(dev->mdev, retransmission_q_counters)) {
+ dev->ib_dev.get_hw_stats = mlx5_ib_get_hw_stats;
+ dev->ib_dev.alloc_hw_stats = mlx5_ib_alloc_hw_stats;
+ }
+
if (MLX5_CAP_GEN(mdev, xrc)) {
dev->ib_dev.alloc_xrcd = mlx5_ib_alloc_xrcd;
dev->ib_dev.dealloc_xrcd = mlx5_ib_dealloc_xrcd;
@@ -2447,9 +2806,19 @@ static void *mlx5_ib_add(struct mlx5_core_dev *mdev)
IB_LINK_LAYER_ETHERNET) {
dev->ib_dev.create_flow = mlx5_ib_create_flow;
dev->ib_dev.destroy_flow = mlx5_ib_destroy_flow;
+ dev->ib_dev.create_wq = mlx5_ib_create_wq;
+ dev->ib_dev.modify_wq = mlx5_ib_modify_wq;
+ dev->ib_dev.destroy_wq = mlx5_ib_destroy_wq;
+ dev->ib_dev.create_rwq_ind_table = mlx5_ib_create_rwq_ind_table;
+ dev->ib_dev.destroy_rwq_ind_table = mlx5_ib_destroy_rwq_ind_table;
dev->ib_dev.uverbs_ex_cmd_mask |=
(1ull << IB_USER_VERBS_EX_CMD_CREATE_FLOW) |
- (1ull << IB_USER_VERBS_EX_CMD_DESTROY_FLOW);
+ (1ull << IB_USER_VERBS_EX_CMD_DESTROY_FLOW) |
+ (1ull << IB_USER_VERBS_EX_CMD_CREATE_WQ) |
+ (1ull << IB_USER_VERBS_EX_CMD_MODIFY_WQ) |
+ (1ull << IB_USER_VERBS_EX_CMD_DESTROY_WQ) |
+ (1ull << IB_USER_VERBS_EX_CMD_CREATE_RWQ_IND_TBL) |
+ (1ull << IB_USER_VERBS_EX_CMD_DESTROY_RWQ_IND_TBL);
}
err = init_node_data(dev);
if (err)
@@ -2457,6 +2826,8 @@ static void *mlx5_ib_add(struct mlx5_core_dev *mdev)
mutex_init(&dev->flow_db.lock);
mutex_init(&dev->cap_mask_mutex);
+ INIT_LIST_HEAD(&dev->qp_list);
+ spin_lock_init(&dev->reset_flow_resource_lock);
if (ll == IB_LINK_LAYER_ETHERNET) {
err = mlx5_enable_roce(dev);
@@ -2472,10 +2843,14 @@ static void *mlx5_ib_add(struct mlx5_core_dev *mdev)
if (err)
goto err_rsrc;
- err = ib_register_device(&dev->ib_dev, NULL);
+ err = mlx5_ib_alloc_q_counters(dev);
if (err)
goto err_odp;
+ err = ib_register_device(&dev->ib_dev, NULL);
+ if (err)
+ goto err_q_cnt;
+
err = create_umr_res(dev);
if (err)
goto err_dev;
@@ -2497,6 +2872,9 @@ err_umrc:
err_dev:
ib_unregister_device(&dev->ib_dev);
+err_q_cnt:
+ mlx5_ib_dealloc_q_counters(dev);
+
err_odp:
mlx5_ib_odp_remove_one(dev);
@@ -2507,6 +2885,9 @@ err_disable_roce:
if (ll == IB_LINK_LAYER_ETHERNET)
mlx5_disable_roce(dev);
+err_free_port:
+ kfree(dev->port);
+
err_dealloc:
ib_dealloc_device((struct ib_device *)dev);
@@ -2519,11 +2900,13 @@ static void mlx5_ib_remove(struct mlx5_core_dev *mdev, void *context)
enum rdma_link_layer ll = mlx5_ib_port_link_layer(&dev->ib_dev, 1);
ib_unregister_device(&dev->ib_dev);
+ mlx5_ib_dealloc_q_counters(dev);
destroy_umrc_res(dev);
mlx5_ib_odp_remove_one(dev);
destroy_dev_resources(&dev->devr);
if (ll == IB_LINK_LAYER_ETHERNET)
mlx5_disable_roce(dev);
+ kfree(dev->port);
ib_dealloc_device(&dev->ib_dev);
}
diff --git a/drivers/infiniband/hw/mlx5/mlx5_ib.h b/drivers/infiniband/hw/mlx5/mlx5_ib.h
index c4a9825828bc..372385d0f993 100644
--- a/drivers/infiniband/hw/mlx5/mlx5_ib.h
+++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h
@@ -105,6 +105,11 @@ enum {
MLX5_CQE_VERSION_V1,
};
+struct mlx5_ib_vma_private_data {
+ struct list_head list;
+ struct vm_area_struct *vma;
+};
+
struct mlx5_ib_ucontext {
struct ib_ucontext ibucontext;
struct list_head db_page_list;
@@ -116,6 +121,7 @@ struct mlx5_ib_ucontext {
u8 cqe_version;
/* Transport Domain number */
u32 tdn;
+ struct list_head vma_private_list;
};
static inline struct mlx5_ib_ucontext *to_mucontext(struct ib_ucontext *ibucontext)
@@ -217,12 +223,41 @@ struct mlx5_ib_wq {
void *qend;
};
+struct mlx5_ib_rwq {
+ struct ib_wq ibwq;
+ u32 rqn;
+ u32 rq_num_pas;
+ u32 log_rq_stride;
+ u32 log_rq_size;
+ u32 rq_page_offset;
+ u32 log_page_size;
+ struct ib_umem *umem;
+ size_t buf_size;
+ unsigned int page_shift;
+ int create_type;
+ struct mlx5_db db;
+ u32 user_index;
+ u32 wqe_count;
+ u32 wqe_shift;
+ int wq_sig;
+};
+
enum {
MLX5_QP_USER,
MLX5_QP_KERNEL,
MLX5_QP_EMPTY
};
+enum {
+ MLX5_WQ_USER,
+ MLX5_WQ_KERNEL
+};
+
+struct mlx5_ib_rwq_ind_table {
+ struct ib_rwq_ind_table ib_rwq_ind_tbl;
+ u32 rqtn;
+};
+
/*
* Connect-IB can trigger up to four concurrent pagefaults
* per-QP.
@@ -266,6 +301,10 @@ struct mlx5_ib_qp_trans {
u8 resp_depth;
};
+struct mlx5_ib_rss_qp {
+ u32 tirn;
+};
+
struct mlx5_ib_rq {
struct mlx5_ib_qp_base base;
struct mlx5_ib_wq *rq;
@@ -294,6 +333,7 @@ struct mlx5_ib_qp {
union {
struct mlx5_ib_qp_trans trans_qp;
struct mlx5_ib_raw_packet_qp raw_packet_qp;
+ struct mlx5_ib_rss_qp rss_qp;
};
struct mlx5_buf buf;
@@ -340,6 +380,9 @@ struct mlx5_ib_qp {
spinlock_t disable_page_faults_lock;
struct mlx5_ib_pfault pagefaults[MLX5_IB_PAGEFAULT_CONTEXTS];
#endif
+ struct list_head qps_list;
+ struct list_head cq_recv_list;
+ struct list_head cq_send_list;
};
struct mlx5_ib_cq_buf {
@@ -401,6 +444,8 @@ struct mlx5_ib_cq {
struct mlx5_ib_cq_buf *resize_buf;
struct ib_umem *resize_umem;
int cqe_size;
+ struct list_head list_send_qp;
+ struct list_head list_recv_qp;
u32 create_flags;
struct list_head wc_list;
enum ib_cq_notify_flags notify_flags;
@@ -546,6 +591,10 @@ struct mlx5_ib_resources {
struct mutex mutex;
};
+struct mlx5_ib_port {
+ u16 q_cnt_id;
+};
+
struct mlx5_roce {
/* Protect mlx5_ib_get_netdev from invoking dev_hold() with a NULL
* netdev pointer
@@ -581,6 +630,11 @@ struct mlx5_ib_dev {
struct srcu_struct mr_srcu;
#endif
struct mlx5_ib_flow_db flow_db;
+ /* protect resources needed as part of reset flow */
+ spinlock_t reset_flow_resource_lock;
+ struct list_head qp_list;
+ /* Array with num_ports elements */
+ struct mlx5_ib_port *port;
};
static inline struct mlx5_ib_cq *to_mibcq(struct mlx5_core_cq *mcq)
@@ -628,6 +682,16 @@ static inline struct mlx5_ib_qp *to_mqp(struct ib_qp *ibqp)
return container_of(ibqp, struct mlx5_ib_qp, ibqp);
}
+static inline struct mlx5_ib_rwq *to_mrwq(struct ib_wq *ibwq)
+{
+ return container_of(ibwq, struct mlx5_ib_rwq, ibwq);
+}
+
+static inline struct mlx5_ib_rwq_ind_table *to_mrwq_ind_table(struct ib_rwq_ind_table *ib_rwq_ind_tbl)
+{
+ return container_of(ib_rwq_ind_tbl, struct mlx5_ib_rwq_ind_table, ib_rwq_ind_tbl);
+}
+
static inline struct mlx5_ib_srq *to_mibsrq(struct mlx5_core_srq *msrq)
{
return container_of(msrq, struct mlx5_ib_srq, msrq);
@@ -762,6 +826,16 @@ int mlx5_mr_cache_cleanup(struct mlx5_ib_dev *dev);
int mlx5_mr_ib_cont_pages(struct ib_umem *umem, u64 addr, int *count, int *shift);
int mlx5_ib_check_mr_status(struct ib_mr *ibmr, u32 check_mask,
struct ib_mr_status *mr_status);
+struct ib_wq *mlx5_ib_create_wq(struct ib_pd *pd,
+ struct ib_wq_init_attr *init_attr,
+ struct ib_udata *udata);
+int mlx5_ib_destroy_wq(struct ib_wq *wq);
+int mlx5_ib_modify_wq(struct ib_wq *wq, struct ib_wq_attr *wq_attr,
+ u32 wq_attr_mask, struct ib_udata *udata);
+struct ib_rwq_ind_table *mlx5_ib_create_rwq_ind_table(struct ib_device *device,
+ struct ib_rwq_ind_table_init_attr *init_attr,
+ struct ib_udata *udata);
+int mlx5_ib_destroy_rwq_ind_table(struct ib_rwq_ind_table *wq_ind_table);
#ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
extern struct workqueue_struct *mlx5_ib_page_fault_wq;
diff --git a/drivers/infiniband/hw/mlx5/mr.c b/drivers/infiniband/hw/mlx5/mr.c
index 8cf2ce50511f..4b021305c321 100644
--- a/drivers/infiniband/hw/mlx5/mr.c
+++ b/drivers/infiniband/hw/mlx5/mr.c
@@ -1193,12 +1193,16 @@ error:
static int unreg_umr(struct mlx5_ib_dev *dev, struct mlx5_ib_mr *mr)
{
+ struct mlx5_core_dev *mdev = dev->mdev;
struct umr_common *umrc = &dev->umrc;
struct mlx5_ib_umr_context umr_context;
struct mlx5_umr_wr umrwr = {};
struct ib_send_wr *bad;
int err;
+ if (mdev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR)
+ return 0;
+
mlx5_ib_init_umr_context(&umr_context);
umrwr.wr.wr_cqe = &umr_context.cqe;
diff --git a/drivers/infiniband/hw/mlx5/qp.c b/drivers/infiniband/hw/mlx5/qp.c
index ce0a7ab35a22..0dd7d93cac95 100644
--- a/drivers/infiniband/hw/mlx5/qp.c
+++ b/drivers/infiniband/hw/mlx5/qp.c
@@ -77,6 +77,10 @@ struct mlx5_wqe_eth_pad {
u8 rsvd0[16];
};
+static void get_cqs(enum ib_qp_type qp_type,
+ struct ib_cq *ib_send_cq, struct ib_cq *ib_recv_cq,
+ struct mlx5_ib_cq **send_cq, struct mlx5_ib_cq **recv_cq);
+
static int is_qp0(enum ib_qp_type qp_type)
{
return qp_type == IB_QPT_SMI;
@@ -609,6 +613,11 @@ static int to_mlx5_st(enum ib_qp_type type)
}
}
+static void mlx5_ib_lock_cqs(struct mlx5_ib_cq *send_cq,
+ struct mlx5_ib_cq *recv_cq);
+static void mlx5_ib_unlock_cqs(struct mlx5_ib_cq *send_cq,
+ struct mlx5_ib_cq *recv_cq);
+
static int uuarn_to_uar_index(struct mlx5_uuar_info *uuari, int uuarn)
{
return uuari->uars[uuarn / MLX5_BF_REGS_PER_PAGE].index;
@@ -649,6 +658,71 @@ err_umem:
return err;
}
+static void destroy_user_rq(struct ib_pd *pd, struct mlx5_ib_rwq *rwq)
+{
+ struct mlx5_ib_ucontext *context;
+
+ context = to_mucontext(pd->uobject->context);
+ mlx5_ib_db_unmap_user(context, &rwq->db);
+ if (rwq->umem)
+ ib_umem_release(rwq->umem);
+}
+
+static int create_user_rq(struct mlx5_ib_dev *dev, struct ib_pd *pd,
+ struct mlx5_ib_rwq *rwq,
+ struct mlx5_ib_create_wq *ucmd)
+{
+ struct mlx5_ib_ucontext *context;
+ int page_shift = 0;
+ int npages;
+ u32 offset = 0;
+ int ncont = 0;
+ int err;
+
+ if (!ucmd->buf_addr)
+ return -EINVAL;
+
+ context = to_mucontext(pd->uobject->context);
+ rwq->umem = ib_umem_get(pd->uobject->context, ucmd->buf_addr,
+ rwq->buf_size, 0, 0);
+ if (IS_ERR(rwq->umem)) {
+ mlx5_ib_dbg(dev, "umem_get failed\n");
+ err = PTR_ERR(rwq->umem);
+ return err;
+ }
+
+ mlx5_ib_cont_pages(rwq->umem, ucmd->buf_addr, &npages, &page_shift,
+ &ncont, NULL);
+ err = mlx5_ib_get_buf_offset(ucmd->buf_addr, page_shift,
+ &rwq->rq_page_offset);
+ if (err) {
+ mlx5_ib_warn(dev, "bad offset\n");
+ goto err_umem;
+ }
+
+ rwq->rq_num_pas = ncont;
+ rwq->page_shift = page_shift;
+ rwq->log_page_size = page_shift - MLX5_ADAPTER_PAGE_SHIFT;
+ rwq->wq_sig = !!(ucmd->flags & MLX5_WQ_FLAG_SIGNATURE);
+
+ mlx5_ib_dbg(dev, "addr 0x%llx, size %zd, npages %d, page_shift %d, ncont %d, offset %d\n",
+ (unsigned long long)ucmd->buf_addr, rwq->buf_size,
+ npages, page_shift, ncont, offset);
+
+ err = mlx5_ib_db_map_user(context, ucmd->db_addr, &rwq->db);
+ if (err) {
+ mlx5_ib_dbg(dev, "map failed\n");
+ goto err_umem;
+ }
+
+ rwq->create_type = MLX5_WQ_USER;
+ return 0;
+
+err_umem:
+ ib_umem_release(rwq->umem);
+ return err;
+}
+
static int create_user_qp(struct mlx5_ib_dev *dev, struct ib_pd *pd,
struct mlx5_ib_qp *qp, struct ib_udata *udata,
struct ib_qp_init_attr *attr,
@@ -1201,6 +1275,187 @@ static void raw_packet_qp_copy_info(struct mlx5_ib_qp *qp,
rq->doorbell = &qp->db;
}
+static void destroy_rss_raw_qp_tir(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp)
+{
+ mlx5_core_destroy_tir(dev->mdev, qp->rss_qp.tirn);
+}
+
+static int create_rss_raw_qp_tir(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
+ struct ib_pd *pd,
+ struct ib_qp_init_attr *init_attr,
+ struct ib_udata *udata)
+{
+ struct ib_uobject *uobj = pd->uobject;
+ struct ib_ucontext *ucontext = uobj->context;
+ struct mlx5_ib_ucontext *mucontext = to_mucontext(ucontext);
+ struct mlx5_ib_create_qp_resp resp = {};
+ int inlen;
+ int err;
+ u32 *in;
+ void *tirc;
+ void *hfso;
+ u32 selected_fields = 0;
+ size_t min_resp_len;
+ u32 tdn = mucontext->tdn;
+ struct mlx5_ib_create_qp_rss ucmd = {};
+ size_t required_cmd_sz;
+
+ if (init_attr->qp_type != IB_QPT_RAW_PACKET)
+ return -EOPNOTSUPP;
+
+ if (init_attr->create_flags || init_attr->send_cq)
+ return -EINVAL;
+
+ min_resp_len = offsetof(typeof(resp), uuar_index) + sizeof(resp.uuar_index);
+ if (udata->outlen < min_resp_len)
+ return -EINVAL;
+
+ required_cmd_sz = offsetof(typeof(ucmd), reserved1) + sizeof(ucmd.reserved1);
+ if (udata->inlen < required_cmd_sz) {
+ mlx5_ib_dbg(dev, "invalid inlen\n");
+ return -EINVAL;
+ }
+
+ if (udata->inlen > sizeof(ucmd) &&
+ !ib_is_udata_cleared(udata, sizeof(ucmd),
+ udata->inlen - sizeof(ucmd))) {
+ mlx5_ib_dbg(dev, "inlen is not supported\n");
+ return -EOPNOTSUPP;
+ }
+
+ if (ib_copy_from_udata(&ucmd, udata, min(sizeof(ucmd), udata->inlen))) {
+ mlx5_ib_dbg(dev, "copy failed\n");
+ return -EFAULT;
+ }
+
+ if (ucmd.comp_mask) {
+ mlx5_ib_dbg(dev, "invalid comp mask\n");
+ return -EOPNOTSUPP;
+ }
+
+ if (memchr_inv(ucmd.reserved, 0, sizeof(ucmd.reserved)) || ucmd.reserved1) {
+ mlx5_ib_dbg(dev, "invalid reserved\n");
+ return -EOPNOTSUPP;
+ }
+
+ err = ib_copy_to_udata(udata, &resp, min_resp_len);
+ if (err) {
+ mlx5_ib_dbg(dev, "copy failed\n");
+ return -EINVAL;
+ }
+
+ inlen = MLX5_ST_SZ_BYTES(create_tir_in);
+ in = mlx5_vzalloc(inlen);
+ if (!in)
+ return -ENOMEM;
+
+ tirc = MLX5_ADDR_OF(create_tir_in, in, ctx);
+ MLX5_SET(tirc, tirc, disp_type,
+ MLX5_TIRC_DISP_TYPE_INDIRECT);
+ MLX5_SET(tirc, tirc, indirect_table,
+ init_attr->rwq_ind_tbl->ind_tbl_num);
+ MLX5_SET(tirc, tirc, transport_domain, tdn);
+
+ hfso = MLX5_ADDR_OF(tirc, tirc, rx_hash_field_selector_outer);
+ switch (ucmd.rx_hash_function) {
+ case MLX5_RX_HASH_FUNC_TOEPLITZ:
+ {
+ void *rss_key = MLX5_ADDR_OF(tirc, tirc, rx_hash_toeplitz_key);
+ size_t len = MLX5_FLD_SZ_BYTES(tirc, rx_hash_toeplitz_key);
+
+ if (len != ucmd.rx_key_len) {
+ err = -EINVAL;
+ goto err;
+ }
+
+ MLX5_SET(tirc, tirc, rx_hash_fn, MLX5_RX_HASH_FN_TOEPLITZ);
+ MLX5_SET(tirc, tirc, rx_hash_symmetric, 1);
+ memcpy(rss_key, ucmd.rx_hash_key, len);
+ break;
+ }
+ default:
+ err = -EOPNOTSUPP;
+ goto err;
+ }
+
+ if (!ucmd.rx_hash_fields_mask) {
+ /* special case when this TIR serves as steering entry without hashing */
+ if (!init_attr->rwq_ind_tbl->log_ind_tbl_size)
+ goto create_tir;
+ err = -EINVAL;
+ goto err;
+ }
+
+ if (((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV4) ||
+ (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV4)) &&
+ ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV6) ||
+ (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV6))) {
+ err = -EINVAL;
+ goto err;
+ }
+
+ /* If none of IPV4 & IPV6 SRC/DST was set - this bit field is ignored */
+ if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV4) ||
+ (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV4))
+ MLX5_SET(rx_hash_field_select, hfso, l3_prot_type,
+ MLX5_L3_PROT_TYPE_IPV4);
+ else if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV6) ||
+ (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV6))
+ MLX5_SET(rx_hash_field_select, hfso, l3_prot_type,
+ MLX5_L3_PROT_TYPE_IPV6);
+
+ if (((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_TCP) ||
+ (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_TCP)) &&
+ ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_UDP) ||
+ (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_UDP))) {
+ err = -EINVAL;
+ goto err;
+ }
+
+ /* If none of TCP & UDP SRC/DST was set - this bit field is ignored */
+ if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_TCP) ||
+ (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_TCP))
+ MLX5_SET(rx_hash_field_select, hfso, l4_prot_type,
+ MLX5_L4_PROT_TYPE_TCP);
+ else if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_UDP) ||
+ (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_UDP))
+ MLX5_SET(rx_hash_field_select, hfso, l4_prot_type,
+ MLX5_L4_PROT_TYPE_UDP);
+
+ if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV4) ||
+ (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV6))
+ selected_fields |= MLX5_HASH_FIELD_SEL_SRC_IP;
+
+ if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV4) ||
+ (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV6))
+ selected_fields |= MLX5_HASH_FIELD_SEL_DST_IP;
+
+ if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_TCP) ||
+ (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_UDP))
+ selected_fields |= MLX5_HASH_FIELD_SEL_L4_SPORT;
+
+ if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_TCP) ||
+ (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_UDP))
+ selected_fields |= MLX5_HASH_FIELD_SEL_L4_DPORT;
+
+ MLX5_SET(rx_hash_field_select, hfso, selected_fields, selected_fields);
+
+create_tir:
+ err = mlx5_core_create_tir(dev->mdev, in, inlen, &qp->rss_qp.tirn);
+
+ if (err)
+ goto err;
+
+ kvfree(in);
+ /* qpn is reserved for that QP */
+ qp->trans_qp.base.mqp.qpn = 0;
+ return 0;
+
+err:
+ kvfree(in);
+ return err;
+}
+
static int create_qp_common(struct mlx5_ib_dev *dev, struct ib_pd *pd,
struct ib_qp_init_attr *init_attr,
struct ib_udata *udata, struct mlx5_ib_qp *qp)
@@ -1211,6 +1466,9 @@ static int create_qp_common(struct mlx5_ib_dev *dev, struct ib_pd *pd,
struct mlx5_ib_create_qp_resp resp;
struct mlx5_create_qp_mbox_in *in;
struct mlx5_ib_create_qp ucmd;
+ struct mlx5_ib_cq *send_cq;
+ struct mlx5_ib_cq *recv_cq;
+ unsigned long flags;
int inlen = sizeof(*in);
int err;
u32 uidx = MLX5_IB_DEFAULT_UIDX;
@@ -1227,6 +1485,14 @@ static int create_qp_common(struct mlx5_ib_dev *dev, struct ib_pd *pd,
spin_lock_init(&qp->sq.lock);
spin_lock_init(&qp->rq.lock);
+ if (init_attr->rwq_ind_tbl) {
+ if (!udata)
+ return -ENOSYS;
+
+ err = create_rss_raw_qp_tir(dev, qp, pd, init_attr, udata);
+ return err;
+ }
+
if (init_attr->create_flags & IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK) {
if (!MLX5_CAP_GEN(mdev, block_lb_mc)) {
mlx5_ib_dbg(dev, "block multicast loopback isn't supported\n");
@@ -1460,6 +1726,23 @@ static int create_qp_common(struct mlx5_ib_dev *dev, struct ib_pd *pd,
base->container_mibqp = qp;
base->mqp.event = mlx5_ib_qp_event;
+ get_cqs(init_attr->qp_type, init_attr->send_cq, init_attr->recv_cq,
+ &send_cq, &recv_cq);
+ spin_lock_irqsave(&dev->reset_flow_resource_lock, flags);
+ mlx5_ib_lock_cqs(send_cq, recv_cq);
+ /* Maintain device to QPs access, needed for further handling via reset
+ * flow
+ */
+ list_add_tail(&qp->qps_list, &dev->qp_list);
+ /* Maintain CQ to QPs access, needed for further handling via reset flow
+ */
+ if (send_cq)
+ list_add_tail(&qp->cq_send_list, &send_cq->list_send_qp);
+ if (recv_cq)
+ list_add_tail(&qp->cq_recv_list, &recv_cq->list_recv_qp);
+ mlx5_ib_unlock_cqs(send_cq, recv_cq);
+ spin_unlock_irqrestore(&dev->reset_flow_resource_lock, flags);
+
return 0;
err_create:
@@ -1478,23 +1761,23 @@ static void mlx5_ib_lock_cqs(struct mlx5_ib_cq *send_cq, struct mlx5_ib_cq *recv
if (send_cq) {
if (recv_cq) {
if (send_cq->mcq.cqn < recv_cq->mcq.cqn) {
- spin_lock_irq(&send_cq->lock);
+ spin_lock(&send_cq->lock);
spin_lock_nested(&recv_cq->lock,
SINGLE_DEPTH_NESTING);
} else if (send_cq->mcq.cqn == recv_cq->mcq.cqn) {
- spin_lock_irq(&send_cq->lock);
+ spin_lock(&send_cq->lock);
__acquire(&recv_cq->lock);
} else {
- spin_lock_irq(&recv_cq->lock);
+ spin_lock(&recv_cq->lock);
spin_lock_nested(&send_cq->lock,
SINGLE_DEPTH_NESTING);
}
} else {
- spin_lock_irq(&send_cq->lock);
+ spin_lock(&send_cq->lock);
__acquire(&recv_cq->lock);
}
} else if (recv_cq) {
- spin_lock_irq(&recv_cq->lock);
+ spin_lock(&recv_cq->lock);
__acquire(&send_cq->lock);
} else {
__acquire(&send_cq->lock);
@@ -1509,21 +1792,21 @@ static void mlx5_ib_unlock_cqs(struct mlx5_ib_cq *send_cq, struct mlx5_ib_cq *re
if (recv_cq) {
if (send_cq->mcq.cqn < recv_cq->mcq.cqn) {
spin_unlock(&recv_cq->lock);
- spin_unlock_irq(&send_cq->lock);
+ spin_unlock(&send_cq->lock);
} else if (send_cq->mcq.cqn == recv_cq->mcq.cqn) {
__release(&recv_cq->lock);
- spin_unlock_irq(&send_cq->lock);
+ spin_unlock(&send_cq->lock);
} else {
spin_unlock(&send_cq->lock);
- spin_unlock_irq(&recv_cq->lock);
+ spin_unlock(&recv_cq->lock);
}
} else {
__release(&recv_cq->lock);
- spin_unlock_irq(&send_cq->lock);
+ spin_unlock(&send_cq->lock);
}
} else if (recv_cq) {
__release(&send_cq->lock);
- spin_unlock_irq(&recv_cq->lock);
+ spin_unlock(&recv_cq->lock);
} else {
__release(&recv_cq->lock);
__release(&send_cq->lock);
@@ -1535,17 +1818,18 @@ static struct mlx5_ib_pd *get_pd(struct mlx5_ib_qp *qp)
return to_mpd(qp->ibqp.pd);
}
-static void get_cqs(struct mlx5_ib_qp *qp,
+static void get_cqs(enum ib_qp_type qp_type,
+ struct ib_cq *ib_send_cq, struct ib_cq *ib_recv_cq,
struct mlx5_ib_cq **send_cq, struct mlx5_ib_cq **recv_cq)
{
- switch (qp->ibqp.qp_type) {
+ switch (qp_type) {
case IB_QPT_XRC_TGT:
*send_cq = NULL;
*recv_cq = NULL;
break;
case MLX5_IB_QPT_REG_UMR:
case IB_QPT_XRC_INI:
- *send_cq = to_mcq(qp->ibqp.send_cq);
+ *send_cq = ib_send_cq ? to_mcq(ib_send_cq) : NULL;
*recv_cq = NULL;
break;
@@ -1557,8 +1841,8 @@ static void get_cqs(struct mlx5_ib_qp *qp,
case IB_QPT_RAW_IPV6:
case IB_QPT_RAW_ETHERTYPE:
case IB_QPT_RAW_PACKET:
- *send_cq = to_mcq(qp->ibqp.send_cq);
- *recv_cq = to_mcq(qp->ibqp.recv_cq);
+ *send_cq = ib_send_cq ? to_mcq(ib_send_cq) : NULL;
+ *recv_cq = ib_recv_cq ? to_mcq(ib_recv_cq) : NULL;
break;
case IB_QPT_MAX:
@@ -1577,8 +1861,14 @@ static void destroy_qp_common(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp)
struct mlx5_ib_cq *send_cq, *recv_cq;
struct mlx5_ib_qp_base *base = &qp->trans_qp.base;
struct mlx5_modify_qp_mbox_in *in;
+ unsigned long flags;
int err;
+ if (qp->ibqp.rwq_ind_tbl) {
+ destroy_rss_raw_qp_tir(dev, qp);
+ return;
+ }
+
base = qp->ibqp.qp_type == IB_QPT_RAW_PACKET ?
&qp->raw_packet_qp.rq.base :
&qp->trans_qp.base;
@@ -1602,17 +1892,28 @@ static void destroy_qp_common(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp)
base->mqp.qpn);
}
- get_cqs(qp, &send_cq, &recv_cq);
+ get_cqs(qp->ibqp.qp_type, qp->ibqp.send_cq, qp->ibqp.recv_cq,
+ &send_cq, &recv_cq);
+
+ spin_lock_irqsave(&dev->reset_flow_resource_lock, flags);
+ mlx5_ib_lock_cqs(send_cq, recv_cq);
+ /* del from lists under both locks above to protect reset flow paths */
+ list_del(&qp->qps_list);
+ if (send_cq)
+ list_del(&qp->cq_send_list);
+
+ if (recv_cq)
+ list_del(&qp->cq_recv_list);
if (qp->create_type == MLX5_QP_KERNEL) {
- mlx5_ib_lock_cqs(send_cq, recv_cq);
__mlx5_ib_cq_clean(recv_cq, base->mqp.qpn,
qp->ibqp.srq ? to_msrq(qp->ibqp.srq) : NULL);
if (send_cq != recv_cq)
__mlx5_ib_cq_clean(send_cq, base->mqp.qpn,
NULL);
- mlx5_ib_unlock_cqs(send_cq, recv_cq);
}
+ mlx5_ib_unlock_cqs(send_cq, recv_cq);
+ spin_unlock_irqrestore(&dev->reset_flow_resource_lock, flags);
if (qp->ibqp.qp_type == IB_QPT_RAW_PACKET) {
destroy_raw_packet_qp(dev, qp);
@@ -2300,7 +2601,8 @@ static int __mlx5_ib_modify_qp(struct ib_qp *ibqp,
}
pd = get_pd(qp);
- get_cqs(qp, &send_cq, &recv_cq);
+ get_cqs(qp->ibqp.qp_type, qp->ibqp.send_cq, qp->ibqp.recv_cq,
+ &send_cq, &recv_cq);
context->flags_pd = cpu_to_be32(pd ? pd->pdn : to_mpd(dev->devr.p0)->pdn);
context->cqn_send = send_cq ? cpu_to_be32(send_cq->mcq.cqn) : 0;
@@ -2349,6 +2651,15 @@ static int __mlx5_ib_modify_qp(struct ib_qp *ibqp,
else
sqd_event = 0;
+ if (cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) {
+ u8 port_num = (attr_mask & IB_QP_PORT ? attr->port_num :
+ qp->port) - 1;
+ struct mlx5_ib_port *mibport = &dev->port[port_num];
+
+ context->qp_counter_set_usr_page |=
+ cpu_to_be32((u32)(mibport->q_cnt_id) << 24);
+ }
+
if (!ibqp->uobject && cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT)
context->sq_crq_size |= cpu_to_be16(1 << 4);
@@ -2439,6 +2750,9 @@ int mlx5_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
int port;
enum rdma_link_layer ll = IB_LINK_LAYER_UNSPECIFIED;
+ if (ibqp->rwq_ind_tbl)
+ return -ENOSYS;
+
if (unlikely(ibqp->qp_type == IB_QPT_GSI))
return mlx5_ib_gsi_modify_qp(ibqp, attr, attr_mask);
@@ -3397,6 +3711,7 @@ int mlx5_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
{
struct mlx5_wqe_ctrl_seg *ctrl = NULL; /* compiler warning */
struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
+ struct mlx5_core_dev *mdev = dev->mdev;
struct mlx5_ib_qp *qp;
struct mlx5_ib_mr *mr;
struct mlx5_wqe_data_seg *dpseg;
@@ -3424,6 +3739,13 @@ int mlx5_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
spin_lock_irqsave(&qp->sq.lock, flags);
+ if (mdev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR) {
+ err = -EIO;
+ *bad_wr = wr;
+ nreq = 0;
+ goto out;
+ }
+
for (nreq = 0; wr; nreq++, wr = wr->next) {
if (unlikely(wr->opcode >= ARRAY_SIZE(mlx5_ib_opcode))) {
mlx5_ib_warn(dev, "\n");
@@ -3725,6 +4047,8 @@ int mlx5_ib_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
struct mlx5_ib_qp *qp = to_mqp(ibqp);
struct mlx5_wqe_data_seg *scat;
struct mlx5_rwqe_sig *sig;
+ struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
+ struct mlx5_core_dev *mdev = dev->mdev;
unsigned long flags;
int err = 0;
int nreq;
@@ -3736,6 +4060,13 @@ int mlx5_ib_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
spin_lock_irqsave(&qp->rq.lock, flags);
+ if (mdev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR) {
+ err = -EIO;
+ *bad_wr = wr;
+ nreq = 0;
+ goto out;
+ }
+
ind = qp->rq.head & (qp->rq.wqe_cnt - 1);
for (nreq = 0; wr; nreq++, wr = wr->next) {
@@ -4055,6 +4386,9 @@ int mlx5_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr,
int err = 0;
u8 raw_packet_qp_state;
+ if (ibqp->rwq_ind_tbl)
+ return -ENOSYS;
+
if (unlikely(ibqp->qp_type == IB_QPT_GSI))
return mlx5_ib_gsi_query_qp(ibqp, qp_attr, qp_attr_mask,
qp_init_attr);
@@ -4164,3 +4498,322 @@ int mlx5_ib_dealloc_xrcd(struct ib_xrcd *xrcd)
return 0;
}
+
+static int create_rq(struct mlx5_ib_rwq *rwq, struct ib_pd *pd,
+ struct ib_wq_init_attr *init_attr)
+{
+ struct mlx5_ib_dev *dev;
+ __be64 *rq_pas0;
+ void *in;
+ void *rqc;
+ void *wq;
+ int inlen;
+ int err;
+
+ dev = to_mdev(pd->device);
+
+ inlen = MLX5_ST_SZ_BYTES(create_rq_in) + sizeof(u64) * rwq->rq_num_pas;
+ in = mlx5_vzalloc(inlen);
+ if (!in)
+ return -ENOMEM;
+
+ rqc = MLX5_ADDR_OF(create_rq_in, in, ctx);
+ MLX5_SET(rqc, rqc, mem_rq_type,
+ MLX5_RQC_MEM_RQ_TYPE_MEMORY_RQ_INLINE);
+ MLX5_SET(rqc, rqc, user_index, rwq->user_index);
+ MLX5_SET(rqc, rqc, cqn, to_mcq(init_attr->cq)->mcq.cqn);
+ MLX5_SET(rqc, rqc, state, MLX5_RQC_STATE_RST);
+ MLX5_SET(rqc, rqc, flush_in_error_en, 1);
+ wq = MLX5_ADDR_OF(rqc, rqc, wq);
+ MLX5_SET(wq, wq, wq_type, MLX5_WQ_TYPE_CYCLIC);
+ MLX5_SET(wq, wq, end_padding_mode, MLX5_WQ_END_PAD_MODE_ALIGN);
+ MLX5_SET(wq, wq, log_wq_stride, rwq->log_rq_stride);
+ MLX5_SET(wq, wq, log_wq_sz, rwq->log_rq_size);
+ MLX5_SET(wq, wq, pd, to_mpd(pd)->pdn);
+ MLX5_SET(wq, wq, page_offset, rwq->rq_page_offset);
+ MLX5_SET(wq, wq, log_wq_pg_sz, rwq->log_page_size);
+ MLX5_SET(wq, wq, wq_signature, rwq->wq_sig);
+ MLX5_SET64(wq, wq, dbr_addr, rwq->db.dma);
+ rq_pas0 = (__be64 *)MLX5_ADDR_OF(wq, wq, pas);
+ mlx5_ib_populate_pas(dev, rwq->umem, rwq->page_shift, rq_pas0, 0);
+ err = mlx5_core_create_rq(dev->mdev, in, inlen, &rwq->rqn);
+ kvfree(in);
+ return err;
+}
+
+static int set_user_rq_size(struct mlx5_ib_dev *dev,
+ struct ib_wq_init_attr *wq_init_attr,
+ struct mlx5_ib_create_wq *ucmd,
+ struct mlx5_ib_rwq *rwq)
+{
+ /* Sanity check RQ size before proceeding */
+ if (wq_init_attr->max_wr > (1 << MLX5_CAP_GEN(dev->mdev, log_max_wq_sz)))
+ return -EINVAL;
+
+ if (!ucmd->rq_wqe_count)
+ return -EINVAL;
+
+ rwq->wqe_count = ucmd->rq_wqe_count;
+ rwq->wqe_shift = ucmd->rq_wqe_shift;
+ rwq->buf_size = (rwq->wqe_count << rwq->wqe_shift);
+ rwq->log_rq_stride = rwq->wqe_shift;
+ rwq->log_rq_size = ilog2(rwq->wqe_count);
+ return 0;
+}
+
+static int prepare_user_rq(struct ib_pd *pd,
+ struct ib_wq_init_attr *init_attr,
+ struct ib_udata *udata,
+ struct mlx5_ib_rwq *rwq)
+{
+ struct mlx5_ib_dev *dev = to_mdev(pd->device);
+ struct mlx5_ib_create_wq ucmd = {};
+ int err;
+ size_t required_cmd_sz;
+
+ required_cmd_sz = offsetof(typeof(ucmd), reserved) + sizeof(ucmd.reserved);
+ if (udata->inlen < required_cmd_sz) {
+ mlx5_ib_dbg(dev, "invalid inlen\n");
+ return -EINVAL;
+ }
+
+ if (udata->inlen > sizeof(ucmd) &&
+ !ib_is_udata_cleared(udata, sizeof(ucmd),
+ udata->inlen - sizeof(ucmd))) {
+ mlx5_ib_dbg(dev, "inlen is not supported\n");
+ return -EOPNOTSUPP;
+ }
+
+ if (ib_copy_from_udata(&ucmd, udata, min(sizeof(ucmd), udata->inlen))) {
+ mlx5_ib_dbg(dev, "copy failed\n");
+ return -EFAULT;
+ }
+
+ if (ucmd.comp_mask) {
+ mlx5_ib_dbg(dev, "invalid comp mask\n");
+ return -EOPNOTSUPP;
+ }
+
+ if (ucmd.reserved) {
+ mlx5_ib_dbg(dev, "invalid reserved\n");
+ return -EOPNOTSUPP;
+ }
+
+ err = set_user_rq_size(dev, init_attr, &ucmd, rwq);
+ if (err) {
+ mlx5_ib_dbg(dev, "err %d\n", err);
+ return err;
+ }
+
+ err = create_user_rq(dev, pd, rwq, &ucmd);
+ if (err) {
+ mlx5_ib_dbg(dev, "err %d\n", err);
+ if (err)
+ return err;
+ }
+
+ rwq->user_index = ucmd.user_index;
+ return 0;
+}
+
+struct ib_wq *mlx5_ib_create_wq(struct ib_pd *pd,
+ struct ib_wq_init_attr *init_attr,
+ struct ib_udata *udata)
+{
+ struct mlx5_ib_dev *dev;
+ struct mlx5_ib_rwq *rwq;
+ struct mlx5_ib_create_wq_resp resp = {};
+ size_t min_resp_len;
+ int err;
+
+ if (!udata)
+ return ERR_PTR(-ENOSYS);
+
+ min_resp_len = offsetof(typeof(resp), reserved) + sizeof(resp.reserved);
+ if (udata->outlen && udata->outlen < min_resp_len)
+ return ERR_PTR(-EINVAL);
+
+ dev = to_mdev(pd->device);
+ switch (init_attr->wq_type) {
+ case IB_WQT_RQ:
+ rwq = kzalloc(sizeof(*rwq), GFP_KERNEL);
+ if (!rwq)
+ return ERR_PTR(-ENOMEM);
+ err = prepare_user_rq(pd, init_attr, udata, rwq);
+ if (err)
+ goto err;
+ err = create_rq(rwq, pd, init_attr);
+ if (err)
+ goto err_user_rq;
+ break;
+ default:
+ mlx5_ib_dbg(dev, "unsupported wq type %d\n",
+ init_attr->wq_type);
+ return ERR_PTR(-EINVAL);
+ }
+
+ rwq->ibwq.wq_num = rwq->rqn;
+ rwq->ibwq.state = IB_WQS_RESET;
+ if (udata->outlen) {
+ resp.response_length = offsetof(typeof(resp), response_length) +
+ sizeof(resp.response_length);
+ err = ib_copy_to_udata(udata, &resp, resp.response_length);
+ if (err)
+ goto err_copy;
+ }
+
+ return &rwq->ibwq;
+
+err_copy:
+ mlx5_core_destroy_rq(dev->mdev, rwq->rqn);
+err_user_rq:
+ destroy_user_rq(pd, rwq);
+err:
+ kfree(rwq);
+ return ERR_PTR(err);
+}
+
+int mlx5_ib_destroy_wq(struct ib_wq *wq)
+{
+ struct mlx5_ib_dev *dev = to_mdev(wq->device);
+ struct mlx5_ib_rwq *rwq = to_mrwq(wq);
+
+ mlx5_core_destroy_rq(dev->mdev, rwq->rqn);
+ destroy_user_rq(wq->pd, rwq);
+ kfree(rwq);
+
+ return 0;
+}
+
+struct ib_rwq_ind_table *mlx5_ib_create_rwq_ind_table(struct ib_device *device,
+ struct ib_rwq_ind_table_init_attr *init_attr,
+ struct ib_udata *udata)
+{
+ struct mlx5_ib_dev *dev = to_mdev(device);
+ struct mlx5_ib_rwq_ind_table *rwq_ind_tbl;
+ int sz = 1 << init_attr->log_ind_tbl_size;
+ struct mlx5_ib_create_rwq_ind_tbl_resp resp = {};
+ size_t min_resp_len;
+ int inlen;
+ int err;
+ int i;
+ u32 *in;
+ void *rqtc;
+
+ if (udata->inlen > 0 &&
+ !ib_is_udata_cleared(udata, 0,
+ udata->inlen))
+ return ERR_PTR(-EOPNOTSUPP);
+
+ min_resp_len = offsetof(typeof(resp), reserved) + sizeof(resp.reserved);
+ if (udata->outlen && udata->outlen < min_resp_len)
+ return ERR_PTR(-EINVAL);
+
+ rwq_ind_tbl = kzalloc(sizeof(*rwq_ind_tbl), GFP_KERNEL);
+ if (!rwq_ind_tbl)
+ return ERR_PTR(-ENOMEM);
+
+ inlen = MLX5_ST_SZ_BYTES(create_rqt_in) + sizeof(u32) * sz;
+ in = mlx5_vzalloc(inlen);
+ if (!in) {
+ err = -ENOMEM;
+ goto err;
+ }
+
+ rqtc = MLX5_ADDR_OF(create_rqt_in, in, rqt_context);
+
+ MLX5_SET(rqtc, rqtc, rqt_actual_size, sz);
+ MLX5_SET(rqtc, rqtc, rqt_max_size, sz);
+
+ for (i = 0; i < sz; i++)
+ MLX5_SET(rqtc, rqtc, rq_num[i], init_attr->ind_tbl[i]->wq_num);
+
+ err = mlx5_core_create_rqt(dev->mdev, in, inlen, &rwq_ind_tbl->rqtn);
+ kvfree(in);
+
+ if (err)
+ goto err;
+
+ rwq_ind_tbl->ib_rwq_ind_tbl.ind_tbl_num = rwq_ind_tbl->rqtn;
+ if (udata->outlen) {
+ resp.response_length = offsetof(typeof(resp), response_length) +
+ sizeof(resp.response_length);
+ err = ib_copy_to_udata(udata, &resp, resp.response_length);
+ if (err)
+ goto err_copy;
+ }
+
+ return &rwq_ind_tbl->ib_rwq_ind_tbl;
+
+err_copy:
+ mlx5_core_destroy_rqt(dev->mdev, rwq_ind_tbl->rqtn);
+err:
+ kfree(rwq_ind_tbl);
+ return ERR_PTR(err);
+}
+
+int mlx5_ib_destroy_rwq_ind_table(struct ib_rwq_ind_table *ib_rwq_ind_tbl)
+{
+ struct mlx5_ib_rwq_ind_table *rwq_ind_tbl = to_mrwq_ind_table(ib_rwq_ind_tbl);
+ struct mlx5_ib_dev *dev = to_mdev(ib_rwq_ind_tbl->device);
+
+ mlx5_core_destroy_rqt(dev->mdev, rwq_ind_tbl->rqtn);
+
+ kfree(rwq_ind_tbl);
+ return 0;
+}
+
+int mlx5_ib_modify_wq(struct ib_wq *wq, struct ib_wq_attr *wq_attr,
+ u32 wq_attr_mask, struct ib_udata *udata)
+{
+ struct mlx5_ib_dev *dev = to_mdev(wq->device);
+ struct mlx5_ib_rwq *rwq = to_mrwq(wq);
+ struct mlx5_ib_modify_wq ucmd = {};
+ size_t required_cmd_sz;
+ int curr_wq_state;
+ int wq_state;
+ int inlen;
+ int err;
+ void *rqc;
+ void *in;
+
+ required_cmd_sz = offsetof(typeof(ucmd), reserved) + sizeof(ucmd.reserved);
+ if (udata->inlen < required_cmd_sz)
+ return -EINVAL;
+
+ if (udata->inlen > sizeof(ucmd) &&
+ !ib_is_udata_cleared(udata, sizeof(ucmd),
+ udata->inlen - sizeof(ucmd)))
+ return -EOPNOTSUPP;
+
+ if (ib_copy_from_udata(&ucmd, udata, min(sizeof(ucmd), udata->inlen)))
+ return -EFAULT;
+
+ if (ucmd.comp_mask || ucmd.reserved)
+ return -EOPNOTSUPP;
+
+ inlen = MLX5_ST_SZ_BYTES(modify_rq_in);
+ in = mlx5_vzalloc(inlen);
+ if (!in)
+ return -ENOMEM;
+
+ rqc = MLX5_ADDR_OF(modify_rq_in, in, ctx);
+
+ curr_wq_state = (wq_attr_mask & IB_WQ_CUR_STATE) ?
+ wq_attr->curr_wq_state : wq->state;
+ wq_state = (wq_attr_mask & IB_WQ_STATE) ?
+ wq_attr->wq_state : curr_wq_state;
+ if (curr_wq_state == IB_WQS_ERR)
+ curr_wq_state = MLX5_RQC_STATE_ERR;
+ if (wq_state == IB_WQS_ERR)
+ wq_state = MLX5_RQC_STATE_ERR;
+ MLX5_SET(modify_rq_in, in, rq_state, curr_wq_state);
+ MLX5_SET(rqc, rqc, state, wq_state);
+
+ err = mlx5_core_modify_rq(dev->mdev, rwq->rqn, in, inlen);
+ kvfree(in);
+ if (!err)
+ rwq->ibwq.state = (wq_state == MLX5_RQC_STATE_ERR) ? IB_WQS_ERR : wq_state;
+
+ return err;
+}
diff --git a/drivers/infiniband/hw/mlx5/srq.c b/drivers/infiniband/hw/mlx5/srq.c
index 3b2ddd64a371..ed6ac52355f1 100644
--- a/drivers/infiniband/hw/mlx5/srq.c
+++ b/drivers/infiniband/hw/mlx5/srq.c
@@ -74,14 +74,12 @@ static void mlx5_ib_srq_event(struct mlx5_core_srq *srq, enum mlx5_event type)
}
static int create_srq_user(struct ib_pd *pd, struct mlx5_ib_srq *srq,
- struct mlx5_create_srq_mbox_in **in,
- struct ib_udata *udata, int buf_size, int *inlen,
- int is_xrc)
+ struct mlx5_srq_attr *in,
+ struct ib_udata *udata, int buf_size)
{
struct mlx5_ib_dev *dev = to_mdev(pd->device);
struct mlx5_ib_create_srq ucmd = {};
size_t ucmdlen;
- void *xsrqc;
int err;
int npages;
int page_shift;
@@ -104,7 +102,7 @@ static int create_srq_user(struct ib_pd *pd, struct mlx5_ib_srq *srq,
udata->inlen - sizeof(ucmd)))
return -EINVAL;
- if (is_xrc) {
+ if (in->type == IB_SRQT_XRC) {
err = get_srq_user_index(to_mucontext(pd->uobject->context),
&ucmd, udata->inlen, &uidx);
if (err)
@@ -130,14 +128,13 @@ static int create_srq_user(struct ib_pd *pd, struct mlx5_ib_srq *srq,
goto err_umem;
}
- *inlen = sizeof(**in) + sizeof(*(*in)->pas) * ncont;
- *in = mlx5_vzalloc(*inlen);
- if (!(*in)) {
+ in->pas = mlx5_vzalloc(sizeof(*in->pas) * ncont);
+ if (!in->pas) {
err = -ENOMEM;
goto err_umem;
}
- mlx5_ib_populate_pas(dev, srq->umem, page_shift, (*in)->pas, 0);
+ mlx5_ib_populate_pas(dev, srq->umem, page_shift, in->pas, 0);
err = mlx5_ib_db_map_user(to_mucontext(pd->uobject->context),
ucmd.db_addr, &srq->db);
@@ -146,20 +143,16 @@ static int create_srq_user(struct ib_pd *pd, struct mlx5_ib_srq *srq,
goto err_in;
}
- (*in)->ctx.log_pg_sz = page_shift - MLX5_ADAPTER_PAGE_SHIFT;
- (*in)->ctx.pgoff_cqn = cpu_to_be32(offset << 26);
-
- if ((MLX5_CAP_GEN(dev->mdev, cqe_version) == MLX5_CQE_VERSION_V1) &&
- is_xrc){
- xsrqc = MLX5_ADDR_OF(create_xrc_srq_in, *in,
- xrc_srq_context_entry);
- MLX5_SET(xrc_srqc, xsrqc, user_index, uidx);
- }
+ in->log_page_size = page_shift - MLX5_ADAPTER_PAGE_SHIFT;
+ in->page_offset = offset;
+ if (MLX5_CAP_GEN(dev->mdev, cqe_version) == MLX5_CQE_VERSION_V1 &&
+ in->type == IB_SRQT_XRC)
+ in->user_index = uidx;
return 0;
err_in:
- kvfree(*in);
+ kvfree(in->pas);
err_umem:
ib_umem_release(srq->umem);
@@ -168,15 +161,13 @@ err_umem:
}
static int create_srq_kernel(struct mlx5_ib_dev *dev, struct mlx5_ib_srq *srq,
- struct mlx5_create_srq_mbox_in **in, int buf_size,
- int *inlen, int is_xrc)
+ struct mlx5_srq_attr *in, int buf_size)
{
int err;
int i;
struct mlx5_wqe_srq_next_seg *next;
int page_shift;
int npages;
- void *xsrqc;
err = mlx5_db_alloc(dev->mdev, &srq->db);
if (err) {
@@ -204,13 +195,12 @@ static int create_srq_kernel(struct mlx5_ib_dev *dev, struct mlx5_ib_srq *srq,
npages = DIV_ROUND_UP(srq->buf.npages, 1 << (page_shift - PAGE_SHIFT));
mlx5_ib_dbg(dev, "buf_size %d, page_shift %d, npages %d, calc npages %d\n",
buf_size, page_shift, srq->buf.npages, npages);
- *inlen = sizeof(**in) + sizeof(*(*in)->pas) * npages;
- *in = mlx5_vzalloc(*inlen);
- if (!*in) {
+ in->pas = mlx5_vzalloc(sizeof(*in->pas) * npages);
+ if (!in->pas) {
err = -ENOMEM;
goto err_buf;
}
- mlx5_fill_page_array(&srq->buf, (*in)->pas);
+ mlx5_fill_page_array(&srq->buf, in->pas);
srq->wrid = kmalloc(srq->msrq.max * sizeof(u64), GFP_KERNEL);
if (!srq->wrid) {
@@ -221,20 +211,15 @@ static int create_srq_kernel(struct mlx5_ib_dev *dev, struct mlx5_ib_srq *srq,
}
srq->wq_sig = !!srq_signature;
- (*in)->ctx.log_pg_sz = page_shift - MLX5_ADAPTER_PAGE_SHIFT;
-
- if ((MLX5_CAP_GEN(dev->mdev, cqe_version) == MLX5_CQE_VERSION_V1) &&
- is_xrc){
- xsrqc = MLX5_ADDR_OF(create_xrc_srq_in, *in,
- xrc_srq_context_entry);
- /* 0xffffff means we ask to work with cqe version 0 */
- MLX5_SET(xrc_srqc, xsrqc, user_index, MLX5_IB_DEFAULT_UIDX);
- }
+ in->log_page_size = page_shift - MLX5_ADAPTER_PAGE_SHIFT;
+ if (MLX5_CAP_GEN(dev->mdev, cqe_version) == MLX5_CQE_VERSION_V1 &&
+ in->type == IB_SRQT_XRC)
+ in->user_index = MLX5_IB_DEFAULT_UIDX;
return 0;
err_in:
- kvfree(*in);
+ kvfree(in->pas);
err_buf:
mlx5_buf_free(dev->mdev, &srq->buf);
@@ -267,10 +252,7 @@ struct ib_srq *mlx5_ib_create_srq(struct ib_pd *pd,
int desc_size;
int buf_size;
int err;
- struct mlx5_create_srq_mbox_in *uninitialized_var(in);
- int uninitialized_var(inlen);
- int is_xrc;
- u32 flgs, xrcdn;
+ struct mlx5_srq_attr in = {0};
__u32 max_srq_wqes = 1 << MLX5_CAP_GEN(dev->mdev, log_max_srq_sz);
/* Sanity check SRQ size before proceeding */
@@ -302,14 +284,10 @@ struct ib_srq *mlx5_ib_create_srq(struct ib_pd *pd,
desc_size, init_attr->attr.max_wr, srq->msrq.max, srq->msrq.max_gs,
srq->msrq.max_avail_gather);
- is_xrc = (init_attr->srq_type == IB_SRQT_XRC);
-
if (pd->uobject)
- err = create_srq_user(pd, srq, &in, udata, buf_size, &inlen,
- is_xrc);
+ err = create_srq_user(pd, srq, &in, udata, buf_size);
else
- err = create_srq_kernel(dev, srq, &in, buf_size, &inlen,
- is_xrc);
+ err = create_srq_kernel(dev, srq, &in, buf_size);
if (err) {
mlx5_ib_warn(dev, "create srq %s failed, err %d\n",
@@ -317,23 +295,23 @@ struct ib_srq *mlx5_ib_create_srq(struct ib_pd *pd,
goto err_srq;
}
- in->ctx.state_log_sz = ilog2(srq->msrq.max);
- flgs = ((srq->msrq.wqe_shift - 4) | (is_xrc << 5) | (srq->wq_sig << 7)) << 24;
- xrcdn = 0;
- if (is_xrc) {
- xrcdn = to_mxrcd(init_attr->ext.xrc.xrcd)->xrcdn;
- in->ctx.pgoff_cqn |= cpu_to_be32(to_mcq(init_attr->ext.xrc.cq)->mcq.cqn);
+ in.type = init_attr->srq_type;
+ in.log_size = ilog2(srq->msrq.max);
+ in.wqe_shift = srq->msrq.wqe_shift - 4;
+ if (srq->wq_sig)
+ in.flags |= MLX5_SRQ_FLAG_WQ_SIG;
+ if (init_attr->srq_type == IB_SRQT_XRC) {
+ in.xrcd = to_mxrcd(init_attr->ext.xrc.xrcd)->xrcdn;
+ in.cqn = to_mcq(init_attr->ext.xrc.cq)->mcq.cqn;
} else if (init_attr->srq_type == IB_SRQT_BASIC) {
- xrcdn = to_mxrcd(dev->devr.x0)->xrcdn;
- in->ctx.pgoff_cqn |= cpu_to_be32(to_mcq(dev->devr.c0)->mcq.cqn);
+ in.xrcd = to_mxrcd(dev->devr.x0)->xrcdn;
+ in.cqn = to_mcq(dev->devr.c0)->mcq.cqn;
}
- in->ctx.flags_xrcd = cpu_to_be32((flgs & 0xFF000000) | (xrcdn & 0xFFFFFF));
-
- in->ctx.pd = cpu_to_be32(to_mpd(pd)->pdn);
- in->ctx.db_record = cpu_to_be64(srq->db.dma);
- err = mlx5_core_create_srq(dev->mdev, &srq->msrq, in, inlen, is_xrc);
- kvfree(in);
+ in.pd = to_mpd(pd)->pdn;
+ in.db_record = srq->db.dma;
+ err = mlx5_core_create_srq(dev->mdev, &srq->msrq, &in);
+ kvfree(in.pas);
if (err) {
mlx5_ib_dbg(dev, "create SRQ failed, err %d\n", err);
goto err_usr_kern_srq;
@@ -401,7 +379,7 @@ int mlx5_ib_query_srq(struct ib_srq *ibsrq, struct ib_srq_attr *srq_attr)
struct mlx5_ib_dev *dev = to_mdev(ibsrq->device);
struct mlx5_ib_srq *srq = to_msrq(ibsrq);
int ret;
- struct mlx5_query_srq_mbox_out *out;
+ struct mlx5_srq_attr *out;
out = kzalloc(sizeof(*out), GFP_KERNEL);
if (!out)
@@ -411,7 +389,7 @@ int mlx5_ib_query_srq(struct ib_srq *ibsrq, struct ib_srq_attr *srq_attr)
if (ret)
goto out_box;
- srq_attr->srq_limit = be16_to_cpu(out->ctx.lwm);
+ srq_attr->srq_limit = out->lwm;
srq_attr->max_wr = srq->msrq.max - 1;
srq_attr->max_sge = srq->msrq.max_gs;
@@ -458,6 +436,8 @@ int mlx5_ib_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr,
struct mlx5_ib_srq *srq = to_msrq(ibsrq);
struct mlx5_wqe_srq_next_seg *next;
struct mlx5_wqe_data_seg *scat;
+ struct mlx5_ib_dev *dev = to_mdev(ibsrq->device);
+ struct mlx5_core_dev *mdev = dev->mdev;
unsigned long flags;
int err = 0;
int nreq;
@@ -465,6 +445,12 @@ int mlx5_ib_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr,
spin_lock_irqsave(&srq->lock, flags);
+ if (mdev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR) {
+ err = -EIO;
+ *bad_wr = wr;
+ goto out;
+ }
+
for (nreq = 0; wr; nreq++, wr = wr->next) {
if (unlikely(wr->num_sge > srq->msrq.max_gs)) {
err = -EINVAL;
@@ -507,7 +493,7 @@ int mlx5_ib_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr,
*srq->db.db = cpu_to_be32(srq->wqe_ctr);
}
-
+out:
spin_unlock_irqrestore(&srq->lock, flags);
return err;
diff --git a/drivers/infiniband/hw/mlx5/user.h b/drivers/infiniband/hw/mlx5/user.h
index 61bc308bb802..188dac4301b5 100644
--- a/drivers/infiniband/hw/mlx5/user.h
+++ b/drivers/infiniband/hw/mlx5/user.h
@@ -46,6 +46,10 @@ enum {
MLX5_SRQ_FLAG_SIGNATURE = 1 << 0,
};
+enum {
+ MLX5_WQ_FLAG_SIGNATURE = 1 << 0,
+};
+
/* Increment this value if any changes that break userspace ABI
* compatibility are made.
@@ -79,6 +83,10 @@ enum mlx5_ib_alloc_ucontext_resp_mask {
MLX5_IB_ALLOC_UCONTEXT_RESP_MASK_CORE_CLOCK_OFFSET = 1UL << 0,
};
+enum mlx5_user_cmds_supp_uhw {
+ MLX5_USER_CMDS_SUPP_UHW_QUERY_DEVICE = 1 << 0,
+};
+
struct mlx5_ib_alloc_ucontext_resp {
__u32 qp_tab_size;
__u32 bf_reg_size;
@@ -94,8 +102,8 @@ struct mlx5_ib_alloc_ucontext_resp {
__u32 comp_mask;
__u32 response_length;
__u8 cqe_version;
- __u8 reserved2;
- __u16 reserved3;
+ __u8 cmds_supp_uhw;
+ __u16 reserved2;
__u64 hca_core_clock_offset;
};
@@ -103,6 +111,22 @@ struct mlx5_ib_alloc_pd_resp {
__u32 pdn;
};
+struct mlx5_ib_tso_caps {
+ __u32 max_tso; /* Maximum tso payload size in bytes */
+
+ /* Corresponding bit will be set if qp type from
+ * 'enum ib_qp_type' is supported, e.g.
+ * supported_qpts |= 1 << IB_QPT_UD
+ */
+ __u32 supported_qpts;
+};
+
+struct mlx5_ib_query_device_resp {
+ __u32 comp_mask;
+ __u32 response_length;
+ struct mlx5_ib_tso_caps tso_caps;
+};
+
struct mlx5_ib_create_cq {
__u64 buf_addr;
__u64 db_addr;
@@ -148,6 +172,40 @@ struct mlx5_ib_create_qp {
__u64 sq_buf_addr;
};
+/* RX Hash function flags */
+enum mlx5_rx_hash_function_flags {
+ MLX5_RX_HASH_FUNC_TOEPLITZ = 1 << 0,
+};
+
+/*
+ * RX Hash flags, these flags allows to set which incoming packet's field should
+ * participates in RX Hash. Each flag represent certain packet's field,
+ * when the flag is set the field that is represented by the flag will
+ * participate in RX Hash calculation.
+ * Note: *IPV4 and *IPV6 flags can't be enabled together on the same QP
+ * and *TCP and *UDP flags can't be enabled together on the same QP.
+*/
+enum mlx5_rx_hash_fields {
+ MLX5_RX_HASH_SRC_IPV4 = 1 << 0,
+ MLX5_RX_HASH_DST_IPV4 = 1 << 1,
+ MLX5_RX_HASH_SRC_IPV6 = 1 << 2,
+ MLX5_RX_HASH_DST_IPV6 = 1 << 3,
+ MLX5_RX_HASH_SRC_PORT_TCP = 1 << 4,
+ MLX5_RX_HASH_DST_PORT_TCP = 1 << 5,
+ MLX5_RX_HASH_SRC_PORT_UDP = 1 << 6,
+ MLX5_RX_HASH_DST_PORT_UDP = 1 << 7
+};
+
+struct mlx5_ib_create_qp_rss {
+ __u64 rx_hash_fields_mask; /* enum mlx5_rx_hash_fields */
+ __u8 rx_hash_function; /* enum mlx5_rx_hash_function_flags */
+ __u8 rx_key_len; /* valid only for Toeplitz */
+ __u8 reserved[6];
+ __u8 rx_hash_key[128]; /* valid only for Toeplitz */
+ __u32 comp_mask;
+ __u32 reserved1;
+};
+
struct mlx5_ib_create_qp_resp {
__u32 uuar_index;
};
@@ -159,6 +217,32 @@ struct mlx5_ib_alloc_mw {
__u16 reserved2;
};
+struct mlx5_ib_create_wq {
+ __u64 buf_addr;
+ __u64 db_addr;
+ __u32 rq_wqe_count;
+ __u32 rq_wqe_shift;
+ __u32 user_index;
+ __u32 flags;
+ __u32 comp_mask;
+ __u32 reserved;
+};
+
+struct mlx5_ib_create_wq_resp {
+ __u32 response_length;
+ __u32 reserved;
+};
+
+struct mlx5_ib_create_rwq_ind_tbl_resp {
+ __u32 response_length;
+ __u32 reserved;
+};
+
+struct mlx5_ib_modify_wq {
+ __u32 comp_mask;
+ __u32 reserved;
+};
+
static inline int get_qp_user_index(struct mlx5_ib_ucontext *ucontext,
struct mlx5_ib_create_qp *ucmd,
int inlen,
diff --git a/drivers/infiniband/hw/mthca/mthca_provider.c b/drivers/infiniband/hw/mthca/mthca_provider.c
index 9866c35cc977..da2335f7f7c3 100644
--- a/drivers/infiniband/hw/mthca/mthca_provider.c
+++ b/drivers/infiniband/hw/mthca/mthca_provider.c
@@ -1081,16 +1081,6 @@ static ssize_t show_rev(struct device *device, struct device_attribute *attr,
return sprintf(buf, "%x\n", dev->rev_id);
}
-static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
- char *buf)
-{
- struct mthca_dev *dev =
- container_of(device, struct mthca_dev, ib_dev.dev);
- return sprintf(buf, "%d.%d.%d\n", (int) (dev->fw_ver >> 32),
- (int) (dev->fw_ver >> 16) & 0xffff,
- (int) dev->fw_ver & 0xffff);
-}
-
static ssize_t show_hca(struct device *device, struct device_attribute *attr,
char *buf)
{
@@ -1120,13 +1110,11 @@ static ssize_t show_board(struct device *device, struct device_attribute *attr,
}
static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
-static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
static struct device_attribute *mthca_dev_attributes[] = {
&dev_attr_hw_rev,
- &dev_attr_fw_ver,
&dev_attr_hca_type,
&dev_attr_board_id
};
@@ -1187,6 +1175,17 @@ static int mthca_port_immutable(struct ib_device *ibdev, u8 port_num,
return 0;
}
+static void get_dev_fw_str(struct ib_device *device, char *str,
+ size_t str_len)
+{
+ struct mthca_dev *dev =
+ container_of(device, struct mthca_dev, ib_dev);
+ snprintf(str, str_len, "%d.%d.%d",
+ (int) (dev->fw_ver >> 32),
+ (int) (dev->fw_ver >> 16) & 0xffff,
+ (int) dev->fw_ver & 0xffff);
+}
+
int mthca_register_device(struct mthca_dev *dev)
{
int ret;
@@ -1266,6 +1265,7 @@ int mthca_register_device(struct mthca_dev *dev)
dev->ib_dev.reg_user_mr = mthca_reg_user_mr;
dev->ib_dev.dereg_mr = mthca_dereg_mr;
dev->ib_dev.get_port_immutable = mthca_port_immutable;
+ dev->ib_dev.get_dev_fw_str = get_dev_fw_str;
if (dev->mthca_flags & MTHCA_FLAG_FMR) {
dev->ib_dev.alloc_fmr = mthca_alloc_fmr;
diff --git a/drivers/infiniband/hw/mthca/mthca_reset.c b/drivers/infiniband/hw/mthca/mthca_reset.c
index 74c6a9426047..6727af27c017 100644
--- a/drivers/infiniband/hw/mthca/mthca_reset.c
+++ b/drivers/infiniband/hw/mthca/mthca_reset.c
@@ -98,7 +98,7 @@ int mthca_reset(struct mthca_dev *mdev)
err = -ENOMEM;
mthca_err(mdev, "Couldn't allocate memory to save HCA "
"PCI header, aborting.\n");
- goto out;
+ goto put_dev;
}
for (i = 0; i < 64; ++i) {
@@ -108,7 +108,7 @@ int mthca_reset(struct mthca_dev *mdev)
err = -ENODEV;
mthca_err(mdev, "Couldn't save HCA "
"PCI header, aborting.\n");
- goto out;
+ goto free_hca;
}
}
@@ -121,7 +121,7 @@ int mthca_reset(struct mthca_dev *mdev)
err = -ENOMEM;
mthca_err(mdev, "Couldn't allocate memory to save HCA "
"bridge PCI header, aborting.\n");
- goto out;
+ goto free_hca;
}
for (i = 0; i < 64; ++i) {
@@ -131,7 +131,7 @@ int mthca_reset(struct mthca_dev *mdev)
err = -ENODEV;
mthca_err(mdev, "Couldn't save HCA bridge "
"PCI header, aborting.\n");
- goto out;
+ goto free_bh;
}
}
bridge_pcix_cap = pci_find_capability(bridge, PCI_CAP_ID_PCIX);
@@ -139,7 +139,7 @@ int mthca_reset(struct mthca_dev *mdev)
err = -ENODEV;
mthca_err(mdev, "Couldn't locate HCA bridge "
"PCI-X capability, aborting.\n");
- goto out;
+ goto free_bh;
}
}
@@ -152,7 +152,7 @@ int mthca_reset(struct mthca_dev *mdev)
err = -ENOMEM;
mthca_err(mdev, "Couldn't map HCA reset register, "
"aborting.\n");
- goto out;
+ goto free_bh;
}
writel(MTHCA_RESET_VALUE, reset);
@@ -172,7 +172,7 @@ int mthca_reset(struct mthca_dev *mdev)
err = -ENODEV;
mthca_err(mdev, "Couldn't access HCA after reset, "
"aborting.\n");
- goto out;
+ goto free_bh;
}
if (v != 0xffffffff)
@@ -184,7 +184,7 @@ int mthca_reset(struct mthca_dev *mdev)
err = -ENODEV;
mthca_err(mdev, "PCI device did not come back after reset, "
"aborting.\n");
- goto out;
+ goto free_bh;
}
good:
@@ -195,14 +195,14 @@ good:
err = -ENODEV;
mthca_err(mdev, "Couldn't restore HCA bridge Upstream "
"split transaction control, aborting.\n");
- goto out;
+ goto free_bh;
}
if (pci_write_config_dword(bridge, bridge_pcix_cap + 0xc,
bridge_header[(bridge_pcix_cap + 0xc) / 4])) {
err = -ENODEV;
mthca_err(mdev, "Couldn't restore HCA bridge Downstream "
"split transaction control, aborting.\n");
- goto out;
+ goto free_bh;
}
/*
* Bridge control register is at 0x3e, so we'll
@@ -216,7 +216,7 @@ good:
err = -ENODEV;
mthca_err(mdev, "Couldn't restore HCA bridge reg %x, "
"aborting.\n", i);
- goto out;
+ goto free_bh;
}
}
@@ -225,7 +225,7 @@ good:
err = -ENODEV;
mthca_err(mdev, "Couldn't restore HCA bridge COMMAND, "
"aborting.\n");
- goto out;
+ goto free_bh;
}
}
@@ -235,7 +235,7 @@ good:
err = -ENODEV;
mthca_err(mdev, "Couldn't restore HCA PCI-X "
"command register, aborting.\n");
- goto out;
+ goto free_bh;
}
}
@@ -246,7 +246,7 @@ good:
err = -ENODEV;
mthca_err(mdev, "Couldn't restore HCA PCI Express "
"Device Control register, aborting.\n");
- goto out;
+ goto free_bh;
}
linkctl = hca_header[(hca_pcie_cap + PCI_EXP_LNKCTL) / 4];
if (pcie_capability_write_word(mdev->pdev, PCI_EXP_LNKCTL,
@@ -254,7 +254,7 @@ good:
err = -ENODEV;
mthca_err(mdev, "Couldn't restore HCA PCI Express "
"Link control register, aborting.\n");
- goto out;
+ goto free_bh;
}
}
@@ -266,7 +266,7 @@ good:
err = -ENODEV;
mthca_err(mdev, "Couldn't restore HCA reg %x, "
"aborting.\n", i);
- goto out;
+ goto free_bh;
}
}
@@ -275,14 +275,12 @@ good:
err = -ENODEV;
mthca_err(mdev, "Couldn't restore HCA COMMAND, "
"aborting.\n");
- goto out;
}
-
-out:
- if (bridge)
- pci_dev_put(bridge);
+free_bh:
kfree(bridge_header);
+free_hca:
kfree(hca_header);
-
+put_dev:
+ pci_dev_put(bridge);
return err;
}
diff --git a/drivers/infiniband/hw/nes/nes_verbs.c b/drivers/infiniband/hw/nes/nes_verbs.c
index 464d6da5fe91..bd69125731c1 100644
--- a/drivers/infiniband/hw/nes/nes_verbs.c
+++ b/drivers/infiniband/hw/nes/nes_verbs.c
@@ -2606,23 +2606,6 @@ static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
/**
- * show_fw_ver
- */
-static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr,
- char *buf)
-{
- struct nes_ib_device *nesibdev =
- container_of(dev, struct nes_ib_device, ibdev.dev);
- struct nes_vnic *nesvnic = nesibdev->nesvnic;
-
- nes_debug(NES_DBG_INIT, "\n");
- return sprintf(buf, "%u.%u\n",
- (nesvnic->nesdev->nesadapter->firmware_version >> 16),
- (nesvnic->nesdev->nesadapter->firmware_version & 0x000000ff));
-}
-
-
-/**
* show_hca
*/
static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
@@ -2645,13 +2628,11 @@ static ssize_t show_board(struct device *dev, struct device_attribute *attr,
static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
-static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
static struct device_attribute *nes_dev_attributes[] = {
&dev_attr_hw_rev,
- &dev_attr_fw_ver,
&dev_attr_hca_type,
&dev_attr_board_id
};
@@ -3703,6 +3684,19 @@ static int nes_port_immutable(struct ib_device *ibdev, u8 port_num,
return 0;
}
+static void get_dev_fw_str(struct ib_device *dev, char *str,
+ size_t str_len)
+{
+ struct nes_ib_device *nesibdev =
+ container_of(dev, struct nes_ib_device, ibdev);
+ struct nes_vnic *nesvnic = nesibdev->nesvnic;
+
+ nes_debug(NES_DBG_INIT, "\n");
+ snprintf(str, str_len, "%u.%u",
+ (nesvnic->nesdev->nesadapter->firmware_version >> 16),
+ (nesvnic->nesdev->nesadapter->firmware_version & 0x000000ff));
+}
+
/**
* nes_init_ofa_device
*/
@@ -3802,6 +3796,7 @@ struct nes_ib_device *nes_init_ofa_device(struct net_device *netdev)
nesibdev->ibdev.iwcm->create_listen = nes_create_listen;
nesibdev->ibdev.iwcm->destroy_listen = nes_destroy_listen;
nesibdev->ibdev.get_port_immutable = nes_port_immutable;
+ nesibdev->ibdev.get_dev_fw_str = get_dev_fw_str;
memcpy(nesibdev->ibdev.iwcm->ifname, netdev->name,
sizeof(nesibdev->ibdev.iwcm->ifname));
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_main.c b/drivers/infiniband/hw/ocrdma/ocrdma_main.c
index 3d75f65ce87e..07d0c6c5b046 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma_main.c
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_main.c
@@ -107,6 +107,14 @@ static int ocrdma_port_immutable(struct ib_device *ibdev, u8 port_num,
return 0;
}
+static void get_dev_fw_str(struct ib_device *device, char *str,
+ size_t str_len)
+{
+ struct ocrdma_dev *dev = get_ocrdma_dev(device);
+
+ snprintf(str, str_len, "%s", &dev->attr.fw_ver[0]);
+}
+
static int ocrdma_register_device(struct ocrdma_dev *dev)
{
strlcpy(dev->ibdev.name, "ocrdma%d", IB_DEVICE_NAME_MAX);
@@ -193,6 +201,7 @@ static int ocrdma_register_device(struct ocrdma_dev *dev)
dev->ibdev.process_mad = ocrdma_process_mad;
dev->ibdev.get_port_immutable = ocrdma_port_immutable;
+ dev->ibdev.get_dev_fw_str = get_dev_fw_str;
if (ocrdma_get_asic_type(dev) == OCRDMA_ASIC_GEN_SKH_R) {
dev->ibdev.uverbs_cmd_mask |=
@@ -262,14 +271,6 @@ static ssize_t show_rev(struct device *device, struct device_attribute *attr,
return scnprintf(buf, PAGE_SIZE, "0x%x\n", dev->nic_info.pdev->vendor);
}
-static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
- char *buf)
-{
- struct ocrdma_dev *dev = dev_get_drvdata(device);
-
- return scnprintf(buf, PAGE_SIZE, "%s\n", &dev->attr.fw_ver[0]);
-}
-
static ssize_t show_hca_type(struct device *device,
struct device_attribute *attr, char *buf)
{
@@ -279,12 +280,10 @@ static ssize_t show_hca_type(struct device *device,
}
static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
-static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
static DEVICE_ATTR(hca_type, S_IRUGO, show_hca_type, NULL);
static struct device_attribute *ocrdma_attributes[] = {
&dev_attr_hw_rev,
- &dev_attr_fw_ver,
&dev_attr_hca_type
};
diff --git a/drivers/infiniband/hw/qib/qib_qp.c b/drivers/infiniband/hw/qib/qib_qp.c
index 575b737d9ef3..9cc0aae1d781 100644
--- a/drivers/infiniband/hw/qib/qib_qp.c
+++ b/drivers/infiniband/hw/qib/qib_qp.c
@@ -106,6 +106,49 @@ static u32 credit_table[31] = {
32768 /* 1E */
};
+const struct rvt_operation_params qib_post_parms[RVT_OPERATION_MAX] = {
+[IB_WR_RDMA_WRITE] = {
+ .length = sizeof(struct ib_rdma_wr),
+ .qpt_support = BIT(IB_QPT_UC) | BIT(IB_QPT_RC),
+},
+
+[IB_WR_RDMA_READ] = {
+ .length = sizeof(struct ib_rdma_wr),
+ .qpt_support = BIT(IB_QPT_RC),
+ .flags = RVT_OPERATION_ATOMIC,
+},
+
+[IB_WR_ATOMIC_CMP_AND_SWP] = {
+ .length = sizeof(struct ib_atomic_wr),
+ .qpt_support = BIT(IB_QPT_RC),
+ .flags = RVT_OPERATION_ATOMIC | RVT_OPERATION_ATOMIC_SGE,
+},
+
+[IB_WR_ATOMIC_FETCH_AND_ADD] = {
+ .length = sizeof(struct ib_atomic_wr),
+ .qpt_support = BIT(IB_QPT_RC),
+ .flags = RVT_OPERATION_ATOMIC | RVT_OPERATION_ATOMIC_SGE,
+},
+
+[IB_WR_RDMA_WRITE_WITH_IMM] = {
+ .length = sizeof(struct ib_rdma_wr),
+ .qpt_support = BIT(IB_QPT_UC) | BIT(IB_QPT_RC),
+},
+
+[IB_WR_SEND] = {
+ .length = sizeof(struct ib_send_wr),
+ .qpt_support = BIT(IB_QPT_UD) | BIT(IB_QPT_SMI) | BIT(IB_QPT_GSI) |
+ BIT(IB_QPT_UC) | BIT(IB_QPT_RC),
+},
+
+[IB_WR_SEND_WITH_IMM] = {
+ .length = sizeof(struct ib_send_wr),
+ .qpt_support = BIT(IB_QPT_UD) | BIT(IB_QPT_SMI) | BIT(IB_QPT_GSI) |
+ BIT(IB_QPT_UC) | BIT(IB_QPT_RC),
+},
+
+};
+
static void get_map_page(struct rvt_qpn_table *qpt, struct rvt_qpn_map *map,
gfp_t gfp)
{
diff --git a/drivers/infiniband/hw/qib/qib_ud.c b/drivers/infiniband/hw/qib/qib_ud.c
index 846e6c726df7..10d062561bd9 100644
--- a/drivers/infiniband/hw/qib/qib_ud.c
+++ b/drivers/infiniband/hw/qib/qib_ud.c
@@ -169,8 +169,12 @@ static void qib_ud_loopback(struct rvt_qp *sqp, struct rvt_swqe *swqe)
}
if (ah_attr->ah_flags & IB_AH_GRH) {
- qib_copy_sge(&qp->r_sge, &ah_attr->grh,
- sizeof(struct ib_grh), 1);
+ struct ib_grh grh;
+ struct ib_global_route grd = ah_attr->grh;
+
+ qib_make_grh(ibp, &grh, &grd, 0, 0);
+ qib_copy_sge(&qp->r_sge, &grh,
+ sizeof(grh), 1);
wc.wc_flags |= IB_WC_GRH;
} else
qib_skip_sge(&qp->r_sge, sizeof(struct ib_grh), 1);
diff --git a/drivers/infiniband/hw/qib/qib_verbs.c b/drivers/infiniband/hw/qib/qib_verbs.c
index cbf6200e6afc..fd1dfbce5539 100644
--- a/drivers/infiniband/hw/qib/qib_verbs.c
+++ b/drivers/infiniband/hw/qib/qib_verbs.c
@@ -1582,6 +1582,8 @@ static void qib_fill_device_attr(struct qib_devdata *dd)
rdi->dparms.props.max_total_mcast_qp_attach =
rdi->dparms.props.max_mcast_qp_attach *
rdi->dparms.props.max_mcast_grp;
+ /* post send table */
+ dd->verbs_dev.rdi.post_parms = qib_post_parms;
}
/**
diff --git a/drivers/infiniband/hw/qib/qib_verbs.h b/drivers/infiniband/hw/qib/qib_verbs.h
index 4f878151f81f..736ced684842 100644
--- a/drivers/infiniband/hw/qib/qib_verbs.h
+++ b/drivers/infiniband/hw/qib/qib_verbs.h
@@ -497,4 +497,6 @@ extern unsigned int ib_qib_max_srq_wrs;
extern const u32 ib_qib_rnr_table[];
+extern const struct rvt_operation_params qib_post_parms[];
+
#endif /* QIB_VERBS_H */
diff --git a/drivers/infiniband/hw/usnic/usnic_ib_main.c b/drivers/infiniband/hw/usnic/usnic_ib_main.c
index 565c881a44ba..c229b9f4a52d 100644
--- a/drivers/infiniband/hw/usnic/usnic_ib_main.c
+++ b/drivers/infiniband/hw/usnic/usnic_ib_main.c
@@ -331,6 +331,21 @@ static int usnic_port_immutable(struct ib_device *ibdev, u8 port_num,
return 0;
}
+static void usnic_get_dev_fw_str(struct ib_device *device,
+ char *str,
+ size_t str_len)
+{
+ struct usnic_ib_dev *us_ibdev =
+ container_of(device, struct usnic_ib_dev, ib_dev);
+ struct ethtool_drvinfo info;
+
+ mutex_lock(&us_ibdev->usdev_lock);
+ us_ibdev->netdev->ethtool_ops->get_drvinfo(us_ibdev->netdev, &info);
+ mutex_unlock(&us_ibdev->usdev_lock);
+
+ snprintf(str, str_len, "%s", info.fw_version);
+}
+
/* Start of PF discovery section */
static void *usnic_ib_device_add(struct pci_dev *dev)
{
@@ -414,6 +429,7 @@ static void *usnic_ib_device_add(struct pci_dev *dev)
us_ibdev->ib_dev.req_notify_cq = usnic_ib_req_notify_cq;
us_ibdev->ib_dev.get_dma_mr = usnic_ib_get_dma_mr;
us_ibdev->ib_dev.get_port_immutable = usnic_port_immutable;
+ us_ibdev->ib_dev.get_dev_fw_str = usnic_get_dev_fw_str;
if (ib_register_device(&us_ibdev->ib_dev, NULL))
diff --git a/drivers/infiniband/hw/usnic/usnic_ib_sysfs.c b/drivers/infiniband/hw/usnic/usnic_ib_sysfs.c
index 3412ea06116e..80ef3f8998c8 100644
--- a/drivers/infiniband/hw/usnic/usnic_ib_sysfs.c
+++ b/drivers/infiniband/hw/usnic/usnic_ib_sysfs.c
@@ -45,21 +45,6 @@
#include "usnic_ib_verbs.h"
#include "usnic_log.h"
-static ssize_t usnic_ib_show_fw_ver(struct device *device,
- struct device_attribute *attr,
- char *buf)
-{
- struct usnic_ib_dev *us_ibdev =
- container_of(device, struct usnic_ib_dev, ib_dev.dev);
- struct ethtool_drvinfo info;
-
- mutex_lock(&us_ibdev->usdev_lock);
- us_ibdev->netdev->ethtool_ops->get_drvinfo(us_ibdev->netdev, &info);
- mutex_unlock(&us_ibdev->usdev_lock);
-
- return scnprintf(buf, PAGE_SIZE, "%s\n", info.fw_version);
-}
-
static ssize_t usnic_ib_show_board(struct device *device,
struct device_attribute *attr,
char *buf)
@@ -192,7 +177,6 @@ usnic_ib_show_cq_per_vf(struct device *device, struct device_attribute *attr,
us_ibdev->vf_res_cnt[USNIC_VNIC_RES_TYPE_CQ]);
}
-static DEVICE_ATTR(fw_ver, S_IRUGO, usnic_ib_show_fw_ver, NULL);
static DEVICE_ATTR(board_id, S_IRUGO, usnic_ib_show_board, NULL);
static DEVICE_ATTR(config, S_IRUGO, usnic_ib_show_config, NULL);
static DEVICE_ATTR(iface, S_IRUGO, usnic_ib_show_iface, NULL);
@@ -201,7 +185,6 @@ static DEVICE_ATTR(qp_per_vf, S_IRUGO, usnic_ib_show_qp_per_vf, NULL);
static DEVICE_ATTR(cq_per_vf, S_IRUGO, usnic_ib_show_cq_per_vf, NULL);
static struct device_attribute *usnic_class_attributes[] = {
- &dev_attr_fw_ver,
&dev_attr_board_id,
&dev_attr_config,
&dev_attr_iface,
diff --git a/drivers/infiniband/sw/Makefile b/drivers/infiniband/sw/Makefile
index 988b6a0101a4..8b095b27db87 100644
--- a/drivers/infiniband/sw/Makefile
+++ b/drivers/infiniband/sw/Makefile
@@ -1 +1,2 @@
obj-$(CONFIG_INFINIBAND_RDMAVT) += rdmavt/
+obj-$(CONFIG_RDMA_RXE) += rxe/
diff --git a/drivers/infiniband/sw/rdmavt/Kconfig b/drivers/infiniband/sw/rdmavt/Kconfig
index 11aa6a34bd71..1da8d01a6855 100644
--- a/drivers/infiniband/sw/rdmavt/Kconfig
+++ b/drivers/infiniband/sw/rdmavt/Kconfig
@@ -1,6 +1,5 @@
config INFINIBAND_RDMAVT
tristate "RDMA verbs transport library"
depends on 64BIT
- default m
---help---
This is a common software verbs provider for RDMA networks.
diff --git a/drivers/infiniband/sw/rdmavt/cq.c b/drivers/infiniband/sw/rdmavt/cq.c
index 6ca6fa80dd6e..f2f229efbe64 100644
--- a/drivers/infiniband/sw/rdmavt/cq.c
+++ b/drivers/infiniband/sw/rdmavt/cq.c
@@ -510,6 +510,7 @@ int rvt_driver_cq_init(struct rvt_dev_info *rdi)
if (rdi->worker)
return 0;
+ spin_lock_init(&rdi->n_cqs_lock);
rdi->worker = kzalloc(sizeof(*rdi->worker), GFP_KERNEL);
if (!rdi->worker)
return -ENOMEM;
diff --git a/drivers/infiniband/sw/rdmavt/mr.c b/drivers/infiniband/sw/rdmavt/mr.c
index 0f4d4500f45e..80c4b6b401b8 100644
--- a/drivers/infiniband/sw/rdmavt/mr.c
+++ b/drivers/infiniband/sw/rdmavt/mr.c
@@ -140,6 +140,7 @@ static int rvt_init_mregion(struct rvt_mregion *mr, struct ib_pd *pd,
init_completion(&mr->comp);
/* count returning the ptr to user */
atomic_set(&mr->refcount, 1);
+ atomic_set(&mr->lkey_invalid, 0);
mr->pd = pd;
mr->max_segs = count;
return 0;
@@ -480,6 +481,123 @@ struct ib_mr *rvt_alloc_mr(struct ib_pd *pd,
}
/**
+ * rvt_set_page - page assignment function called by ib_sg_to_pages
+ * @ibmr: memory region
+ * @addr: dma address of mapped page
+ *
+ * Return: 0 on success
+ */
+static int rvt_set_page(struct ib_mr *ibmr, u64 addr)
+{
+ struct rvt_mr *mr = to_imr(ibmr);
+ u32 ps = 1 << mr->mr.page_shift;
+ u32 mapped_segs = mr->mr.length >> mr->mr.page_shift;
+ int m, n;
+
+ if (unlikely(mapped_segs == mr->mr.max_segs))
+ return -ENOMEM;
+
+ if (mr->mr.length == 0) {
+ mr->mr.user_base = addr;
+ mr->mr.iova = addr;
+ }
+
+ m = mapped_segs / RVT_SEGSZ;
+ n = mapped_segs % RVT_SEGSZ;
+ mr->mr.map[m]->segs[n].vaddr = (void *)addr;
+ mr->mr.map[m]->segs[n].length = ps;
+ mr->mr.length += ps;
+
+ return 0;
+}
+
+/**
+ * rvt_map_mr_sg - map sg list and set it the memory region
+ * @ibmr: memory region
+ * @sg: dma mapped scatterlist
+ * @sg_nents: number of entries in sg
+ * @sg_offset: offset in bytes into sg
+ *
+ * Return: number of sg elements mapped to the memory region
+ */
+int rvt_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg,
+ int sg_nents, unsigned int *sg_offset)
+{
+ struct rvt_mr *mr = to_imr(ibmr);
+
+ mr->mr.length = 0;
+ mr->mr.page_shift = PAGE_SHIFT;
+ return ib_sg_to_pages(ibmr, sg, sg_nents, sg_offset,
+ rvt_set_page);
+}
+
+/**
+ * rvt_fast_reg_mr - fast register physical MR
+ * @qp: the queue pair where the work request comes from
+ * @ibmr: the memory region to be registered
+ * @key: updated key for this memory region
+ * @access: access flags for this memory region
+ *
+ * Returns 0 on success.
+ */
+int rvt_fast_reg_mr(struct rvt_qp *qp, struct ib_mr *ibmr, u32 key,
+ int access)
+{
+ struct rvt_mr *mr = to_imr(ibmr);
+
+ if (qp->ibqp.pd != mr->mr.pd)
+ return -EACCES;
+
+ /* not applicable to dma MR or user MR */
+ if (!mr->mr.lkey || mr->umem)
+ return -EINVAL;
+
+ if ((key & 0xFFFFFF00) != (mr->mr.lkey & 0xFFFFFF00))
+ return -EINVAL;
+
+ ibmr->lkey = key;
+ ibmr->rkey = key;
+ mr->mr.lkey = key;
+ mr->mr.access_flags = access;
+ atomic_set(&mr->mr.lkey_invalid, 0);
+
+ return 0;
+}
+EXPORT_SYMBOL(rvt_fast_reg_mr);
+
+/**
+ * rvt_invalidate_rkey - invalidate an MR rkey
+ * @qp: queue pair associated with the invalidate op
+ * @rkey: rkey to invalidate
+ *
+ * Returns 0 on success.
+ */
+int rvt_invalidate_rkey(struct rvt_qp *qp, u32 rkey)
+{
+ struct rvt_dev_info *dev = ib_to_rvt(qp->ibqp.device);
+ struct rvt_lkey_table *rkt = &dev->lkey_table;
+ struct rvt_mregion *mr;
+
+ if (rkey == 0)
+ return -EINVAL;
+
+ rcu_read_lock();
+ mr = rcu_dereference(
+ rkt->table[(rkey >> (32 - dev->dparms.lkey_table_size))]);
+ if (unlikely(!mr || mr->lkey != rkey || qp->ibqp.pd != mr->pd))
+ goto bail;
+
+ atomic_set(&mr->lkey_invalid, 1);
+ rcu_read_unlock();
+ return 0;
+
+bail:
+ rcu_read_unlock();
+ return -EINVAL;
+}
+EXPORT_SYMBOL(rvt_invalidate_rkey);
+
+/**
* rvt_alloc_fmr - allocate a fast memory region
* @pd: the protection domain for this memory region
* @mr_access_flags: access flags for this memory region
@@ -682,7 +800,8 @@ int rvt_lkey_ok(struct rvt_lkey_table *rkt, struct rvt_pd *pd,
}
mr = rcu_dereference(
rkt->table[(sge->lkey >> (32 - dev->dparms.lkey_table_size))]);
- if (unlikely(!mr || mr->lkey != sge->lkey || mr->pd != &pd->ibpd))
+ if (unlikely(!mr || atomic_read(&mr->lkey_invalid) ||
+ mr->lkey != sge->lkey || mr->pd != &pd->ibpd))
goto bail;
off = sge->addr - mr->user_base;
@@ -782,7 +901,8 @@ int rvt_rkey_ok(struct rvt_qp *qp, struct rvt_sge *sge,
mr = rcu_dereference(
rkt->table[(rkey >> (32 - dev->dparms.lkey_table_size))]);
- if (unlikely(!mr || mr->lkey != rkey || qp->ibqp.pd != mr->pd))
+ if (unlikely(!mr || atomic_read(&mr->lkey_invalid) ||
+ mr->lkey != rkey || qp->ibqp.pd != mr->pd))
goto bail;
off = vaddr - mr->iova;
diff --git a/drivers/infiniband/sw/rdmavt/mr.h b/drivers/infiniband/sw/rdmavt/mr.h
index 69380512c6d1..132800ee0205 100644
--- a/drivers/infiniband/sw/rdmavt/mr.h
+++ b/drivers/infiniband/sw/rdmavt/mr.h
@@ -82,6 +82,8 @@ int rvt_dereg_mr(struct ib_mr *ibmr);
struct ib_mr *rvt_alloc_mr(struct ib_pd *pd,
enum ib_mr_type mr_type,
u32 max_num_sg);
+int rvt_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg,
+ int sg_nents, unsigned int *sg_offset);
struct ib_fmr *rvt_alloc_fmr(struct ib_pd *pd, int mr_access_flags,
struct ib_fmr_attr *fmr_attr);
int rvt_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list,
diff --git a/drivers/infiniband/sw/rdmavt/qp.c b/drivers/infiniband/sw/rdmavt/qp.c
index 41ba7e9cadaa..bdb540f25a88 100644
--- a/drivers/infiniband/sw/rdmavt/qp.c
+++ b/drivers/infiniband/sw/rdmavt/qp.c
@@ -435,8 +435,7 @@ static void rvt_clear_mr_refs(struct rvt_qp *qp, int clr_sends)
for (n = 0; n < rvt_max_atomic(rdi); n++) {
struct rvt_ack_entry *e = &qp->s_ack_queue[n];
- if (e->opcode == IB_OPCODE_RC_RDMA_READ_REQUEST &&
- e->rdma_sge.mr) {
+ if (e->rdma_sge.mr) {
rvt_put_mr(e->rdma_sge.mr);
e->rdma_sge.mr = NULL;
}
@@ -584,6 +583,7 @@ static void rvt_reset_qp(struct rvt_dev_info *rdi, struct rvt_qp *qp,
qp->r_rq.wq->tail = 0;
}
qp->r_sge.num_sge = 0;
+ atomic_set(&qp->s_reserved_used, 0);
}
/**
@@ -613,6 +613,7 @@ struct ib_qp *rvt_create_qp(struct ib_pd *ibpd,
struct rvt_dev_info *rdi = ib_to_rvt(ibpd->device);
void *priv = NULL;
gfp_t gfp;
+ size_t sqsize;
if (!rdi)
return ERR_PTR(-EINVAL);
@@ -643,7 +644,9 @@ struct ib_qp *rvt_create_qp(struct ib_pd *ibpd,
init_attr->cap.max_recv_wr == 0)
return ERR_PTR(-EINVAL);
}
-
+ sqsize =
+ init_attr->cap.max_send_wr + 1 +
+ rdi->dparms.reserved_operations;
switch (init_attr->qp_type) {
case IB_QPT_SMI:
case IB_QPT_GSI:
@@ -658,11 +661,11 @@ struct ib_qp *rvt_create_qp(struct ib_pd *ibpd,
sizeof(struct rvt_swqe);
if (gfp == GFP_NOIO)
swq = __vmalloc(
- (init_attr->cap.max_send_wr + 1) * sz,
+ sqsize * sz,
gfp | __GFP_ZERO, PAGE_KERNEL);
else
swq = vzalloc_node(
- (init_attr->cap.max_send_wr + 1) * sz,
+ sqsize * sz,
rdi->dparms.node);
if (!swq)
return ERR_PTR(-ENOMEM);
@@ -741,13 +744,14 @@ struct ib_qp *rvt_create_qp(struct ib_pd *ibpd,
spin_lock_init(&qp->s_lock);
spin_lock_init(&qp->r_rq.lock);
atomic_set(&qp->refcount, 0);
+ atomic_set(&qp->local_ops_pending, 0);
init_waitqueue_head(&qp->wait);
init_timer(&qp->s_timer);
qp->s_timer.data = (unsigned long)qp;
INIT_LIST_HEAD(&qp->rspwait);
qp->state = IB_QPS_RESET;
qp->s_wq = swq;
- qp->s_size = init_attr->cap.max_send_wr + 1;
+ qp->s_size = sqsize;
qp->s_avail = init_attr->cap.max_send_wr;
qp->s_max_sge = init_attr->cap.max_send_sge;
if (init_attr->sq_sig_type == IB_SIGNAL_REQ_WR)
@@ -1332,7 +1336,8 @@ int rvt_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
attr->sq_psn = qp->s_next_psn & rdi->dparms.psn_mask;
attr->dest_qp_num = qp->remote_qpn;
attr->qp_access_flags = qp->qp_access_flags;
- attr->cap.max_send_wr = qp->s_size - 1;
+ attr->cap.max_send_wr = qp->s_size - 1 -
+ rdi->dparms.reserved_operations;
attr->cap.max_recv_wr = qp->ibqp.srq ? 0 : qp->r_rq.size - 1;
attr->cap.max_send_sge = qp->s_max_sge;
attr->cap.max_recv_sge = qp->r_rq.max_sge;
@@ -1440,25 +1445,116 @@ int rvt_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
}
/**
- * qp_get_savail - return number of avail send entries
+ * rvt_qp_valid_operation - validate post send wr request
+ * @qp - the qp
+ * @post-parms - the post send table for the driver
+ * @wr - the work request
+ *
+ * The routine validates the operation based on the
+ * validation table an returns the length of the operation
+ * which can extend beyond the ib_send_bw. Operation
+ * dependent flags key atomic operation validation.
*
+ * There is an exception for UD qps that validates the pd and
+ * overrides the length to include the additional UD specific
+ * length.
+ *
+ * Returns a negative error or the length of the work request
+ * for building the swqe.
+ */
+static inline int rvt_qp_valid_operation(
+ struct rvt_qp *qp,
+ const struct rvt_operation_params *post_parms,
+ struct ib_send_wr *wr)
+{
+ int len;
+
+ if (wr->opcode >= RVT_OPERATION_MAX || !post_parms[wr->opcode].length)
+ return -EINVAL;
+ if (!(post_parms[wr->opcode].qpt_support & BIT(qp->ibqp.qp_type)))
+ return -EINVAL;
+ if ((post_parms[wr->opcode].flags & RVT_OPERATION_PRIV) &&
+ ibpd_to_rvtpd(qp->ibqp.pd)->user)
+ return -EINVAL;
+ if (post_parms[wr->opcode].flags & RVT_OPERATION_ATOMIC_SGE &&
+ (wr->num_sge == 0 ||
+ wr->sg_list[0].length < sizeof(u64) ||
+ wr->sg_list[0].addr & (sizeof(u64) - 1)))
+ return -EINVAL;
+ if (post_parms[wr->opcode].flags & RVT_OPERATION_ATOMIC &&
+ !qp->s_max_rd_atomic)
+ return -EINVAL;
+ len = post_parms[wr->opcode].length;
+ /* UD specific */
+ if (qp->ibqp.qp_type != IB_QPT_UC &&
+ qp->ibqp.qp_type != IB_QPT_RC) {
+ if (qp->ibqp.pd != ud_wr(wr)->ah->pd)
+ return -EINVAL;
+ len = sizeof(struct ib_ud_wr);
+ }
+ return len;
+}
+
+/**
+ * rvt_qp_is_avail - determine queue capacity
* @qp - the qp
+ * @rdi - the rdmavt device
+ * @reserved_op - is reserved operation
*
* This assumes the s_hlock is held but the s_last
* qp variable is uncontrolled.
+ *
+ * For non reserved operations, the qp->s_avail
+ * may be changed.
+ *
+ * The return value is zero or a -ENOMEM.
*/
-static inline u32 qp_get_savail(struct rvt_qp *qp)
+static inline int rvt_qp_is_avail(
+ struct rvt_qp *qp,
+ struct rvt_dev_info *rdi,
+ bool reserved_op)
{
u32 slast;
- u32 ret;
-
+ u32 avail;
+ u32 reserved_used;
+
+ /* see rvt_qp_wqe_unreserve() */
+ smp_mb__before_atomic();
+ reserved_used = atomic_read(&qp->s_reserved_used);
+ if (unlikely(reserved_op)) {
+ /* see rvt_qp_wqe_unreserve() */
+ smp_mb__before_atomic();
+ if (reserved_used >= rdi->dparms.reserved_operations)
+ return -ENOMEM;
+ return 0;
+ }
+ /* non-reserved operations */
+ if (likely(qp->s_avail))
+ return 0;
smp_read_barrier_depends(); /* see rc.c */
slast = ACCESS_ONCE(qp->s_last);
if (qp->s_head >= slast)
- ret = qp->s_size - (qp->s_head - slast);
+ avail = qp->s_size - (qp->s_head - slast);
else
- ret = slast - qp->s_head;
- return ret - 1;
+ avail = slast - qp->s_head;
+
+ /* see rvt_qp_wqe_unreserve() */
+ smp_mb__before_atomic();
+ reserved_used = atomic_read(&qp->s_reserved_used);
+ avail = avail - 1 -
+ (rdi->dparms.reserved_operations - reserved_used);
+ /* insure we don't assign a negative s_avail */
+ if ((s32)avail <= 0)
+ return -ENOMEM;
+ qp->s_avail = avail;
+ if (WARN_ON(qp->s_avail >
+ (qp->s_size - 1 - rdi->dparms.reserved_operations)))
+ rvt_pr_err(rdi,
+ "More avail entries than QP RB size.\nQP: %u, size: %u, avail: %u\nhead: %u, tail: %u, cur: %u, acked: %u, last: %u",
+ qp->ibqp.qp_num, qp->s_size, qp->s_avail,
+ qp->s_head, qp->s_tail, qp->s_cur,
+ qp->s_acked, qp->s_last);
+ return 0;
}
/**
@@ -1480,49 +1576,64 @@ static int rvt_post_one_wr(struct rvt_qp *qp,
struct rvt_dev_info *rdi = ib_to_rvt(qp->ibqp.device);
u8 log_pmtu;
int ret;
+ size_t cplen;
+ bool reserved_op;
+ int local_ops_delayed = 0;
+
+ BUILD_BUG_ON(IB_QPT_MAX >= (sizeof(u32) * BITS_PER_BYTE));
/* IB spec says that num_sge == 0 is OK. */
if (unlikely(wr->num_sge > qp->s_max_sge))
return -EINVAL;
+ ret = rvt_qp_valid_operation(qp, rdi->post_parms, wr);
+ if (ret < 0)
+ return ret;
+ cplen = ret;
+
/*
- * Don't allow RDMA reads or atomic operations on UC or
- * undefined operations.
- * Make sure buffer is large enough to hold the result for atomics.
+ * Local operations include fast register and local invalidate.
+ * Fast register needs to be processed immediately because the
+ * registered lkey may be used by following work requests and the
+ * lkey needs to be valid at the time those requests are posted.
+ * Local invalidate can be processed immediately if fencing is
+ * not required and no previous local invalidate ops are pending.
+ * Signaled local operations that have been processed immediately
+ * need to have requests with "completion only" flags set posted
+ * to the send queue in order to generate completions.
*/
- if (qp->ibqp.qp_type == IB_QPT_UC) {
- if ((unsigned)wr->opcode >= IB_WR_RDMA_READ)
- return -EINVAL;
- } else if (qp->ibqp.qp_type != IB_QPT_RC) {
- /* Check IB_QPT_SMI, IB_QPT_GSI, IB_QPT_UD opcode */
- if (wr->opcode != IB_WR_SEND &&
- wr->opcode != IB_WR_SEND_WITH_IMM)
- return -EINVAL;
- /* Check UD destination address PD */
- if (qp->ibqp.pd != ud_wr(wr)->ah->pd)
+ if ((rdi->post_parms[wr->opcode].flags & RVT_OPERATION_LOCAL)) {
+ switch (wr->opcode) {
+ case IB_WR_REG_MR:
+ ret = rvt_fast_reg_mr(qp,
+ reg_wr(wr)->mr,
+ reg_wr(wr)->key,
+ reg_wr(wr)->access);
+ if (ret || !(wr->send_flags & IB_SEND_SIGNALED))
+ return ret;
+ break;
+ case IB_WR_LOCAL_INV:
+ if ((wr->send_flags & IB_SEND_FENCE) ||
+ atomic_read(&qp->local_ops_pending)) {
+ local_ops_delayed = 1;
+ } else {
+ ret = rvt_invalidate_rkey(
+ qp, wr->ex.invalidate_rkey);
+ if (ret || !(wr->send_flags & IB_SEND_SIGNALED))
+ return ret;
+ }
+ break;
+ default:
return -EINVAL;
- } else if ((unsigned)wr->opcode > IB_WR_ATOMIC_FETCH_AND_ADD) {
- return -EINVAL;
- } else if (wr->opcode >= IB_WR_ATOMIC_CMP_AND_SWP &&
- (wr->num_sge == 0 ||
- wr->sg_list[0].length < sizeof(u64) ||
- wr->sg_list[0].addr & (sizeof(u64) - 1))) {
- return -EINVAL;
- } else if (wr->opcode >= IB_WR_RDMA_READ && !qp->s_max_rd_atomic) {
- return -EINVAL;
+ }
}
+
+ reserved_op = rdi->post_parms[wr->opcode].flags &
+ RVT_OPERATION_USE_RESERVE;
/* check for avail */
- if (unlikely(!qp->s_avail)) {
- qp->s_avail = qp_get_savail(qp);
- if (WARN_ON(qp->s_avail > (qp->s_size - 1)))
- rvt_pr_err(rdi,
- "More avail entries than QP RB size.\nQP: %u, size: %u, avail: %u\nhead: %u, tail: %u, cur: %u, acked: %u, last: %u",
- qp->ibqp.qp_num, qp->s_size, qp->s_avail,
- qp->s_head, qp->s_tail, qp->s_cur,
- qp->s_acked, qp->s_last);
- if (!qp->s_avail)
- return -ENOMEM;
- }
+ ret = rvt_qp_is_avail(qp, rdi, reserved_op);
+ if (ret)
+ return ret;
next = qp->s_head + 1;
if (next >= qp->s_size)
next = 0;
@@ -1531,18 +1642,8 @@ static int rvt_post_one_wr(struct rvt_qp *qp,
pd = ibpd_to_rvtpd(qp->ibqp.pd);
wqe = rvt_get_swqe_ptr(qp, qp->s_head);
- if (qp->ibqp.qp_type != IB_QPT_UC &&
- qp->ibqp.qp_type != IB_QPT_RC)
- memcpy(&wqe->ud_wr, ud_wr(wr), sizeof(wqe->ud_wr));
- else if (wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM ||
- wr->opcode == IB_WR_RDMA_WRITE ||
- wr->opcode == IB_WR_RDMA_READ)
- memcpy(&wqe->rdma_wr, rdma_wr(wr), sizeof(wqe->rdma_wr));
- else if (wr->opcode == IB_WR_ATOMIC_CMP_AND_SWP ||
- wr->opcode == IB_WR_ATOMIC_FETCH_AND_ADD)
- memcpy(&wqe->atomic_wr, atomic_wr(wr), sizeof(wqe->atomic_wr));
- else
- memcpy(&wqe->wr, wr, sizeof(wqe->wr));
+ /* cplen has length from above */
+ memcpy(&wqe->wr, wr, cplen);
wqe->length = 0;
j = 0;
@@ -1585,14 +1686,29 @@ static int rvt_post_one_wr(struct rvt_qp *qp,
atomic_inc(&ibah_to_rvtah(ud_wr(wr)->ah)->refcount);
}
- wqe->ssn = qp->s_ssn++;
- wqe->psn = qp->s_next_psn;
- wqe->lpsn = wqe->psn +
- (wqe->length ? ((wqe->length - 1) >> log_pmtu) : 0);
- qp->s_next_psn = wqe->lpsn + 1;
+ if (rdi->post_parms[wr->opcode].flags & RVT_OPERATION_LOCAL) {
+ if (local_ops_delayed)
+ atomic_inc(&qp->local_ops_pending);
+ else
+ wqe->wr.send_flags |= RVT_SEND_COMPLETION_ONLY;
+ wqe->ssn = 0;
+ wqe->psn = 0;
+ wqe->lpsn = 0;
+ } else {
+ wqe->ssn = qp->s_ssn++;
+ wqe->psn = qp->s_next_psn;
+ wqe->lpsn = wqe->psn +
+ (wqe->length ?
+ ((wqe->length - 1) >> log_pmtu) :
+ 0);
+ qp->s_next_psn = wqe->lpsn + 1;
+ }
trace_rvt_post_one_wr(qp, wqe);
+ if (unlikely(reserved_op))
+ rvt_qp_wqe_reserve(qp, wqe);
+ else
+ qp->s_avail--;
smp_wmb(); /* see request builders */
- qp->s_avail--;
qp->s_head = next;
return 0;
diff --git a/drivers/infiniband/sw/rdmavt/vt.c b/drivers/infiniband/sw/rdmavt/vt.c
index 30c4fda7a05a..d430c2f7cec4 100644
--- a/drivers/infiniband/sw/rdmavt/vt.c
+++ b/drivers/infiniband/sw/rdmavt/vt.c
@@ -370,6 +370,7 @@ enum {
REG_USER_MR,
DEREG_MR,
ALLOC_MR,
+ MAP_MR_SG,
ALLOC_FMR,
MAP_PHYS_FMR,
UNMAP_FMR,
@@ -528,7 +529,8 @@ static noinline int check_support(struct rvt_dev_info *rdi, int verb)
post_send),
rvt_post_send))
if (!rdi->driver_f.schedule_send ||
- !rdi->driver_f.do_send)
+ !rdi->driver_f.do_send ||
+ !rdi->post_parms)
return -EINVAL;
break;
@@ -633,6 +635,12 @@ static noinline int check_support(struct rvt_dev_info *rdi, int verb)
rvt_alloc_mr);
break;
+ case MAP_MR_SG:
+ check_driver_override(rdi, offsetof(struct ib_device,
+ map_mr_sg),
+ rvt_map_mr_sg);
+ break;
+
case MAP_PHYS_FMR:
check_driver_override(rdi, offsetof(struct ib_device,
map_phys_fmr),
diff --git a/drivers/infiniband/sw/rxe/Kconfig b/drivers/infiniband/sw/rxe/Kconfig
new file mode 100644
index 000000000000..1e4e628fe7b0
--- /dev/null
+++ b/drivers/infiniband/sw/rxe/Kconfig
@@ -0,0 +1,24 @@
+config RDMA_RXE
+ tristate "Software RDMA over Ethernet (RoCE) driver"
+ depends on INET && PCI && INFINIBAND
+ depends on NET_UDP_TUNNEL
+ ---help---
+ This driver implements the InfiniBand RDMA transport over
+ the Linux network stack. It enables a system with a
+ standard Ethernet adapter to interoperate with a RoCE
+ adapter or with another system running the RXE driver.
+ Documentation on InfiniBand and RoCE can be downloaded at
+ www.infinibandta.org and www.openfabrics.org. (See also
+ siw which is a similar software driver for iWARP.)
+
+ The driver is split into two layers, one interfaces with the
+ Linux RDMA stack and implements a kernel or user space
+ verbs API. The user space verbs API requires a support
+ library named librxe which is loaded by the generic user
+ space verbs API, libibverbs. The other layer interfaces
+ with the Linux network stack at layer 3.
+
+ To configure and work with soft-RoCE driver please use the
+ following wiki page under "configure Soft-RoCE (RXE)" section:
+
+ https://github.com/SoftRoCE/rxe-dev/wiki/rxe-dev:-Home
diff --git a/drivers/infiniband/sw/rxe/Makefile b/drivers/infiniband/sw/rxe/Makefile
new file mode 100644
index 000000000000..3b3fb9d1c470
--- /dev/null
+++ b/drivers/infiniband/sw/rxe/Makefile
@@ -0,0 +1,24 @@
+obj-$(CONFIG_RDMA_RXE) += rdma_rxe.o
+
+rdma_rxe-y := \
+ rxe.o \
+ rxe_comp.o \
+ rxe_req.o \
+ rxe_resp.o \
+ rxe_recv.o \
+ rxe_pool.o \
+ rxe_queue.o \
+ rxe_verbs.o \
+ rxe_av.o \
+ rxe_srq.o \
+ rxe_qp.o \
+ rxe_cq.o \
+ rxe_mr.o \
+ rxe_dma.o \
+ rxe_opcode.o \
+ rxe_mmap.o \
+ rxe_icrc.o \
+ rxe_mcast.o \
+ rxe_task.o \
+ rxe_net.o \
+ rxe_sysfs.o
diff --git a/drivers/infiniband/sw/rxe/rxe.c b/drivers/infiniband/sw/rxe/rxe.c
new file mode 100644
index 000000000000..55f0e8f0ca79
--- /dev/null
+++ b/drivers/infiniband/sw/rxe/rxe.c
@@ -0,0 +1,386 @@
+/*
+ * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
+ * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include "rxe.h"
+#include "rxe_loc.h"
+
+MODULE_AUTHOR("Bob Pearson, Frank Zago, John Groves, Kamal Heib");
+MODULE_DESCRIPTION("Soft RDMA transport");
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_VERSION("0.2");
+
+/* free resources for all ports on a device */
+static void rxe_cleanup_ports(struct rxe_dev *rxe)
+{
+ kfree(rxe->port.pkey_tbl);
+ rxe->port.pkey_tbl = NULL;
+
+}
+
+/* free resources for a rxe device all objects created for this device must
+ * have been destroyed
+ */
+static void rxe_cleanup(struct rxe_dev *rxe)
+{
+ rxe_pool_cleanup(&rxe->uc_pool);
+ rxe_pool_cleanup(&rxe->pd_pool);
+ rxe_pool_cleanup(&rxe->ah_pool);
+ rxe_pool_cleanup(&rxe->srq_pool);
+ rxe_pool_cleanup(&rxe->qp_pool);
+ rxe_pool_cleanup(&rxe->cq_pool);
+ rxe_pool_cleanup(&rxe->mr_pool);
+ rxe_pool_cleanup(&rxe->mw_pool);
+ rxe_pool_cleanup(&rxe->mc_grp_pool);
+ rxe_pool_cleanup(&rxe->mc_elem_pool);
+
+ rxe_cleanup_ports(rxe);
+}
+
+/* called when all references have been dropped */
+void rxe_release(struct kref *kref)
+{
+ struct rxe_dev *rxe = container_of(kref, struct rxe_dev, ref_cnt);
+
+ rxe_cleanup(rxe);
+ ib_dealloc_device(&rxe->ib_dev);
+}
+
+void rxe_dev_put(struct rxe_dev *rxe)
+{
+ kref_put(&rxe->ref_cnt, rxe_release);
+}
+EXPORT_SYMBOL_GPL(rxe_dev_put);
+
+/* initialize rxe device parameters */
+static int rxe_init_device_param(struct rxe_dev *rxe)
+{
+ rxe->max_inline_data = RXE_MAX_INLINE_DATA;
+
+ rxe->attr.fw_ver = RXE_FW_VER;
+ rxe->attr.max_mr_size = RXE_MAX_MR_SIZE;
+ rxe->attr.page_size_cap = RXE_PAGE_SIZE_CAP;
+ rxe->attr.vendor_id = RXE_VENDOR_ID;
+ rxe->attr.vendor_part_id = RXE_VENDOR_PART_ID;
+ rxe->attr.hw_ver = RXE_HW_VER;
+ rxe->attr.max_qp = RXE_MAX_QP;
+ rxe->attr.max_qp_wr = RXE_MAX_QP_WR;
+ rxe->attr.device_cap_flags = RXE_DEVICE_CAP_FLAGS;
+ rxe->attr.max_sge = RXE_MAX_SGE;
+ rxe->attr.max_sge_rd = RXE_MAX_SGE_RD;
+ rxe->attr.max_cq = RXE_MAX_CQ;
+ rxe->attr.max_cqe = (1 << RXE_MAX_LOG_CQE) - 1;
+ rxe->attr.max_mr = RXE_MAX_MR;
+ rxe->attr.max_pd = RXE_MAX_PD;
+ rxe->attr.max_qp_rd_atom = RXE_MAX_QP_RD_ATOM;
+ rxe->attr.max_ee_rd_atom = RXE_MAX_EE_RD_ATOM;
+ rxe->attr.max_res_rd_atom = RXE_MAX_RES_RD_ATOM;
+ rxe->attr.max_qp_init_rd_atom = RXE_MAX_QP_INIT_RD_ATOM;
+ rxe->attr.max_ee_init_rd_atom = RXE_MAX_EE_INIT_RD_ATOM;
+ rxe->attr.atomic_cap = RXE_ATOMIC_CAP;
+ rxe->attr.max_ee = RXE_MAX_EE;
+ rxe->attr.max_rdd = RXE_MAX_RDD;
+ rxe->attr.max_mw = RXE_MAX_MW;
+ rxe->attr.max_raw_ipv6_qp = RXE_MAX_RAW_IPV6_QP;
+ rxe->attr.max_raw_ethy_qp = RXE_MAX_RAW_ETHY_QP;
+ rxe->attr.max_mcast_grp = RXE_MAX_MCAST_GRP;
+ rxe->attr.max_mcast_qp_attach = RXE_MAX_MCAST_QP_ATTACH;
+ rxe->attr.max_total_mcast_qp_attach = RXE_MAX_TOT_MCAST_QP_ATTACH;
+ rxe->attr.max_ah = RXE_MAX_AH;
+ rxe->attr.max_fmr = RXE_MAX_FMR;
+ rxe->attr.max_map_per_fmr = RXE_MAX_MAP_PER_FMR;
+ rxe->attr.max_srq = RXE_MAX_SRQ;
+ rxe->attr.max_srq_wr = RXE_MAX_SRQ_WR;
+ rxe->attr.max_srq_sge = RXE_MAX_SRQ_SGE;
+ rxe->attr.max_fast_reg_page_list_len = RXE_MAX_FMR_PAGE_LIST_LEN;
+ rxe->attr.max_pkeys = RXE_MAX_PKEYS;
+ rxe->attr.local_ca_ack_delay = RXE_LOCAL_CA_ACK_DELAY;
+
+ rxe->max_ucontext = RXE_MAX_UCONTEXT;
+
+ return 0;
+}
+
+/* initialize port attributes */
+static int rxe_init_port_param(struct rxe_port *port)
+{
+ port->attr.state = RXE_PORT_STATE;
+ port->attr.max_mtu = RXE_PORT_MAX_MTU;
+ port->attr.active_mtu = RXE_PORT_ACTIVE_MTU;
+ port->attr.gid_tbl_len = RXE_PORT_GID_TBL_LEN;
+ port->attr.port_cap_flags = RXE_PORT_PORT_CAP_FLAGS;
+ port->attr.max_msg_sz = RXE_PORT_MAX_MSG_SZ;
+ port->attr.bad_pkey_cntr = RXE_PORT_BAD_PKEY_CNTR;
+ port->attr.qkey_viol_cntr = RXE_PORT_QKEY_VIOL_CNTR;
+ port->attr.pkey_tbl_len = RXE_PORT_PKEY_TBL_LEN;
+ port->attr.lid = RXE_PORT_LID;
+ port->attr.sm_lid = RXE_PORT_SM_LID;
+ port->attr.lmc = RXE_PORT_LMC;
+ port->attr.max_vl_num = RXE_PORT_MAX_VL_NUM;
+ port->attr.sm_sl = RXE_PORT_SM_SL;
+ port->attr.subnet_timeout = RXE_PORT_SUBNET_TIMEOUT;
+ port->attr.init_type_reply = RXE_PORT_INIT_TYPE_REPLY;
+ port->attr.active_width = RXE_PORT_ACTIVE_WIDTH;
+ port->attr.active_speed = RXE_PORT_ACTIVE_SPEED;
+ port->attr.phys_state = RXE_PORT_PHYS_STATE;
+ port->mtu_cap =
+ ib_mtu_enum_to_int(RXE_PORT_ACTIVE_MTU);
+ port->subnet_prefix = cpu_to_be64(RXE_PORT_SUBNET_PREFIX);
+
+ return 0;
+}
+
+/* initialize port state, note IB convention that HCA ports are always
+ * numbered from 1
+ */
+static int rxe_init_ports(struct rxe_dev *rxe)
+{
+ struct rxe_port *port = &rxe->port;
+
+ rxe_init_port_param(port);
+
+ if (!port->attr.pkey_tbl_len || !port->attr.gid_tbl_len)
+ return -EINVAL;
+
+ port->pkey_tbl = kcalloc(port->attr.pkey_tbl_len,
+ sizeof(*port->pkey_tbl), GFP_KERNEL);
+
+ if (!port->pkey_tbl)
+ return -ENOMEM;
+
+ port->pkey_tbl[0] = 0xffff;
+ port->port_guid = rxe->ifc_ops->port_guid(rxe);
+
+ spin_lock_init(&port->port_lock);
+
+ return 0;
+}
+
+/* init pools of managed objects */
+static int rxe_init_pools(struct rxe_dev *rxe)
+{
+ int err;
+
+ err = rxe_pool_init(rxe, &rxe->uc_pool, RXE_TYPE_UC,
+ rxe->max_ucontext);
+ if (err)
+ goto err1;
+
+ err = rxe_pool_init(rxe, &rxe->pd_pool, RXE_TYPE_PD,
+ rxe->attr.max_pd);
+ if (err)
+ goto err2;
+
+ err = rxe_pool_init(rxe, &rxe->ah_pool, RXE_TYPE_AH,
+ rxe->attr.max_ah);
+ if (err)
+ goto err3;
+
+ err = rxe_pool_init(rxe, &rxe->srq_pool, RXE_TYPE_SRQ,
+ rxe->attr.max_srq);
+ if (err)
+ goto err4;
+
+ err = rxe_pool_init(rxe, &rxe->qp_pool, RXE_TYPE_QP,
+ rxe->attr.max_qp);
+ if (err)
+ goto err5;
+
+ err = rxe_pool_init(rxe, &rxe->cq_pool, RXE_TYPE_CQ,
+ rxe->attr.max_cq);
+ if (err)
+ goto err6;
+
+ err = rxe_pool_init(rxe, &rxe->mr_pool, RXE_TYPE_MR,
+ rxe->attr.max_mr);
+ if (err)
+ goto err7;
+
+ err = rxe_pool_init(rxe, &rxe->mw_pool, RXE_TYPE_MW,
+ rxe->attr.max_mw);
+ if (err)
+ goto err8;
+
+ err = rxe_pool_init(rxe, &rxe->mc_grp_pool, RXE_TYPE_MC_GRP,
+ rxe->attr.max_mcast_grp);
+ if (err)
+ goto err9;
+
+ err = rxe_pool_init(rxe, &rxe->mc_elem_pool, RXE_TYPE_MC_ELEM,
+ rxe->attr.max_total_mcast_qp_attach);
+ if (err)
+ goto err10;
+
+ return 0;
+
+err10:
+ rxe_pool_cleanup(&rxe->mc_grp_pool);
+err9:
+ rxe_pool_cleanup(&rxe->mw_pool);
+err8:
+ rxe_pool_cleanup(&rxe->mr_pool);
+err7:
+ rxe_pool_cleanup(&rxe->cq_pool);
+err6:
+ rxe_pool_cleanup(&rxe->qp_pool);
+err5:
+ rxe_pool_cleanup(&rxe->srq_pool);
+err4:
+ rxe_pool_cleanup(&rxe->ah_pool);
+err3:
+ rxe_pool_cleanup(&rxe->pd_pool);
+err2:
+ rxe_pool_cleanup(&rxe->uc_pool);
+err1:
+ return err;
+}
+
+/* initialize rxe device state */
+static int rxe_init(struct rxe_dev *rxe)
+{
+ int err;
+
+ /* init default device parameters */
+ rxe_init_device_param(rxe);
+
+ err = rxe_init_ports(rxe);
+ if (err)
+ goto err1;
+
+ err = rxe_init_pools(rxe);
+ if (err)
+ goto err2;
+
+ /* init pending mmap list */
+ spin_lock_init(&rxe->mmap_offset_lock);
+ spin_lock_init(&rxe->pending_lock);
+ INIT_LIST_HEAD(&rxe->pending_mmaps);
+ INIT_LIST_HEAD(&rxe->list);
+
+ mutex_init(&rxe->usdev_lock);
+
+ return 0;
+
+err2:
+ rxe_cleanup_ports(rxe);
+err1:
+ return err;
+}
+
+int rxe_set_mtu(struct rxe_dev *rxe, unsigned int ndev_mtu)
+{
+ struct rxe_port *port = &rxe->port;
+ enum ib_mtu mtu;
+
+ mtu = eth_mtu_int_to_enum(ndev_mtu);
+
+ /* Make sure that new MTU in range */
+ mtu = mtu ? min_t(enum ib_mtu, mtu, RXE_PORT_MAX_MTU) : IB_MTU_256;
+
+ port->attr.active_mtu = mtu;
+ port->mtu_cap = ib_mtu_enum_to_int(mtu);
+
+ return 0;
+}
+EXPORT_SYMBOL(rxe_set_mtu);
+
+/* called by ifc layer to create new rxe device.
+ * The caller should allocate memory for rxe by calling ib_alloc_device.
+ */
+int rxe_add(struct rxe_dev *rxe, unsigned int mtu)
+{
+ int err;
+
+ kref_init(&rxe->ref_cnt);
+
+ err = rxe_init(rxe);
+ if (err)
+ goto err1;
+
+ err = rxe_set_mtu(rxe, mtu);
+ if (err)
+ goto err1;
+
+ err = rxe_register_device(rxe);
+ if (err)
+ goto err1;
+
+ return 0;
+
+err1:
+ rxe_dev_put(rxe);
+ return err;
+}
+EXPORT_SYMBOL(rxe_add);
+
+/* called by the ifc layer to remove a device */
+void rxe_remove(struct rxe_dev *rxe)
+{
+ rxe_unregister_device(rxe);
+
+ rxe_dev_put(rxe);
+}
+EXPORT_SYMBOL(rxe_remove);
+
+static int __init rxe_module_init(void)
+{
+ int err;
+
+ /* initialize slab caches for managed objects */
+ err = rxe_cache_init();
+ if (err) {
+ pr_err("rxe: unable to init object pools\n");
+ return err;
+ }
+
+ err = rxe_net_init();
+ if (err) {
+ pr_err("rxe: unable to init\n");
+ rxe_cache_exit();
+ return err;
+ }
+ pr_info("rxe: loaded\n");
+
+ return 0;
+}
+
+static void __exit rxe_module_exit(void)
+{
+ rxe_remove_all();
+ rxe_net_exit();
+ rxe_cache_exit();
+
+ pr_info("rxe: unloaded\n");
+}
+
+module_init(rxe_module_init);
+module_exit(rxe_module_exit);
diff --git a/drivers/infiniband/sw/rxe/rxe.h b/drivers/infiniband/sw/rxe/rxe.h
new file mode 100644
index 000000000000..12c71c549f97
--- /dev/null
+++ b/drivers/infiniband/sw/rxe/rxe.h
@@ -0,0 +1,77 @@
+/*
+ * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
+ * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef RXE_H
+#define RXE_H
+
+#include <linux/module.h>
+#include <linux/skbuff.h>
+#include <linux/crc32.h>
+
+#include <rdma/ib_verbs.h>
+#include <rdma/ib_user_verbs.h>
+#include <rdma/ib_pack.h>
+#include <rdma/ib_smi.h>
+#include <rdma/ib_umem.h>
+#include <rdma/ib_cache.h>
+#include <rdma/ib_addr.h>
+
+#include "rxe_net.h"
+#include "rxe_opcode.h"
+#include "rxe_hdr.h"
+#include "rxe_param.h"
+#include "rxe_verbs.h"
+
+#define RXE_UVERBS_ABI_VERSION (1)
+
+#define IB_PHYS_STATE_LINK_UP (5)
+#define IB_PHYS_STATE_LINK_DOWN (3)
+
+#define RXE_ROCE_V2_SPORT (0xc000)
+
+int rxe_set_mtu(struct rxe_dev *rxe, unsigned int dev_mtu);
+
+int rxe_add(struct rxe_dev *rxe, unsigned int mtu);
+void rxe_remove(struct rxe_dev *rxe);
+void rxe_remove_all(void);
+
+int rxe_rcv(struct sk_buff *skb);
+
+void rxe_dev_put(struct rxe_dev *rxe);
+struct rxe_dev *net_to_rxe(struct net_device *ndev);
+struct rxe_dev *get_rxe_by_name(const char* name);
+
+void rxe_port_up(struct rxe_dev *rxe);
+void rxe_port_down(struct rxe_dev *rxe);
+
+#endif /* RXE_H */
diff --git a/drivers/infiniband/sw/rxe/rxe_av.c b/drivers/infiniband/sw/rxe/rxe_av.c
new file mode 100644
index 000000000000..5c9474212d4e
--- /dev/null
+++ b/drivers/infiniband/sw/rxe/rxe_av.c
@@ -0,0 +1,98 @@
+/*
+ * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
+ * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include "rxe.h"
+#include "rxe_loc.h"
+
+int rxe_av_chk_attr(struct rxe_dev *rxe, struct ib_ah_attr *attr)
+{
+ struct rxe_port *port;
+
+ if (attr->port_num != 1) {
+ pr_info("rxe: invalid port_num = %d\n", attr->port_num);
+ return -EINVAL;
+ }
+
+ port = &rxe->port;
+
+ if (attr->ah_flags & IB_AH_GRH) {
+ if (attr->grh.sgid_index > port->attr.gid_tbl_len) {
+ pr_info("rxe: invalid sgid index = %d\n",
+ attr->grh.sgid_index);
+ return -EINVAL;
+ }
+ }
+
+ return 0;
+}
+
+int rxe_av_from_attr(struct rxe_dev *rxe, u8 port_num,
+ struct rxe_av *av, struct ib_ah_attr *attr)
+{
+ memset(av, 0, sizeof(*av));
+ memcpy(&av->grh, &attr->grh, sizeof(attr->grh));
+ av->port_num = port_num;
+ return 0;
+}
+
+int rxe_av_to_attr(struct rxe_dev *rxe, struct rxe_av *av,
+ struct ib_ah_attr *attr)
+{
+ memcpy(&attr->grh, &av->grh, sizeof(av->grh));
+ attr->port_num = av->port_num;
+ return 0;
+}
+
+int rxe_av_fill_ip_info(struct rxe_dev *rxe,
+ struct rxe_av *av,
+ struct ib_ah_attr *attr,
+ struct ib_gid_attr *sgid_attr,
+ union ib_gid *sgid)
+{
+ rdma_gid2ip(&av->sgid_addr._sockaddr, sgid);
+ rdma_gid2ip(&av->dgid_addr._sockaddr, &attr->grh.dgid);
+ av->network_type = ib_gid_to_network_type(sgid_attr->gid_type, sgid);
+
+ return 0;
+}
+
+struct rxe_av *rxe_get_av(struct rxe_pkt_info *pkt)
+{
+ if (!pkt || !pkt->qp)
+ return NULL;
+
+ if (qp_type(pkt->qp) == IB_QPT_RC || qp_type(pkt->qp) == IB_QPT_UC)
+ return &pkt->qp->pri_av;
+
+ return (pkt->wqe) ? &pkt->wqe->av : NULL;
+}
diff --git a/drivers/infiniband/sw/rxe/rxe_comp.c b/drivers/infiniband/sw/rxe/rxe_comp.c
new file mode 100644
index 000000000000..36f67de44095
--- /dev/null
+++ b/drivers/infiniband/sw/rxe/rxe_comp.c
@@ -0,0 +1,734 @@
+/*
+ * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
+ * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/skbuff.h>
+
+#include "rxe.h"
+#include "rxe_loc.h"
+#include "rxe_queue.h"
+#include "rxe_task.h"
+
+enum comp_state {
+ COMPST_GET_ACK,
+ COMPST_GET_WQE,
+ COMPST_COMP_WQE,
+ COMPST_COMP_ACK,
+ COMPST_CHECK_PSN,
+ COMPST_CHECK_ACK,
+ COMPST_READ,
+ COMPST_ATOMIC,
+ COMPST_WRITE_SEND,
+ COMPST_UPDATE_COMP,
+ COMPST_ERROR_RETRY,
+ COMPST_RNR_RETRY,
+ COMPST_ERROR,
+ COMPST_EXIT, /* We have an issue, and we want to rerun the completer */
+ COMPST_DONE, /* The completer finished successflly */
+};
+
+static char *comp_state_name[] = {
+ [COMPST_GET_ACK] = "GET ACK",
+ [COMPST_GET_WQE] = "GET WQE",
+ [COMPST_COMP_WQE] = "COMP WQE",
+ [COMPST_COMP_ACK] = "COMP ACK",
+ [COMPST_CHECK_PSN] = "CHECK PSN",
+ [COMPST_CHECK_ACK] = "CHECK ACK",
+ [COMPST_READ] = "READ",
+ [COMPST_ATOMIC] = "ATOMIC",
+ [COMPST_WRITE_SEND] = "WRITE/SEND",
+ [COMPST_UPDATE_COMP] = "UPDATE COMP",
+ [COMPST_ERROR_RETRY] = "ERROR RETRY",
+ [COMPST_RNR_RETRY] = "RNR RETRY",
+ [COMPST_ERROR] = "ERROR",
+ [COMPST_EXIT] = "EXIT",
+ [COMPST_DONE] = "DONE",
+};
+
+static unsigned long rnrnak_usec[32] = {
+ [IB_RNR_TIMER_655_36] = 655360,
+ [IB_RNR_TIMER_000_01] = 10,
+ [IB_RNR_TIMER_000_02] = 20,
+ [IB_RNR_TIMER_000_03] = 30,
+ [IB_RNR_TIMER_000_04] = 40,
+ [IB_RNR_TIMER_000_06] = 60,
+ [IB_RNR_TIMER_000_08] = 80,
+ [IB_RNR_TIMER_000_12] = 120,
+ [IB_RNR_TIMER_000_16] = 160,
+ [IB_RNR_TIMER_000_24] = 240,
+ [IB_RNR_TIMER_000_32] = 320,
+ [IB_RNR_TIMER_000_48] = 480,
+ [IB_RNR_TIMER_000_64] = 640,
+ [IB_RNR_TIMER_000_96] = 960,
+ [IB_RNR_TIMER_001_28] = 1280,
+ [IB_RNR_TIMER_001_92] = 1920,
+ [IB_RNR_TIMER_002_56] = 2560,
+ [IB_RNR_TIMER_003_84] = 3840,
+ [IB_RNR_TIMER_005_12] = 5120,
+ [IB_RNR_TIMER_007_68] = 7680,
+ [IB_RNR_TIMER_010_24] = 10240,
+ [IB_RNR_TIMER_015_36] = 15360,
+ [IB_RNR_TIMER_020_48] = 20480,
+ [IB_RNR_TIMER_030_72] = 30720,
+ [IB_RNR_TIMER_040_96] = 40960,
+ [IB_RNR_TIMER_061_44] = 61410,
+ [IB_RNR_TIMER_081_92] = 81920,
+ [IB_RNR_TIMER_122_88] = 122880,
+ [IB_RNR_TIMER_163_84] = 163840,
+ [IB_RNR_TIMER_245_76] = 245760,
+ [IB_RNR_TIMER_327_68] = 327680,
+ [IB_RNR_TIMER_491_52] = 491520,
+};
+
+static inline unsigned long rnrnak_jiffies(u8 timeout)
+{
+ return max_t(unsigned long,
+ usecs_to_jiffies(rnrnak_usec[timeout]), 1);
+}
+
+static enum ib_wc_opcode wr_to_wc_opcode(enum ib_wr_opcode opcode)
+{
+ switch (opcode) {
+ case IB_WR_RDMA_WRITE: return IB_WC_RDMA_WRITE;
+ case IB_WR_RDMA_WRITE_WITH_IMM: return IB_WC_RDMA_WRITE;
+ case IB_WR_SEND: return IB_WC_SEND;
+ case IB_WR_SEND_WITH_IMM: return IB_WC_SEND;
+ case IB_WR_RDMA_READ: return IB_WC_RDMA_READ;
+ case IB_WR_ATOMIC_CMP_AND_SWP: return IB_WC_COMP_SWAP;
+ case IB_WR_ATOMIC_FETCH_AND_ADD: return IB_WC_FETCH_ADD;
+ case IB_WR_LSO: return IB_WC_LSO;
+ case IB_WR_SEND_WITH_INV: return IB_WC_SEND;
+ case IB_WR_RDMA_READ_WITH_INV: return IB_WC_RDMA_READ;
+ case IB_WR_LOCAL_INV: return IB_WC_LOCAL_INV;
+ case IB_WR_REG_MR: return IB_WC_REG_MR;
+
+ default:
+ return 0xff;
+ }
+}
+
+void retransmit_timer(unsigned long data)
+{
+ struct rxe_qp *qp = (struct rxe_qp *)data;
+
+ if (qp->valid) {
+ qp->comp.timeout = 1;
+ rxe_run_task(&qp->comp.task, 1);
+ }
+}
+
+void rxe_comp_queue_pkt(struct rxe_dev *rxe, struct rxe_qp *qp,
+ struct sk_buff *skb)
+{
+ int must_sched;
+
+ skb_queue_tail(&qp->resp_pkts, skb);
+
+ must_sched = skb_queue_len(&qp->resp_pkts) > 1;
+ rxe_run_task(&qp->comp.task, must_sched);
+}
+
+static inline enum comp_state get_wqe(struct rxe_qp *qp,
+ struct rxe_pkt_info *pkt,
+ struct rxe_send_wqe **wqe_p)
+{
+ struct rxe_send_wqe *wqe;
+
+ /* we come here whether or not we found a response packet to see if
+ * there are any posted WQEs
+ */
+ wqe = queue_head(qp->sq.queue);
+ *wqe_p = wqe;
+
+ /* no WQE or requester has not started it yet */
+ if (!wqe || wqe->state == wqe_state_posted)
+ return pkt ? COMPST_DONE : COMPST_EXIT;
+
+ /* WQE does not require an ack */
+ if (wqe->state == wqe_state_done)
+ return COMPST_COMP_WQE;
+
+ /* WQE caused an error */
+ if (wqe->state == wqe_state_error)
+ return COMPST_ERROR;
+
+ /* we have a WQE, if we also have an ack check its PSN */
+ return pkt ? COMPST_CHECK_PSN : COMPST_EXIT;
+}
+
+static inline void reset_retry_counters(struct rxe_qp *qp)
+{
+ qp->comp.retry_cnt = qp->attr.retry_cnt;
+ qp->comp.rnr_retry = qp->attr.rnr_retry;
+}
+
+static inline enum comp_state check_psn(struct rxe_qp *qp,
+ struct rxe_pkt_info *pkt,
+ struct rxe_send_wqe *wqe)
+{
+ s32 diff;
+
+ /* check to see if response is past the oldest WQE. if it is, complete
+ * send/write or error read/atomic
+ */
+ diff = psn_compare(pkt->psn, wqe->last_psn);
+ if (diff > 0) {
+ if (wqe->state == wqe_state_pending) {
+ if (wqe->mask & WR_ATOMIC_OR_READ_MASK)
+ return COMPST_ERROR_RETRY;
+
+ reset_retry_counters(qp);
+ return COMPST_COMP_WQE;
+ } else {
+ return COMPST_DONE;
+ }
+ }
+
+ /* compare response packet to expected response */
+ diff = psn_compare(pkt->psn, qp->comp.psn);
+ if (diff < 0) {
+ /* response is most likely a retried packet if it matches an
+ * uncompleted WQE go complete it else ignore it
+ */
+ if (pkt->psn == wqe->last_psn)
+ return COMPST_COMP_ACK;
+ else
+ return COMPST_DONE;
+ } else if ((diff > 0) && (wqe->mask & WR_ATOMIC_OR_READ_MASK)) {
+ return COMPST_ERROR_RETRY;
+ } else {
+ return COMPST_CHECK_ACK;
+ }
+}
+
+static inline enum comp_state check_ack(struct rxe_qp *qp,
+ struct rxe_pkt_info *pkt,
+ struct rxe_send_wqe *wqe)
+{
+ unsigned int mask = pkt->mask;
+ u8 syn;
+
+ /* Check the sequence only */
+ switch (qp->comp.opcode) {
+ case -1:
+ /* Will catch all *_ONLY cases. */
+ if (!(mask & RXE_START_MASK))
+ return COMPST_ERROR;
+
+ break;
+
+ case IB_OPCODE_RC_RDMA_READ_RESPONSE_FIRST:
+ case IB_OPCODE_RC_RDMA_READ_RESPONSE_MIDDLE:
+ if (pkt->opcode != IB_OPCODE_RC_RDMA_READ_RESPONSE_MIDDLE &&
+ pkt->opcode != IB_OPCODE_RC_RDMA_READ_RESPONSE_LAST) {
+ return COMPST_ERROR;
+ }
+ break;
+ default:
+ WARN_ON(1);
+ }
+
+ /* Check operation validity. */
+ switch (pkt->opcode) {
+ case IB_OPCODE_RC_RDMA_READ_RESPONSE_FIRST:
+ case IB_OPCODE_RC_RDMA_READ_RESPONSE_LAST:
+ case IB_OPCODE_RC_RDMA_READ_RESPONSE_ONLY:
+ syn = aeth_syn(pkt);
+
+ if ((syn & AETH_TYPE_MASK) != AETH_ACK)
+ return COMPST_ERROR;
+
+ /* Fall through (IB_OPCODE_RC_RDMA_READ_RESPONSE_MIDDLE
+ * doesn't have an AETH)
+ */
+ case IB_OPCODE_RC_RDMA_READ_RESPONSE_MIDDLE:
+ if (wqe->wr.opcode != IB_WR_RDMA_READ &&
+ wqe->wr.opcode != IB_WR_RDMA_READ_WITH_INV) {
+ return COMPST_ERROR;
+ }
+ reset_retry_counters(qp);
+ return COMPST_READ;
+
+ case IB_OPCODE_RC_ATOMIC_ACKNOWLEDGE:
+ syn = aeth_syn(pkt);
+
+ if ((syn & AETH_TYPE_MASK) != AETH_ACK)
+ return COMPST_ERROR;
+
+ if (wqe->wr.opcode != IB_WR_ATOMIC_CMP_AND_SWP &&
+ wqe->wr.opcode != IB_WR_ATOMIC_FETCH_AND_ADD)
+ return COMPST_ERROR;
+ reset_retry_counters(qp);
+ return COMPST_ATOMIC;
+
+ case IB_OPCODE_RC_ACKNOWLEDGE:
+ syn = aeth_syn(pkt);
+ switch (syn & AETH_TYPE_MASK) {
+ case AETH_ACK:
+ reset_retry_counters(qp);
+ return COMPST_WRITE_SEND;
+
+ case AETH_RNR_NAK:
+ return COMPST_RNR_RETRY;
+
+ case AETH_NAK:
+ switch (syn) {
+ case AETH_NAK_PSN_SEQ_ERROR:
+ /* a nak implicitly acks all packets with psns
+ * before
+ */
+ if (psn_compare(pkt->psn, qp->comp.psn) > 0) {
+ qp->comp.psn = pkt->psn;
+ if (qp->req.wait_psn) {
+ qp->req.wait_psn = 0;
+ rxe_run_task(&qp->req.task, 1);
+ }
+ }
+ return COMPST_ERROR_RETRY;
+
+ case AETH_NAK_INVALID_REQ:
+ wqe->status = IB_WC_REM_INV_REQ_ERR;
+ return COMPST_ERROR;
+
+ case AETH_NAK_REM_ACC_ERR:
+ wqe->status = IB_WC_REM_ACCESS_ERR;
+ return COMPST_ERROR;
+
+ case AETH_NAK_REM_OP_ERR:
+ wqe->status = IB_WC_REM_OP_ERR;
+ return COMPST_ERROR;
+
+ default:
+ pr_warn("unexpected nak %x\n", syn);
+ wqe->status = IB_WC_REM_OP_ERR;
+ return COMPST_ERROR;
+ }
+
+ default:
+ return COMPST_ERROR;
+ }
+ break;
+
+ default:
+ pr_warn("unexpected opcode\n");
+ }
+
+ return COMPST_ERROR;
+}
+
+static inline enum comp_state do_read(struct rxe_qp *qp,
+ struct rxe_pkt_info *pkt,
+ struct rxe_send_wqe *wqe)
+{
+ struct rxe_dev *rxe = to_rdev(qp->ibqp.device);
+ int ret;
+
+ ret = copy_data(rxe, qp->pd, IB_ACCESS_LOCAL_WRITE,
+ &wqe->dma, payload_addr(pkt),
+ payload_size(pkt), to_mem_obj, NULL);
+ if (ret)
+ return COMPST_ERROR;
+
+ if (wqe->dma.resid == 0 && (pkt->mask & RXE_END_MASK))
+ return COMPST_COMP_ACK;
+ else
+ return COMPST_UPDATE_COMP;
+}
+
+static inline enum comp_state do_atomic(struct rxe_qp *qp,
+ struct rxe_pkt_info *pkt,
+ struct rxe_send_wqe *wqe)
+{
+ struct rxe_dev *rxe = to_rdev(qp->ibqp.device);
+ int ret;
+
+ u64 atomic_orig = atmack_orig(pkt);
+
+ ret = copy_data(rxe, qp->pd, IB_ACCESS_LOCAL_WRITE,
+ &wqe->dma, &atomic_orig,
+ sizeof(u64), to_mem_obj, NULL);
+ if (ret)
+ return COMPST_ERROR;
+ else
+ return COMPST_COMP_ACK;
+}
+
+static void make_send_cqe(struct rxe_qp *qp, struct rxe_send_wqe *wqe,
+ struct rxe_cqe *cqe)
+{
+ memset(cqe, 0, sizeof(*cqe));
+
+ if (!qp->is_user) {
+ struct ib_wc *wc = &cqe->ibwc;
+
+ wc->wr_id = wqe->wr.wr_id;
+ wc->status = wqe->status;
+ wc->opcode = wr_to_wc_opcode(wqe->wr.opcode);
+ if (wqe->wr.opcode == IB_WR_RDMA_WRITE_WITH_IMM ||
+ wqe->wr.opcode == IB_WR_SEND_WITH_IMM)
+ wc->wc_flags = IB_WC_WITH_IMM;
+ wc->byte_len = wqe->dma.length;
+ wc->qp = &qp->ibqp;
+ } else {
+ struct ib_uverbs_wc *uwc = &cqe->uibwc;
+
+ uwc->wr_id = wqe->wr.wr_id;
+ uwc->status = wqe->status;
+ uwc->opcode = wr_to_wc_opcode(wqe->wr.opcode);
+ if (wqe->wr.opcode == IB_WR_RDMA_WRITE_WITH_IMM ||
+ wqe->wr.opcode == IB_WR_SEND_WITH_IMM)
+ uwc->wc_flags = IB_WC_WITH_IMM;
+ uwc->byte_len = wqe->dma.length;
+ uwc->qp_num = qp->ibqp.qp_num;
+ }
+}
+
+static void do_complete(struct rxe_qp *qp, struct rxe_send_wqe *wqe)
+{
+ struct rxe_cqe cqe;
+
+ if ((qp->sq_sig_type == IB_SIGNAL_ALL_WR) ||
+ (wqe->wr.send_flags & IB_SEND_SIGNALED) ||
+ (qp->req.state == QP_STATE_ERROR)) {
+ make_send_cqe(qp, wqe, &cqe);
+ rxe_cq_post(qp->scq, &cqe, 0);
+ }
+
+ advance_consumer(qp->sq.queue);
+
+ /*
+ * we completed something so let req run again
+ * if it is trying to fence
+ */
+ if (qp->req.wait_fence) {
+ qp->req.wait_fence = 0;
+ rxe_run_task(&qp->req.task, 1);
+ }
+}
+
+static inline enum comp_state complete_ack(struct rxe_qp *qp,
+ struct rxe_pkt_info *pkt,
+ struct rxe_send_wqe *wqe)
+{
+ unsigned long flags;
+
+ if (wqe->has_rd_atomic) {
+ wqe->has_rd_atomic = 0;
+ atomic_inc(&qp->req.rd_atomic);
+ if (qp->req.need_rd_atomic) {
+ qp->comp.timeout_retry = 0;
+ qp->req.need_rd_atomic = 0;
+ rxe_run_task(&qp->req.task, 1);
+ }
+ }
+
+ if (unlikely(qp->req.state == QP_STATE_DRAIN)) {
+ /* state_lock used by requester & completer */
+ spin_lock_irqsave(&qp->state_lock, flags);
+ if ((qp->req.state == QP_STATE_DRAIN) &&
+ (qp->comp.psn == qp->req.psn)) {
+ qp->req.state = QP_STATE_DRAINED;
+ spin_unlock_irqrestore(&qp->state_lock, flags);
+
+ if (qp->ibqp.event_handler) {
+ struct ib_event ev;
+
+ ev.device = qp->ibqp.device;
+ ev.element.qp = &qp->ibqp;
+ ev.event = IB_EVENT_SQ_DRAINED;
+ qp->ibqp.event_handler(&ev,
+ qp->ibqp.qp_context);
+ }
+ } else {
+ spin_unlock_irqrestore(&qp->state_lock, flags);
+ }
+ }
+
+ do_complete(qp, wqe);
+
+ if (psn_compare(pkt->psn, qp->comp.psn) >= 0)
+ return COMPST_UPDATE_COMP;
+ else
+ return COMPST_DONE;
+}
+
+static inline enum comp_state complete_wqe(struct rxe_qp *qp,
+ struct rxe_pkt_info *pkt,
+ struct rxe_send_wqe *wqe)
+{
+ qp->comp.opcode = -1;
+
+ if (pkt) {
+ if (psn_compare(pkt->psn, qp->comp.psn) >= 0)
+ qp->comp.psn = (pkt->psn + 1) & BTH_PSN_MASK;
+
+ if (qp->req.wait_psn) {
+ qp->req.wait_psn = 0;
+ rxe_run_task(&qp->req.task, 1);
+ }
+ }
+
+ do_complete(qp, wqe);
+
+ return COMPST_GET_WQE;
+}
+
+int rxe_completer(void *arg)
+{
+ struct rxe_qp *qp = (struct rxe_qp *)arg;
+ struct rxe_send_wqe *wqe = wqe;
+ struct sk_buff *skb = NULL;
+ struct rxe_pkt_info *pkt = NULL;
+ enum comp_state state;
+
+ if (!qp->valid) {
+ while ((skb = skb_dequeue(&qp->resp_pkts))) {
+ rxe_drop_ref(qp);
+ kfree_skb(skb);
+ }
+ skb = NULL;
+ pkt = NULL;
+
+ while (queue_head(qp->sq.queue))
+ advance_consumer(qp->sq.queue);
+
+ goto exit;
+ }
+
+ if (qp->req.state == QP_STATE_ERROR) {
+ while ((skb = skb_dequeue(&qp->resp_pkts))) {
+ rxe_drop_ref(qp);
+ kfree_skb(skb);
+ }
+ skb = NULL;
+ pkt = NULL;
+
+ while ((wqe = queue_head(qp->sq.queue))) {
+ wqe->status = IB_WC_WR_FLUSH_ERR;
+ do_complete(qp, wqe);
+ }
+
+ goto exit;
+ }
+
+ if (qp->req.state == QP_STATE_RESET) {
+ while ((skb = skb_dequeue(&qp->resp_pkts))) {
+ rxe_drop_ref(qp);
+ kfree_skb(skb);
+ }
+ skb = NULL;
+ pkt = NULL;
+
+ while (queue_head(qp->sq.queue))
+ advance_consumer(qp->sq.queue);
+
+ goto exit;
+ }
+
+ if (qp->comp.timeout) {
+ qp->comp.timeout_retry = 1;
+ qp->comp.timeout = 0;
+ } else {
+ qp->comp.timeout_retry = 0;
+ }
+
+ if (qp->req.need_retry)
+ goto exit;
+
+ state = COMPST_GET_ACK;
+
+ while (1) {
+ pr_debug("state = %s\n", comp_state_name[state]);
+ switch (state) {
+ case COMPST_GET_ACK:
+ skb = skb_dequeue(&qp->resp_pkts);
+ if (skb) {
+ pkt = SKB_TO_PKT(skb);
+ qp->comp.timeout_retry = 0;
+ }
+ state = COMPST_GET_WQE;
+ break;
+
+ case COMPST_GET_WQE:
+ state = get_wqe(qp, pkt, &wqe);
+ break;
+
+ case COMPST_CHECK_PSN:
+ state = check_psn(qp, pkt, wqe);
+ break;
+
+ case COMPST_CHECK_ACK:
+ state = check_ack(qp, pkt, wqe);
+ break;
+
+ case COMPST_READ:
+ state = do_read(qp, pkt, wqe);
+ break;
+
+ case COMPST_ATOMIC:
+ state = do_atomic(qp, pkt, wqe);
+ break;
+
+ case COMPST_WRITE_SEND:
+ if (wqe->state == wqe_state_pending &&
+ wqe->last_psn == pkt->psn)
+ state = COMPST_COMP_ACK;
+ else
+ state = COMPST_UPDATE_COMP;
+ break;
+
+ case COMPST_COMP_ACK:
+ state = complete_ack(qp, pkt, wqe);
+ break;
+
+ case COMPST_COMP_WQE:
+ state = complete_wqe(qp, pkt, wqe);
+ break;
+
+ case COMPST_UPDATE_COMP:
+ if (pkt->mask & RXE_END_MASK)
+ qp->comp.opcode = -1;
+ else
+ qp->comp.opcode = pkt->opcode;
+
+ if (psn_compare(pkt->psn, qp->comp.psn) >= 0)
+ qp->comp.psn = (pkt->psn + 1) & BTH_PSN_MASK;
+
+ if (qp->req.wait_psn) {
+ qp->req.wait_psn = 0;
+ rxe_run_task(&qp->req.task, 1);
+ }
+
+ state = COMPST_DONE;
+ break;
+
+ case COMPST_DONE:
+ if (pkt) {
+ rxe_drop_ref(pkt->qp);
+ kfree_skb(skb);
+ }
+ goto done;
+
+ case COMPST_EXIT:
+ if (qp->comp.timeout_retry && wqe) {
+ state = COMPST_ERROR_RETRY;
+ break;
+ }
+
+ /* re reset the timeout counter if
+ * (1) QP is type RC
+ * (2) the QP is alive
+ * (3) there is a packet sent by the requester that
+ * might be acked (we still might get spurious
+ * timeouts but try to keep them as few as possible)
+ * (4) the timeout parameter is set
+ */
+ if ((qp_type(qp) == IB_QPT_RC) &&
+ (qp->req.state == QP_STATE_READY) &&
+ (psn_compare(qp->req.psn, qp->comp.psn) > 0) &&
+ qp->qp_timeout_jiffies)
+ mod_timer(&qp->retrans_timer,
+ jiffies + qp->qp_timeout_jiffies);
+ goto exit;
+
+ case COMPST_ERROR_RETRY:
+ /* we come here if the retry timer fired and we did
+ * not receive a response packet. try to retry the send
+ * queue if that makes sense and the limits have not
+ * been exceeded. remember that some timeouts are
+ * spurious since we do not reset the timer but kick
+ * it down the road or let it expire
+ */
+
+ /* there is nothing to retry in this case */
+ if (!wqe || (wqe->state == wqe_state_posted))
+ goto exit;
+
+ if (qp->comp.retry_cnt > 0) {
+ if (qp->comp.retry_cnt != 7)
+ qp->comp.retry_cnt--;
+
+ /* no point in retrying if we have already
+ * seen the last ack that the requester could
+ * have caused
+ */
+ if (psn_compare(qp->req.psn,
+ qp->comp.psn) > 0) {
+ /* tell the requester to retry the
+ * send send queue next time around
+ */
+ qp->req.need_retry = 1;
+ rxe_run_task(&qp->req.task, 1);
+ }
+ goto exit;
+ } else {
+ wqe->status = IB_WC_RETRY_EXC_ERR;
+ state = COMPST_ERROR;
+ }
+ break;
+
+ case COMPST_RNR_RETRY:
+ if (qp->comp.rnr_retry > 0) {
+ if (qp->comp.rnr_retry != 7)
+ qp->comp.rnr_retry--;
+
+ qp->req.need_retry = 1;
+ pr_debug("set rnr nak timer\n");
+ mod_timer(&qp->rnr_nak_timer,
+ jiffies + rnrnak_jiffies(aeth_syn(pkt)
+ & ~AETH_TYPE_MASK));
+ goto exit;
+ } else {
+ wqe->status = IB_WC_RNR_RETRY_EXC_ERR;
+ state = COMPST_ERROR;
+ }
+ break;
+
+ case COMPST_ERROR:
+ do_complete(qp, wqe);
+ rxe_qp_error(qp);
+ goto exit;
+ }
+ }
+
+exit:
+ /* we come here if we are done with processing and want the task to
+ * exit from the loop calling us
+ */
+ return -EAGAIN;
+
+done:
+ /* we come here if we have processed a packet we want the task to call
+ * us again to see if there is anything else to do
+ */
+ return 0;
+}
diff --git a/drivers/infiniband/sw/rxe/rxe_cq.c b/drivers/infiniband/sw/rxe/rxe_cq.c
new file mode 100644
index 000000000000..e5e6a5e7dee9
--- /dev/null
+++ b/drivers/infiniband/sw/rxe/rxe_cq.c
@@ -0,0 +1,165 @@
+/*
+ * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
+ * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include "rxe.h"
+#include "rxe_loc.h"
+#include "rxe_queue.h"
+
+int rxe_cq_chk_attr(struct rxe_dev *rxe, struct rxe_cq *cq,
+ int cqe, int comp_vector, struct ib_udata *udata)
+{
+ int count;
+
+ if (cqe <= 0) {
+ pr_warn("cqe(%d) <= 0\n", cqe);
+ goto err1;
+ }
+
+ if (cqe > rxe->attr.max_cqe) {
+ pr_warn("cqe(%d) > max_cqe(%d)\n",
+ cqe, rxe->attr.max_cqe);
+ goto err1;
+ }
+
+ if (cq) {
+ count = queue_count(cq->queue);
+ if (cqe < count) {
+ pr_warn("cqe(%d) < current # elements in queue (%d)",
+ cqe, count);
+ goto err1;
+ }
+ }
+
+ return 0;
+
+err1:
+ return -EINVAL;
+}
+
+static void rxe_send_complete(unsigned long data)
+{
+ struct rxe_cq *cq = (struct rxe_cq *)data;
+
+ cq->ibcq.comp_handler(&cq->ibcq, cq->ibcq.cq_context);
+}
+
+int rxe_cq_from_init(struct rxe_dev *rxe, struct rxe_cq *cq, int cqe,
+ int comp_vector, struct ib_ucontext *context,
+ struct ib_udata *udata)
+{
+ int err;
+
+ cq->queue = rxe_queue_init(rxe, &cqe,
+ sizeof(struct rxe_cqe));
+ if (!cq->queue) {
+ pr_warn("unable to create cq\n");
+ return -ENOMEM;
+ }
+
+ err = do_mmap_info(rxe, udata, false, context, cq->queue->buf,
+ cq->queue->buf_size, &cq->queue->ip);
+ if (err) {
+ kvfree(cq->queue->buf);
+ kfree(cq->queue);
+ return err;
+ }
+
+ if (udata)
+ cq->is_user = 1;
+
+ tasklet_init(&cq->comp_task, rxe_send_complete, (unsigned long)cq);
+
+ spin_lock_init(&cq->cq_lock);
+ cq->ibcq.cqe = cqe;
+ return 0;
+}
+
+int rxe_cq_resize_queue(struct rxe_cq *cq, int cqe, struct ib_udata *udata)
+{
+ int err;
+
+ err = rxe_queue_resize(cq->queue, (unsigned int *)&cqe,
+ sizeof(struct rxe_cqe),
+ cq->queue->ip ? cq->queue->ip->context : NULL,
+ udata, NULL, &cq->cq_lock);
+ if (!err)
+ cq->ibcq.cqe = cqe;
+
+ return err;
+}
+
+int rxe_cq_post(struct rxe_cq *cq, struct rxe_cqe *cqe, int solicited)
+{
+ struct ib_event ev;
+ unsigned long flags;
+
+ spin_lock_irqsave(&cq->cq_lock, flags);
+
+ if (unlikely(queue_full(cq->queue))) {
+ spin_unlock_irqrestore(&cq->cq_lock, flags);
+ if (cq->ibcq.event_handler) {
+ ev.device = cq->ibcq.device;
+ ev.element.cq = &cq->ibcq;
+ ev.event = IB_EVENT_CQ_ERR;
+ cq->ibcq.event_handler(&ev, cq->ibcq.cq_context);
+ }
+
+ return -EBUSY;
+ }
+
+ memcpy(producer_addr(cq->queue), cqe, sizeof(*cqe));
+
+ /* make sure all changes to the CQ are written before we update the
+ * producer pointer
+ */
+ smp_wmb();
+
+ advance_producer(cq->queue);
+ spin_unlock_irqrestore(&cq->cq_lock, flags);
+
+ if ((cq->notify == IB_CQ_NEXT_COMP) ||
+ (cq->notify == IB_CQ_SOLICITED && solicited)) {
+ cq->notify = 0;
+ tasklet_schedule(&cq->comp_task);
+ }
+
+ return 0;
+}
+
+void rxe_cq_cleanup(void *arg)
+{
+ struct rxe_cq *cq = arg;
+
+ if (cq->queue)
+ rxe_queue_cleanup(cq->queue);
+}
diff --git a/drivers/infiniband/sw/rxe/rxe_dma.c b/drivers/infiniband/sw/rxe/rxe_dma.c
new file mode 100644
index 000000000000..7634c1a81b2b
--- /dev/null
+++ b/drivers/infiniband/sw/rxe/rxe_dma.c
@@ -0,0 +1,166 @@
+/*
+ * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
+ * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include "rxe.h"
+#include "rxe_loc.h"
+
+#define DMA_BAD_ADDER ((u64)0)
+
+static int rxe_mapping_error(struct ib_device *dev, u64 dma_addr)
+{
+ return dma_addr == DMA_BAD_ADDER;
+}
+
+static u64 rxe_dma_map_single(struct ib_device *dev,
+ void *cpu_addr, size_t size,
+ enum dma_data_direction direction)
+{
+ WARN_ON(!valid_dma_direction(direction));
+ return (uintptr_t)cpu_addr;
+}
+
+static void rxe_dma_unmap_single(struct ib_device *dev,
+ u64 addr, size_t size,
+ enum dma_data_direction direction)
+{
+ WARN_ON(!valid_dma_direction(direction));
+}
+
+static u64 rxe_dma_map_page(struct ib_device *dev,
+ struct page *page,
+ unsigned long offset,
+ size_t size, enum dma_data_direction direction)
+{
+ u64 addr;
+
+ WARN_ON(!valid_dma_direction(direction));
+
+ if (offset + size > PAGE_SIZE) {
+ addr = DMA_BAD_ADDER;
+ goto done;
+ }
+
+ addr = (uintptr_t)page_address(page);
+ if (addr)
+ addr += offset;
+
+done:
+ return addr;
+}
+
+static void rxe_dma_unmap_page(struct ib_device *dev,
+ u64 addr, size_t size,
+ enum dma_data_direction direction)
+{
+ WARN_ON(!valid_dma_direction(direction));
+}
+
+static int rxe_map_sg(struct ib_device *dev, struct scatterlist *sgl,
+ int nents, enum dma_data_direction direction)
+{
+ struct scatterlist *sg;
+ u64 addr;
+ int i;
+ int ret = nents;
+
+ WARN_ON(!valid_dma_direction(direction));
+
+ for_each_sg(sgl, sg, nents, i) {
+ addr = (uintptr_t)page_address(sg_page(sg));
+ if (!addr) {
+ ret = 0;
+ break;
+ }
+ sg->dma_address = addr + sg->offset;
+#ifdef CONFIG_NEED_SG_DMA_LENGTH
+ sg->dma_length = sg->length;
+#endif
+ }
+
+ return ret;
+}
+
+static void rxe_unmap_sg(struct ib_device *dev,
+ struct scatterlist *sg, int nents,
+ enum dma_data_direction direction)
+{
+ WARN_ON(!valid_dma_direction(direction));
+}
+
+static void rxe_sync_single_for_cpu(struct ib_device *dev,
+ u64 addr,
+ size_t size, enum dma_data_direction dir)
+{
+}
+
+static void rxe_sync_single_for_device(struct ib_device *dev,
+ u64 addr,
+ size_t size, enum dma_data_direction dir)
+{
+}
+
+static void *rxe_dma_alloc_coherent(struct ib_device *dev, size_t size,
+ u64 *dma_handle, gfp_t flag)
+{
+ struct page *p;
+ void *addr = NULL;
+
+ p = alloc_pages(flag, get_order(size));
+ if (p)
+ addr = page_address(p);
+
+ if (dma_handle)
+ *dma_handle = (uintptr_t)addr;
+
+ return addr;
+}
+
+static void rxe_dma_free_coherent(struct ib_device *dev, size_t size,
+ void *cpu_addr, u64 dma_handle)
+{
+ free_pages((unsigned long)cpu_addr, get_order(size));
+}
+
+struct ib_dma_mapping_ops rxe_dma_mapping_ops = {
+ .mapping_error = rxe_mapping_error,
+ .map_single = rxe_dma_map_single,
+ .unmap_single = rxe_dma_unmap_single,
+ .map_page = rxe_dma_map_page,
+ .unmap_page = rxe_dma_unmap_page,
+ .map_sg = rxe_map_sg,
+ .unmap_sg = rxe_unmap_sg,
+ .sync_single_for_cpu = rxe_sync_single_for_cpu,
+ .sync_single_for_device = rxe_sync_single_for_device,
+ .alloc_coherent = rxe_dma_alloc_coherent,
+ .free_coherent = rxe_dma_free_coherent
+};
diff --git a/drivers/infiniband/sw/rxe/rxe_hdr.h b/drivers/infiniband/sw/rxe/rxe_hdr.h
new file mode 100644
index 000000000000..d57b5e956ceb
--- /dev/null
+++ b/drivers/infiniband/sw/rxe/rxe_hdr.h
@@ -0,0 +1,952 @@
+/*
+ * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
+ * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef RXE_HDR_H
+#define RXE_HDR_H
+
+/* extracted information about a packet carried in an sk_buff struct fits in
+ * the skbuff cb array. Must be at most 48 bytes. stored in control block of
+ * sk_buff for received packets.
+ */
+struct rxe_pkt_info {
+ struct rxe_dev *rxe; /* device that owns packet */
+ struct rxe_qp *qp; /* qp that owns packet */
+ struct rxe_send_wqe *wqe; /* send wqe */
+ u8 *hdr; /* points to bth */
+ u32 mask; /* useful info about pkt */
+ u32 psn; /* bth psn of packet */
+ u16 pkey_index; /* partition of pkt */
+ u16 paylen; /* length of bth - icrc */
+ u8 port_num; /* port pkt received on */
+ u8 opcode; /* bth opcode of packet */
+ u8 offset; /* bth offset from pkt->hdr */
+};
+
+/* Macros should be used only for received skb */
+#define SKB_TO_PKT(skb) ((struct rxe_pkt_info *)(skb)->cb)
+#define PKT_TO_SKB(pkt) container_of((void *)(pkt), struct sk_buff, cb)
+
+/*
+ * IBA header types and methods
+ *
+ * Some of these are for reference and completeness only since
+ * rxe does not currently support RD transport
+ * most of this could be moved into IB core. ib_pack.h has
+ * part of this but is incomplete
+ *
+ * Header specific routines to insert/extract values to/from headers
+ * the routines that are named __hhh_(set_)fff() take a pointer to a
+ * hhh header and get(set) the fff field. The routines named
+ * hhh_(set_)fff take a packet info struct and find the
+ * header and field based on the opcode in the packet.
+ * Conversion to/from network byte order from cpu order is also done.
+ */
+
+#define RXE_ICRC_SIZE (4)
+#define RXE_MAX_HDR_LENGTH (80)
+
+/******************************************************************************
+ * Base Transport Header
+ ******************************************************************************/
+struct rxe_bth {
+ u8 opcode;
+ u8 flags;
+ __be16 pkey;
+ __be32 qpn;
+ __be32 apsn;
+};
+
+#define BTH_TVER (0)
+#define BTH_DEF_PKEY (0xffff)
+
+#define BTH_SE_MASK (0x80)
+#define BTH_MIG_MASK (0x40)
+#define BTH_PAD_MASK (0x30)
+#define BTH_TVER_MASK (0x0f)
+#define BTH_FECN_MASK (0x80000000)
+#define BTH_BECN_MASK (0x40000000)
+#define BTH_RESV6A_MASK (0x3f000000)
+#define BTH_QPN_MASK (0x00ffffff)
+#define BTH_ACK_MASK (0x80000000)
+#define BTH_RESV7_MASK (0x7f000000)
+#define BTH_PSN_MASK (0x00ffffff)
+
+static inline u8 __bth_opcode(void *arg)
+{
+ struct rxe_bth *bth = arg;
+
+ return bth->opcode;
+}
+
+static inline void __bth_set_opcode(void *arg, u8 opcode)
+{
+ struct rxe_bth *bth = arg;
+
+ bth->opcode = opcode;
+}
+
+static inline u8 __bth_se(void *arg)
+{
+ struct rxe_bth *bth = arg;
+
+ return 0 != (BTH_SE_MASK & bth->flags);
+}
+
+static inline void __bth_set_se(void *arg, int se)
+{
+ struct rxe_bth *bth = arg;
+
+ if (se)
+ bth->flags |= BTH_SE_MASK;
+ else
+ bth->flags &= ~BTH_SE_MASK;
+}
+
+static inline u8 __bth_mig(void *arg)
+{
+ struct rxe_bth *bth = arg;
+
+ return 0 != (BTH_MIG_MASK & bth->flags);
+}
+
+static inline void __bth_set_mig(void *arg, u8 mig)
+{
+ struct rxe_bth *bth = arg;
+
+ if (mig)
+ bth->flags |= BTH_MIG_MASK;
+ else
+ bth->flags &= ~BTH_MIG_MASK;
+}
+
+static inline u8 __bth_pad(void *arg)
+{
+ struct rxe_bth *bth = arg;
+
+ return (BTH_PAD_MASK & bth->flags) >> 4;
+}
+
+static inline void __bth_set_pad(void *arg, u8 pad)
+{
+ struct rxe_bth *bth = arg;
+
+ bth->flags = (BTH_PAD_MASK & (pad << 4)) |
+ (~BTH_PAD_MASK & bth->flags);
+}
+
+static inline u8 __bth_tver(void *arg)
+{
+ struct rxe_bth *bth = arg;
+
+ return BTH_TVER_MASK & bth->flags;
+}
+
+static inline void __bth_set_tver(void *arg, u8 tver)
+{
+ struct rxe_bth *bth = arg;
+
+ bth->flags = (BTH_TVER_MASK & tver) |
+ (~BTH_TVER_MASK & bth->flags);
+}
+
+static inline u16 __bth_pkey(void *arg)
+{
+ struct rxe_bth *bth = arg;
+
+ return be16_to_cpu(bth->pkey);
+}
+
+static inline void __bth_set_pkey(void *arg, u16 pkey)
+{
+ struct rxe_bth *bth = arg;
+
+ bth->pkey = cpu_to_be16(pkey);
+}
+
+static inline u32 __bth_qpn(void *arg)
+{
+ struct rxe_bth *bth = arg;
+
+ return BTH_QPN_MASK & be32_to_cpu(bth->qpn);
+}
+
+static inline void __bth_set_qpn(void *arg, u32 qpn)
+{
+ struct rxe_bth *bth = arg;
+ u32 resvqpn = be32_to_cpu(bth->qpn);
+
+ bth->qpn = cpu_to_be32((BTH_QPN_MASK & qpn) |
+ (~BTH_QPN_MASK & resvqpn));
+}
+
+static inline int __bth_fecn(void *arg)
+{
+ struct rxe_bth *bth = arg;
+
+ return 0 != (cpu_to_be32(BTH_FECN_MASK) & bth->qpn);
+}
+
+static inline void __bth_set_fecn(void *arg, int fecn)
+{
+ struct rxe_bth *bth = arg;
+
+ if (fecn)
+ bth->qpn |= cpu_to_be32(BTH_FECN_MASK);
+ else
+ bth->qpn &= ~cpu_to_be32(BTH_FECN_MASK);
+}
+
+static inline int __bth_becn(void *arg)
+{
+ struct rxe_bth *bth = arg;
+
+ return 0 != (cpu_to_be32(BTH_BECN_MASK) & bth->qpn);
+}
+
+static inline void __bth_set_becn(void *arg, int becn)
+{
+ struct rxe_bth *bth = arg;
+
+ if (becn)
+ bth->qpn |= cpu_to_be32(BTH_BECN_MASK);
+ else
+ bth->qpn &= ~cpu_to_be32(BTH_BECN_MASK);
+}
+
+static inline u8 __bth_resv6a(void *arg)
+{
+ struct rxe_bth *bth = arg;
+
+ return (BTH_RESV6A_MASK & be32_to_cpu(bth->qpn)) >> 24;
+}
+
+static inline void __bth_set_resv6a(void *arg)
+{
+ struct rxe_bth *bth = arg;
+
+ bth->qpn = cpu_to_be32(~BTH_RESV6A_MASK);
+}
+
+static inline int __bth_ack(void *arg)
+{
+ struct rxe_bth *bth = arg;
+
+ return 0 != (cpu_to_be32(BTH_ACK_MASK) & bth->apsn);
+}
+
+static inline void __bth_set_ack(void *arg, int ack)
+{
+ struct rxe_bth *bth = arg;
+
+ if (ack)
+ bth->apsn |= cpu_to_be32(BTH_ACK_MASK);
+ else
+ bth->apsn &= ~cpu_to_be32(BTH_ACK_MASK);
+}
+
+static inline void __bth_set_resv7(void *arg)
+{
+ struct rxe_bth *bth = arg;
+
+ bth->apsn &= ~cpu_to_be32(BTH_RESV7_MASK);
+}
+
+static inline u32 __bth_psn(void *arg)
+{
+ struct rxe_bth *bth = arg;
+
+ return BTH_PSN_MASK & be32_to_cpu(bth->apsn);
+}
+
+static inline void __bth_set_psn(void *arg, u32 psn)
+{
+ struct rxe_bth *bth = arg;
+ u32 apsn = be32_to_cpu(bth->apsn);
+
+ bth->apsn = cpu_to_be32((BTH_PSN_MASK & psn) |
+ (~BTH_PSN_MASK & apsn));
+}
+
+static inline u8 bth_opcode(struct rxe_pkt_info *pkt)
+{
+ return __bth_opcode(pkt->hdr + pkt->offset);
+}
+
+static inline void bth_set_opcode(struct rxe_pkt_info *pkt, u8 opcode)
+{
+ __bth_set_opcode(pkt->hdr + pkt->offset, opcode);
+}
+
+static inline u8 bth_se(struct rxe_pkt_info *pkt)
+{
+ return __bth_se(pkt->hdr + pkt->offset);
+}
+
+static inline void bth_set_se(struct rxe_pkt_info *pkt, int se)
+{
+ __bth_set_se(pkt->hdr + pkt->offset, se);
+}
+
+static inline u8 bth_mig(struct rxe_pkt_info *pkt)
+{
+ return __bth_mig(pkt->hdr + pkt->offset);
+}
+
+static inline void bth_set_mig(struct rxe_pkt_info *pkt, u8 mig)
+{
+ __bth_set_mig(pkt->hdr + pkt->offset, mig);
+}
+
+static inline u8 bth_pad(struct rxe_pkt_info *pkt)
+{
+ return __bth_pad(pkt->hdr + pkt->offset);
+}
+
+static inline void bth_set_pad(struct rxe_pkt_info *pkt, u8 pad)
+{
+ __bth_set_pad(pkt->hdr + pkt->offset, pad);
+}
+
+static inline u8 bth_tver(struct rxe_pkt_info *pkt)
+{
+ return __bth_tver(pkt->hdr + pkt->offset);
+}
+
+static inline void bth_set_tver(struct rxe_pkt_info *pkt, u8 tver)
+{
+ __bth_set_tver(pkt->hdr + pkt->offset, tver);
+}
+
+static inline u16 bth_pkey(struct rxe_pkt_info *pkt)
+{
+ return __bth_pkey(pkt->hdr + pkt->offset);
+}
+
+static inline void bth_set_pkey(struct rxe_pkt_info *pkt, u16 pkey)
+{
+ __bth_set_pkey(pkt->hdr + pkt->offset, pkey);
+}
+
+static inline u32 bth_qpn(struct rxe_pkt_info *pkt)
+{
+ return __bth_qpn(pkt->hdr + pkt->offset);
+}
+
+static inline void bth_set_qpn(struct rxe_pkt_info *pkt, u32 qpn)
+{
+ __bth_set_qpn(pkt->hdr + pkt->offset, qpn);
+}
+
+static inline int bth_fecn(struct rxe_pkt_info *pkt)
+{
+ return __bth_fecn(pkt->hdr + pkt->offset);
+}
+
+static inline void bth_set_fecn(struct rxe_pkt_info *pkt, int fecn)
+{
+ __bth_set_fecn(pkt->hdr + pkt->offset, fecn);
+}
+
+static inline int bth_becn(struct rxe_pkt_info *pkt)
+{
+ return __bth_becn(pkt->hdr + pkt->offset);
+}
+
+static inline void bth_set_becn(struct rxe_pkt_info *pkt, int becn)
+{
+ __bth_set_becn(pkt->hdr + pkt->offset, becn);
+}
+
+static inline u8 bth_resv6a(struct rxe_pkt_info *pkt)
+{
+ return __bth_resv6a(pkt->hdr + pkt->offset);
+}
+
+static inline void bth_set_resv6a(struct rxe_pkt_info *pkt)
+{
+ __bth_set_resv6a(pkt->hdr + pkt->offset);
+}
+
+static inline int bth_ack(struct rxe_pkt_info *pkt)
+{
+ return __bth_ack(pkt->hdr + pkt->offset);
+}
+
+static inline void bth_set_ack(struct rxe_pkt_info *pkt, int ack)
+{
+ __bth_set_ack(pkt->hdr + pkt->offset, ack);
+}
+
+static inline void bth_set_resv7(struct rxe_pkt_info *pkt)
+{
+ __bth_set_resv7(pkt->hdr + pkt->offset);
+}
+
+static inline u32 bth_psn(struct rxe_pkt_info *pkt)
+{
+ return __bth_psn(pkt->hdr + pkt->offset);
+}
+
+static inline void bth_set_psn(struct rxe_pkt_info *pkt, u32 psn)
+{
+ __bth_set_psn(pkt->hdr + pkt->offset, psn);
+}
+
+static inline void bth_init(struct rxe_pkt_info *pkt, u8 opcode, int se,
+ int mig, int pad, u16 pkey, u32 qpn, int ack_req,
+ u32 psn)
+{
+ struct rxe_bth *bth = (struct rxe_bth *)(pkt->hdr + pkt->offset);
+
+ bth->opcode = opcode;
+ bth->flags = (pad << 4) & BTH_PAD_MASK;
+ if (se)
+ bth->flags |= BTH_SE_MASK;
+ if (mig)
+ bth->flags |= BTH_MIG_MASK;
+ bth->pkey = cpu_to_be16(pkey);
+ bth->qpn = cpu_to_be32(qpn & BTH_QPN_MASK);
+ psn &= BTH_PSN_MASK;
+ if (ack_req)
+ psn |= BTH_ACK_MASK;
+ bth->apsn = cpu_to_be32(psn);
+}
+
+/******************************************************************************
+ * Reliable Datagram Extended Transport Header
+ ******************************************************************************/
+struct rxe_rdeth {
+ __be32 een;
+};
+
+#define RDETH_EEN_MASK (0x00ffffff)
+
+static inline u8 __rdeth_een(void *arg)
+{
+ struct rxe_rdeth *rdeth = arg;
+
+ return RDETH_EEN_MASK & be32_to_cpu(rdeth->een);
+}
+
+static inline void __rdeth_set_een(void *arg, u32 een)
+{
+ struct rxe_rdeth *rdeth = arg;
+
+ rdeth->een = cpu_to_be32(RDETH_EEN_MASK & een);
+}
+
+static inline u8 rdeth_een(struct rxe_pkt_info *pkt)
+{
+ return __rdeth_een(pkt->hdr + pkt->offset
+ + rxe_opcode[pkt->opcode].offset[RXE_RDETH]);
+}
+
+static inline void rdeth_set_een(struct rxe_pkt_info *pkt, u32 een)
+{
+ __rdeth_set_een(pkt->hdr + pkt->offset
+ + rxe_opcode[pkt->opcode].offset[RXE_RDETH], een);
+}
+
+/******************************************************************************
+ * Datagram Extended Transport Header
+ ******************************************************************************/
+struct rxe_deth {
+ __be32 qkey;
+ __be32 sqp;
+};
+
+#define GSI_QKEY (0x80010000)
+#define DETH_SQP_MASK (0x00ffffff)
+
+static inline u32 __deth_qkey(void *arg)
+{
+ struct rxe_deth *deth = arg;
+
+ return be32_to_cpu(deth->qkey);
+}
+
+static inline void __deth_set_qkey(void *arg, u32 qkey)
+{
+ struct rxe_deth *deth = arg;
+
+ deth->qkey = cpu_to_be32(qkey);
+}
+
+static inline u32 __deth_sqp(void *arg)
+{
+ struct rxe_deth *deth = arg;
+
+ return DETH_SQP_MASK & be32_to_cpu(deth->sqp);
+}
+
+static inline void __deth_set_sqp(void *arg, u32 sqp)
+{
+ struct rxe_deth *deth = arg;
+
+ deth->sqp = cpu_to_be32(DETH_SQP_MASK & sqp);
+}
+
+static inline u32 deth_qkey(struct rxe_pkt_info *pkt)
+{
+ return __deth_qkey(pkt->hdr + pkt->offset
+ + rxe_opcode[pkt->opcode].offset[RXE_DETH]);
+}
+
+static inline void deth_set_qkey(struct rxe_pkt_info *pkt, u32 qkey)
+{
+ __deth_set_qkey(pkt->hdr + pkt->offset
+ + rxe_opcode[pkt->opcode].offset[RXE_DETH], qkey);
+}
+
+static inline u32 deth_sqp(struct rxe_pkt_info *pkt)
+{
+ return __deth_sqp(pkt->hdr + pkt->offset
+ + rxe_opcode[pkt->opcode].offset[RXE_DETH]);
+}
+
+static inline void deth_set_sqp(struct rxe_pkt_info *pkt, u32 sqp)
+{
+ __deth_set_sqp(pkt->hdr + pkt->offset
+ + rxe_opcode[pkt->opcode].offset[RXE_DETH], sqp);
+}
+
+/******************************************************************************
+ * RDMA Extended Transport Header
+ ******************************************************************************/
+struct rxe_reth {
+ __be64 va;
+ __be32 rkey;
+ __be32 len;
+};
+
+static inline u64 __reth_va(void *arg)
+{
+ struct rxe_reth *reth = arg;
+
+ return be64_to_cpu(reth->va);
+}
+
+static inline void __reth_set_va(void *arg, u64 va)
+{
+ struct rxe_reth *reth = arg;
+
+ reth->va = cpu_to_be64(va);
+}
+
+static inline u32 __reth_rkey(void *arg)
+{
+ struct rxe_reth *reth = arg;
+
+ return be32_to_cpu(reth->rkey);
+}
+
+static inline void __reth_set_rkey(void *arg, u32 rkey)
+{
+ struct rxe_reth *reth = arg;
+
+ reth->rkey = cpu_to_be32(rkey);
+}
+
+static inline u32 __reth_len(void *arg)
+{
+ struct rxe_reth *reth = arg;
+
+ return be32_to_cpu(reth->len);
+}
+
+static inline void __reth_set_len(void *arg, u32 len)
+{
+ struct rxe_reth *reth = arg;
+
+ reth->len = cpu_to_be32(len);
+}
+
+static inline u64 reth_va(struct rxe_pkt_info *pkt)
+{
+ return __reth_va(pkt->hdr + pkt->offset
+ + rxe_opcode[pkt->opcode].offset[RXE_RETH]);
+}
+
+static inline void reth_set_va(struct rxe_pkt_info *pkt, u64 va)
+{
+ __reth_set_va(pkt->hdr + pkt->offset
+ + rxe_opcode[pkt->opcode].offset[RXE_RETH], va);
+}
+
+static inline u32 reth_rkey(struct rxe_pkt_info *pkt)
+{
+ return __reth_rkey(pkt->hdr + pkt->offset
+ + rxe_opcode[pkt->opcode].offset[RXE_RETH]);
+}
+
+static inline void reth_set_rkey(struct rxe_pkt_info *pkt, u32 rkey)
+{
+ __reth_set_rkey(pkt->hdr + pkt->offset
+ + rxe_opcode[pkt->opcode].offset[RXE_RETH], rkey);
+}
+
+static inline u32 reth_len(struct rxe_pkt_info *pkt)
+{
+ return __reth_len(pkt->hdr + pkt->offset
+ + rxe_opcode[pkt->opcode].offset[RXE_RETH]);
+}
+
+static inline void reth_set_len(struct rxe_pkt_info *pkt, u32 len)
+{
+ __reth_set_len(pkt->hdr + pkt->offset
+ + rxe_opcode[pkt->opcode].offset[RXE_RETH], len);
+}
+
+/******************************************************************************
+ * Atomic Extended Transport Header
+ ******************************************************************************/
+struct rxe_atmeth {
+ __be64 va;
+ __be32 rkey;
+ __be64 swap_add;
+ __be64 comp;
+} __attribute__((__packed__));
+
+static inline u64 __atmeth_va(void *arg)
+{
+ struct rxe_atmeth *atmeth = arg;
+
+ return be64_to_cpu(atmeth->va);
+}
+
+static inline void __atmeth_set_va(void *arg, u64 va)
+{
+ struct rxe_atmeth *atmeth = arg;
+
+ atmeth->va = cpu_to_be64(va);
+}
+
+static inline u32 __atmeth_rkey(void *arg)
+{
+ struct rxe_atmeth *atmeth = arg;
+
+ return be32_to_cpu(atmeth->rkey);
+}
+
+static inline void __atmeth_set_rkey(void *arg, u32 rkey)
+{
+ struct rxe_atmeth *atmeth = arg;
+
+ atmeth->rkey = cpu_to_be32(rkey);
+}
+
+static inline u64 __atmeth_swap_add(void *arg)
+{
+ struct rxe_atmeth *atmeth = arg;
+
+ return be64_to_cpu(atmeth->swap_add);
+}
+
+static inline void __atmeth_set_swap_add(void *arg, u64 swap_add)
+{
+ struct rxe_atmeth *atmeth = arg;
+
+ atmeth->swap_add = cpu_to_be64(swap_add);
+}
+
+static inline u64 __atmeth_comp(void *arg)
+{
+ struct rxe_atmeth *atmeth = arg;
+
+ return be64_to_cpu(atmeth->comp);
+}
+
+static inline void __atmeth_set_comp(void *arg, u64 comp)
+{
+ struct rxe_atmeth *atmeth = arg;
+
+ atmeth->comp = cpu_to_be64(comp);
+}
+
+static inline u64 atmeth_va(struct rxe_pkt_info *pkt)
+{
+ return __atmeth_va(pkt->hdr + pkt->offset
+ + rxe_opcode[pkt->opcode].offset[RXE_ATMETH]);
+}
+
+static inline void atmeth_set_va(struct rxe_pkt_info *pkt, u64 va)
+{
+ __atmeth_set_va(pkt->hdr + pkt->offset
+ + rxe_opcode[pkt->opcode].offset[RXE_ATMETH], va);
+}
+
+static inline u32 atmeth_rkey(struct rxe_pkt_info *pkt)
+{
+ return __atmeth_rkey(pkt->hdr + pkt->offset
+ + rxe_opcode[pkt->opcode].offset[RXE_ATMETH]);
+}
+
+static inline void atmeth_set_rkey(struct rxe_pkt_info *pkt, u32 rkey)
+{
+ __atmeth_set_rkey(pkt->hdr + pkt->offset
+ + rxe_opcode[pkt->opcode].offset[RXE_ATMETH], rkey);
+}
+
+static inline u64 atmeth_swap_add(struct rxe_pkt_info *pkt)
+{
+ return __atmeth_swap_add(pkt->hdr + pkt->offset
+ + rxe_opcode[pkt->opcode].offset[RXE_ATMETH]);
+}
+
+static inline void atmeth_set_swap_add(struct rxe_pkt_info *pkt, u64 swap_add)
+{
+ __atmeth_set_swap_add(pkt->hdr + pkt->offset
+ + rxe_opcode[pkt->opcode].offset[RXE_ATMETH], swap_add);
+}
+
+static inline u64 atmeth_comp(struct rxe_pkt_info *pkt)
+{
+ return __atmeth_comp(pkt->hdr + pkt->offset
+ + rxe_opcode[pkt->opcode].offset[RXE_ATMETH]);
+}
+
+static inline void atmeth_set_comp(struct rxe_pkt_info *pkt, u64 comp)
+{
+ __atmeth_set_comp(pkt->hdr + pkt->offset
+ + rxe_opcode[pkt->opcode].offset[RXE_ATMETH], comp);
+}
+
+/******************************************************************************
+ * Ack Extended Transport Header
+ ******************************************************************************/
+struct rxe_aeth {
+ __be32 smsn;
+};
+
+#define AETH_SYN_MASK (0xff000000)
+#define AETH_MSN_MASK (0x00ffffff)
+
+enum aeth_syndrome {
+ AETH_TYPE_MASK = 0xe0,
+ AETH_ACK = 0x00,
+ AETH_RNR_NAK = 0x20,
+ AETH_RSVD = 0x40,
+ AETH_NAK = 0x60,
+ AETH_ACK_UNLIMITED = 0x1f,
+ AETH_NAK_PSN_SEQ_ERROR = 0x60,
+ AETH_NAK_INVALID_REQ = 0x61,
+ AETH_NAK_REM_ACC_ERR = 0x62,
+ AETH_NAK_REM_OP_ERR = 0x63,
+ AETH_NAK_INV_RD_REQ = 0x64,
+};
+
+static inline u8 __aeth_syn(void *arg)
+{
+ struct rxe_aeth *aeth = arg;
+
+ return (AETH_SYN_MASK & be32_to_cpu(aeth->smsn)) >> 24;
+}
+
+static inline void __aeth_set_syn(void *arg, u8 syn)
+{
+ struct rxe_aeth *aeth = arg;
+ u32 smsn = be32_to_cpu(aeth->smsn);
+
+ aeth->smsn = cpu_to_be32((AETH_SYN_MASK & (syn << 24)) |
+ (~AETH_SYN_MASK & smsn));
+}
+
+static inline u32 __aeth_msn(void *arg)
+{
+ struct rxe_aeth *aeth = arg;
+
+ return AETH_MSN_MASK & be32_to_cpu(aeth->smsn);
+}
+
+static inline void __aeth_set_msn(void *arg, u32 msn)
+{
+ struct rxe_aeth *aeth = arg;
+ u32 smsn = be32_to_cpu(aeth->smsn);
+
+ aeth->smsn = cpu_to_be32((AETH_MSN_MASK & msn) |
+ (~AETH_MSN_MASK & smsn));
+}
+
+static inline u8 aeth_syn(struct rxe_pkt_info *pkt)
+{
+ return __aeth_syn(pkt->hdr + pkt->offset
+ + rxe_opcode[pkt->opcode].offset[RXE_AETH]);
+}
+
+static inline void aeth_set_syn(struct rxe_pkt_info *pkt, u8 syn)
+{
+ __aeth_set_syn(pkt->hdr + pkt->offset
+ + rxe_opcode[pkt->opcode].offset[RXE_AETH], syn);
+}
+
+static inline u32 aeth_msn(struct rxe_pkt_info *pkt)
+{
+ return __aeth_msn(pkt->hdr + pkt->offset
+ + rxe_opcode[pkt->opcode].offset[RXE_AETH]);
+}
+
+static inline void aeth_set_msn(struct rxe_pkt_info *pkt, u32 msn)
+{
+ __aeth_set_msn(pkt->hdr + pkt->offset
+ + rxe_opcode[pkt->opcode].offset[RXE_AETH], msn);
+}
+
+/******************************************************************************
+ * Atomic Ack Extended Transport Header
+ ******************************************************************************/
+struct rxe_atmack {
+ __be64 orig;
+};
+
+static inline u64 __atmack_orig(void *arg)
+{
+ struct rxe_atmack *atmack = arg;
+
+ return be64_to_cpu(atmack->orig);
+}
+
+static inline void __atmack_set_orig(void *arg, u64 orig)
+{
+ struct rxe_atmack *atmack = arg;
+
+ atmack->orig = cpu_to_be64(orig);
+}
+
+static inline u64 atmack_orig(struct rxe_pkt_info *pkt)
+{
+ return __atmack_orig(pkt->hdr + pkt->offset
+ + rxe_opcode[pkt->opcode].offset[RXE_ATMACK]);
+}
+
+static inline void atmack_set_orig(struct rxe_pkt_info *pkt, u64 orig)
+{
+ __atmack_set_orig(pkt->hdr + pkt->offset
+ + rxe_opcode[pkt->opcode].offset[RXE_ATMACK], orig);
+}
+
+/******************************************************************************
+ * Immediate Extended Transport Header
+ ******************************************************************************/
+struct rxe_immdt {
+ __be32 imm;
+};
+
+static inline __be32 __immdt_imm(void *arg)
+{
+ struct rxe_immdt *immdt = arg;
+
+ return immdt->imm;
+}
+
+static inline void __immdt_set_imm(void *arg, __be32 imm)
+{
+ struct rxe_immdt *immdt = arg;
+
+ immdt->imm = imm;
+}
+
+static inline __be32 immdt_imm(struct rxe_pkt_info *pkt)
+{
+ return __immdt_imm(pkt->hdr + pkt->offset
+ + rxe_opcode[pkt->opcode].offset[RXE_IMMDT]);
+}
+
+static inline void immdt_set_imm(struct rxe_pkt_info *pkt, __be32 imm)
+{
+ __immdt_set_imm(pkt->hdr + pkt->offset
+ + rxe_opcode[pkt->opcode].offset[RXE_IMMDT], imm);
+}
+
+/******************************************************************************
+ * Invalidate Extended Transport Header
+ ******************************************************************************/
+struct rxe_ieth {
+ __be32 rkey;
+};
+
+static inline u32 __ieth_rkey(void *arg)
+{
+ struct rxe_ieth *ieth = arg;
+
+ return be32_to_cpu(ieth->rkey);
+}
+
+static inline void __ieth_set_rkey(void *arg, u32 rkey)
+{
+ struct rxe_ieth *ieth = arg;
+
+ ieth->rkey = cpu_to_be32(rkey);
+}
+
+static inline u32 ieth_rkey(struct rxe_pkt_info *pkt)
+{
+ return __ieth_rkey(pkt->hdr + pkt->offset
+ + rxe_opcode[pkt->opcode].offset[RXE_IETH]);
+}
+
+static inline void ieth_set_rkey(struct rxe_pkt_info *pkt, u32 rkey)
+{
+ __ieth_set_rkey(pkt->hdr + pkt->offset
+ + rxe_opcode[pkt->opcode].offset[RXE_IETH], rkey);
+}
+
+enum rxe_hdr_length {
+ RXE_BTH_BYTES = sizeof(struct rxe_bth),
+ RXE_DETH_BYTES = sizeof(struct rxe_deth),
+ RXE_IMMDT_BYTES = sizeof(struct rxe_immdt),
+ RXE_RETH_BYTES = sizeof(struct rxe_reth),
+ RXE_AETH_BYTES = sizeof(struct rxe_aeth),
+ RXE_ATMACK_BYTES = sizeof(struct rxe_atmack),
+ RXE_ATMETH_BYTES = sizeof(struct rxe_atmeth),
+ RXE_IETH_BYTES = sizeof(struct rxe_ieth),
+ RXE_RDETH_BYTES = sizeof(struct rxe_rdeth),
+};
+
+static inline size_t header_size(struct rxe_pkt_info *pkt)
+{
+ return pkt->offset + rxe_opcode[pkt->opcode].length;
+}
+
+static inline void *payload_addr(struct rxe_pkt_info *pkt)
+{
+ return pkt->hdr + pkt->offset
+ + rxe_opcode[pkt->opcode].offset[RXE_PAYLOAD];
+}
+
+static inline size_t payload_size(struct rxe_pkt_info *pkt)
+{
+ return pkt->paylen - rxe_opcode[pkt->opcode].offset[RXE_PAYLOAD]
+ - bth_pad(pkt) - RXE_ICRC_SIZE;
+}
+
+#endif /* RXE_HDR_H */
diff --git a/drivers/infiniband/sw/rxe/rxe_icrc.c b/drivers/infiniband/sw/rxe/rxe_icrc.c
new file mode 100644
index 000000000000..413b56b23a06
--- /dev/null
+++ b/drivers/infiniband/sw/rxe/rxe_icrc.c
@@ -0,0 +1,96 @@
+/*
+ * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
+ * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include "rxe.h"
+#include "rxe_loc.h"
+
+/* Compute a partial ICRC for all the IB transport headers. */
+u32 rxe_icrc_hdr(struct rxe_pkt_info *pkt, struct sk_buff *skb)
+{
+ unsigned int bth_offset = 0;
+ struct iphdr *ip4h = NULL;
+ struct ipv6hdr *ip6h = NULL;
+ struct udphdr *udph;
+ struct rxe_bth *bth;
+ int crc;
+ int length;
+ int hdr_size = sizeof(struct udphdr) +
+ (skb->protocol == htons(ETH_P_IP) ?
+ sizeof(struct iphdr) : sizeof(struct ipv6hdr));
+ /* pseudo header buffer size is calculate using ipv6 header size since
+ * it is bigger than ipv4
+ */
+ u8 pshdr[sizeof(struct udphdr) +
+ sizeof(struct ipv6hdr) +
+ RXE_BTH_BYTES];
+
+ /* This seed is the result of computing a CRC with a seed of
+ * 0xfffffff and 8 bytes of 0xff representing a masked LRH.
+ */
+ crc = 0xdebb20e3;
+
+ if (skb->protocol == htons(ETH_P_IP)) { /* IPv4 */
+ memcpy(pshdr, ip_hdr(skb), hdr_size);
+ ip4h = (struct iphdr *)pshdr;
+ udph = (struct udphdr *)(ip4h + 1);
+
+ ip4h->ttl = 0xff;
+ ip4h->check = CSUM_MANGLED_0;
+ ip4h->tos = 0xff;
+ } else { /* IPv6 */
+ memcpy(pshdr, ipv6_hdr(skb), hdr_size);
+ ip6h = (struct ipv6hdr *)pshdr;
+ udph = (struct udphdr *)(ip6h + 1);
+
+ memset(ip6h->flow_lbl, 0xff, sizeof(ip6h->flow_lbl));
+ ip6h->priority = 0xf;
+ ip6h->hop_limit = 0xff;
+ }
+ udph->check = CSUM_MANGLED_0;
+
+ bth_offset += hdr_size;
+
+ memcpy(&pshdr[bth_offset], pkt->hdr, RXE_BTH_BYTES);
+ bth = (struct rxe_bth *)&pshdr[bth_offset];
+
+ /* exclude bth.resv8a */
+ bth->qpn |= cpu_to_be32(~BTH_QPN_MASK);
+
+ length = hdr_size + RXE_BTH_BYTES;
+ crc = crc32_le(crc, pshdr, length);
+
+ /* And finish to compute the CRC on the remainder of the headers. */
+ crc = crc32_le(crc, pkt->hdr + RXE_BTH_BYTES,
+ rxe_opcode[pkt->opcode].length - RXE_BTH_BYTES);
+ return crc;
+}
diff --git a/drivers/infiniband/sw/rxe/rxe_loc.h b/drivers/infiniband/sw/rxe/rxe_loc.h
new file mode 100644
index 000000000000..4a5484ef604f
--- /dev/null
+++ b/drivers/infiniband/sw/rxe/rxe_loc.h
@@ -0,0 +1,286 @@
+/*
+ * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
+ * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef RXE_LOC_H
+#define RXE_LOC_H
+
+/* rxe_av.c */
+
+int rxe_av_chk_attr(struct rxe_dev *rxe, struct ib_ah_attr *attr);
+
+int rxe_av_from_attr(struct rxe_dev *rxe, u8 port_num,
+ struct rxe_av *av, struct ib_ah_attr *attr);
+
+int rxe_av_to_attr(struct rxe_dev *rxe, struct rxe_av *av,
+ struct ib_ah_attr *attr);
+
+int rxe_av_fill_ip_info(struct rxe_dev *rxe,
+ struct rxe_av *av,
+ struct ib_ah_attr *attr,
+ struct ib_gid_attr *sgid_attr,
+ union ib_gid *sgid);
+
+struct rxe_av *rxe_get_av(struct rxe_pkt_info *pkt);
+
+/* rxe_cq.c */
+int rxe_cq_chk_attr(struct rxe_dev *rxe, struct rxe_cq *cq,
+ int cqe, int comp_vector, struct ib_udata *udata);
+
+int rxe_cq_from_init(struct rxe_dev *rxe, struct rxe_cq *cq, int cqe,
+ int comp_vector, struct ib_ucontext *context,
+ struct ib_udata *udata);
+
+int rxe_cq_resize_queue(struct rxe_cq *cq, int new_cqe, struct ib_udata *udata);
+
+int rxe_cq_post(struct rxe_cq *cq, struct rxe_cqe *cqe, int solicited);
+
+void rxe_cq_cleanup(void *arg);
+
+/* rxe_mcast.c */
+int rxe_mcast_get_grp(struct rxe_dev *rxe, union ib_gid *mgid,
+ struct rxe_mc_grp **grp_p);
+
+int rxe_mcast_add_grp_elem(struct rxe_dev *rxe, struct rxe_qp *qp,
+ struct rxe_mc_grp *grp);
+
+int rxe_mcast_drop_grp_elem(struct rxe_dev *rxe, struct rxe_qp *qp,
+ union ib_gid *mgid);
+
+void rxe_drop_all_mcast_groups(struct rxe_qp *qp);
+
+void rxe_mc_cleanup(void *arg);
+
+/* rxe_mmap.c */
+struct rxe_mmap_info {
+ struct list_head pending_mmaps;
+ struct ib_ucontext *context;
+ struct kref ref;
+ void *obj;
+
+ struct mminfo info;
+};
+
+void rxe_mmap_release(struct kref *ref);
+
+struct rxe_mmap_info *rxe_create_mmap_info(struct rxe_dev *dev,
+ u32 size,
+ struct ib_ucontext *context,
+ void *obj);
+
+int rxe_mmap(struct ib_ucontext *context, struct vm_area_struct *vma);
+
+/* rxe_mr.c */
+enum copy_direction {
+ to_mem_obj,
+ from_mem_obj,
+};
+
+int rxe_mem_init_dma(struct rxe_dev *rxe, struct rxe_pd *pd,
+ int access, struct rxe_mem *mem);
+
+int rxe_mem_init_user(struct rxe_dev *rxe, struct rxe_pd *pd, u64 start,
+ u64 length, u64 iova, int access, struct ib_udata *udata,
+ struct rxe_mem *mr);
+
+int rxe_mem_init_fast(struct rxe_dev *rxe, struct rxe_pd *pd,
+ int max_pages, struct rxe_mem *mem);
+
+int rxe_mem_copy(struct rxe_mem *mem, u64 iova, void *addr,
+ int length, enum copy_direction dir, u32 *crcp);
+
+int copy_data(struct rxe_dev *rxe, struct rxe_pd *pd, int access,
+ struct rxe_dma_info *dma, void *addr, int length,
+ enum copy_direction dir, u32 *crcp);
+
+void *iova_to_vaddr(struct rxe_mem *mem, u64 iova, int length);
+
+enum lookup_type {
+ lookup_local,
+ lookup_remote,
+};
+
+struct rxe_mem *lookup_mem(struct rxe_pd *pd, int access, u32 key,
+ enum lookup_type type);
+
+int mem_check_range(struct rxe_mem *mem, u64 iova, size_t length);
+
+int rxe_mem_map_pages(struct rxe_dev *rxe, struct rxe_mem *mem,
+ u64 *page, int num_pages, u64 iova);
+
+void rxe_mem_cleanup(void *arg);
+
+int advance_dma_data(struct rxe_dma_info *dma, unsigned int length);
+
+/* rxe_qp.c */
+int rxe_qp_chk_init(struct rxe_dev *rxe, struct ib_qp_init_attr *init);
+
+int rxe_qp_from_init(struct rxe_dev *rxe, struct rxe_qp *qp, struct rxe_pd *pd,
+ struct ib_qp_init_attr *init, struct ib_udata *udata,
+ struct ib_pd *ibpd);
+
+int rxe_qp_to_init(struct rxe_qp *qp, struct ib_qp_init_attr *init);
+
+int rxe_qp_chk_attr(struct rxe_dev *rxe, struct rxe_qp *qp,
+ struct ib_qp_attr *attr, int mask);
+
+int rxe_qp_from_attr(struct rxe_qp *qp, struct ib_qp_attr *attr,
+ int mask, struct ib_udata *udata);
+
+int rxe_qp_to_attr(struct rxe_qp *qp, struct ib_qp_attr *attr, int mask);
+
+void rxe_qp_error(struct rxe_qp *qp);
+
+void rxe_qp_destroy(struct rxe_qp *qp);
+
+void rxe_qp_cleanup(void *arg);
+
+static inline int qp_num(struct rxe_qp *qp)
+{
+ return qp->ibqp.qp_num;
+}
+
+static inline enum ib_qp_type qp_type(struct rxe_qp *qp)
+{
+ return qp->ibqp.qp_type;
+}
+
+static inline enum ib_qp_state qp_state(struct rxe_qp *qp)
+{
+ return qp->attr.qp_state;
+}
+
+static inline int qp_mtu(struct rxe_qp *qp)
+{
+ if (qp->ibqp.qp_type == IB_QPT_RC || qp->ibqp.qp_type == IB_QPT_UC)
+ return qp->attr.path_mtu;
+ else
+ return RXE_PORT_MAX_MTU;
+}
+
+static inline int rcv_wqe_size(int max_sge)
+{
+ return sizeof(struct rxe_recv_wqe) +
+ max_sge * sizeof(struct ib_sge);
+}
+
+void free_rd_atomic_resource(struct rxe_qp *qp, struct resp_res *res);
+
+static inline void rxe_advance_resp_resource(struct rxe_qp *qp)
+{
+ qp->resp.res_head++;
+ if (unlikely(qp->resp.res_head == qp->attr.max_rd_atomic))
+ qp->resp.res_head = 0;
+}
+
+void retransmit_timer(unsigned long data);
+void rnr_nak_timer(unsigned long data);
+
+void dump_qp(struct rxe_qp *qp);
+
+/* rxe_srq.c */
+#define IB_SRQ_INIT_MASK (~IB_SRQ_LIMIT)
+
+int rxe_srq_chk_attr(struct rxe_dev *rxe, struct rxe_srq *srq,
+ struct ib_srq_attr *attr, enum ib_srq_attr_mask mask);
+
+int rxe_srq_from_init(struct rxe_dev *rxe, struct rxe_srq *srq,
+ struct ib_srq_init_attr *init,
+ struct ib_ucontext *context, struct ib_udata *udata);
+
+int rxe_srq_from_attr(struct rxe_dev *rxe, struct rxe_srq *srq,
+ struct ib_srq_attr *attr, enum ib_srq_attr_mask mask,
+ struct ib_udata *udata);
+
+extern struct ib_dma_mapping_ops rxe_dma_mapping_ops;
+
+void rxe_release(struct kref *kref);
+
+int rxe_completer(void *arg);
+int rxe_requester(void *arg);
+int rxe_responder(void *arg);
+
+u32 rxe_icrc_hdr(struct rxe_pkt_info *pkt, struct sk_buff *skb);
+
+void rxe_resp_queue_pkt(struct rxe_dev *rxe,
+ struct rxe_qp *qp, struct sk_buff *skb);
+
+void rxe_comp_queue_pkt(struct rxe_dev *rxe,
+ struct rxe_qp *qp, struct sk_buff *skb);
+
+static inline unsigned wr_opcode_mask(int opcode, struct rxe_qp *qp)
+{
+ return rxe_wr_opcode_info[opcode].mask[qp->ibqp.qp_type];
+}
+
+static inline int rxe_xmit_packet(struct rxe_dev *rxe, struct rxe_qp *qp,
+ struct rxe_pkt_info *pkt, struct sk_buff *skb)
+{
+ int err;
+ int is_request = pkt->mask & RXE_REQ_MASK;
+
+ if ((is_request && (qp->req.state != QP_STATE_READY)) ||
+ (!is_request && (qp->resp.state != QP_STATE_READY))) {
+ pr_info("Packet dropped. QP is not in ready state\n");
+ goto drop;
+ }
+
+ if (pkt->mask & RXE_LOOPBACK_MASK) {
+ memcpy(SKB_TO_PKT(skb), pkt, sizeof(*pkt));
+ err = rxe->ifc_ops->loopback(skb);
+ } else {
+ err = rxe->ifc_ops->send(rxe, pkt, skb);
+ }
+
+ if (err) {
+ rxe->xmit_errors++;
+ return err;
+ }
+
+ atomic_inc(&qp->skb_out);
+
+ if ((qp_type(qp) != IB_QPT_RC) &&
+ (pkt->mask & RXE_END_MASK)) {
+ pkt->wqe->state = wqe_state_done;
+ rxe_run_task(&qp->comp.task, 1);
+ }
+
+ goto done;
+
+drop:
+ kfree_skb(skb);
+ err = 0;
+done:
+ return err;
+}
+
+#endif /* RXE_LOC_H */
diff --git a/drivers/infiniband/sw/rxe/rxe_mcast.c b/drivers/infiniband/sw/rxe/rxe_mcast.c
new file mode 100644
index 000000000000..fa95544ca7e0
--- /dev/null
+++ b/drivers/infiniband/sw/rxe/rxe_mcast.c
@@ -0,0 +1,190 @@
+/*
+ * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
+ * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include "rxe.h"
+#include "rxe_loc.h"
+
+int rxe_mcast_get_grp(struct rxe_dev *rxe, union ib_gid *mgid,
+ struct rxe_mc_grp **grp_p)
+{
+ int err;
+ struct rxe_mc_grp *grp;
+
+ if (rxe->attr.max_mcast_qp_attach == 0) {
+ err = -EINVAL;
+ goto err1;
+ }
+
+ grp = rxe_pool_get_key(&rxe->mc_grp_pool, mgid);
+ if (grp)
+ goto done;
+
+ grp = rxe_alloc(&rxe->mc_grp_pool);
+ if (!grp) {
+ err = -ENOMEM;
+ goto err1;
+ }
+
+ INIT_LIST_HEAD(&grp->qp_list);
+ spin_lock_init(&grp->mcg_lock);
+ grp->rxe = rxe;
+
+ rxe_add_key(grp, mgid);
+
+ err = rxe->ifc_ops->mcast_add(rxe, mgid);
+ if (err)
+ goto err2;
+
+done:
+ *grp_p = grp;
+ return 0;
+
+err2:
+ rxe_drop_ref(grp);
+err1:
+ return err;
+}
+
+int rxe_mcast_add_grp_elem(struct rxe_dev *rxe, struct rxe_qp *qp,
+ struct rxe_mc_grp *grp)
+{
+ int err;
+ struct rxe_mc_elem *elem;
+
+ /* check to see of the qp is already a member of the group */
+ spin_lock_bh(&qp->grp_lock);
+ spin_lock_bh(&grp->mcg_lock);
+ list_for_each_entry(elem, &grp->qp_list, qp_list) {
+ if (elem->qp == qp) {
+ err = 0;
+ goto out;
+ }
+ }
+
+ if (grp->num_qp >= rxe->attr.max_mcast_qp_attach) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ elem = rxe_alloc(&rxe->mc_elem_pool);
+ if (!elem) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ /* each qp holds a ref on the grp */
+ rxe_add_ref(grp);
+
+ grp->num_qp++;
+ elem->qp = qp;
+ elem->grp = grp;
+
+ list_add(&elem->qp_list, &grp->qp_list);
+ list_add(&elem->grp_list, &qp->grp_list);
+
+ err = 0;
+out:
+ spin_unlock_bh(&grp->mcg_lock);
+ spin_unlock_bh(&qp->grp_lock);
+ return err;
+}
+
+int rxe_mcast_drop_grp_elem(struct rxe_dev *rxe, struct rxe_qp *qp,
+ union ib_gid *mgid)
+{
+ struct rxe_mc_grp *grp;
+ struct rxe_mc_elem *elem, *tmp;
+
+ grp = rxe_pool_get_key(&rxe->mc_grp_pool, mgid);
+ if (!grp)
+ goto err1;
+
+ spin_lock_bh(&qp->grp_lock);
+ spin_lock_bh(&grp->mcg_lock);
+
+ list_for_each_entry_safe(elem, tmp, &grp->qp_list, qp_list) {
+ if (elem->qp == qp) {
+ list_del(&elem->qp_list);
+ list_del(&elem->grp_list);
+ grp->num_qp--;
+
+ spin_unlock_bh(&grp->mcg_lock);
+ spin_unlock_bh(&qp->grp_lock);
+ rxe_drop_ref(elem);
+ rxe_drop_ref(grp); /* ref held by QP */
+ rxe_drop_ref(grp); /* ref from get_key */
+ return 0;
+ }
+ }
+
+ spin_unlock_bh(&grp->mcg_lock);
+ spin_unlock_bh(&qp->grp_lock);
+ rxe_drop_ref(grp); /* ref from get_key */
+err1:
+ return -EINVAL;
+}
+
+void rxe_drop_all_mcast_groups(struct rxe_qp *qp)
+{
+ struct rxe_mc_grp *grp;
+ struct rxe_mc_elem *elem;
+
+ while (1) {
+ spin_lock_bh(&qp->grp_lock);
+ if (list_empty(&qp->grp_list)) {
+ spin_unlock_bh(&qp->grp_lock);
+ break;
+ }
+ elem = list_first_entry(&qp->grp_list, struct rxe_mc_elem,
+ grp_list);
+ list_del(&elem->grp_list);
+ spin_unlock_bh(&qp->grp_lock);
+
+ grp = elem->grp;
+ spin_lock_bh(&grp->mcg_lock);
+ list_del(&elem->qp_list);
+ grp->num_qp--;
+ spin_unlock_bh(&grp->mcg_lock);
+ rxe_drop_ref(grp);
+ rxe_drop_ref(elem);
+ }
+}
+
+void rxe_mc_cleanup(void *arg)
+{
+ struct rxe_mc_grp *grp = arg;
+ struct rxe_dev *rxe = grp->rxe;
+
+ rxe_drop_key(grp);
+ rxe->ifc_ops->mcast_delete(rxe, &grp->mgid);
+}
diff --git a/drivers/infiniband/sw/rxe/rxe_mmap.c b/drivers/infiniband/sw/rxe/rxe_mmap.c
new file mode 100644
index 000000000000..54b3c7c99eff
--- /dev/null
+++ b/drivers/infiniband/sw/rxe/rxe_mmap.c
@@ -0,0 +1,173 @@
+/*
+ * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
+ * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/module.h>
+#include <linux/vmalloc.h>
+#include <linux/mm.h>
+#include <linux/errno.h>
+#include <asm/pgtable.h>
+
+#include "rxe.h"
+#include "rxe_loc.h"
+#include "rxe_queue.h"
+
+void rxe_mmap_release(struct kref *ref)
+{
+ struct rxe_mmap_info *ip = container_of(ref,
+ struct rxe_mmap_info, ref);
+ struct rxe_dev *rxe = to_rdev(ip->context->device);
+
+ spin_lock_bh(&rxe->pending_lock);
+
+ if (!list_empty(&ip->pending_mmaps))
+ list_del(&ip->pending_mmaps);
+
+ spin_unlock_bh(&rxe->pending_lock);
+
+ vfree(ip->obj); /* buf */
+ kfree(ip);
+}
+
+/*
+ * open and close keep track of how many times the memory region is mapped,
+ * to avoid releasing it.
+ */
+static void rxe_vma_open(struct vm_area_struct *vma)
+{
+ struct rxe_mmap_info *ip = vma->vm_private_data;
+
+ kref_get(&ip->ref);
+}
+
+static void rxe_vma_close(struct vm_area_struct *vma)
+{
+ struct rxe_mmap_info *ip = vma->vm_private_data;
+
+ kref_put(&ip->ref, rxe_mmap_release);
+}
+
+static struct vm_operations_struct rxe_vm_ops = {
+ .open = rxe_vma_open,
+ .close = rxe_vma_close,
+};
+
+/**
+ * rxe_mmap - create a new mmap region
+ * @context: the IB user context of the process making the mmap() call
+ * @vma: the VMA to be initialized
+ * Return zero if the mmap is OK. Otherwise, return an errno.
+ */
+int rxe_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
+{
+ struct rxe_dev *rxe = to_rdev(context->device);
+ unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
+ unsigned long size = vma->vm_end - vma->vm_start;
+ struct rxe_mmap_info *ip, *pp;
+ int ret;
+
+ /*
+ * Search the device's list of objects waiting for a mmap call.
+ * Normally, this list is very short since a call to create a
+ * CQ, QP, or SRQ is soon followed by a call to mmap().
+ */
+ spin_lock_bh(&rxe->pending_lock);
+ list_for_each_entry_safe(ip, pp, &rxe->pending_mmaps, pending_mmaps) {
+ if (context != ip->context || (__u64)offset != ip->info.offset)
+ continue;
+
+ /* Don't allow a mmap larger than the object. */
+ if (size > ip->info.size) {
+ pr_err("mmap region is larger than the object!\n");
+ spin_unlock_bh(&rxe->pending_lock);
+ ret = -EINVAL;
+ goto done;
+ }
+
+ goto found_it;
+ }
+ pr_warn("unable to find pending mmap info\n");
+ spin_unlock_bh(&rxe->pending_lock);
+ ret = -EINVAL;
+ goto done;
+
+found_it:
+ list_del_init(&ip->pending_mmaps);
+ spin_unlock_bh(&rxe->pending_lock);
+
+ ret = remap_vmalloc_range(vma, ip->obj, 0);
+ if (ret) {
+ pr_err("rxe: err %d from remap_vmalloc_range\n", ret);
+ goto done;
+ }
+
+ vma->vm_ops = &rxe_vm_ops;
+ vma->vm_private_data = ip;
+ rxe_vma_open(vma);
+done:
+ return ret;
+}
+
+/*
+ * Allocate information for rxe_mmap
+ */
+struct rxe_mmap_info *rxe_create_mmap_info(struct rxe_dev *rxe,
+ u32 size,
+ struct ib_ucontext *context,
+ void *obj)
+{
+ struct rxe_mmap_info *ip;
+
+ ip = kmalloc(sizeof(*ip), GFP_KERNEL);
+ if (!ip)
+ return NULL;
+
+ size = PAGE_ALIGN(size);
+
+ spin_lock_bh(&rxe->mmap_offset_lock);
+
+ if (rxe->mmap_offset == 0)
+ rxe->mmap_offset = PAGE_SIZE;
+
+ ip->info.offset = rxe->mmap_offset;
+ rxe->mmap_offset += size;
+
+ spin_unlock_bh(&rxe->mmap_offset_lock);
+
+ INIT_LIST_HEAD(&ip->pending_mmaps);
+ ip->info.size = size;
+ ip->context = context;
+ ip->obj = obj;
+ kref_init(&ip->ref);
+
+ return ip;
+}
diff --git a/drivers/infiniband/sw/rxe/rxe_mr.c b/drivers/infiniband/sw/rxe/rxe_mr.c
new file mode 100644
index 000000000000..f3dab6574504
--- /dev/null
+++ b/drivers/infiniband/sw/rxe/rxe_mr.c
@@ -0,0 +1,643 @@
+/*
+ * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
+ * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include "rxe.h"
+#include "rxe_loc.h"
+
+/*
+ * lfsr (linear feedback shift register) with period 255
+ */
+static u8 rxe_get_key(void)
+{
+ static unsigned key = 1;
+
+ key = key << 1;
+
+ key |= (0 != (key & 0x100)) ^ (0 != (key & 0x10))
+ ^ (0 != (key & 0x80)) ^ (0 != (key & 0x40));
+
+ key &= 0xff;
+
+ return key;
+}
+
+int mem_check_range(struct rxe_mem *mem, u64 iova, size_t length)
+{
+ switch (mem->type) {
+ case RXE_MEM_TYPE_DMA:
+ return 0;
+
+ case RXE_MEM_TYPE_MR:
+ case RXE_MEM_TYPE_FMR:
+ return ((iova < mem->iova) ||
+ ((iova + length) > (mem->iova + mem->length))) ?
+ -EFAULT : 0;
+
+ default:
+ return -EFAULT;
+ }
+}
+
+#define IB_ACCESS_REMOTE (IB_ACCESS_REMOTE_READ \
+ | IB_ACCESS_REMOTE_WRITE \
+ | IB_ACCESS_REMOTE_ATOMIC)
+
+static void rxe_mem_init(int access, struct rxe_mem *mem)
+{
+ u32 lkey = mem->pelem.index << 8 | rxe_get_key();
+ u32 rkey = (access & IB_ACCESS_REMOTE) ? lkey : 0;
+
+ if (mem->pelem.pool->type == RXE_TYPE_MR) {
+ mem->ibmr.lkey = lkey;
+ mem->ibmr.rkey = rkey;
+ }
+
+ mem->lkey = lkey;
+ mem->rkey = rkey;
+ mem->state = RXE_MEM_STATE_INVALID;
+ mem->type = RXE_MEM_TYPE_NONE;
+ mem->map_shift = ilog2(RXE_BUF_PER_MAP);
+}
+
+void rxe_mem_cleanup(void *arg)
+{
+ struct rxe_mem *mem = arg;
+ int i;
+
+ if (mem->umem)
+ ib_umem_release(mem->umem);
+
+ if (mem->map) {
+ for (i = 0; i < mem->num_map; i++)
+ kfree(mem->map[i]);
+
+ kfree(mem->map);
+ }
+}
+
+static int rxe_mem_alloc(struct rxe_dev *rxe, struct rxe_mem *mem, int num_buf)
+{
+ int i;
+ int num_map;
+ struct rxe_map **map = mem->map;
+
+ num_map = (num_buf + RXE_BUF_PER_MAP - 1) / RXE_BUF_PER_MAP;
+
+ mem->map = kmalloc_array(num_map, sizeof(*map), GFP_KERNEL);
+ if (!mem->map)
+ goto err1;
+
+ for (i = 0; i < num_map; i++) {
+ mem->map[i] = kmalloc(sizeof(**map), GFP_KERNEL);
+ if (!mem->map[i])
+ goto err2;
+ }
+
+ WARN_ON(!is_power_of_2(RXE_BUF_PER_MAP));
+
+ mem->map_shift = ilog2(RXE_BUF_PER_MAP);
+ mem->map_mask = RXE_BUF_PER_MAP - 1;
+
+ mem->num_buf = num_buf;
+ mem->num_map = num_map;
+ mem->max_buf = num_map * RXE_BUF_PER_MAP;
+
+ return 0;
+
+err2:
+ for (i--; i >= 0; i--)
+ kfree(mem->map[i]);
+
+ kfree(mem->map);
+err1:
+ return -ENOMEM;
+}
+
+int rxe_mem_init_dma(struct rxe_dev *rxe, struct rxe_pd *pd,
+ int access, struct rxe_mem *mem)
+{
+ rxe_mem_init(access, mem);
+
+ mem->pd = pd;
+ mem->access = access;
+ mem->state = RXE_MEM_STATE_VALID;
+ mem->type = RXE_MEM_TYPE_DMA;
+
+ return 0;
+}
+
+int rxe_mem_init_user(struct rxe_dev *rxe, struct rxe_pd *pd, u64 start,
+ u64 length, u64 iova, int access, struct ib_udata *udata,
+ struct rxe_mem *mem)
+{
+ int entry;
+ struct rxe_map **map;
+ struct rxe_phys_buf *buf = NULL;
+ struct ib_umem *umem;
+ struct scatterlist *sg;
+ int num_buf;
+ void *vaddr;
+ int err;
+
+ umem = ib_umem_get(pd->ibpd.uobject->context, start, length, access, 0);
+ if (IS_ERR(umem)) {
+ pr_warn("err %d from rxe_umem_get\n",
+ (int)PTR_ERR(umem));
+ err = -EINVAL;
+ goto err1;
+ }
+
+ mem->umem = umem;
+ num_buf = umem->nmap;
+
+ rxe_mem_init(access, mem);
+
+ err = rxe_mem_alloc(rxe, mem, num_buf);
+ if (err) {
+ pr_warn("err %d from rxe_mem_alloc\n", err);
+ ib_umem_release(umem);
+ goto err1;
+ }
+
+ WARN_ON(!is_power_of_2(umem->page_size));
+
+ mem->page_shift = ilog2(umem->page_size);
+ mem->page_mask = umem->page_size - 1;
+
+ num_buf = 0;
+ map = mem->map;
+ if (length > 0) {
+ buf = map[0]->buf;
+
+ for_each_sg(umem->sg_head.sgl, sg, umem->nmap, entry) {
+ vaddr = page_address(sg_page(sg));
+ if (!vaddr) {
+ pr_warn("null vaddr\n");
+ err = -ENOMEM;
+ goto err1;
+ }
+
+ buf->addr = (uintptr_t)vaddr;
+ buf->size = umem->page_size;
+ num_buf++;
+ buf++;
+
+ if (num_buf >= RXE_BUF_PER_MAP) {
+ map++;
+ buf = map[0]->buf;
+ num_buf = 0;
+ }
+ }
+ }
+
+ mem->pd = pd;
+ mem->umem = umem;
+ mem->access = access;
+ mem->length = length;
+ mem->iova = iova;
+ mem->va = start;
+ mem->offset = ib_umem_offset(umem);
+ mem->state = RXE_MEM_STATE_VALID;
+ mem->type = RXE_MEM_TYPE_MR;
+
+ return 0;
+
+err1:
+ return err;
+}
+
+int rxe_mem_init_fast(struct rxe_dev *rxe, struct rxe_pd *pd,
+ int max_pages, struct rxe_mem *mem)
+{
+ int err;
+
+ rxe_mem_init(0, mem);
+
+ /* In fastreg, we also set the rkey */
+ mem->ibmr.rkey = mem->ibmr.lkey;
+
+ err = rxe_mem_alloc(rxe, mem, max_pages);
+ if (err)
+ goto err1;
+
+ mem->pd = pd;
+ mem->max_buf = max_pages;
+ mem->state = RXE_MEM_STATE_FREE;
+ mem->type = RXE_MEM_TYPE_MR;
+
+ return 0;
+
+err1:
+ return err;
+}
+
+static void lookup_iova(
+ struct rxe_mem *mem,
+ u64 iova,
+ int *m_out,
+ int *n_out,
+ size_t *offset_out)
+{
+ size_t offset = iova - mem->iova + mem->offset;
+ int map_index;
+ int buf_index;
+ u64 length;
+
+ if (likely(mem->page_shift)) {
+ *offset_out = offset & mem->page_mask;
+ offset >>= mem->page_shift;
+ *n_out = offset & mem->map_mask;
+ *m_out = offset >> mem->map_shift;
+ } else {
+ map_index = 0;
+ buf_index = 0;
+
+ length = mem->map[map_index]->buf[buf_index].size;
+
+ while (offset >= length) {
+ offset -= length;
+ buf_index++;
+
+ if (buf_index == RXE_BUF_PER_MAP) {
+ map_index++;
+ buf_index = 0;
+ }
+ length = mem->map[map_index]->buf[buf_index].size;
+ }
+
+ *m_out = map_index;
+ *n_out = buf_index;
+ *offset_out = offset;
+ }
+}
+
+void *iova_to_vaddr(struct rxe_mem *mem, u64 iova, int length)
+{
+ size_t offset;
+ int m, n;
+ void *addr;
+
+ if (mem->state != RXE_MEM_STATE_VALID) {
+ pr_warn("mem not in valid state\n");
+ addr = NULL;
+ goto out;
+ }
+
+ if (!mem->map) {
+ addr = (void *)(uintptr_t)iova;
+ goto out;
+ }
+
+ if (mem_check_range(mem, iova, length)) {
+ pr_warn("range violation\n");
+ addr = NULL;
+ goto out;
+ }
+
+ lookup_iova(mem, iova, &m, &n, &offset);
+
+ if (offset + length > mem->map[m]->buf[n].size) {
+ pr_warn("crosses page boundary\n");
+ addr = NULL;
+ goto out;
+ }
+
+ addr = (void *)(uintptr_t)mem->map[m]->buf[n].addr + offset;
+
+out:
+ return addr;
+}
+
+/* copy data from a range (vaddr, vaddr+length-1) to or from
+ * a mem object starting at iova. Compute incremental value of
+ * crc32 if crcp is not zero. caller must hold a reference to mem
+ */
+int rxe_mem_copy(struct rxe_mem *mem, u64 iova, void *addr, int length,
+ enum copy_direction dir, u32 *crcp)
+{
+ int err;
+ int bytes;
+ u8 *va;
+ struct rxe_map **map;
+ struct rxe_phys_buf *buf;
+ int m;
+ int i;
+ size_t offset;
+ u32 crc = crcp ? (*crcp) : 0;
+
+ if (mem->type == RXE_MEM_TYPE_DMA) {
+ u8 *src, *dest;
+
+ src = (dir == to_mem_obj) ?
+ addr : ((void *)(uintptr_t)iova);
+
+ dest = (dir == to_mem_obj) ?
+ ((void *)(uintptr_t)iova) : addr;
+
+ if (crcp)
+ *crcp = crc32_le(*crcp, src, length);
+
+ memcpy(dest, src, length);
+
+ return 0;
+ }
+
+ WARN_ON(!mem->map);
+
+ err = mem_check_range(mem, iova, length);
+ if (err) {
+ err = -EFAULT;
+ goto err1;
+ }
+
+ lookup_iova(mem, iova, &m, &i, &offset);
+
+ map = mem->map + m;
+ buf = map[0]->buf + i;
+
+ while (length > 0) {
+ u8 *src, *dest;
+
+ va = (u8 *)(uintptr_t)buf->addr + offset;
+ src = (dir == to_mem_obj) ? addr : va;
+ dest = (dir == to_mem_obj) ? va : addr;
+
+ bytes = buf->size - offset;
+
+ if (bytes > length)
+ bytes = length;
+
+ if (crcp)
+ crc = crc32_le(crc, src, bytes);
+
+ memcpy(dest, src, bytes);
+
+ length -= bytes;
+ addr += bytes;
+
+ offset = 0;
+ buf++;
+ i++;
+
+ if (i == RXE_BUF_PER_MAP) {
+ i = 0;
+ map++;
+ buf = map[0]->buf;
+ }
+ }
+
+ if (crcp)
+ *crcp = crc;
+
+ return 0;
+
+err1:
+ return err;
+}
+
+/* copy data in or out of a wqe, i.e. sg list
+ * under the control of a dma descriptor
+ */
+int copy_data(
+ struct rxe_dev *rxe,
+ struct rxe_pd *pd,
+ int access,
+ struct rxe_dma_info *dma,
+ void *addr,
+ int length,
+ enum copy_direction dir,
+ u32 *crcp)
+{
+ int bytes;
+ struct rxe_sge *sge = &dma->sge[dma->cur_sge];
+ int offset = dma->sge_offset;
+ int resid = dma->resid;
+ struct rxe_mem *mem = NULL;
+ u64 iova;
+ int err;
+
+ if (length == 0)
+ return 0;
+
+ if (length > resid) {
+ err = -EINVAL;
+ goto err2;
+ }
+
+ if (sge->length && (offset < sge->length)) {
+ mem = lookup_mem(pd, access, sge->lkey, lookup_local);
+ if (!mem) {
+ err = -EINVAL;
+ goto err1;
+ }
+ }
+
+ while (length > 0) {
+ bytes = length;
+
+ if (offset >= sge->length) {
+ if (mem) {
+ rxe_drop_ref(mem);
+ mem = NULL;
+ }
+ sge++;
+ dma->cur_sge++;
+ offset = 0;
+
+ if (dma->cur_sge >= dma->num_sge) {
+ err = -ENOSPC;
+ goto err2;
+ }
+
+ if (sge->length) {
+ mem = lookup_mem(pd, access, sge->lkey,
+ lookup_local);
+ if (!mem) {
+ err = -EINVAL;
+ goto err1;
+ }
+ } else {
+ continue;
+ }
+ }
+
+ if (bytes > sge->length - offset)
+ bytes = sge->length - offset;
+
+ if (bytes > 0) {
+ iova = sge->addr + offset;
+
+ err = rxe_mem_copy(mem, iova, addr, bytes, dir, crcp);
+ if (err)
+ goto err2;
+
+ offset += bytes;
+ resid -= bytes;
+ length -= bytes;
+ addr += bytes;
+ }
+ }
+
+ dma->sge_offset = offset;
+ dma->resid = resid;
+
+ if (mem)
+ rxe_drop_ref(mem);
+
+ return 0;
+
+err2:
+ if (mem)
+ rxe_drop_ref(mem);
+err1:
+ return err;
+}
+
+int advance_dma_data(struct rxe_dma_info *dma, unsigned int length)
+{
+ struct rxe_sge *sge = &dma->sge[dma->cur_sge];
+ int offset = dma->sge_offset;
+ int resid = dma->resid;
+
+ while (length) {
+ unsigned int bytes;
+
+ if (offset >= sge->length) {
+ sge++;
+ dma->cur_sge++;
+ offset = 0;
+ if (dma->cur_sge >= dma->num_sge)
+ return -ENOSPC;
+ }
+
+ bytes = length;
+
+ if (bytes > sge->length - offset)
+ bytes = sge->length - offset;
+
+ offset += bytes;
+ resid -= bytes;
+ length -= bytes;
+ }
+
+ dma->sge_offset = offset;
+ dma->resid = resid;
+
+ return 0;
+}
+
+/* (1) find the mem (mr or mw) corresponding to lkey/rkey
+ * depending on lookup_type
+ * (2) verify that the (qp) pd matches the mem pd
+ * (3) verify that the mem can support the requested access
+ * (4) verify that mem state is valid
+ */
+struct rxe_mem *lookup_mem(struct rxe_pd *pd, int access, u32 key,
+ enum lookup_type type)
+{
+ struct rxe_mem *mem;
+ struct rxe_dev *rxe = to_rdev(pd->ibpd.device);
+ int index = key >> 8;
+
+ if (index >= RXE_MIN_MR_INDEX && index <= RXE_MAX_MR_INDEX) {
+ mem = rxe_pool_get_index(&rxe->mr_pool, index);
+ if (!mem)
+ goto err1;
+ } else {
+ goto err1;
+ }
+
+ if ((type == lookup_local && mem->lkey != key) ||
+ (type == lookup_remote && mem->rkey != key))
+ goto err2;
+
+ if (mem->pd != pd)
+ goto err2;
+
+ if (access && !(access & mem->access))
+ goto err2;
+
+ if (mem->state != RXE_MEM_STATE_VALID)
+ goto err2;
+
+ return mem;
+
+err2:
+ rxe_drop_ref(mem);
+err1:
+ return NULL;
+}
+
+int rxe_mem_map_pages(struct rxe_dev *rxe, struct rxe_mem *mem,
+ u64 *page, int num_pages, u64 iova)
+{
+ int i;
+ int num_buf;
+ int err;
+ struct rxe_map **map;
+ struct rxe_phys_buf *buf;
+ int page_size;
+
+ if (num_pages > mem->max_buf) {
+ err = -EINVAL;
+ goto err1;
+ }
+
+ num_buf = 0;
+ page_size = 1 << mem->page_shift;
+ map = mem->map;
+ buf = map[0]->buf;
+
+ for (i = 0; i < num_pages; i++) {
+ buf->addr = *page++;
+ buf->size = page_size;
+ buf++;
+ num_buf++;
+
+ if (num_buf == RXE_BUF_PER_MAP) {
+ map++;
+ buf = map[0]->buf;
+ num_buf = 0;
+ }
+ }
+
+ mem->iova = iova;
+ mem->va = iova;
+ mem->length = num_pages << mem->page_shift;
+ mem->state = RXE_MEM_STATE_VALID;
+
+ return 0;
+
+err1:
+ return err;
+}
diff --git a/drivers/infiniband/sw/rxe/rxe_net.c b/drivers/infiniband/sw/rxe/rxe_net.c
new file mode 100644
index 000000000000..0b8d2ea8b41d
--- /dev/null
+++ b/drivers/infiniband/sw/rxe/rxe_net.c
@@ -0,0 +1,708 @@
+/*
+ * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
+ * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/skbuff.h>
+#include <linux/if_arp.h>
+#include <linux/netdevice.h>
+#include <linux/if.h>
+#include <linux/if_vlan.h>
+#include <net/udp_tunnel.h>
+#include <net/sch_generic.h>
+#include <linux/netfilter.h>
+#include <rdma/ib_addr.h>
+
+#include "rxe.h"
+#include "rxe_net.h"
+#include "rxe_loc.h"
+
+static LIST_HEAD(rxe_dev_list);
+static spinlock_t dev_list_lock; /* spinlock for device list */
+
+struct rxe_dev *net_to_rxe(struct net_device *ndev)
+{
+ struct rxe_dev *rxe;
+ struct rxe_dev *found = NULL;
+
+ spin_lock_bh(&dev_list_lock);
+ list_for_each_entry(rxe, &rxe_dev_list, list) {
+ if (rxe->ndev == ndev) {
+ found = rxe;
+ break;
+ }
+ }
+ spin_unlock_bh(&dev_list_lock);
+
+ return found;
+}
+
+struct rxe_dev *get_rxe_by_name(const char* name)
+{
+ struct rxe_dev *rxe;
+ struct rxe_dev *found = NULL;
+
+ spin_lock_bh(&dev_list_lock);
+ list_for_each_entry(rxe, &rxe_dev_list, list) {
+ if (!strcmp(name, rxe->ib_dev.name)) {
+ found = rxe;
+ break;
+ }
+ }
+ spin_unlock_bh(&dev_list_lock);
+ return found;
+}
+
+
+struct rxe_recv_sockets recv_sockets;
+
+static __be64 rxe_mac_to_eui64(struct net_device *ndev)
+{
+ unsigned char *mac_addr = ndev->dev_addr;
+ __be64 eui64;
+ unsigned char *dst = (unsigned char *)&eui64;
+
+ dst[0] = mac_addr[0] ^ 2;
+ dst[1] = mac_addr[1];
+ dst[2] = mac_addr[2];
+ dst[3] = 0xff;
+ dst[4] = 0xfe;
+ dst[5] = mac_addr[3];
+ dst[6] = mac_addr[4];
+ dst[7] = mac_addr[5];
+
+ return eui64;
+}
+
+static __be64 node_guid(struct rxe_dev *rxe)
+{
+ return rxe_mac_to_eui64(rxe->ndev);
+}
+
+static __be64 port_guid(struct rxe_dev *rxe)
+{
+ return rxe_mac_to_eui64(rxe->ndev);
+}
+
+static struct device *dma_device(struct rxe_dev *rxe)
+{
+ struct net_device *ndev;
+
+ ndev = rxe->ndev;
+
+ if (ndev->priv_flags & IFF_802_1Q_VLAN)
+ ndev = vlan_dev_real_dev(ndev);
+
+ return ndev->dev.parent;
+}
+
+static int mcast_add(struct rxe_dev *rxe, union ib_gid *mgid)
+{
+ int err;
+ unsigned char ll_addr[ETH_ALEN];
+
+ ipv6_eth_mc_map((struct in6_addr *)mgid->raw, ll_addr);
+ err = dev_mc_add(rxe->ndev, ll_addr);
+
+ return err;
+}
+
+static int mcast_delete(struct rxe_dev *rxe, union ib_gid *mgid)
+{
+ int err;
+ unsigned char ll_addr[ETH_ALEN];
+
+ ipv6_eth_mc_map((struct in6_addr *)mgid->raw, ll_addr);
+ err = dev_mc_del(rxe->ndev, ll_addr);
+
+ return err;
+}
+
+static struct dst_entry *rxe_find_route4(struct net_device *ndev,
+ struct in_addr *saddr,
+ struct in_addr *daddr)
+{
+ struct rtable *rt;
+ struct flowi4 fl = { { 0 } };
+
+ memset(&fl, 0, sizeof(fl));
+ fl.flowi4_oif = ndev->ifindex;
+ memcpy(&fl.saddr, saddr, sizeof(*saddr));
+ memcpy(&fl.daddr, daddr, sizeof(*daddr));
+ fl.flowi4_proto = IPPROTO_UDP;
+
+ rt = ip_route_output_key(&init_net, &fl);
+ if (IS_ERR(rt)) {
+ pr_err_ratelimited("no route to %pI4\n", &daddr->s_addr);
+ return NULL;
+ }
+
+ return &rt->dst;
+}
+
+#if IS_ENABLED(CONFIG_IPV6)
+static struct dst_entry *rxe_find_route6(struct net_device *ndev,
+ struct in6_addr *saddr,
+ struct in6_addr *daddr)
+{
+ struct dst_entry *ndst;
+ struct flowi6 fl6 = { { 0 } };
+
+ memset(&fl6, 0, sizeof(fl6));
+ fl6.flowi6_oif = ndev->ifindex;
+ memcpy(&fl6.saddr, saddr, sizeof(*saddr));
+ memcpy(&fl6.daddr, daddr, sizeof(*daddr));
+ fl6.flowi6_proto = IPPROTO_UDP;
+
+ if (unlikely(ipv6_stub->ipv6_dst_lookup(sock_net(recv_sockets.sk6->sk),
+ recv_sockets.sk6->sk, &ndst, &fl6))) {
+ pr_err_ratelimited("no route to %pI6\n", daddr);
+ goto put;
+ }
+
+ if (unlikely(ndst->error)) {
+ pr_err("no route to %pI6\n", daddr);
+ goto put;
+ }
+
+ return ndst;
+put:
+ dst_release(ndst);
+ return NULL;
+}
+
+#else
+
+static struct dst_entry *rxe_find_route6(struct net_device *ndev,
+ struct in6_addr *saddr,
+ struct in6_addr *daddr)
+{
+ return NULL;
+}
+
+#endif
+
+static int rxe_udp_encap_recv(struct sock *sk, struct sk_buff *skb)
+{
+ struct udphdr *udph;
+ struct net_device *ndev = skb->dev;
+ struct rxe_dev *rxe = net_to_rxe(ndev);
+ struct rxe_pkt_info *pkt = SKB_TO_PKT(skb);
+
+ if (!rxe)
+ goto drop;
+
+ if (skb_linearize(skb)) {
+ pr_err("skb_linearize failed\n");
+ goto drop;
+ }
+
+ udph = udp_hdr(skb);
+ pkt->rxe = rxe;
+ pkt->port_num = 1;
+ pkt->hdr = (u8 *)(udph + 1);
+ pkt->mask = RXE_GRH_MASK;
+ pkt->paylen = be16_to_cpu(udph->len) - sizeof(*udph);
+
+ return rxe_rcv(skb);
+drop:
+ kfree_skb(skb);
+ return 0;
+}
+
+static struct socket *rxe_setup_udp_tunnel(struct net *net, __be16 port,
+ bool ipv6)
+{
+ int err;
+ struct socket *sock;
+ struct udp_port_cfg udp_cfg;
+ struct udp_tunnel_sock_cfg tnl_cfg;
+
+ memset(&udp_cfg, 0, sizeof(udp_cfg));
+
+ if (ipv6) {
+ udp_cfg.family = AF_INET6;
+ udp_cfg.ipv6_v6only = 1;
+ } else {
+ udp_cfg.family = AF_INET;
+ }
+
+ udp_cfg.local_udp_port = port;
+
+ /* Create UDP socket */
+ err = udp_sock_create(net, &udp_cfg, &sock);
+ if (err < 0) {
+ pr_err("failed to create udp socket. err = %d\n", err);
+ return ERR_PTR(err);
+ }
+
+ tnl_cfg.sk_user_data = NULL;
+ tnl_cfg.encap_type = 1;
+ tnl_cfg.encap_rcv = rxe_udp_encap_recv;
+ tnl_cfg.encap_destroy = NULL;
+
+ /* Setup UDP tunnel */
+ setup_udp_tunnel_sock(net, sock, &tnl_cfg);
+
+ return sock;
+}
+
+static void rxe_release_udp_tunnel(struct socket *sk)
+{
+ udp_tunnel_sock_release(sk);
+}
+
+static void prepare_udp_hdr(struct sk_buff *skb, __be16 src_port,
+ __be16 dst_port)
+{
+ struct udphdr *udph;
+
+ __skb_push(skb, sizeof(*udph));
+ skb_reset_transport_header(skb);
+ udph = udp_hdr(skb);
+
+ udph->dest = dst_port;
+ udph->source = src_port;
+ udph->len = htons(skb->len);
+ udph->check = 0;
+}
+
+static void prepare_ipv4_hdr(struct dst_entry *dst, struct sk_buff *skb,
+ __be32 saddr, __be32 daddr, __u8 proto,
+ __u8 tos, __u8 ttl, __be16 df, bool xnet)
+{
+ struct iphdr *iph;
+
+ skb_scrub_packet(skb, xnet);
+
+ skb_clear_hash(skb);
+ skb_dst_set(skb, dst);
+ memset(IPCB(skb), 0, sizeof(*IPCB(skb)));
+
+ skb_push(skb, sizeof(struct iphdr));
+ skb_reset_network_header(skb);
+
+ iph = ip_hdr(skb);
+
+ iph->version = IPVERSION;
+ iph->ihl = sizeof(struct iphdr) >> 2;
+ iph->frag_off = df;
+ iph->protocol = proto;
+ iph->tos = tos;
+ iph->daddr = daddr;
+ iph->saddr = saddr;
+ iph->ttl = ttl;
+ __ip_select_ident(dev_net(dst->dev), iph,
+ skb_shinfo(skb)->gso_segs ?: 1);
+ iph->tot_len = htons(skb->len);
+ ip_send_check(iph);
+}
+
+static void prepare_ipv6_hdr(struct dst_entry *dst, struct sk_buff *skb,
+ struct in6_addr *saddr, struct in6_addr *daddr,
+ __u8 proto, __u8 prio, __u8 ttl)
+{
+ struct ipv6hdr *ip6h;
+
+ memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt));
+ IPCB(skb)->flags &= ~(IPSKB_XFRM_TUNNEL_SIZE | IPSKB_XFRM_TRANSFORMED
+ | IPSKB_REROUTED);
+ skb_dst_set(skb, dst);
+
+ __skb_push(skb, sizeof(*ip6h));
+ skb_reset_network_header(skb);
+ ip6h = ipv6_hdr(skb);
+ ip6_flow_hdr(ip6h, prio, htonl(0));
+ ip6h->payload_len = htons(skb->len);
+ ip6h->nexthdr = proto;
+ ip6h->hop_limit = ttl;
+ ip6h->daddr = *daddr;
+ ip6h->saddr = *saddr;
+ ip6h->payload_len = htons(skb->len - sizeof(*ip6h));
+}
+
+static int prepare4(struct rxe_dev *rxe, struct sk_buff *skb, struct rxe_av *av)
+{
+ struct dst_entry *dst;
+ bool xnet = false;
+ __be16 df = htons(IP_DF);
+ struct in_addr *saddr = &av->sgid_addr._sockaddr_in.sin_addr;
+ struct in_addr *daddr = &av->dgid_addr._sockaddr_in.sin_addr;
+ struct rxe_pkt_info *pkt = SKB_TO_PKT(skb);
+
+ dst = rxe_find_route4(rxe->ndev, saddr, daddr);
+ if (!dst) {
+ pr_err("Host not reachable\n");
+ return -EHOSTUNREACH;
+ }
+
+ if (!memcmp(saddr, daddr, sizeof(*daddr)))
+ pkt->mask |= RXE_LOOPBACK_MASK;
+
+ prepare_udp_hdr(skb, htons(RXE_ROCE_V2_SPORT),
+ htons(ROCE_V2_UDP_DPORT));
+
+ prepare_ipv4_hdr(dst, skb, saddr->s_addr, daddr->s_addr, IPPROTO_UDP,
+ av->grh.traffic_class, av->grh.hop_limit, df, xnet);
+ return 0;
+}
+
+static int prepare6(struct rxe_dev *rxe, struct sk_buff *skb, struct rxe_av *av)
+{
+ struct dst_entry *dst;
+ struct in6_addr *saddr = &av->sgid_addr._sockaddr_in6.sin6_addr;
+ struct in6_addr *daddr = &av->dgid_addr._sockaddr_in6.sin6_addr;
+ struct rxe_pkt_info *pkt = SKB_TO_PKT(skb);
+
+ dst = rxe_find_route6(rxe->ndev, saddr, daddr);
+ if (!dst) {
+ pr_err("Host not reachable\n");
+ return -EHOSTUNREACH;
+ }
+
+ if (!memcmp(saddr, daddr, sizeof(*daddr)))
+ pkt->mask |= RXE_LOOPBACK_MASK;
+
+ prepare_udp_hdr(skb, htons(RXE_ROCE_V2_SPORT),
+ htons(ROCE_V2_UDP_DPORT));
+
+ prepare_ipv6_hdr(dst, skb, saddr, daddr, IPPROTO_UDP,
+ av->grh.traffic_class,
+ av->grh.hop_limit);
+ return 0;
+}
+
+static int prepare(struct rxe_dev *rxe, struct rxe_pkt_info *pkt,
+ struct sk_buff *skb, u32 *crc)
+{
+ int err = 0;
+ struct rxe_av *av = rxe_get_av(pkt);
+
+ if (av->network_type == RDMA_NETWORK_IPV4)
+ err = prepare4(rxe, skb, av);
+ else if (av->network_type == RDMA_NETWORK_IPV6)
+ err = prepare6(rxe, skb, av);
+
+ *crc = rxe_icrc_hdr(pkt, skb);
+
+ return err;
+}
+
+static void rxe_skb_tx_dtor(struct sk_buff *skb)
+{
+ struct sock *sk = skb->sk;
+ struct rxe_qp *qp = sk->sk_user_data;
+ int skb_out = atomic_dec_return(&qp->skb_out);
+
+ if (unlikely(qp->need_req_skb &&
+ skb_out < RXE_INFLIGHT_SKBS_PER_QP_LOW))
+ rxe_run_task(&qp->req.task, 1);
+}
+
+static int send(struct rxe_dev *rxe, struct rxe_pkt_info *pkt,
+ struct sk_buff *skb)
+{
+ struct sk_buff *nskb;
+ struct rxe_av *av;
+ int err;
+
+ av = rxe_get_av(pkt);
+
+ nskb = skb_clone(skb, GFP_ATOMIC);
+ if (!nskb)
+ return -ENOMEM;
+
+ nskb->destructor = rxe_skb_tx_dtor;
+ nskb->sk = pkt->qp->sk->sk;
+
+ if (av->network_type == RDMA_NETWORK_IPV4) {
+ err = ip_local_out(dev_net(skb_dst(skb)->dev), nskb->sk, nskb);
+ } else if (av->network_type == RDMA_NETWORK_IPV6) {
+ err = ip6_local_out(dev_net(skb_dst(skb)->dev), nskb->sk, nskb);
+ } else {
+ pr_err("Unknown layer 3 protocol: %d\n", av->network_type);
+ kfree_skb(nskb);
+ return -EINVAL;
+ }
+
+ if (unlikely(net_xmit_eval(err))) {
+ pr_debug("error sending packet: %d\n", err);
+ return -EAGAIN;
+ }
+
+ kfree_skb(skb);
+
+ return 0;
+}
+
+static int loopback(struct sk_buff *skb)
+{
+ return rxe_rcv(skb);
+}
+
+static inline int addr_same(struct rxe_dev *rxe, struct rxe_av *av)
+{
+ return rxe->port.port_guid == av->grh.dgid.global.interface_id;
+}
+
+static struct sk_buff *init_packet(struct rxe_dev *rxe, struct rxe_av *av,
+ int paylen, struct rxe_pkt_info *pkt)
+{
+ unsigned int hdr_len;
+ struct sk_buff *skb;
+
+ if (av->network_type == RDMA_NETWORK_IPV4)
+ hdr_len = ETH_HLEN + sizeof(struct udphdr) +
+ sizeof(struct iphdr);
+ else
+ hdr_len = ETH_HLEN + sizeof(struct udphdr) +
+ sizeof(struct ipv6hdr);
+
+ skb = alloc_skb(paylen + hdr_len + LL_RESERVED_SPACE(rxe->ndev),
+ GFP_ATOMIC);
+ if (unlikely(!skb))
+ return NULL;
+
+ skb_reserve(skb, hdr_len + LL_RESERVED_SPACE(rxe->ndev));
+
+ skb->dev = rxe->ndev;
+ if (av->network_type == RDMA_NETWORK_IPV4)
+ skb->protocol = htons(ETH_P_IP);
+ else
+ skb->protocol = htons(ETH_P_IPV6);
+
+ pkt->rxe = rxe;
+ pkt->port_num = 1;
+ pkt->hdr = skb_put(skb, paylen);
+ pkt->mask |= RXE_GRH_MASK;
+
+ memset(pkt->hdr, 0, paylen);
+
+ return skb;
+}
+
+/*
+ * this is required by rxe_cfg to match rxe devices in
+ * /sys/class/infiniband up with their underlying ethernet devices
+ */
+static char *parent_name(struct rxe_dev *rxe, unsigned int port_num)
+{
+ return rxe->ndev->name;
+}
+
+static enum rdma_link_layer link_layer(struct rxe_dev *rxe,
+ unsigned int port_num)
+{
+ return IB_LINK_LAYER_ETHERNET;
+}
+
+static struct rxe_ifc_ops ifc_ops = {
+ .node_guid = node_guid,
+ .port_guid = port_guid,
+ .dma_device = dma_device,
+ .mcast_add = mcast_add,
+ .mcast_delete = mcast_delete,
+ .prepare = prepare,
+ .send = send,
+ .loopback = loopback,
+ .init_packet = init_packet,
+ .parent_name = parent_name,
+ .link_layer = link_layer,
+};
+
+struct rxe_dev *rxe_net_add(struct net_device *ndev)
+{
+ int err;
+ struct rxe_dev *rxe = NULL;
+
+ rxe = (struct rxe_dev *)ib_alloc_device(sizeof(*rxe));
+ if (!rxe)
+ return NULL;
+
+ rxe->ifc_ops = &ifc_ops;
+ rxe->ndev = ndev;
+
+ err = rxe_add(rxe, ndev->mtu);
+ if (err) {
+ ib_dealloc_device(&rxe->ib_dev);
+ return NULL;
+ }
+
+ spin_lock_bh(&dev_list_lock);
+ list_add_tail(&rxe_dev_list, &rxe->list);
+ spin_unlock_bh(&dev_list_lock);
+ return rxe;
+}
+
+void rxe_remove_all(void)
+{
+ spin_lock_bh(&dev_list_lock);
+ while (!list_empty(&rxe_dev_list)) {
+ struct rxe_dev *rxe =
+ list_first_entry(&rxe_dev_list, struct rxe_dev, list);
+
+ list_del(&rxe->list);
+ spin_unlock_bh(&dev_list_lock);
+ rxe_remove(rxe);
+ spin_lock_bh(&dev_list_lock);
+ }
+ spin_unlock_bh(&dev_list_lock);
+}
+EXPORT_SYMBOL(rxe_remove_all);
+
+static void rxe_port_event(struct rxe_dev *rxe,
+ enum ib_event_type event)
+{
+ struct ib_event ev;
+
+ ev.device = &rxe->ib_dev;
+ ev.element.port_num = 1;
+ ev.event = event;
+
+ ib_dispatch_event(&ev);
+}
+
+/* Caller must hold net_info_lock */
+void rxe_port_up(struct rxe_dev *rxe)
+{
+ struct rxe_port *port;
+
+ port = &rxe->port;
+ port->attr.state = IB_PORT_ACTIVE;
+ port->attr.phys_state = IB_PHYS_STATE_LINK_UP;
+
+ rxe_port_event(rxe, IB_EVENT_PORT_ACTIVE);
+ pr_info("rxe: set %s active\n", rxe->ib_dev.name);
+ return;
+}
+
+/* Caller must hold net_info_lock */
+void rxe_port_down(struct rxe_dev *rxe)
+{
+ struct rxe_port *port;
+
+ port = &rxe->port;
+ port->attr.state = IB_PORT_DOWN;
+ port->attr.phys_state = IB_PHYS_STATE_LINK_DOWN;
+
+ rxe_port_event(rxe, IB_EVENT_PORT_ERR);
+ pr_info("rxe: set %s down\n", rxe->ib_dev.name);
+ return;
+}
+
+static int rxe_notify(struct notifier_block *not_blk,
+ unsigned long event,
+ void *arg)
+{
+ struct net_device *ndev = netdev_notifier_info_to_dev(arg);
+ struct rxe_dev *rxe = net_to_rxe(ndev);
+
+ if (!rxe)
+ goto out;
+
+ switch (event) {
+ case NETDEV_UNREGISTER:
+ list_del(&rxe->list);
+ rxe_remove(rxe);
+ break;
+ case NETDEV_UP:
+ rxe_port_up(rxe);
+ break;
+ case NETDEV_DOWN:
+ rxe_port_down(rxe);
+ break;
+ case NETDEV_CHANGEMTU:
+ pr_info("rxe: %s changed mtu to %d\n", ndev->name, ndev->mtu);
+ rxe_set_mtu(rxe, ndev->mtu);
+ break;
+ case NETDEV_REBOOT:
+ case NETDEV_CHANGE:
+ case NETDEV_GOING_DOWN:
+ case NETDEV_CHANGEADDR:
+ case NETDEV_CHANGENAME:
+ case NETDEV_FEAT_CHANGE:
+ default:
+ pr_info("rxe: ignoring netdev event = %ld for %s\n",
+ event, ndev->name);
+ break;
+ }
+out:
+ return NOTIFY_OK;
+}
+
+static struct notifier_block rxe_net_notifier = {
+ .notifier_call = rxe_notify,
+};
+
+int rxe_net_init(void)
+{
+ int err;
+
+ spin_lock_init(&dev_list_lock);
+
+ recv_sockets.sk6 = rxe_setup_udp_tunnel(&init_net,
+ htons(ROCE_V2_UDP_DPORT), true);
+ if (IS_ERR(recv_sockets.sk6)) {
+ recv_sockets.sk6 = NULL;
+ pr_err("rxe: Failed to create IPv6 UDP tunnel\n");
+ return -1;
+ }
+
+ recv_sockets.sk4 = rxe_setup_udp_tunnel(&init_net,
+ htons(ROCE_V2_UDP_DPORT), false);
+ if (IS_ERR(recv_sockets.sk4)) {
+ rxe_release_udp_tunnel(recv_sockets.sk6);
+ recv_sockets.sk4 = NULL;
+ recv_sockets.sk6 = NULL;
+ pr_err("rxe: Failed to create IPv4 UDP tunnel\n");
+ return -1;
+ }
+
+ err = register_netdevice_notifier(&rxe_net_notifier);
+ if (err) {
+ rxe_release_udp_tunnel(recv_sockets.sk6);
+ rxe_release_udp_tunnel(recv_sockets.sk4);
+ pr_err("rxe: Failed to rigister netdev notifier\n");
+ }
+
+ return err;
+}
+
+void rxe_net_exit(void)
+{
+ if (recv_sockets.sk6)
+ rxe_release_udp_tunnel(recv_sockets.sk6);
+
+ if (recv_sockets.sk4)
+ rxe_release_udp_tunnel(recv_sockets.sk4);
+
+ unregister_netdevice_notifier(&rxe_net_notifier);
+}
diff --git a/drivers/infiniband/sw/rxe/rxe_net.h b/drivers/infiniband/sw/rxe/rxe_net.h
new file mode 100644
index 000000000000..7b06f76d16cc
--- /dev/null
+++ b/drivers/infiniband/sw/rxe/rxe_net.h
@@ -0,0 +1,53 @@
+/*
+ * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
+ * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef RXE_NET_H
+#define RXE_NET_H
+
+#include <net/sock.h>
+#include <net/if_inet6.h>
+#include <linux/module.h>
+
+struct rxe_recv_sockets {
+ struct socket *sk4;
+ struct socket *sk6;
+};
+
+extern struct rxe_recv_sockets recv_sockets;
+
+struct rxe_dev *rxe_net_add(struct net_device *ndev);
+
+int rxe_net_init(void);
+void rxe_net_exit(void);
+
+#endif /* RXE_NET_H */
diff --git a/drivers/infiniband/sw/rxe/rxe_opcode.c b/drivers/infiniband/sw/rxe/rxe_opcode.c
new file mode 100644
index 000000000000..61927c165b59
--- /dev/null
+++ b/drivers/infiniband/sw/rxe/rxe_opcode.c
@@ -0,0 +1,961 @@
+/*
+ * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
+ * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <rdma/ib_pack.h>
+#include "rxe_opcode.h"
+#include "rxe_hdr.h"
+
+/* useful information about work request opcodes and pkt opcodes in
+ * table form
+ */
+struct rxe_wr_opcode_info rxe_wr_opcode_info[] = {
+ [IB_WR_RDMA_WRITE] = {
+ .name = "IB_WR_RDMA_WRITE",
+ .mask = {
+ [IB_QPT_RC] = WR_INLINE_MASK | WR_WRITE_MASK,
+ [IB_QPT_UC] = WR_INLINE_MASK | WR_WRITE_MASK,
+ },
+ },
+ [IB_WR_RDMA_WRITE_WITH_IMM] = {
+ .name = "IB_WR_RDMA_WRITE_WITH_IMM",
+ .mask = {
+ [IB_QPT_RC] = WR_INLINE_MASK | WR_WRITE_MASK,
+ [IB_QPT_UC] = WR_INLINE_MASK | WR_WRITE_MASK,
+ },
+ },
+ [IB_WR_SEND] = {
+ .name = "IB_WR_SEND",
+ .mask = {
+ [IB_QPT_SMI] = WR_INLINE_MASK | WR_SEND_MASK,
+ [IB_QPT_GSI] = WR_INLINE_MASK | WR_SEND_MASK,
+ [IB_QPT_RC] = WR_INLINE_MASK | WR_SEND_MASK,
+ [IB_QPT_UC] = WR_INLINE_MASK | WR_SEND_MASK,
+ [IB_QPT_UD] = WR_INLINE_MASK | WR_SEND_MASK,
+ },
+ },
+ [IB_WR_SEND_WITH_IMM] = {
+ .name = "IB_WR_SEND_WITH_IMM",
+ .mask = {
+ [IB_QPT_SMI] = WR_INLINE_MASK | WR_SEND_MASK,
+ [IB_QPT_GSI] = WR_INLINE_MASK | WR_SEND_MASK,
+ [IB_QPT_RC] = WR_INLINE_MASK | WR_SEND_MASK,
+ [IB_QPT_UC] = WR_INLINE_MASK | WR_SEND_MASK,
+ [IB_QPT_UD] = WR_INLINE_MASK | WR_SEND_MASK,
+ },
+ },
+ [IB_WR_RDMA_READ] = {
+ .name = "IB_WR_RDMA_READ",
+ .mask = {
+ [IB_QPT_RC] = WR_READ_MASK,
+ },
+ },
+ [IB_WR_ATOMIC_CMP_AND_SWP] = {
+ .name = "IB_WR_ATOMIC_CMP_AND_SWP",
+ .mask = {
+ [IB_QPT_RC] = WR_ATOMIC_MASK,
+ },
+ },
+ [IB_WR_ATOMIC_FETCH_AND_ADD] = {
+ .name = "IB_WR_ATOMIC_FETCH_AND_ADD",
+ .mask = {
+ [IB_QPT_RC] = WR_ATOMIC_MASK,
+ },
+ },
+ [IB_WR_LSO] = {
+ .name = "IB_WR_LSO",
+ .mask = {
+ /* not supported */
+ },
+ },
+ [IB_WR_SEND_WITH_INV] = {
+ .name = "IB_WR_SEND_WITH_INV",
+ .mask = {
+ [IB_QPT_RC] = WR_INLINE_MASK | WR_SEND_MASK,
+ [IB_QPT_UC] = WR_INLINE_MASK | WR_SEND_MASK,
+ [IB_QPT_UD] = WR_INLINE_MASK | WR_SEND_MASK,
+ },
+ },
+ [IB_WR_RDMA_READ_WITH_INV] = {
+ .name = "IB_WR_RDMA_READ_WITH_INV",
+ .mask = {
+ [IB_QPT_RC] = WR_READ_MASK,
+ },
+ },
+ [IB_WR_LOCAL_INV] = {
+ .name = "IB_WR_LOCAL_INV",
+ .mask = {
+ [IB_QPT_RC] = WR_REG_MASK,
+ },
+ },
+ [IB_WR_REG_MR] = {
+ .name = "IB_WR_REG_MR",
+ .mask = {
+ [IB_QPT_RC] = WR_REG_MASK,
+ },
+ },
+};
+
+struct rxe_opcode_info rxe_opcode[RXE_NUM_OPCODE] = {
+ [IB_OPCODE_RC_SEND_FIRST] = {
+ .name = "IB_OPCODE_RC_SEND_FIRST",
+ .mask = RXE_PAYLOAD_MASK | RXE_REQ_MASK | RXE_RWR_MASK
+ | RXE_SEND_MASK | RXE_START_MASK,
+ .length = RXE_BTH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES,
+ }
+ },
+ [IB_OPCODE_RC_SEND_MIDDLE] = {
+ .name = "IB_OPCODE_RC_SEND_MIDDLE]",
+ .mask = RXE_PAYLOAD_MASK | RXE_REQ_MASK | RXE_SEND_MASK
+ | RXE_MIDDLE_MASK,
+ .length = RXE_BTH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES,
+ }
+ },
+ [IB_OPCODE_RC_SEND_LAST] = {
+ .name = "IB_OPCODE_RC_SEND_LAST",
+ .mask = RXE_PAYLOAD_MASK | RXE_REQ_MASK | RXE_COMP_MASK
+ | RXE_SEND_MASK | RXE_END_MASK,
+ .length = RXE_BTH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES,
+ }
+ },
+ [IB_OPCODE_RC_SEND_LAST_WITH_IMMEDIATE] = {
+ .name = "IB_OPCODE_RC_SEND_LAST_WITH_IMMEDIATE",
+ .mask = RXE_IMMDT_MASK | RXE_PAYLOAD_MASK | RXE_REQ_MASK
+ | RXE_COMP_MASK | RXE_SEND_MASK | RXE_END_MASK,
+ .length = RXE_BTH_BYTES + RXE_IMMDT_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_IMMDT] = RXE_BTH_BYTES,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES
+ + RXE_IMMDT_BYTES,
+ }
+ },
+ [IB_OPCODE_RC_SEND_ONLY] = {
+ .name = "IB_OPCODE_RC_SEND_ONLY",
+ .mask = RXE_PAYLOAD_MASK | RXE_REQ_MASK | RXE_COMP_MASK
+ | RXE_RWR_MASK | RXE_SEND_MASK
+ | RXE_START_MASK | RXE_END_MASK,
+ .length = RXE_BTH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES,
+ }
+ },
+ [IB_OPCODE_RC_SEND_ONLY_WITH_IMMEDIATE] = {
+ .name = "IB_OPCODE_RC_SEND_ONLY_WITH_IMMEDIATE",
+ .mask = RXE_IMMDT_MASK | RXE_PAYLOAD_MASK | RXE_REQ_MASK
+ | RXE_COMP_MASK | RXE_RWR_MASK | RXE_SEND_MASK
+ | RXE_START_MASK | RXE_END_MASK,
+ .length = RXE_BTH_BYTES + RXE_IMMDT_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_IMMDT] = RXE_BTH_BYTES,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES
+ + RXE_IMMDT_BYTES,
+ }
+ },
+ [IB_OPCODE_RC_RDMA_WRITE_FIRST] = {
+ .name = "IB_OPCODE_RC_RDMA_WRITE_FIRST",
+ .mask = RXE_RETH_MASK | RXE_PAYLOAD_MASK | RXE_REQ_MASK
+ | RXE_WRITE_MASK | RXE_START_MASK,
+ .length = RXE_BTH_BYTES + RXE_RETH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_RETH] = RXE_BTH_BYTES,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES
+ + RXE_RETH_BYTES,
+ }
+ },
+ [IB_OPCODE_RC_RDMA_WRITE_MIDDLE] = {
+ .name = "IB_OPCODE_RC_RDMA_WRITE_MIDDLE",
+ .mask = RXE_PAYLOAD_MASK | RXE_REQ_MASK | RXE_WRITE_MASK
+ | RXE_MIDDLE_MASK,
+ .length = RXE_BTH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES,
+ }
+ },
+ [IB_OPCODE_RC_RDMA_WRITE_LAST] = {
+ .name = "IB_OPCODE_RC_RDMA_WRITE_LAST",
+ .mask = RXE_PAYLOAD_MASK | RXE_REQ_MASK | RXE_WRITE_MASK
+ | RXE_END_MASK,
+ .length = RXE_BTH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES,
+ }
+ },
+ [IB_OPCODE_RC_RDMA_WRITE_LAST_WITH_IMMEDIATE] = {
+ .name = "IB_OPCODE_RC_RDMA_WRITE_LAST_WITH_IMMEDIATE",
+ .mask = RXE_IMMDT_MASK | RXE_PAYLOAD_MASK | RXE_REQ_MASK
+ | RXE_WRITE_MASK | RXE_COMP_MASK | RXE_RWR_MASK
+ | RXE_END_MASK,
+ .length = RXE_BTH_BYTES + RXE_IMMDT_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_IMMDT] = RXE_BTH_BYTES,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES
+ + RXE_IMMDT_BYTES,
+ }
+ },
+ [IB_OPCODE_RC_RDMA_WRITE_ONLY] = {
+ .name = "IB_OPCODE_RC_RDMA_WRITE_ONLY",
+ .mask = RXE_RETH_MASK | RXE_PAYLOAD_MASK | RXE_REQ_MASK
+ | RXE_WRITE_MASK | RXE_START_MASK
+ | RXE_END_MASK,
+ .length = RXE_BTH_BYTES + RXE_RETH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_RETH] = RXE_BTH_BYTES,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES
+ + RXE_RETH_BYTES,
+ }
+ },
+ [IB_OPCODE_RC_RDMA_WRITE_ONLY_WITH_IMMEDIATE] = {
+ .name = "IB_OPCODE_RC_RDMA_WRITE_ONLY_WITH_IMMEDIATE",
+ .mask = RXE_RETH_MASK | RXE_IMMDT_MASK | RXE_PAYLOAD_MASK
+ | RXE_REQ_MASK | RXE_WRITE_MASK
+ | RXE_COMP_MASK | RXE_RWR_MASK
+ | RXE_START_MASK | RXE_END_MASK,
+ .length = RXE_BTH_BYTES + RXE_IMMDT_BYTES + RXE_RETH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_RETH] = RXE_BTH_BYTES,
+ [RXE_IMMDT] = RXE_BTH_BYTES
+ + RXE_RETH_BYTES,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES
+ + RXE_RETH_BYTES
+ + RXE_IMMDT_BYTES,
+ }
+ },
+ [IB_OPCODE_RC_RDMA_READ_REQUEST] = {
+ .name = "IB_OPCODE_RC_RDMA_READ_REQUEST",
+ .mask = RXE_RETH_MASK | RXE_REQ_MASK | RXE_READ_MASK
+ | RXE_START_MASK | RXE_END_MASK,
+ .length = RXE_BTH_BYTES + RXE_RETH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_RETH] = RXE_BTH_BYTES,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES
+ + RXE_RETH_BYTES,
+ }
+ },
+ [IB_OPCODE_RC_RDMA_READ_RESPONSE_FIRST] = {
+ .name = "IB_OPCODE_RC_RDMA_READ_RESPONSE_FIRST",
+ .mask = RXE_AETH_MASK | RXE_PAYLOAD_MASK | RXE_ACK_MASK
+ | RXE_START_MASK,
+ .length = RXE_BTH_BYTES + RXE_AETH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_AETH] = RXE_BTH_BYTES,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES
+ + RXE_AETH_BYTES,
+ }
+ },
+ [IB_OPCODE_RC_RDMA_READ_RESPONSE_MIDDLE] = {
+ .name = "IB_OPCODE_RC_RDMA_READ_RESPONSE_MIDDLE",
+ .mask = RXE_PAYLOAD_MASK | RXE_ACK_MASK | RXE_MIDDLE_MASK,
+ .length = RXE_BTH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES,
+ }
+ },
+ [IB_OPCODE_RC_RDMA_READ_RESPONSE_LAST] = {
+ .name = "IB_OPCODE_RC_RDMA_READ_RESPONSE_LAST",
+ .mask = RXE_AETH_MASK | RXE_PAYLOAD_MASK | RXE_ACK_MASK
+ | RXE_END_MASK,
+ .length = RXE_BTH_BYTES + RXE_AETH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_AETH] = RXE_BTH_BYTES,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES
+ + RXE_AETH_BYTES,
+ }
+ },
+ [IB_OPCODE_RC_RDMA_READ_RESPONSE_ONLY] = {
+ .name = "IB_OPCODE_RC_RDMA_READ_RESPONSE_ONLY",
+ .mask = RXE_AETH_MASK | RXE_PAYLOAD_MASK | RXE_ACK_MASK
+ | RXE_START_MASK | RXE_END_MASK,
+ .length = RXE_BTH_BYTES + RXE_AETH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_AETH] = RXE_BTH_BYTES,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES
+ + RXE_AETH_BYTES,
+ }
+ },
+ [IB_OPCODE_RC_ACKNOWLEDGE] = {
+ .name = "IB_OPCODE_RC_ACKNOWLEDGE",
+ .mask = RXE_AETH_MASK | RXE_ACK_MASK | RXE_START_MASK
+ | RXE_END_MASK,
+ .length = RXE_BTH_BYTES + RXE_AETH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_AETH] = RXE_BTH_BYTES,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES
+ + RXE_AETH_BYTES,
+ }
+ },
+ [IB_OPCODE_RC_ATOMIC_ACKNOWLEDGE] = {
+ .name = "IB_OPCODE_RC_ATOMIC_ACKNOWLEDGE",
+ .mask = RXE_AETH_MASK | RXE_ATMACK_MASK | RXE_ACK_MASK
+ | RXE_START_MASK | RXE_END_MASK,
+ .length = RXE_BTH_BYTES + RXE_ATMACK_BYTES + RXE_AETH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_AETH] = RXE_BTH_BYTES,
+ [RXE_ATMACK] = RXE_BTH_BYTES
+ + RXE_AETH_BYTES,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES
+ + RXE_ATMACK_BYTES + RXE_AETH_BYTES,
+ }
+ },
+ [IB_OPCODE_RC_COMPARE_SWAP] = {
+ .name = "IB_OPCODE_RC_COMPARE_SWAP",
+ .mask = RXE_ATMETH_MASK | RXE_REQ_MASK | RXE_ATOMIC_MASK
+ | RXE_START_MASK | RXE_END_MASK,
+ .length = RXE_BTH_BYTES + RXE_ATMETH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_ATMETH] = RXE_BTH_BYTES,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES
+ + RXE_ATMETH_BYTES,
+ }
+ },
+ [IB_OPCODE_RC_FETCH_ADD] = {
+ .name = "IB_OPCODE_RC_FETCH_ADD",
+ .mask = RXE_ATMETH_MASK | RXE_REQ_MASK | RXE_ATOMIC_MASK
+ | RXE_START_MASK | RXE_END_MASK,
+ .length = RXE_BTH_BYTES + RXE_ATMETH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_ATMETH] = RXE_BTH_BYTES,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES
+ + RXE_ATMETH_BYTES,
+ }
+ },
+ [IB_OPCODE_RC_SEND_LAST_WITH_INVALIDATE] = {
+ .name = "IB_OPCODE_RC_SEND_LAST_WITH_INVALIDATE",
+ .mask = RXE_IETH_MASK | RXE_PAYLOAD_MASK | RXE_REQ_MASK
+ | RXE_COMP_MASK | RXE_SEND_MASK | RXE_END_MASK,
+ .length = RXE_BTH_BYTES + RXE_IETH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_IETH] = RXE_BTH_BYTES,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES
+ + RXE_IETH_BYTES,
+ }
+ },
+ [IB_OPCODE_RC_SEND_ONLY_WITH_INVALIDATE] = {
+ .name = "IB_OPCODE_RC_SEND_ONLY_INV",
+ .mask = RXE_IETH_MASK | RXE_PAYLOAD_MASK | RXE_REQ_MASK
+ | RXE_COMP_MASK | RXE_RWR_MASK | RXE_SEND_MASK
+ | RXE_END_MASK,
+ .length = RXE_BTH_BYTES + RXE_IETH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_IETH] = RXE_BTH_BYTES,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES
+ + RXE_IETH_BYTES,
+ }
+ },
+
+ /* UC */
+ [IB_OPCODE_UC_SEND_FIRST] = {
+ .name = "IB_OPCODE_UC_SEND_FIRST",
+ .mask = RXE_PAYLOAD_MASK | RXE_REQ_MASK | RXE_RWR_MASK
+ | RXE_SEND_MASK | RXE_START_MASK,
+ .length = RXE_BTH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES,
+ }
+ },
+ [IB_OPCODE_UC_SEND_MIDDLE] = {
+ .name = "IB_OPCODE_UC_SEND_MIDDLE",
+ .mask = RXE_PAYLOAD_MASK | RXE_REQ_MASK | RXE_SEND_MASK
+ | RXE_MIDDLE_MASK,
+ .length = RXE_BTH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES,
+ }
+ },
+ [IB_OPCODE_UC_SEND_LAST] = {
+ .name = "IB_OPCODE_UC_SEND_LAST",
+ .mask = RXE_PAYLOAD_MASK | RXE_REQ_MASK | RXE_COMP_MASK
+ | RXE_SEND_MASK | RXE_END_MASK,
+ .length = RXE_BTH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES,
+ }
+ },
+ [IB_OPCODE_UC_SEND_LAST_WITH_IMMEDIATE] = {
+ .name = "IB_OPCODE_UC_SEND_LAST_WITH_IMMEDIATE",
+ .mask = RXE_IMMDT_MASK | RXE_PAYLOAD_MASK | RXE_REQ_MASK
+ | RXE_COMP_MASK | RXE_SEND_MASK | RXE_END_MASK,
+ .length = RXE_BTH_BYTES + RXE_IMMDT_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_IMMDT] = RXE_BTH_BYTES,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES
+ + RXE_IMMDT_BYTES,
+ }
+ },
+ [IB_OPCODE_UC_SEND_ONLY] = {
+ .name = "IB_OPCODE_UC_SEND_ONLY",
+ .mask = RXE_PAYLOAD_MASK | RXE_REQ_MASK | RXE_COMP_MASK
+ | RXE_RWR_MASK | RXE_SEND_MASK
+ | RXE_START_MASK | RXE_END_MASK,
+ .length = RXE_BTH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES,
+ }
+ },
+ [IB_OPCODE_UC_SEND_ONLY_WITH_IMMEDIATE] = {
+ .name = "IB_OPCODE_UC_SEND_ONLY_WITH_IMMEDIATE",
+ .mask = RXE_IMMDT_MASK | RXE_PAYLOAD_MASK | RXE_REQ_MASK
+ | RXE_COMP_MASK | RXE_RWR_MASK | RXE_SEND_MASK
+ | RXE_START_MASK | RXE_END_MASK,
+ .length = RXE_BTH_BYTES + RXE_IMMDT_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_IMMDT] = RXE_BTH_BYTES,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES
+ + RXE_IMMDT_BYTES,
+ }
+ },
+ [IB_OPCODE_UC_RDMA_WRITE_FIRST] = {
+ .name = "IB_OPCODE_UC_RDMA_WRITE_FIRST",
+ .mask = RXE_RETH_MASK | RXE_PAYLOAD_MASK | RXE_REQ_MASK
+ | RXE_WRITE_MASK | RXE_START_MASK,
+ .length = RXE_BTH_BYTES + RXE_RETH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_RETH] = RXE_BTH_BYTES,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES
+ + RXE_RETH_BYTES,
+ }
+ },
+ [IB_OPCODE_UC_RDMA_WRITE_MIDDLE] = {
+ .name = "IB_OPCODE_UC_RDMA_WRITE_MIDDLE",
+ .mask = RXE_PAYLOAD_MASK | RXE_REQ_MASK | RXE_WRITE_MASK
+ | RXE_MIDDLE_MASK,
+ .length = RXE_BTH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES,
+ }
+ },
+ [IB_OPCODE_UC_RDMA_WRITE_LAST] = {
+ .name = "IB_OPCODE_UC_RDMA_WRITE_LAST",
+ .mask = RXE_PAYLOAD_MASK | RXE_REQ_MASK | RXE_WRITE_MASK
+ | RXE_END_MASK,
+ .length = RXE_BTH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES,
+ }
+ },
+ [IB_OPCODE_UC_RDMA_WRITE_LAST_WITH_IMMEDIATE] = {
+ .name = "IB_OPCODE_UC_RDMA_WRITE_LAST_WITH_IMMEDIATE",
+ .mask = RXE_IMMDT_MASK | RXE_PAYLOAD_MASK | RXE_REQ_MASK
+ | RXE_WRITE_MASK | RXE_COMP_MASK | RXE_RWR_MASK
+ | RXE_END_MASK,
+ .length = RXE_BTH_BYTES + RXE_IMMDT_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_IMMDT] = RXE_BTH_BYTES,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES
+ + RXE_IMMDT_BYTES,
+ }
+ },
+ [IB_OPCODE_UC_RDMA_WRITE_ONLY] = {
+ .name = "IB_OPCODE_UC_RDMA_WRITE_ONLY",
+ .mask = RXE_RETH_MASK | RXE_PAYLOAD_MASK | RXE_REQ_MASK
+ | RXE_WRITE_MASK | RXE_START_MASK
+ | RXE_END_MASK,
+ .length = RXE_BTH_BYTES + RXE_RETH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_RETH] = RXE_BTH_BYTES,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES
+ + RXE_RETH_BYTES,
+ }
+ },
+ [IB_OPCODE_UC_RDMA_WRITE_ONLY_WITH_IMMEDIATE] = {
+ .name = "IB_OPCODE_UC_RDMA_WRITE_ONLY_WITH_IMMEDIATE",
+ .mask = RXE_RETH_MASK | RXE_IMMDT_MASK | RXE_PAYLOAD_MASK
+ | RXE_REQ_MASK | RXE_WRITE_MASK
+ | RXE_COMP_MASK | RXE_RWR_MASK
+ | RXE_START_MASK | RXE_END_MASK,
+ .length = RXE_BTH_BYTES + RXE_IMMDT_BYTES + RXE_RETH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_RETH] = RXE_BTH_BYTES,
+ [RXE_IMMDT] = RXE_BTH_BYTES
+ + RXE_RETH_BYTES,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES
+ + RXE_RETH_BYTES
+ + RXE_IMMDT_BYTES,
+ }
+ },
+
+ /* RD */
+ [IB_OPCODE_RD_SEND_FIRST] = {
+ .name = "IB_OPCODE_RD_SEND_FIRST",
+ .mask = RXE_RDETH_MASK | RXE_DETH_MASK | RXE_PAYLOAD_MASK
+ | RXE_REQ_MASK | RXE_RWR_MASK | RXE_SEND_MASK
+ | RXE_START_MASK,
+ .length = RXE_BTH_BYTES + RXE_DETH_BYTES + RXE_RDETH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_RDETH] = RXE_BTH_BYTES,
+ [RXE_DETH] = RXE_BTH_BYTES
+ + RXE_RDETH_BYTES,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES
+ + RXE_RDETH_BYTES
+ + RXE_DETH_BYTES,
+ }
+ },
+ [IB_OPCODE_RD_SEND_MIDDLE] = {
+ .name = "IB_OPCODE_RD_SEND_MIDDLE",
+ .mask = RXE_RDETH_MASK | RXE_DETH_MASK | RXE_PAYLOAD_MASK
+ | RXE_REQ_MASK | RXE_SEND_MASK
+ | RXE_MIDDLE_MASK,
+ .length = RXE_BTH_BYTES + RXE_DETH_BYTES + RXE_RDETH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_RDETH] = RXE_BTH_BYTES,
+ [RXE_DETH] = RXE_BTH_BYTES
+ + RXE_RDETH_BYTES,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES
+ + RXE_RDETH_BYTES
+ + RXE_DETH_BYTES,
+ }
+ },
+ [IB_OPCODE_RD_SEND_LAST] = {
+ .name = "IB_OPCODE_RD_SEND_LAST",
+ .mask = RXE_RDETH_MASK | RXE_DETH_MASK | RXE_PAYLOAD_MASK
+ | RXE_REQ_MASK | RXE_COMP_MASK | RXE_SEND_MASK
+ | RXE_END_MASK,
+ .length = RXE_BTH_BYTES + RXE_DETH_BYTES + RXE_RDETH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_RDETH] = RXE_BTH_BYTES,
+ [RXE_DETH] = RXE_BTH_BYTES
+ + RXE_RDETH_BYTES,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES
+ + RXE_RDETH_BYTES
+ + RXE_DETH_BYTES,
+ }
+ },
+ [IB_OPCODE_RD_SEND_LAST_WITH_IMMEDIATE] = {
+ .name = "IB_OPCODE_RD_SEND_LAST_WITH_IMMEDIATE",
+ .mask = RXE_RDETH_MASK | RXE_DETH_MASK | RXE_IMMDT_MASK
+ | RXE_PAYLOAD_MASK | RXE_REQ_MASK
+ | RXE_COMP_MASK | RXE_SEND_MASK
+ | RXE_END_MASK,
+ .length = RXE_BTH_BYTES + RXE_IMMDT_BYTES + RXE_DETH_BYTES
+ + RXE_RDETH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_RDETH] = RXE_BTH_BYTES,
+ [RXE_DETH] = RXE_BTH_BYTES
+ + RXE_RDETH_BYTES,
+ [RXE_IMMDT] = RXE_BTH_BYTES
+ + RXE_RDETH_BYTES
+ + RXE_DETH_BYTES,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES
+ + RXE_RDETH_BYTES
+ + RXE_DETH_BYTES
+ + RXE_IMMDT_BYTES,
+ }
+ },
+ [IB_OPCODE_RD_SEND_ONLY] = {
+ .name = "IB_OPCODE_RD_SEND_ONLY",
+ .mask = RXE_RDETH_MASK | RXE_DETH_MASK | RXE_PAYLOAD_MASK
+ | RXE_REQ_MASK | RXE_COMP_MASK | RXE_RWR_MASK
+ | RXE_SEND_MASK | RXE_START_MASK | RXE_END_MASK,
+ .length = RXE_BTH_BYTES + RXE_DETH_BYTES + RXE_RDETH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_RDETH] = RXE_BTH_BYTES,
+ [RXE_DETH] = RXE_BTH_BYTES
+ + RXE_RDETH_BYTES,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES
+ + RXE_RDETH_BYTES
+ + RXE_DETH_BYTES,
+ }
+ },
+ [IB_OPCODE_RD_SEND_ONLY_WITH_IMMEDIATE] = {
+ .name = "IB_OPCODE_RD_SEND_ONLY_WITH_IMMEDIATE",
+ .mask = RXE_RDETH_MASK | RXE_DETH_MASK | RXE_IMMDT_MASK
+ | RXE_PAYLOAD_MASK | RXE_REQ_MASK
+ | RXE_COMP_MASK | RXE_RWR_MASK | RXE_SEND_MASK
+ | RXE_START_MASK | RXE_END_MASK,
+ .length = RXE_BTH_BYTES + RXE_IMMDT_BYTES + RXE_DETH_BYTES
+ + RXE_RDETH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_RDETH] = RXE_BTH_BYTES,
+ [RXE_DETH] = RXE_BTH_BYTES
+ + RXE_RDETH_BYTES,
+ [RXE_IMMDT] = RXE_BTH_BYTES
+ + RXE_RDETH_BYTES
+ + RXE_DETH_BYTES,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES
+ + RXE_RDETH_BYTES
+ + RXE_DETH_BYTES
+ + RXE_IMMDT_BYTES,
+ }
+ },
+ [IB_OPCODE_RD_RDMA_WRITE_FIRST] = {
+ .name = "IB_OPCODE_RD_RDMA_WRITE_FIRST",
+ .mask = RXE_RDETH_MASK | RXE_DETH_MASK | RXE_RETH_MASK
+ | RXE_PAYLOAD_MASK | RXE_REQ_MASK
+ | RXE_WRITE_MASK | RXE_START_MASK,
+ .length = RXE_BTH_BYTES + RXE_RETH_BYTES + RXE_DETH_BYTES
+ + RXE_RDETH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_RDETH] = RXE_BTH_BYTES,
+ [RXE_DETH] = RXE_BTH_BYTES
+ + RXE_RDETH_BYTES,
+ [RXE_RETH] = RXE_BTH_BYTES
+ + RXE_RDETH_BYTES
+ + RXE_DETH_BYTES,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES
+ + RXE_RDETH_BYTES
+ + RXE_DETH_BYTES
+ + RXE_RETH_BYTES,
+ }
+ },
+ [IB_OPCODE_RD_RDMA_WRITE_MIDDLE] = {
+ .name = "IB_OPCODE_RD_RDMA_WRITE_MIDDLE",
+ .mask = RXE_RDETH_MASK | RXE_DETH_MASK | RXE_PAYLOAD_MASK
+ | RXE_REQ_MASK | RXE_WRITE_MASK
+ | RXE_MIDDLE_MASK,
+ .length = RXE_BTH_BYTES + RXE_DETH_BYTES + RXE_RDETH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_RDETH] = RXE_BTH_BYTES,
+ [RXE_DETH] = RXE_BTH_BYTES
+ + RXE_RDETH_BYTES,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES
+ + RXE_RDETH_BYTES
+ + RXE_DETH_BYTES,
+ }
+ },
+ [IB_OPCODE_RD_RDMA_WRITE_LAST] = {
+ .name = "IB_OPCODE_RD_RDMA_WRITE_LAST",
+ .mask = RXE_RDETH_MASK | RXE_DETH_MASK | RXE_PAYLOAD_MASK
+ | RXE_REQ_MASK | RXE_WRITE_MASK
+ | RXE_END_MASK,
+ .length = RXE_BTH_BYTES + RXE_DETH_BYTES + RXE_RDETH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_RDETH] = RXE_BTH_BYTES,
+ [RXE_DETH] = RXE_BTH_BYTES
+ + RXE_RDETH_BYTES,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES
+ + RXE_RDETH_BYTES
+ + RXE_DETH_BYTES,
+ }
+ },
+ [IB_OPCODE_RD_RDMA_WRITE_LAST_WITH_IMMEDIATE] = {
+ .name = "IB_OPCODE_RD_RDMA_WRITE_LAST_WITH_IMMEDIATE",
+ .mask = RXE_RDETH_MASK | RXE_DETH_MASK | RXE_IMMDT_MASK
+ | RXE_PAYLOAD_MASK | RXE_REQ_MASK
+ | RXE_WRITE_MASK | RXE_COMP_MASK | RXE_RWR_MASK
+ | RXE_END_MASK,
+ .length = RXE_BTH_BYTES + RXE_IMMDT_BYTES + RXE_DETH_BYTES
+ + RXE_RDETH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_RDETH] = RXE_BTH_BYTES,
+ [RXE_DETH] = RXE_BTH_BYTES
+ + RXE_RDETH_BYTES,
+ [RXE_IMMDT] = RXE_BTH_BYTES
+ + RXE_RDETH_BYTES
+ + RXE_DETH_BYTES,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES
+ + RXE_RDETH_BYTES
+ + RXE_DETH_BYTES
+ + RXE_IMMDT_BYTES,
+ }
+ },
+ [IB_OPCODE_RD_RDMA_WRITE_ONLY] = {
+ .name = "IB_OPCODE_RD_RDMA_WRITE_ONLY",
+ .mask = RXE_RDETH_MASK | RXE_DETH_MASK | RXE_RETH_MASK
+ | RXE_PAYLOAD_MASK | RXE_REQ_MASK
+ | RXE_WRITE_MASK | RXE_START_MASK
+ | RXE_END_MASK,
+ .length = RXE_BTH_BYTES + RXE_RETH_BYTES + RXE_DETH_BYTES
+ + RXE_RDETH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_RDETH] = RXE_BTH_BYTES,
+ [RXE_DETH] = RXE_BTH_BYTES
+ + RXE_RDETH_BYTES,
+ [RXE_RETH] = RXE_BTH_BYTES
+ + RXE_RDETH_BYTES
+ + RXE_DETH_BYTES,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES
+ + RXE_RDETH_BYTES
+ + RXE_DETH_BYTES
+ + RXE_RETH_BYTES,
+ }
+ },
+ [IB_OPCODE_RD_RDMA_WRITE_ONLY_WITH_IMMEDIATE] = {
+ .name = "IB_OPCODE_RD_RDMA_WRITE_ONLY_WITH_IMMEDIATE",
+ .mask = RXE_RDETH_MASK | RXE_DETH_MASK | RXE_RETH_MASK
+ | RXE_IMMDT_MASK | RXE_PAYLOAD_MASK
+ | RXE_REQ_MASK | RXE_WRITE_MASK
+ | RXE_COMP_MASK | RXE_RWR_MASK
+ | RXE_START_MASK | RXE_END_MASK,
+ .length = RXE_BTH_BYTES + RXE_IMMDT_BYTES + RXE_RETH_BYTES
+ + RXE_DETH_BYTES + RXE_RDETH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_RDETH] = RXE_BTH_BYTES,
+ [RXE_DETH] = RXE_BTH_BYTES
+ + RXE_RDETH_BYTES,
+ [RXE_RETH] = RXE_BTH_BYTES
+ + RXE_RDETH_BYTES
+ + RXE_DETH_BYTES,
+ [RXE_IMMDT] = RXE_BTH_BYTES
+ + RXE_RDETH_BYTES
+ + RXE_DETH_BYTES
+ + RXE_RETH_BYTES,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES
+ + RXE_RDETH_BYTES
+ + RXE_DETH_BYTES
+ + RXE_RETH_BYTES
+ + RXE_IMMDT_BYTES,
+ }
+ },
+ [IB_OPCODE_RD_RDMA_READ_REQUEST] = {
+ .name = "IB_OPCODE_RD_RDMA_READ_REQUEST",
+ .mask = RXE_RDETH_MASK | RXE_DETH_MASK | RXE_RETH_MASK
+ | RXE_REQ_MASK | RXE_READ_MASK
+ | RXE_START_MASK | RXE_END_MASK,
+ .length = RXE_BTH_BYTES + RXE_RETH_BYTES + RXE_DETH_BYTES
+ + RXE_RDETH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_RDETH] = RXE_BTH_BYTES,
+ [RXE_DETH] = RXE_BTH_BYTES
+ + RXE_RDETH_BYTES,
+ [RXE_RETH] = RXE_BTH_BYTES
+ + RXE_RDETH_BYTES
+ + RXE_DETH_BYTES,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES
+ + RXE_RETH_BYTES
+ + RXE_DETH_BYTES
+ + RXE_RDETH_BYTES,
+ }
+ },
+ [IB_OPCODE_RD_RDMA_READ_RESPONSE_FIRST] = {
+ .name = "IB_OPCODE_RD_RDMA_READ_RESPONSE_FIRST",
+ .mask = RXE_RDETH_MASK | RXE_AETH_MASK
+ | RXE_PAYLOAD_MASK | RXE_ACK_MASK
+ | RXE_START_MASK,
+ .length = RXE_BTH_BYTES + RXE_AETH_BYTES + RXE_RDETH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_RDETH] = RXE_BTH_BYTES,
+ [RXE_AETH] = RXE_BTH_BYTES
+ + RXE_RDETH_BYTES,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES
+ + RXE_RDETH_BYTES
+ + RXE_AETH_BYTES,
+ }
+ },
+ [IB_OPCODE_RD_RDMA_READ_RESPONSE_MIDDLE] = {
+ .name = "IB_OPCODE_RD_RDMA_READ_RESPONSE_MIDDLE",
+ .mask = RXE_RDETH_MASK | RXE_PAYLOAD_MASK | RXE_ACK_MASK
+ | RXE_MIDDLE_MASK,
+ .length = RXE_BTH_BYTES + RXE_RDETH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_RDETH] = RXE_BTH_BYTES,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES
+ + RXE_RDETH_BYTES,
+ }
+ },
+ [IB_OPCODE_RD_RDMA_READ_RESPONSE_LAST] = {
+ .name = "IB_OPCODE_RD_RDMA_READ_RESPONSE_LAST",
+ .mask = RXE_RDETH_MASK | RXE_AETH_MASK | RXE_PAYLOAD_MASK
+ | RXE_ACK_MASK | RXE_END_MASK,
+ .length = RXE_BTH_BYTES + RXE_AETH_BYTES + RXE_RDETH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_RDETH] = RXE_BTH_BYTES,
+ [RXE_AETH] = RXE_BTH_BYTES
+ + RXE_RDETH_BYTES,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES
+ + RXE_RDETH_BYTES
+ + RXE_AETH_BYTES,
+ }
+ },
+ [IB_OPCODE_RD_RDMA_READ_RESPONSE_ONLY] = {
+ .name = "IB_OPCODE_RD_RDMA_READ_RESPONSE_ONLY",
+ .mask = RXE_RDETH_MASK | RXE_AETH_MASK | RXE_PAYLOAD_MASK
+ | RXE_ACK_MASK | RXE_START_MASK | RXE_END_MASK,
+ .length = RXE_BTH_BYTES + RXE_AETH_BYTES + RXE_RDETH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_RDETH] = RXE_BTH_BYTES,
+ [RXE_AETH] = RXE_BTH_BYTES
+ + RXE_RDETH_BYTES,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES
+ + RXE_RDETH_BYTES
+ + RXE_AETH_BYTES,
+ }
+ },
+ [IB_OPCODE_RD_ACKNOWLEDGE] = {
+ .name = "IB_OPCODE_RD_ACKNOWLEDGE",
+ .mask = RXE_RDETH_MASK | RXE_AETH_MASK | RXE_ACK_MASK
+ | RXE_START_MASK | RXE_END_MASK,
+ .length = RXE_BTH_BYTES + RXE_AETH_BYTES + RXE_RDETH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_RDETH] = RXE_BTH_BYTES,
+ [RXE_AETH] = RXE_BTH_BYTES
+ + RXE_RDETH_BYTES,
+ }
+ },
+ [IB_OPCODE_RD_ATOMIC_ACKNOWLEDGE] = {
+ .name = "IB_OPCODE_RD_ATOMIC_ACKNOWLEDGE",
+ .mask = RXE_RDETH_MASK | RXE_AETH_MASK | RXE_ATMACK_MASK
+ | RXE_ACK_MASK | RXE_START_MASK | RXE_END_MASK,
+ .length = RXE_BTH_BYTES + RXE_ATMACK_BYTES + RXE_AETH_BYTES
+ + RXE_RDETH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_RDETH] = RXE_BTH_BYTES,
+ [RXE_AETH] = RXE_BTH_BYTES
+ + RXE_RDETH_BYTES,
+ [RXE_ATMACK] = RXE_BTH_BYTES
+ + RXE_RDETH_BYTES
+ + RXE_AETH_BYTES,
+ }
+ },
+ [IB_OPCODE_RD_COMPARE_SWAP] = {
+ .name = "RD_COMPARE_SWAP",
+ .mask = RXE_RDETH_MASK | RXE_DETH_MASK | RXE_ATMETH_MASK
+ | RXE_REQ_MASK | RXE_ATOMIC_MASK
+ | RXE_START_MASK | RXE_END_MASK,
+ .length = RXE_BTH_BYTES + RXE_ATMETH_BYTES + RXE_DETH_BYTES
+ + RXE_RDETH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_RDETH] = RXE_BTH_BYTES,
+ [RXE_DETH] = RXE_BTH_BYTES
+ + RXE_RDETH_BYTES,
+ [RXE_ATMETH] = RXE_BTH_BYTES
+ + RXE_RDETH_BYTES
+ + RXE_DETH_BYTES,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES +
+ + RXE_ATMETH_BYTES
+ + RXE_DETH_BYTES +
+ + RXE_RDETH_BYTES,
+ }
+ },
+ [IB_OPCODE_RD_FETCH_ADD] = {
+ .name = "IB_OPCODE_RD_FETCH_ADD",
+ .mask = RXE_RDETH_MASK | RXE_DETH_MASK | RXE_ATMETH_MASK
+ | RXE_REQ_MASK | RXE_ATOMIC_MASK
+ | RXE_START_MASK | RXE_END_MASK,
+ .length = RXE_BTH_BYTES + RXE_ATMETH_BYTES + RXE_DETH_BYTES
+ + RXE_RDETH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_RDETH] = RXE_BTH_BYTES,
+ [RXE_DETH] = RXE_BTH_BYTES
+ + RXE_RDETH_BYTES,
+ [RXE_ATMETH] = RXE_BTH_BYTES
+ + RXE_RDETH_BYTES
+ + RXE_DETH_BYTES,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES +
+ + RXE_ATMETH_BYTES
+ + RXE_DETH_BYTES +
+ + RXE_RDETH_BYTES,
+ }
+ },
+
+ /* UD */
+ [IB_OPCODE_UD_SEND_ONLY] = {
+ .name = "IB_OPCODE_UD_SEND_ONLY",
+ .mask = RXE_DETH_MASK | RXE_PAYLOAD_MASK | RXE_REQ_MASK
+ | RXE_COMP_MASK | RXE_RWR_MASK | RXE_SEND_MASK
+ | RXE_START_MASK | RXE_END_MASK,
+ .length = RXE_BTH_BYTES + RXE_DETH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_DETH] = RXE_BTH_BYTES,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES
+ + RXE_DETH_BYTES,
+ }
+ },
+ [IB_OPCODE_UD_SEND_ONLY_WITH_IMMEDIATE] = {
+ .name = "IB_OPCODE_UD_SEND_ONLY_WITH_IMMEDIATE",
+ .mask = RXE_DETH_MASK | RXE_IMMDT_MASK | RXE_PAYLOAD_MASK
+ | RXE_REQ_MASK | RXE_COMP_MASK | RXE_RWR_MASK
+ | RXE_SEND_MASK | RXE_START_MASK | RXE_END_MASK,
+ .length = RXE_BTH_BYTES + RXE_IMMDT_BYTES + RXE_DETH_BYTES,
+ .offset = {
+ [RXE_BTH] = 0,
+ [RXE_DETH] = RXE_BTH_BYTES,
+ [RXE_IMMDT] = RXE_BTH_BYTES
+ + RXE_DETH_BYTES,
+ [RXE_PAYLOAD] = RXE_BTH_BYTES
+ + RXE_DETH_BYTES
+ + RXE_IMMDT_BYTES,
+ }
+ },
+
+};
diff --git a/drivers/infiniband/sw/rxe/rxe_opcode.h b/drivers/infiniband/sw/rxe/rxe_opcode.h
new file mode 100644
index 000000000000..307604e9c78d
--- /dev/null
+++ b/drivers/infiniband/sw/rxe/rxe_opcode.h
@@ -0,0 +1,129 @@
+/*
+ * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
+ * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef RXE_OPCODE_H
+#define RXE_OPCODE_H
+
+/*
+ * contains header bit mask definitions and header lengths
+ * declaration of the rxe_opcode_info struct and
+ * rxe_wr_opcode_info struct
+ */
+
+enum rxe_wr_mask {
+ WR_INLINE_MASK = BIT(0),
+ WR_ATOMIC_MASK = BIT(1),
+ WR_SEND_MASK = BIT(2),
+ WR_READ_MASK = BIT(3),
+ WR_WRITE_MASK = BIT(4),
+ WR_LOCAL_MASK = BIT(5),
+ WR_REG_MASK = BIT(6),
+
+ WR_READ_OR_WRITE_MASK = WR_READ_MASK | WR_WRITE_MASK,
+ WR_READ_WRITE_OR_SEND_MASK = WR_READ_OR_WRITE_MASK | WR_SEND_MASK,
+ WR_WRITE_OR_SEND_MASK = WR_WRITE_MASK | WR_SEND_MASK,
+ WR_ATOMIC_OR_READ_MASK = WR_ATOMIC_MASK | WR_READ_MASK,
+};
+
+#define WR_MAX_QPT (8)
+
+struct rxe_wr_opcode_info {
+ char *name;
+ enum rxe_wr_mask mask[WR_MAX_QPT];
+};
+
+extern struct rxe_wr_opcode_info rxe_wr_opcode_info[];
+
+enum rxe_hdr_type {
+ RXE_LRH,
+ RXE_GRH,
+ RXE_BTH,
+ RXE_RETH,
+ RXE_AETH,
+ RXE_ATMETH,
+ RXE_ATMACK,
+ RXE_IETH,
+ RXE_RDETH,
+ RXE_DETH,
+ RXE_IMMDT,
+ RXE_PAYLOAD,
+ NUM_HDR_TYPES
+};
+
+enum rxe_hdr_mask {
+ RXE_LRH_MASK = BIT(RXE_LRH),
+ RXE_GRH_MASK = BIT(RXE_GRH),
+ RXE_BTH_MASK = BIT(RXE_BTH),
+ RXE_IMMDT_MASK = BIT(RXE_IMMDT),
+ RXE_RETH_MASK = BIT(RXE_RETH),
+ RXE_AETH_MASK = BIT(RXE_AETH),
+ RXE_ATMETH_MASK = BIT(RXE_ATMETH),
+ RXE_ATMACK_MASK = BIT(RXE_ATMACK),
+ RXE_IETH_MASK = BIT(RXE_IETH),
+ RXE_RDETH_MASK = BIT(RXE_RDETH),
+ RXE_DETH_MASK = BIT(RXE_DETH),
+ RXE_PAYLOAD_MASK = BIT(RXE_PAYLOAD),
+
+ RXE_REQ_MASK = BIT(NUM_HDR_TYPES + 0),
+ RXE_ACK_MASK = BIT(NUM_HDR_TYPES + 1),
+ RXE_SEND_MASK = BIT(NUM_HDR_TYPES + 2),
+ RXE_WRITE_MASK = BIT(NUM_HDR_TYPES + 3),
+ RXE_READ_MASK = BIT(NUM_HDR_TYPES + 4),
+ RXE_ATOMIC_MASK = BIT(NUM_HDR_TYPES + 5),
+
+ RXE_RWR_MASK = BIT(NUM_HDR_TYPES + 6),
+ RXE_COMP_MASK = BIT(NUM_HDR_TYPES + 7),
+
+ RXE_START_MASK = BIT(NUM_HDR_TYPES + 8),
+ RXE_MIDDLE_MASK = BIT(NUM_HDR_TYPES + 9),
+ RXE_END_MASK = BIT(NUM_HDR_TYPES + 10),
+
+ RXE_LOOPBACK_MASK = BIT(NUM_HDR_TYPES + 12),
+
+ RXE_READ_OR_ATOMIC = (RXE_READ_MASK | RXE_ATOMIC_MASK),
+ RXE_WRITE_OR_SEND = (RXE_WRITE_MASK | RXE_SEND_MASK),
+};
+
+#define OPCODE_NONE (-1)
+#define RXE_NUM_OPCODE 256
+
+struct rxe_opcode_info {
+ char *name;
+ enum rxe_hdr_mask mask;
+ int length;
+ int offset[NUM_HDR_TYPES];
+};
+
+extern struct rxe_opcode_info rxe_opcode[RXE_NUM_OPCODE];
+
+#endif /* RXE_OPCODE_H */
diff --git a/drivers/infiniband/sw/rxe/rxe_param.h b/drivers/infiniband/sw/rxe/rxe_param.h
new file mode 100644
index 000000000000..f459c43a77c8
--- /dev/null
+++ b/drivers/infiniband/sw/rxe/rxe_param.h
@@ -0,0 +1,172 @@
+/*
+ * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
+ * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef RXE_PARAM_H
+#define RXE_PARAM_H
+
+static inline enum ib_mtu rxe_mtu_int_to_enum(int mtu)
+{
+ if (mtu < 256)
+ return 0;
+ else if (mtu < 512)
+ return IB_MTU_256;
+ else if (mtu < 1024)
+ return IB_MTU_512;
+ else if (mtu < 2048)
+ return IB_MTU_1024;
+ else if (mtu < 4096)
+ return IB_MTU_2048;
+ else
+ return IB_MTU_4096;
+}
+
+/* Find the IB mtu for a given network MTU. */
+static inline enum ib_mtu eth_mtu_int_to_enum(int mtu)
+{
+ mtu -= RXE_MAX_HDR_LENGTH;
+
+ return rxe_mtu_int_to_enum(mtu);
+}
+
+/* default/initial rxe device parameter settings */
+enum rxe_device_param {
+ RXE_FW_VER = 0,
+ RXE_MAX_MR_SIZE = -1ull,
+ RXE_PAGE_SIZE_CAP = 0xfffff000,
+ RXE_VENDOR_ID = 0,
+ RXE_VENDOR_PART_ID = 0,
+ RXE_HW_VER = 0,
+ RXE_MAX_QP = 0x10000,
+ RXE_MAX_QP_WR = 0x4000,
+ RXE_MAX_INLINE_DATA = 400,
+ RXE_DEVICE_CAP_FLAGS = IB_DEVICE_BAD_PKEY_CNTR
+ | IB_DEVICE_BAD_QKEY_CNTR
+ | IB_DEVICE_AUTO_PATH_MIG
+ | IB_DEVICE_CHANGE_PHY_PORT
+ | IB_DEVICE_UD_AV_PORT_ENFORCE
+ | IB_DEVICE_PORT_ACTIVE_EVENT
+ | IB_DEVICE_SYS_IMAGE_GUID
+ | IB_DEVICE_RC_RNR_NAK_GEN
+ | IB_DEVICE_SRQ_RESIZE
+ | IB_DEVICE_MEM_MGT_EXTENSIONS,
+ RXE_MAX_SGE = 32,
+ RXE_MAX_SGE_RD = 32,
+ RXE_MAX_CQ = 16384,
+ RXE_MAX_LOG_CQE = 13,
+ RXE_MAX_MR = 2 * 1024,
+ RXE_MAX_PD = 0x7ffc,
+ RXE_MAX_QP_RD_ATOM = 128,
+ RXE_MAX_EE_RD_ATOM = 0,
+ RXE_MAX_RES_RD_ATOM = 0x3f000,
+ RXE_MAX_QP_INIT_RD_ATOM = 128,
+ RXE_MAX_EE_INIT_RD_ATOM = 0,
+ RXE_ATOMIC_CAP = 1,
+ RXE_MAX_EE = 0,
+ RXE_MAX_RDD = 0,
+ RXE_MAX_MW = 0,
+ RXE_MAX_RAW_IPV6_QP = 0,
+ RXE_MAX_RAW_ETHY_QP = 0,
+ RXE_MAX_MCAST_GRP = 8192,
+ RXE_MAX_MCAST_QP_ATTACH = 56,
+ RXE_MAX_TOT_MCAST_QP_ATTACH = 0x70000,
+ RXE_MAX_AH = 100,
+ RXE_MAX_FMR = 0,
+ RXE_MAX_MAP_PER_FMR = 0,
+ RXE_MAX_SRQ = 960,
+ RXE_MAX_SRQ_WR = 0x4000,
+ RXE_MIN_SRQ_WR = 1,
+ RXE_MAX_SRQ_SGE = 27,
+ RXE_MIN_SRQ_SGE = 1,
+ RXE_MAX_FMR_PAGE_LIST_LEN = 512,
+ RXE_MAX_PKEYS = 64,
+ RXE_LOCAL_CA_ACK_DELAY = 15,
+
+ RXE_MAX_UCONTEXT = 512,
+
+ RXE_NUM_PORT = 1,
+ RXE_NUM_COMP_VECTORS = 1,
+
+ RXE_MIN_QP_INDEX = 16,
+ RXE_MAX_QP_INDEX = 0x00020000,
+
+ RXE_MIN_SRQ_INDEX = 0x00020001,
+ RXE_MAX_SRQ_INDEX = 0x00040000,
+
+ RXE_MIN_MR_INDEX = 0x00000001,
+ RXE_MAX_MR_INDEX = 0x00040000,
+ RXE_MIN_MW_INDEX = 0x00040001,
+ RXE_MAX_MW_INDEX = 0x00060000,
+ RXE_MAX_PKT_PER_ACK = 64,
+
+ RXE_MAX_UNACKED_PSNS = 128,
+
+ /* Max inflight SKBs per queue pair */
+ RXE_INFLIGHT_SKBS_PER_QP_HIGH = 64,
+ RXE_INFLIGHT_SKBS_PER_QP_LOW = 16,
+
+ /* Delay before calling arbiter timer */
+ RXE_NSEC_ARB_TIMER_DELAY = 200,
+};
+
+/* default/initial rxe port parameters */
+enum rxe_port_param {
+ RXE_PORT_STATE = IB_PORT_DOWN,
+ RXE_PORT_MAX_MTU = IB_MTU_4096,
+ RXE_PORT_ACTIVE_MTU = IB_MTU_256,
+ RXE_PORT_GID_TBL_LEN = 1024,
+ RXE_PORT_PORT_CAP_FLAGS = RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP,
+ RXE_PORT_MAX_MSG_SZ = 0x800000,
+ RXE_PORT_BAD_PKEY_CNTR = 0,
+ RXE_PORT_QKEY_VIOL_CNTR = 0,
+ RXE_PORT_LID = 0,
+ RXE_PORT_SM_LID = 0,
+ RXE_PORT_SM_SL = 0,
+ RXE_PORT_LMC = 0,
+ RXE_PORT_MAX_VL_NUM = 1,
+ RXE_PORT_SUBNET_TIMEOUT = 0,
+ RXE_PORT_INIT_TYPE_REPLY = 0,
+ RXE_PORT_ACTIVE_WIDTH = IB_WIDTH_1X,
+ RXE_PORT_ACTIVE_SPEED = 1,
+ RXE_PORT_PKEY_TBL_LEN = 64,
+ RXE_PORT_PHYS_STATE = 2,
+ RXE_PORT_SUBNET_PREFIX = 0xfe80000000000000ULL,
+};
+
+/* default/initial port info parameters */
+enum rxe_port_info_param {
+ RXE_PORT_INFO_VL_CAP = 4, /* 1-8 */
+ RXE_PORT_INFO_MTU_CAP = 5, /* 4096 */
+ RXE_PORT_INFO_OPER_VL = 1, /* 1 */
+};
+
+#endif /* RXE_PARAM_H */
diff --git a/drivers/infiniband/sw/rxe/rxe_pool.c b/drivers/infiniband/sw/rxe/rxe_pool.c
new file mode 100644
index 000000000000..6bac0717c540
--- /dev/null
+++ b/drivers/infiniband/sw/rxe/rxe_pool.c
@@ -0,0 +1,502 @@
+/*
+ * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
+ * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include "rxe.h"
+#include "rxe_loc.h"
+
+/* info about object pools
+ * note that mr and mw share a single index space
+ * so that one can map an lkey to the correct type of object
+ */
+struct rxe_type_info rxe_type_info[RXE_NUM_TYPES] = {
+ [RXE_TYPE_UC] = {
+ .name = "rxe-uc",
+ .size = sizeof(struct rxe_ucontext),
+ },
+ [RXE_TYPE_PD] = {
+ .name = "rxe-pd",
+ .size = sizeof(struct rxe_pd),
+ },
+ [RXE_TYPE_AH] = {
+ .name = "rxe-ah",
+ .size = sizeof(struct rxe_ah),
+ .flags = RXE_POOL_ATOMIC,
+ },
+ [RXE_TYPE_SRQ] = {
+ .name = "rxe-srq",
+ .size = sizeof(struct rxe_srq),
+ .flags = RXE_POOL_INDEX,
+ .min_index = RXE_MIN_SRQ_INDEX,
+ .max_index = RXE_MAX_SRQ_INDEX,
+ },
+ [RXE_TYPE_QP] = {
+ .name = "rxe-qp",
+ .size = sizeof(struct rxe_qp),
+ .cleanup = rxe_qp_cleanup,
+ .flags = RXE_POOL_INDEX,
+ .min_index = RXE_MIN_QP_INDEX,
+ .max_index = RXE_MAX_QP_INDEX,
+ },
+ [RXE_TYPE_CQ] = {
+ .name = "rxe-cq",
+ .size = sizeof(struct rxe_cq),
+ .cleanup = rxe_cq_cleanup,
+ },
+ [RXE_TYPE_MR] = {
+ .name = "rxe-mr",
+ .size = sizeof(struct rxe_mem),
+ .cleanup = rxe_mem_cleanup,
+ .flags = RXE_POOL_INDEX,
+ .max_index = RXE_MAX_MR_INDEX,
+ .min_index = RXE_MIN_MR_INDEX,
+ },
+ [RXE_TYPE_MW] = {
+ .name = "rxe-mw",
+ .size = sizeof(struct rxe_mem),
+ .flags = RXE_POOL_INDEX,
+ .max_index = RXE_MAX_MW_INDEX,
+ .min_index = RXE_MIN_MW_INDEX,
+ },
+ [RXE_TYPE_MC_GRP] = {
+ .name = "rxe-mc_grp",
+ .size = sizeof(struct rxe_mc_grp),
+ .cleanup = rxe_mc_cleanup,
+ .flags = RXE_POOL_KEY,
+ .key_offset = offsetof(struct rxe_mc_grp, mgid),
+ .key_size = sizeof(union ib_gid),
+ },
+ [RXE_TYPE_MC_ELEM] = {
+ .name = "rxe-mc_elem",
+ .size = sizeof(struct rxe_mc_elem),
+ .flags = RXE_POOL_ATOMIC,
+ },
+};
+
+static inline char *pool_name(struct rxe_pool *pool)
+{
+ return rxe_type_info[pool->type].name;
+}
+
+static inline struct kmem_cache *pool_cache(struct rxe_pool *pool)
+{
+ return rxe_type_info[pool->type].cache;
+}
+
+static inline enum rxe_elem_type rxe_type(void *arg)
+{
+ struct rxe_pool_entry *elem = arg;
+
+ return elem->pool->type;
+}
+
+int rxe_cache_init(void)
+{
+ int err;
+ int i;
+ size_t size;
+ struct rxe_type_info *type;
+
+ for (i = 0; i < RXE_NUM_TYPES; i++) {
+ type = &rxe_type_info[i];
+ size = ALIGN(type->size, RXE_POOL_ALIGN);
+ type->cache = kmem_cache_create(type->name, size,
+ RXE_POOL_ALIGN,
+ RXE_POOL_CACHE_FLAGS, NULL);
+ if (!type->cache) {
+ pr_err("Unable to init kmem cache for %s\n",
+ type->name);
+ err = -ENOMEM;
+ goto err1;
+ }
+ }
+
+ return 0;
+
+err1:
+ while (--i >= 0) {
+ kmem_cache_destroy(type->cache);
+ type->cache = NULL;
+ }
+
+ return err;
+}
+
+void rxe_cache_exit(void)
+{
+ int i;
+ struct rxe_type_info *type;
+
+ for (i = 0; i < RXE_NUM_TYPES; i++) {
+ type = &rxe_type_info[i];
+ kmem_cache_destroy(type->cache);
+ type->cache = NULL;
+ }
+}
+
+static int rxe_pool_init_index(struct rxe_pool *pool, u32 max, u32 min)
+{
+ int err = 0;
+ size_t size;
+
+ if ((max - min + 1) < pool->max_elem) {
+ pr_warn("not enough indices for max_elem\n");
+ err = -EINVAL;
+ goto out;
+ }
+
+ pool->max_index = max;
+ pool->min_index = min;
+
+ size = BITS_TO_LONGS(max - min + 1) * sizeof(long);
+ pool->table = kmalloc(size, GFP_KERNEL);
+ if (!pool->table) {
+ pr_warn("no memory for bit table\n");
+ err = -ENOMEM;
+ goto out;
+ }
+
+ pool->table_size = size;
+ bitmap_zero(pool->table, max - min + 1);
+
+out:
+ return err;
+}
+
+int rxe_pool_init(
+ struct rxe_dev *rxe,
+ struct rxe_pool *pool,
+ enum rxe_elem_type type,
+ unsigned max_elem)
+{
+ int err = 0;
+ size_t size = rxe_type_info[type].size;
+
+ memset(pool, 0, sizeof(*pool));
+
+ pool->rxe = rxe;
+ pool->type = type;
+ pool->max_elem = max_elem;
+ pool->elem_size = ALIGN(size, RXE_POOL_ALIGN);
+ pool->flags = rxe_type_info[type].flags;
+ pool->tree = RB_ROOT;
+ pool->cleanup = rxe_type_info[type].cleanup;
+
+ atomic_set(&pool->num_elem, 0);
+
+ kref_init(&pool->ref_cnt);
+
+ spin_lock_init(&pool->pool_lock);
+
+ if (rxe_type_info[type].flags & RXE_POOL_INDEX) {
+ err = rxe_pool_init_index(pool,
+ rxe_type_info[type].max_index,
+ rxe_type_info[type].min_index);
+ if (err)
+ goto out;
+ }
+
+ if (rxe_type_info[type].flags & RXE_POOL_KEY) {
+ pool->key_offset = rxe_type_info[type].key_offset;
+ pool->key_size = rxe_type_info[type].key_size;
+ }
+
+ pool->state = rxe_pool_valid;
+
+out:
+ return err;
+}
+
+static void rxe_pool_release(struct kref *kref)
+{
+ struct rxe_pool *pool = container_of(kref, struct rxe_pool, ref_cnt);
+
+ pool->state = rxe_pool_invalid;
+ kfree(pool->table);
+}
+
+static void rxe_pool_put(struct rxe_pool *pool)
+{
+ kref_put(&pool->ref_cnt, rxe_pool_release);
+}
+
+int rxe_pool_cleanup(struct rxe_pool *pool)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&pool->pool_lock, flags);
+ pool->state = rxe_pool_invalid;
+ if (atomic_read(&pool->num_elem) > 0)
+ pr_warn("%s pool destroyed with unfree'd elem\n",
+ pool_name(pool));
+ spin_unlock_irqrestore(&pool->pool_lock, flags);
+
+ rxe_pool_put(pool);
+
+ return 0;
+}
+
+static u32 alloc_index(struct rxe_pool *pool)
+{
+ u32 index;
+ u32 range = pool->max_index - pool->min_index + 1;
+
+ index = find_next_zero_bit(pool->table, range, pool->last);
+ if (index >= range)
+ index = find_first_zero_bit(pool->table, range);
+
+ set_bit(index, pool->table);
+ pool->last = index;
+ return index + pool->min_index;
+}
+
+static void insert_index(struct rxe_pool *pool, struct rxe_pool_entry *new)
+{
+ struct rb_node **link = &pool->tree.rb_node;
+ struct rb_node *parent = NULL;
+ struct rxe_pool_entry *elem;
+
+ while (*link) {
+ parent = *link;
+ elem = rb_entry(parent, struct rxe_pool_entry, node);
+
+ if (elem->index == new->index) {
+ pr_warn("element already exists!\n");
+ goto out;
+ }
+
+ if (elem->index > new->index)
+ link = &(*link)->rb_left;
+ else
+ link = &(*link)->rb_right;
+ }
+
+ rb_link_node(&new->node, parent, link);
+ rb_insert_color(&new->node, &pool->tree);
+out:
+ return;
+}
+
+static void insert_key(struct rxe_pool *pool, struct rxe_pool_entry *new)
+{
+ struct rb_node **link = &pool->tree.rb_node;
+ struct rb_node *parent = NULL;
+ struct rxe_pool_entry *elem;
+ int cmp;
+
+ while (*link) {
+ parent = *link;
+ elem = rb_entry(parent, struct rxe_pool_entry, node);
+
+ cmp = memcmp((u8 *)elem + pool->key_offset,
+ (u8 *)new + pool->key_offset, pool->key_size);
+
+ if (cmp == 0) {
+ pr_warn("key already exists!\n");
+ goto out;
+ }
+
+ if (cmp > 0)
+ link = &(*link)->rb_left;
+ else
+ link = &(*link)->rb_right;
+ }
+
+ rb_link_node(&new->node, parent, link);
+ rb_insert_color(&new->node, &pool->tree);
+out:
+ return;
+}
+
+void rxe_add_key(void *arg, void *key)
+{
+ struct rxe_pool_entry *elem = arg;
+ struct rxe_pool *pool = elem->pool;
+ unsigned long flags;
+
+ spin_lock_irqsave(&pool->pool_lock, flags);
+ memcpy((u8 *)elem + pool->key_offset, key, pool->key_size);
+ insert_key(pool, elem);
+ spin_unlock_irqrestore(&pool->pool_lock, flags);
+}
+
+void rxe_drop_key(void *arg)
+{
+ struct rxe_pool_entry *elem = arg;
+ struct rxe_pool *pool = elem->pool;
+ unsigned long flags;
+
+ spin_lock_irqsave(&pool->pool_lock, flags);
+ rb_erase(&elem->node, &pool->tree);
+ spin_unlock_irqrestore(&pool->pool_lock, flags);
+}
+
+void rxe_add_index(void *arg)
+{
+ struct rxe_pool_entry *elem = arg;
+ struct rxe_pool *pool = elem->pool;
+ unsigned long flags;
+
+ spin_lock_irqsave(&pool->pool_lock, flags);
+ elem->index = alloc_index(pool);
+ insert_index(pool, elem);
+ spin_unlock_irqrestore(&pool->pool_lock, flags);
+}
+
+void rxe_drop_index(void *arg)
+{
+ struct rxe_pool_entry *elem = arg;
+ struct rxe_pool *pool = elem->pool;
+ unsigned long flags;
+
+ spin_lock_irqsave(&pool->pool_lock, flags);
+ clear_bit(elem->index - pool->min_index, pool->table);
+ rb_erase(&elem->node, &pool->tree);
+ spin_unlock_irqrestore(&pool->pool_lock, flags);
+}
+
+void *rxe_alloc(struct rxe_pool *pool)
+{
+ struct rxe_pool_entry *elem;
+ unsigned long flags;
+
+ might_sleep_if(!(pool->flags & RXE_POOL_ATOMIC));
+
+ spin_lock_irqsave(&pool->pool_lock, flags);
+ if (pool->state != rxe_pool_valid) {
+ spin_unlock_irqrestore(&pool->pool_lock, flags);
+ return NULL;
+ }
+ kref_get(&pool->ref_cnt);
+ spin_unlock_irqrestore(&pool->pool_lock, flags);
+
+ kref_get(&pool->rxe->ref_cnt);
+
+ if (atomic_inc_return(&pool->num_elem) > pool->max_elem) {
+ atomic_dec(&pool->num_elem);
+ rxe_dev_put(pool->rxe);
+ rxe_pool_put(pool);
+ return NULL;
+ }
+
+ elem = kmem_cache_zalloc(pool_cache(pool),
+ (pool->flags & RXE_POOL_ATOMIC) ?
+ GFP_ATOMIC : GFP_KERNEL);
+
+ elem->pool = pool;
+ kref_init(&elem->ref_cnt);
+
+ return elem;
+}
+
+void rxe_elem_release(struct kref *kref)
+{
+ struct rxe_pool_entry *elem =
+ container_of(kref, struct rxe_pool_entry, ref_cnt);
+ struct rxe_pool *pool = elem->pool;
+
+ if (pool->cleanup)
+ pool->cleanup(elem);
+
+ kmem_cache_free(pool_cache(pool), elem);
+ atomic_dec(&pool->num_elem);
+ rxe_dev_put(pool->rxe);
+ rxe_pool_put(pool);
+}
+
+void *rxe_pool_get_index(struct rxe_pool *pool, u32 index)
+{
+ struct rb_node *node = NULL;
+ struct rxe_pool_entry *elem = NULL;
+ unsigned long flags;
+
+ spin_lock_irqsave(&pool->pool_lock, flags);
+
+ if (pool->state != rxe_pool_valid)
+ goto out;
+
+ node = pool->tree.rb_node;
+
+ while (node) {
+ elem = rb_entry(node, struct rxe_pool_entry, node);
+
+ if (elem->index > index)
+ node = node->rb_left;
+ else if (elem->index < index)
+ node = node->rb_right;
+ else
+ break;
+ }
+
+ if (node)
+ kref_get(&elem->ref_cnt);
+
+out:
+ spin_unlock_irqrestore(&pool->pool_lock, flags);
+ return node ? (void *)elem : NULL;
+}
+
+void *rxe_pool_get_key(struct rxe_pool *pool, void *key)
+{
+ struct rb_node *node = NULL;
+ struct rxe_pool_entry *elem = NULL;
+ int cmp;
+ unsigned long flags;
+
+ spin_lock_irqsave(&pool->pool_lock, flags);
+
+ if (pool->state != rxe_pool_valid)
+ goto out;
+
+ node = pool->tree.rb_node;
+
+ while (node) {
+ elem = rb_entry(node, struct rxe_pool_entry, node);
+
+ cmp = memcmp((u8 *)elem + pool->key_offset,
+ key, pool->key_size);
+
+ if (cmp > 0)
+ node = node->rb_left;
+ else if (cmp < 0)
+ node = node->rb_right;
+ else
+ break;
+ }
+
+ if (node)
+ kref_get(&elem->ref_cnt);
+
+out:
+ spin_unlock_irqrestore(&pool->pool_lock, flags);
+ return node ? ((void *)elem) : NULL;
+}
diff --git a/drivers/infiniband/sw/rxe/rxe_pool.h b/drivers/infiniband/sw/rxe/rxe_pool.h
new file mode 100644
index 000000000000..4d04830adcae
--- /dev/null
+++ b/drivers/infiniband/sw/rxe/rxe_pool.h
@@ -0,0 +1,163 @@
+/*
+ * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
+ * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef RXE_POOL_H
+#define RXE_POOL_H
+
+#define RXE_POOL_ALIGN (16)
+#define RXE_POOL_CACHE_FLAGS (0)
+
+enum rxe_pool_flags {
+ RXE_POOL_ATOMIC = BIT(0),
+ RXE_POOL_INDEX = BIT(1),
+ RXE_POOL_KEY = BIT(2),
+};
+
+enum rxe_elem_type {
+ RXE_TYPE_UC,
+ RXE_TYPE_PD,
+ RXE_TYPE_AH,
+ RXE_TYPE_SRQ,
+ RXE_TYPE_QP,
+ RXE_TYPE_CQ,
+ RXE_TYPE_MR,
+ RXE_TYPE_MW,
+ RXE_TYPE_MC_GRP,
+ RXE_TYPE_MC_ELEM,
+ RXE_NUM_TYPES, /* keep me last */
+};
+
+struct rxe_type_info {
+ char *name;
+ size_t size;
+ void (*cleanup)(void *obj);
+ enum rxe_pool_flags flags;
+ u32 max_index;
+ u32 min_index;
+ size_t key_offset;
+ size_t key_size;
+ struct kmem_cache *cache;
+};
+
+extern struct rxe_type_info rxe_type_info[];
+
+enum rxe_pool_state {
+ rxe_pool_invalid,
+ rxe_pool_valid,
+};
+
+struct rxe_pool_entry {
+ struct rxe_pool *pool;
+ struct kref ref_cnt;
+ struct list_head list;
+
+ /* only used if indexed or keyed */
+ struct rb_node node;
+ u32 index;
+};
+
+struct rxe_pool {
+ struct rxe_dev *rxe;
+ spinlock_t pool_lock; /* pool spinlock */
+ size_t elem_size;
+ struct kref ref_cnt;
+ void (*cleanup)(void *obj);
+ enum rxe_pool_state state;
+ enum rxe_pool_flags flags;
+ enum rxe_elem_type type;
+
+ unsigned int max_elem;
+ atomic_t num_elem;
+
+ /* only used if indexed or keyed */
+ struct rb_root tree;
+ unsigned long *table;
+ size_t table_size;
+ u32 max_index;
+ u32 min_index;
+ u32 last;
+ size_t key_offset;
+ size_t key_size;
+};
+
+/* initialize slab caches for managed objects */
+int rxe_cache_init(void);
+
+/* cleanup slab caches for managed objects */
+void rxe_cache_exit(void);
+
+/* initialize a pool of objects with given limit on
+ * number of elements. gets parameters from rxe_type_info
+ * pool elements will be allocated out of a slab cache
+ */
+int rxe_pool_init(struct rxe_dev *rxe, struct rxe_pool *pool,
+ enum rxe_elem_type type, u32 max_elem);
+
+/* free resources from object pool */
+int rxe_pool_cleanup(struct rxe_pool *pool);
+
+/* allocate an object from pool */
+void *rxe_alloc(struct rxe_pool *pool);
+
+/* assign an index to an indexed object and insert object into
+ * pool's rb tree
+ */
+void rxe_add_index(void *elem);
+
+/* drop an index and remove object from rb tree */
+void rxe_drop_index(void *elem);
+
+/* assign a key to a keyed object and insert object into
+ * pool's rb tree
+ */
+void rxe_add_key(void *elem, void *key);
+
+/* remove elem from rb tree */
+void rxe_drop_key(void *elem);
+
+/* lookup an indexed object from index. takes a reference on object */
+void *rxe_pool_get_index(struct rxe_pool *pool, u32 index);
+
+/* lookup keyed object from key. takes a reference on the object */
+void *rxe_pool_get_key(struct rxe_pool *pool, void *key);
+
+/* cleanup an object when all references are dropped */
+void rxe_elem_release(struct kref *kref);
+
+/* take a reference on an object */
+#define rxe_add_ref(elem) kref_get(&(elem)->pelem.ref_cnt)
+
+/* drop a reference on an object */
+#define rxe_drop_ref(elem) kref_put(&(elem)->pelem.ref_cnt, rxe_elem_release)
+
+#endif /* RXE_POOL_H */
diff --git a/drivers/infiniband/sw/rxe/rxe_qp.c b/drivers/infiniband/sw/rxe/rxe_qp.c
new file mode 100644
index 000000000000..22ba24f2a2c1
--- /dev/null
+++ b/drivers/infiniband/sw/rxe/rxe_qp.c
@@ -0,0 +1,851 @@
+/*
+ * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
+ * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/skbuff.h>
+#include <linux/delay.h>
+#include <linux/sched.h>
+
+#include "rxe.h"
+#include "rxe_loc.h"
+#include "rxe_queue.h"
+#include "rxe_task.h"
+
+char *rxe_qp_state_name[] = {
+ [QP_STATE_RESET] = "RESET",
+ [QP_STATE_INIT] = "INIT",
+ [QP_STATE_READY] = "READY",
+ [QP_STATE_DRAIN] = "DRAIN",
+ [QP_STATE_DRAINED] = "DRAINED",
+ [QP_STATE_ERROR] = "ERROR",
+};
+
+static int rxe_qp_chk_cap(struct rxe_dev *rxe, struct ib_qp_cap *cap,
+ int has_srq)
+{
+ if (cap->max_send_wr > rxe->attr.max_qp_wr) {
+ pr_warn("invalid send wr = %d > %d\n",
+ cap->max_send_wr, rxe->attr.max_qp_wr);
+ goto err1;
+ }
+
+ if (cap->max_send_sge > rxe->attr.max_sge) {
+ pr_warn("invalid send sge = %d > %d\n",
+ cap->max_send_sge, rxe->attr.max_sge);
+ goto err1;
+ }
+
+ if (!has_srq) {
+ if (cap->max_recv_wr > rxe->attr.max_qp_wr) {
+ pr_warn("invalid recv wr = %d > %d\n",
+ cap->max_recv_wr, rxe->attr.max_qp_wr);
+ goto err1;
+ }
+
+ if (cap->max_recv_sge > rxe->attr.max_sge) {
+ pr_warn("invalid recv sge = %d > %d\n",
+ cap->max_recv_sge, rxe->attr.max_sge);
+ goto err1;
+ }
+ }
+
+ if (cap->max_inline_data > rxe->max_inline_data) {
+ pr_warn("invalid max inline data = %d > %d\n",
+ cap->max_inline_data, rxe->max_inline_data);
+ goto err1;
+ }
+
+ return 0;
+
+err1:
+ return -EINVAL;
+}
+
+int rxe_qp_chk_init(struct rxe_dev *rxe, struct ib_qp_init_attr *init)
+{
+ struct ib_qp_cap *cap = &init->cap;
+ struct rxe_port *port;
+ int port_num = init->port_num;
+
+ if (!init->recv_cq || !init->send_cq) {
+ pr_warn("missing cq\n");
+ goto err1;
+ }
+
+ if (rxe_qp_chk_cap(rxe, cap, !!init->srq))
+ goto err1;
+
+ if (init->qp_type == IB_QPT_SMI || init->qp_type == IB_QPT_GSI) {
+ if (port_num != 1) {
+ pr_warn("invalid port = %d\n", port_num);
+ goto err1;
+ }
+
+ port = &rxe->port;
+
+ if (init->qp_type == IB_QPT_SMI && port->qp_smi_index) {
+ pr_warn("SMI QP exists for port %d\n", port_num);
+ goto err1;
+ }
+
+ if (init->qp_type == IB_QPT_GSI && port->qp_gsi_index) {
+ pr_warn("GSI QP exists for port %d\n", port_num);
+ goto err1;
+ }
+ }
+
+ return 0;
+
+err1:
+ return -EINVAL;
+}
+
+static int alloc_rd_atomic_resources(struct rxe_qp *qp, unsigned int n)
+{
+ qp->resp.res_head = 0;
+ qp->resp.res_tail = 0;
+ qp->resp.resources = kcalloc(n, sizeof(struct resp_res), GFP_KERNEL);
+
+ if (!qp->resp.resources)
+ return -ENOMEM;
+
+ return 0;
+}
+
+static void free_rd_atomic_resources(struct rxe_qp *qp)
+{
+ if (qp->resp.resources) {
+ int i;
+
+ for (i = 0; i < qp->attr.max_rd_atomic; i++) {
+ struct resp_res *res = &qp->resp.resources[i];
+
+ free_rd_atomic_resource(qp, res);
+ }
+ kfree(qp->resp.resources);
+ qp->resp.resources = NULL;
+ }
+}
+
+void free_rd_atomic_resource(struct rxe_qp *qp, struct resp_res *res)
+{
+ if (res->type == RXE_ATOMIC_MASK) {
+ rxe_drop_ref(qp);
+ kfree_skb(res->atomic.skb);
+ } else if (res->type == RXE_READ_MASK) {
+ if (res->read.mr)
+ rxe_drop_ref(res->read.mr);
+ }
+ res->type = 0;
+}
+
+static void cleanup_rd_atomic_resources(struct rxe_qp *qp)
+{
+ int i;
+ struct resp_res *res;
+
+ if (qp->resp.resources) {
+ for (i = 0; i < qp->attr.max_rd_atomic; i++) {
+ res = &qp->resp.resources[i];
+ free_rd_atomic_resource(qp, res);
+ }
+ }
+}
+
+static void rxe_qp_init_misc(struct rxe_dev *rxe, struct rxe_qp *qp,
+ struct ib_qp_init_attr *init)
+{
+ struct rxe_port *port;
+ u32 qpn;
+
+ qp->sq_sig_type = init->sq_sig_type;
+ qp->attr.path_mtu = 1;
+ qp->mtu = ib_mtu_enum_to_int(qp->attr.path_mtu);
+
+ qpn = qp->pelem.index;
+ port = &rxe->port;
+
+ switch (init->qp_type) {
+ case IB_QPT_SMI:
+ qp->ibqp.qp_num = 0;
+ port->qp_smi_index = qpn;
+ qp->attr.port_num = init->port_num;
+ break;
+
+ case IB_QPT_GSI:
+ qp->ibqp.qp_num = 1;
+ port->qp_gsi_index = qpn;
+ qp->attr.port_num = init->port_num;
+ break;
+
+ default:
+ qp->ibqp.qp_num = qpn;
+ break;
+ }
+
+ INIT_LIST_HEAD(&qp->grp_list);
+
+ skb_queue_head_init(&qp->send_pkts);
+
+ spin_lock_init(&qp->grp_lock);
+ spin_lock_init(&qp->state_lock);
+
+ atomic_set(&qp->ssn, 0);
+ atomic_set(&qp->skb_out, 0);
+}
+
+static int rxe_qp_init_req(struct rxe_dev *rxe, struct rxe_qp *qp,
+ struct ib_qp_init_attr *init,
+ struct ib_ucontext *context, struct ib_udata *udata)
+{
+ int err;
+ int wqe_size;
+
+ err = sock_create_kern(&init_net, AF_INET, SOCK_DGRAM, 0, &qp->sk);
+ if (err < 0)
+ return err;
+ qp->sk->sk->sk_user_data = qp;
+
+ qp->sq.max_wr = init->cap.max_send_wr;
+ qp->sq.max_sge = init->cap.max_send_sge;
+ qp->sq.max_inline = init->cap.max_inline_data;
+
+ wqe_size = max_t(int, sizeof(struct rxe_send_wqe) +
+ qp->sq.max_sge * sizeof(struct ib_sge),
+ sizeof(struct rxe_send_wqe) +
+ qp->sq.max_inline);
+
+ qp->sq.queue = rxe_queue_init(rxe,
+ &qp->sq.max_wr,
+ wqe_size);
+ if (!qp->sq.queue)
+ return -ENOMEM;
+
+ err = do_mmap_info(rxe, udata, true,
+ context, qp->sq.queue->buf,
+ qp->sq.queue->buf_size, &qp->sq.queue->ip);
+
+ if (err) {
+ kvfree(qp->sq.queue->buf);
+ kfree(qp->sq.queue);
+ return err;
+ }
+
+ qp->req.wqe_index = producer_index(qp->sq.queue);
+ qp->req.state = QP_STATE_RESET;
+ qp->req.opcode = -1;
+ qp->comp.opcode = -1;
+
+ spin_lock_init(&qp->sq.sq_lock);
+ skb_queue_head_init(&qp->req_pkts);
+
+ rxe_init_task(rxe, &qp->req.task, qp,
+ rxe_requester, "req");
+ rxe_init_task(rxe, &qp->comp.task, qp,
+ rxe_completer, "comp");
+
+ init_timer(&qp->rnr_nak_timer);
+ qp->rnr_nak_timer.function = rnr_nak_timer;
+ qp->rnr_nak_timer.data = (unsigned long)qp;
+
+ init_timer(&qp->retrans_timer);
+ qp->retrans_timer.function = retransmit_timer;
+ qp->retrans_timer.data = (unsigned long)qp;
+ qp->qp_timeout_jiffies = 0; /* Can't be set for UD/UC in modify_qp */
+
+ return 0;
+}
+
+static int rxe_qp_init_resp(struct rxe_dev *rxe, struct rxe_qp *qp,
+ struct ib_qp_init_attr *init,
+ struct ib_ucontext *context, struct ib_udata *udata)
+{
+ int err;
+ int wqe_size;
+
+ if (!qp->srq) {
+ qp->rq.max_wr = init->cap.max_recv_wr;
+ qp->rq.max_sge = init->cap.max_recv_sge;
+
+ wqe_size = rcv_wqe_size(qp->rq.max_sge);
+
+ pr_debug("max_wr = %d, max_sge = %d, wqe_size = %d\n",
+ qp->rq.max_wr, qp->rq.max_sge, wqe_size);
+
+ qp->rq.queue = rxe_queue_init(rxe,
+ &qp->rq.max_wr,
+ wqe_size);
+ if (!qp->rq.queue)
+ return -ENOMEM;
+
+ err = do_mmap_info(rxe, udata, false, context,
+ qp->rq.queue->buf,
+ qp->rq.queue->buf_size,
+ &qp->rq.queue->ip);
+ if (err) {
+ kvfree(qp->rq.queue->buf);
+ kfree(qp->rq.queue);
+ return err;
+ }
+ }
+
+ spin_lock_init(&qp->rq.producer_lock);
+ spin_lock_init(&qp->rq.consumer_lock);
+
+ skb_queue_head_init(&qp->resp_pkts);
+
+ rxe_init_task(rxe, &qp->resp.task, qp,
+ rxe_responder, "resp");
+
+ qp->resp.opcode = OPCODE_NONE;
+ qp->resp.msn = 0;
+ qp->resp.state = QP_STATE_RESET;
+
+ return 0;
+}
+
+/* called by the create qp verb */
+int rxe_qp_from_init(struct rxe_dev *rxe, struct rxe_qp *qp, struct rxe_pd *pd,
+ struct ib_qp_init_attr *init, struct ib_udata *udata,
+ struct ib_pd *ibpd)
+{
+ int err;
+ struct rxe_cq *rcq = to_rcq(init->recv_cq);
+ struct rxe_cq *scq = to_rcq(init->send_cq);
+ struct rxe_srq *srq = init->srq ? to_rsrq(init->srq) : NULL;
+ struct ib_ucontext *context = udata ? ibpd->uobject->context : NULL;
+
+ rxe_add_ref(pd);
+ rxe_add_ref(rcq);
+ rxe_add_ref(scq);
+ if (srq)
+ rxe_add_ref(srq);
+
+ qp->pd = pd;
+ qp->rcq = rcq;
+ qp->scq = scq;
+ qp->srq = srq;
+
+ rxe_qp_init_misc(rxe, qp, init);
+
+ err = rxe_qp_init_req(rxe, qp, init, context, udata);
+ if (err)
+ goto err1;
+
+ err = rxe_qp_init_resp(rxe, qp, init, context, udata);
+ if (err)
+ goto err2;
+
+ qp->attr.qp_state = IB_QPS_RESET;
+ qp->valid = 1;
+
+ return 0;
+
+err2:
+ rxe_queue_cleanup(qp->sq.queue);
+err1:
+ if (srq)
+ rxe_drop_ref(srq);
+ rxe_drop_ref(scq);
+ rxe_drop_ref(rcq);
+ rxe_drop_ref(pd);
+
+ return err;
+}
+
+/* called by the query qp verb */
+int rxe_qp_to_init(struct rxe_qp *qp, struct ib_qp_init_attr *init)
+{
+ init->event_handler = qp->ibqp.event_handler;
+ init->qp_context = qp->ibqp.qp_context;
+ init->send_cq = qp->ibqp.send_cq;
+ init->recv_cq = qp->ibqp.recv_cq;
+ init->srq = qp->ibqp.srq;
+
+ init->cap.max_send_wr = qp->sq.max_wr;
+ init->cap.max_send_sge = qp->sq.max_sge;
+ init->cap.max_inline_data = qp->sq.max_inline;
+
+ if (!qp->srq) {
+ init->cap.max_recv_wr = qp->rq.max_wr;
+ init->cap.max_recv_sge = qp->rq.max_sge;
+ }
+
+ init->sq_sig_type = qp->sq_sig_type;
+
+ init->qp_type = qp->ibqp.qp_type;
+ init->port_num = 1;
+
+ return 0;
+}
+
+/* called by the modify qp verb, this routine checks all the parameters before
+ * making any changes
+ */
+int rxe_qp_chk_attr(struct rxe_dev *rxe, struct rxe_qp *qp,
+ struct ib_qp_attr *attr, int mask)
+{
+ enum ib_qp_state cur_state = (mask & IB_QP_CUR_STATE) ?
+ attr->cur_qp_state : qp->attr.qp_state;
+ enum ib_qp_state new_state = (mask & IB_QP_STATE) ?
+ attr->qp_state : cur_state;
+
+ if (!ib_modify_qp_is_ok(cur_state, new_state, qp_type(qp), mask,
+ IB_LINK_LAYER_ETHERNET)) {
+ pr_warn("invalid mask or state for qp\n");
+ goto err1;
+ }
+
+ if (mask & IB_QP_STATE) {
+ if (cur_state == IB_QPS_SQD) {
+ if (qp->req.state == QP_STATE_DRAIN &&
+ new_state != IB_QPS_ERR)
+ goto err1;
+ }
+ }
+
+ if (mask & IB_QP_PORT) {
+ if (attr->port_num != 1) {
+ pr_warn("invalid port %d\n", attr->port_num);
+ goto err1;
+ }
+ }
+
+ if (mask & IB_QP_CAP && rxe_qp_chk_cap(rxe, &attr->cap, !!qp->srq))
+ goto err1;
+
+ if (mask & IB_QP_AV && rxe_av_chk_attr(rxe, &attr->ah_attr))
+ goto err1;
+
+ if (mask & IB_QP_ALT_PATH) {
+ if (rxe_av_chk_attr(rxe, &attr->alt_ah_attr))
+ goto err1;
+ if (attr->alt_port_num != 1) {
+ pr_warn("invalid alt port %d\n", attr->alt_port_num);
+ goto err1;
+ }
+ if (attr->alt_timeout > 31) {
+ pr_warn("invalid QP alt timeout %d > 31\n",
+ attr->alt_timeout);
+ goto err1;
+ }
+ }
+
+ if (mask & IB_QP_PATH_MTU) {
+ struct rxe_port *port = &rxe->port;
+
+ enum ib_mtu max_mtu = port->attr.max_mtu;
+ enum ib_mtu mtu = attr->path_mtu;
+
+ if (mtu > max_mtu) {
+ pr_debug("invalid mtu (%d) > (%d)\n",
+ ib_mtu_enum_to_int(mtu),
+ ib_mtu_enum_to_int(max_mtu));
+ goto err1;
+ }
+ }
+
+ if (mask & IB_QP_MAX_QP_RD_ATOMIC) {
+ if (attr->max_rd_atomic > rxe->attr.max_qp_rd_atom) {
+ pr_warn("invalid max_rd_atomic %d > %d\n",
+ attr->max_rd_atomic,
+ rxe->attr.max_qp_rd_atom);
+ goto err1;
+ }
+ }
+
+ if (mask & IB_QP_TIMEOUT) {
+ if (attr->timeout > 31) {
+ pr_warn("invalid QP timeout %d > 31\n",
+ attr->timeout);
+ goto err1;
+ }
+ }
+
+ return 0;
+
+err1:
+ return -EINVAL;
+}
+
+/* move the qp to the reset state */
+static void rxe_qp_reset(struct rxe_qp *qp)
+{
+ /* stop tasks from running */
+ rxe_disable_task(&qp->resp.task);
+
+ /* stop request/comp */
+ if (qp->sq.queue) {
+ if (qp_type(qp) == IB_QPT_RC)
+ rxe_disable_task(&qp->comp.task);
+ rxe_disable_task(&qp->req.task);
+ }
+
+ /* move qp to the reset state */
+ qp->req.state = QP_STATE_RESET;
+ qp->resp.state = QP_STATE_RESET;
+
+ /* let state machines reset themselves drain work and packet queues
+ * etc.
+ */
+ __rxe_do_task(&qp->resp.task);
+
+ if (qp->sq.queue) {
+ __rxe_do_task(&qp->comp.task);
+ __rxe_do_task(&qp->req.task);
+ }
+
+ /* cleanup attributes */
+ atomic_set(&qp->ssn, 0);
+ qp->req.opcode = -1;
+ qp->req.need_retry = 0;
+ qp->req.noack_pkts = 0;
+ qp->resp.msn = 0;
+ qp->resp.opcode = -1;
+ qp->resp.drop_msg = 0;
+ qp->resp.goto_error = 0;
+ qp->resp.sent_psn_nak = 0;
+
+ if (qp->resp.mr) {
+ rxe_drop_ref(qp->resp.mr);
+ qp->resp.mr = NULL;
+ }
+
+ cleanup_rd_atomic_resources(qp);
+
+ /* reenable tasks */
+ rxe_enable_task(&qp->resp.task);
+
+ if (qp->sq.queue) {
+ if (qp_type(qp) == IB_QPT_RC)
+ rxe_enable_task(&qp->comp.task);
+
+ rxe_enable_task(&qp->req.task);
+ }
+}
+
+/* drain the send queue */
+static void rxe_qp_drain(struct rxe_qp *qp)
+{
+ if (qp->sq.queue) {
+ if (qp->req.state != QP_STATE_DRAINED) {
+ qp->req.state = QP_STATE_DRAIN;
+ if (qp_type(qp) == IB_QPT_RC)
+ rxe_run_task(&qp->comp.task, 1);
+ else
+ __rxe_do_task(&qp->comp.task);
+ rxe_run_task(&qp->req.task, 1);
+ }
+ }
+}
+
+/* move the qp to the error state */
+void rxe_qp_error(struct rxe_qp *qp)
+{
+ qp->req.state = QP_STATE_ERROR;
+ qp->resp.state = QP_STATE_ERROR;
+
+ /* drain work and packet queues */
+ rxe_run_task(&qp->resp.task, 1);
+
+ if (qp_type(qp) == IB_QPT_RC)
+ rxe_run_task(&qp->comp.task, 1);
+ else
+ __rxe_do_task(&qp->comp.task);
+ rxe_run_task(&qp->req.task, 1);
+}
+
+/* called by the modify qp verb */
+int rxe_qp_from_attr(struct rxe_qp *qp, struct ib_qp_attr *attr, int mask,
+ struct ib_udata *udata)
+{
+ int err;
+ struct rxe_dev *rxe = to_rdev(qp->ibqp.device);
+ union ib_gid sgid;
+ struct ib_gid_attr sgid_attr;
+
+ if (mask & IB_QP_MAX_QP_RD_ATOMIC) {
+ int max_rd_atomic = __roundup_pow_of_two(attr->max_rd_atomic);
+
+ free_rd_atomic_resources(qp);
+
+ err = alloc_rd_atomic_resources(qp, max_rd_atomic);
+ if (err)
+ return err;
+
+ qp->attr.max_rd_atomic = max_rd_atomic;
+ atomic_set(&qp->req.rd_atomic, max_rd_atomic);
+ }
+
+ if (mask & IB_QP_CUR_STATE)
+ qp->attr.cur_qp_state = attr->qp_state;
+
+ if (mask & IB_QP_EN_SQD_ASYNC_NOTIFY)
+ qp->attr.en_sqd_async_notify = attr->en_sqd_async_notify;
+
+ if (mask & IB_QP_ACCESS_FLAGS)
+ qp->attr.qp_access_flags = attr->qp_access_flags;
+
+ if (mask & IB_QP_PKEY_INDEX)
+ qp->attr.pkey_index = attr->pkey_index;
+
+ if (mask & IB_QP_PORT)
+ qp->attr.port_num = attr->port_num;
+
+ if (mask & IB_QP_QKEY)
+ qp->attr.qkey = attr->qkey;
+
+ if (mask & IB_QP_AV) {
+ ib_get_cached_gid(&rxe->ib_dev, 1,
+ attr->ah_attr.grh.sgid_index, &sgid,
+ &sgid_attr);
+ rxe_av_from_attr(rxe, attr->port_num, &qp->pri_av,
+ &attr->ah_attr);
+ rxe_av_fill_ip_info(rxe, &qp->pri_av, &attr->ah_attr,
+ &sgid_attr, &sgid);
+ if (sgid_attr.ndev)
+ dev_put(sgid_attr.ndev);
+ }
+
+ if (mask & IB_QP_ALT_PATH) {
+ ib_get_cached_gid(&rxe->ib_dev, 1,
+ attr->alt_ah_attr.grh.sgid_index, &sgid,
+ &sgid_attr);
+
+ rxe_av_from_attr(rxe, attr->alt_port_num, &qp->alt_av,
+ &attr->alt_ah_attr);
+ rxe_av_fill_ip_info(rxe, &qp->alt_av, &attr->alt_ah_attr,
+ &sgid_attr, &sgid);
+ if (sgid_attr.ndev)
+ dev_put(sgid_attr.ndev);
+
+ qp->attr.alt_port_num = attr->alt_port_num;
+ qp->attr.alt_pkey_index = attr->alt_pkey_index;
+ qp->attr.alt_timeout = attr->alt_timeout;
+ }
+
+ if (mask & IB_QP_PATH_MTU) {
+ qp->attr.path_mtu = attr->path_mtu;
+ qp->mtu = ib_mtu_enum_to_int(attr->path_mtu);
+ }
+
+ if (mask & IB_QP_TIMEOUT) {
+ qp->attr.timeout = attr->timeout;
+ if (attr->timeout == 0) {
+ qp->qp_timeout_jiffies = 0;
+ } else {
+ /* According to the spec, timeout = 4.096 * 2 ^ attr->timeout [us] */
+ int j = nsecs_to_jiffies(4096ULL << attr->timeout);
+
+ qp->qp_timeout_jiffies = j ? j : 1;
+ }
+ }
+
+ if (mask & IB_QP_RETRY_CNT) {
+ qp->attr.retry_cnt = attr->retry_cnt;
+ qp->comp.retry_cnt = attr->retry_cnt;
+ pr_debug("set retry count = %d\n", attr->retry_cnt);
+ }
+
+ if (mask & IB_QP_RNR_RETRY) {
+ qp->attr.rnr_retry = attr->rnr_retry;
+ qp->comp.rnr_retry = attr->rnr_retry;
+ pr_debug("set rnr retry count = %d\n", attr->rnr_retry);
+ }
+
+ if (mask & IB_QP_RQ_PSN) {
+ qp->attr.rq_psn = (attr->rq_psn & BTH_PSN_MASK);
+ qp->resp.psn = qp->attr.rq_psn;
+ pr_debug("set resp psn = 0x%x\n", qp->resp.psn);
+ }
+
+ if (mask & IB_QP_MIN_RNR_TIMER) {
+ qp->attr.min_rnr_timer = attr->min_rnr_timer;
+ pr_debug("set min rnr timer = 0x%x\n",
+ attr->min_rnr_timer);
+ }
+
+ if (mask & IB_QP_SQ_PSN) {
+ qp->attr.sq_psn = (attr->sq_psn & BTH_PSN_MASK);
+ qp->req.psn = qp->attr.sq_psn;
+ qp->comp.psn = qp->attr.sq_psn;
+ pr_debug("set req psn = 0x%x\n", qp->req.psn);
+ }
+
+ if (mask & IB_QP_MAX_DEST_RD_ATOMIC) {
+ qp->attr.max_dest_rd_atomic =
+ __roundup_pow_of_two(attr->max_dest_rd_atomic);
+ }
+
+ if (mask & IB_QP_PATH_MIG_STATE)
+ qp->attr.path_mig_state = attr->path_mig_state;
+
+ if (mask & IB_QP_DEST_QPN)
+ qp->attr.dest_qp_num = attr->dest_qp_num;
+
+ if (mask & IB_QP_STATE) {
+ qp->attr.qp_state = attr->qp_state;
+
+ switch (attr->qp_state) {
+ case IB_QPS_RESET:
+ pr_debug("qp state -> RESET\n");
+ rxe_qp_reset(qp);
+ break;
+
+ case IB_QPS_INIT:
+ pr_debug("qp state -> INIT\n");
+ qp->req.state = QP_STATE_INIT;
+ qp->resp.state = QP_STATE_INIT;
+ break;
+
+ case IB_QPS_RTR:
+ pr_debug("qp state -> RTR\n");
+ qp->resp.state = QP_STATE_READY;
+ break;
+
+ case IB_QPS_RTS:
+ pr_debug("qp state -> RTS\n");
+ qp->req.state = QP_STATE_READY;
+ break;
+
+ case IB_QPS_SQD:
+ pr_debug("qp state -> SQD\n");
+ rxe_qp_drain(qp);
+ break;
+
+ case IB_QPS_SQE:
+ pr_warn("qp state -> SQE !!?\n");
+ /* Not possible from modify_qp. */
+ break;
+
+ case IB_QPS_ERR:
+ pr_debug("qp state -> ERR\n");
+ rxe_qp_error(qp);
+ break;
+ }
+ }
+
+ return 0;
+}
+
+/* called by the query qp verb */
+int rxe_qp_to_attr(struct rxe_qp *qp, struct ib_qp_attr *attr, int mask)
+{
+ struct rxe_dev *rxe = to_rdev(qp->ibqp.device);
+
+ *attr = qp->attr;
+
+ attr->rq_psn = qp->resp.psn;
+ attr->sq_psn = qp->req.psn;
+
+ attr->cap.max_send_wr = qp->sq.max_wr;
+ attr->cap.max_send_sge = qp->sq.max_sge;
+ attr->cap.max_inline_data = qp->sq.max_inline;
+
+ if (!qp->srq) {
+ attr->cap.max_recv_wr = qp->rq.max_wr;
+ attr->cap.max_recv_sge = qp->rq.max_sge;
+ }
+
+ rxe_av_to_attr(rxe, &qp->pri_av, &attr->ah_attr);
+ rxe_av_to_attr(rxe, &qp->alt_av, &attr->alt_ah_attr);
+
+ if (qp->req.state == QP_STATE_DRAIN) {
+ attr->sq_draining = 1;
+ /* applications that get this state
+ * typically spin on it. yield the
+ * processor
+ */
+ cond_resched();
+ } else {
+ attr->sq_draining = 0;
+ }
+
+ pr_debug("attr->sq_draining = %d\n", attr->sq_draining);
+
+ return 0;
+}
+
+/* called by the destroy qp verb */
+void rxe_qp_destroy(struct rxe_qp *qp)
+{
+ qp->valid = 0;
+ qp->qp_timeout_jiffies = 0;
+ rxe_cleanup_task(&qp->resp.task);
+
+ del_timer_sync(&qp->retrans_timer);
+ del_timer_sync(&qp->rnr_nak_timer);
+
+ rxe_cleanup_task(&qp->req.task);
+ if (qp_type(qp) == IB_QPT_RC)
+ rxe_cleanup_task(&qp->comp.task);
+
+ /* flush out any receive wr's or pending requests */
+ __rxe_do_task(&qp->req.task);
+ if (qp->sq.queue) {
+ __rxe_do_task(&qp->comp.task);
+ __rxe_do_task(&qp->req.task);
+ }
+}
+
+/* called when the last reference to the qp is dropped */
+void rxe_qp_cleanup(void *arg)
+{
+ struct rxe_qp *qp = arg;
+
+ rxe_drop_all_mcast_groups(qp);
+
+ if (qp->sq.queue)
+ rxe_queue_cleanup(qp->sq.queue);
+
+ if (qp->srq)
+ rxe_drop_ref(qp->srq);
+
+ if (qp->rq.queue)
+ rxe_queue_cleanup(qp->rq.queue);
+
+ if (qp->scq)
+ rxe_drop_ref(qp->scq);
+ if (qp->rcq)
+ rxe_drop_ref(qp->rcq);
+ if (qp->pd)
+ rxe_drop_ref(qp->pd);
+
+ if (qp->resp.mr) {
+ rxe_drop_ref(qp->resp.mr);
+ qp->resp.mr = NULL;
+ }
+
+ free_rd_atomic_resources(qp);
+
+ kernel_sock_shutdown(qp->sk, SHUT_RDWR);
+}
diff --git a/drivers/infiniband/sw/rxe/rxe_queue.c b/drivers/infiniband/sw/rxe/rxe_queue.c
new file mode 100644
index 000000000000..08274254eb88
--- /dev/null
+++ b/drivers/infiniband/sw/rxe/rxe_queue.c
@@ -0,0 +1,217 @@
+/*
+ * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
+ * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must retailuce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/vmalloc.h>
+#include "rxe.h"
+#include "rxe_loc.h"
+#include "rxe_queue.h"
+
+int do_mmap_info(struct rxe_dev *rxe,
+ struct ib_udata *udata,
+ bool is_req,
+ struct ib_ucontext *context,
+ struct rxe_queue_buf *buf,
+ size_t buf_size,
+ struct rxe_mmap_info **ip_p)
+{
+ int err;
+ u32 len, offset;
+ struct rxe_mmap_info *ip = NULL;
+
+ if (udata) {
+ if (is_req) {
+ len = udata->outlen - sizeof(struct mminfo);
+ offset = sizeof(struct mminfo);
+ } else {
+ len = udata->outlen;
+ offset = 0;
+ }
+
+ if (len < sizeof(ip->info))
+ goto err1;
+
+ ip = rxe_create_mmap_info(rxe, buf_size, context, buf);
+ if (!ip)
+ goto err1;
+
+ err = copy_to_user(udata->outbuf + offset, &ip->info,
+ sizeof(ip->info));
+ if (err)
+ goto err2;
+
+ spin_lock_bh(&rxe->pending_lock);
+ list_add(&ip->pending_mmaps, &rxe->pending_mmaps);
+ spin_unlock_bh(&rxe->pending_lock);
+ }
+
+ *ip_p = ip;
+
+ return 0;
+
+err2:
+ kfree(ip);
+err1:
+ return -EINVAL;
+}
+
+struct rxe_queue *rxe_queue_init(struct rxe_dev *rxe,
+ int *num_elem,
+ unsigned int elem_size)
+{
+ struct rxe_queue *q;
+ size_t buf_size;
+ unsigned int num_slots;
+
+ /* num_elem == 0 is allowed, but uninteresting */
+ if (*num_elem < 0)
+ goto err1;
+
+ q = kmalloc(sizeof(*q), GFP_KERNEL);
+ if (!q)
+ goto err1;
+
+ q->rxe = rxe;
+
+ /* used in resize, only need to copy used part of queue */
+ q->elem_size = elem_size;
+
+ /* pad element up to at least a cacheline and always a power of 2 */
+ if (elem_size < cache_line_size())
+ elem_size = cache_line_size();
+ elem_size = roundup_pow_of_two(elem_size);
+
+ q->log2_elem_size = order_base_2(elem_size);
+
+ num_slots = *num_elem + 1;
+ num_slots = roundup_pow_of_two(num_slots);
+ q->index_mask = num_slots - 1;
+
+ buf_size = sizeof(struct rxe_queue_buf) + num_slots * elem_size;
+
+ q->buf = vmalloc_user(buf_size);
+ if (!q->buf)
+ goto err2;
+
+ q->buf->log2_elem_size = q->log2_elem_size;
+ q->buf->index_mask = q->index_mask;
+
+ q->buf_size = buf_size;
+
+ *num_elem = num_slots - 1;
+ return q;
+
+err2:
+ kfree(q);
+err1:
+ return NULL;
+}
+
+/* copies elements from original q to new q and then swaps the contents of the
+ * two q headers. This is so that if anyone is holding a pointer to q it will
+ * still work
+ */
+static int resize_finish(struct rxe_queue *q, struct rxe_queue *new_q,
+ unsigned int num_elem)
+{
+ if (!queue_empty(q) && (num_elem < queue_count(q)))
+ return -EINVAL;
+
+ while (!queue_empty(q)) {
+ memcpy(producer_addr(new_q), consumer_addr(q),
+ new_q->elem_size);
+ advance_producer(new_q);
+ advance_consumer(q);
+ }
+
+ swap(*q, *new_q);
+
+ return 0;
+}
+
+int rxe_queue_resize(struct rxe_queue *q,
+ unsigned int *num_elem_p,
+ unsigned int elem_size,
+ struct ib_ucontext *context,
+ struct ib_udata *udata,
+ spinlock_t *producer_lock,
+ spinlock_t *consumer_lock)
+{
+ struct rxe_queue *new_q;
+ unsigned int num_elem = *num_elem_p;
+ int err;
+ unsigned long flags = 0, flags1;
+
+ new_q = rxe_queue_init(q->rxe, &num_elem, elem_size);
+ if (!new_q)
+ return -ENOMEM;
+
+ err = do_mmap_info(new_q->rxe, udata, false, context, new_q->buf,
+ new_q->buf_size, &new_q->ip);
+ if (err) {
+ vfree(new_q->buf);
+ kfree(new_q);
+ goto err1;
+ }
+
+ spin_lock_irqsave(consumer_lock, flags1);
+
+ if (producer_lock) {
+ spin_lock_irqsave(producer_lock, flags);
+ err = resize_finish(q, new_q, num_elem);
+ spin_unlock_irqrestore(producer_lock, flags);
+ } else {
+ err = resize_finish(q, new_q, num_elem);
+ }
+
+ spin_unlock_irqrestore(consumer_lock, flags1);
+
+ rxe_queue_cleanup(new_q); /* new/old dep on err */
+ if (err)
+ goto err1;
+
+ *num_elem_p = num_elem;
+ return 0;
+
+err1:
+ return err;
+}
+
+void rxe_queue_cleanup(struct rxe_queue *q)
+{
+ if (q->ip)
+ kref_put(&q->ip->ref, rxe_mmap_release);
+ else
+ vfree(q->buf);
+
+ kfree(q);
+}
diff --git a/drivers/infiniband/sw/rxe/rxe_queue.h b/drivers/infiniband/sw/rxe/rxe_queue.h
new file mode 100644
index 000000000000..239fd609c31e
--- /dev/null
+++ b/drivers/infiniband/sw/rxe/rxe_queue.h
@@ -0,0 +1,178 @@
+/*
+ * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
+ * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef RXE_QUEUE_H
+#define RXE_QUEUE_H
+
+/* implements a simple circular buffer that can optionally be
+ * shared between user space and the kernel and can be resized
+
+ * the requested element size is rounded up to a power of 2
+ * and the number of elements in the buffer is also rounded
+ * up to a power of 2. Since the queue is empty when the
+ * producer and consumer indices match the maximum capacity
+ * of the queue is one less than the number of element slots
+ */
+
+/* this data structure is shared between user space and kernel
+ * space for those cases where the queue is shared. It contains
+ * the producer and consumer indices. Is also contains a copy
+ * of the queue size parameters for user space to use but the
+ * kernel must use the parameters in the rxe_queue struct
+ * this MUST MATCH the corresponding librxe struct
+ * for performance reasons arrange to have producer and consumer
+ * pointers in separate cache lines
+ * the kernel should always mask the indices to avoid accessing
+ * memory outside of the data area
+ */
+struct rxe_queue_buf {
+ __u32 log2_elem_size;
+ __u32 index_mask;
+ __u32 pad_1[30];
+ __u32 producer_index;
+ __u32 pad_2[31];
+ __u32 consumer_index;
+ __u32 pad_3[31];
+ __u8 data[0];
+};
+
+struct rxe_queue {
+ struct rxe_dev *rxe;
+ struct rxe_queue_buf *buf;
+ struct rxe_mmap_info *ip;
+ size_t buf_size;
+ size_t elem_size;
+ unsigned int log2_elem_size;
+ unsigned int index_mask;
+};
+
+int do_mmap_info(struct rxe_dev *rxe,
+ struct ib_udata *udata,
+ bool is_req,
+ struct ib_ucontext *context,
+ struct rxe_queue_buf *buf,
+ size_t buf_size,
+ struct rxe_mmap_info **ip_p);
+
+struct rxe_queue *rxe_queue_init(struct rxe_dev *rxe,
+ int *num_elem,
+ unsigned int elem_size);
+
+int rxe_queue_resize(struct rxe_queue *q,
+ unsigned int *num_elem_p,
+ unsigned int elem_size,
+ struct ib_ucontext *context,
+ struct ib_udata *udata,
+ /* Protect producers while resizing queue */
+ spinlock_t *producer_lock,
+ /* Protect consumers while resizing queue */
+ spinlock_t *consumer_lock);
+
+void rxe_queue_cleanup(struct rxe_queue *queue);
+
+static inline int next_index(struct rxe_queue *q, int index)
+{
+ return (index + 1) & q->buf->index_mask;
+}
+
+static inline int queue_empty(struct rxe_queue *q)
+{
+ return ((q->buf->producer_index - q->buf->consumer_index)
+ & q->index_mask) == 0;
+}
+
+static inline int queue_full(struct rxe_queue *q)
+{
+ return ((q->buf->producer_index + 1 - q->buf->consumer_index)
+ & q->index_mask) == 0;
+}
+
+static inline void advance_producer(struct rxe_queue *q)
+{
+ q->buf->producer_index = (q->buf->producer_index + 1)
+ & q->index_mask;
+}
+
+static inline void advance_consumer(struct rxe_queue *q)
+{
+ q->buf->consumer_index = (q->buf->consumer_index + 1)
+ & q->index_mask;
+}
+
+static inline void *producer_addr(struct rxe_queue *q)
+{
+ return q->buf->data + ((q->buf->producer_index & q->index_mask)
+ << q->log2_elem_size);
+}
+
+static inline void *consumer_addr(struct rxe_queue *q)
+{
+ return q->buf->data + ((q->buf->consumer_index & q->index_mask)
+ << q->log2_elem_size);
+}
+
+static inline unsigned int producer_index(struct rxe_queue *q)
+{
+ return q->buf->producer_index;
+}
+
+static inline unsigned int consumer_index(struct rxe_queue *q)
+{
+ return q->buf->consumer_index;
+}
+
+static inline void *addr_from_index(struct rxe_queue *q, unsigned int index)
+{
+ return q->buf->data + ((index & q->index_mask)
+ << q->buf->log2_elem_size);
+}
+
+static inline unsigned int index_from_addr(const struct rxe_queue *q,
+ const void *addr)
+{
+ return (((u8 *)addr - q->buf->data) >> q->log2_elem_size)
+ & q->index_mask;
+}
+
+static inline unsigned int queue_count(const struct rxe_queue *q)
+{
+ return (q->buf->producer_index - q->buf->consumer_index)
+ & q->index_mask;
+}
+
+static inline void *queue_head(struct rxe_queue *q)
+{
+ return queue_empty(q) ? NULL : consumer_addr(q);
+}
+
+#endif /* RXE_QUEUE_H */
diff --git a/drivers/infiniband/sw/rxe/rxe_recv.c b/drivers/infiniband/sw/rxe/rxe_recv.c
new file mode 100644
index 000000000000..3d464c23e08b
--- /dev/null
+++ b/drivers/infiniband/sw/rxe/rxe_recv.c
@@ -0,0 +1,420 @@
+/*
+ * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
+ * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/skbuff.h>
+
+#include "rxe.h"
+#include "rxe_loc.h"
+
+static int check_type_state(struct rxe_dev *rxe, struct rxe_pkt_info *pkt,
+ struct rxe_qp *qp)
+{
+ if (unlikely(!qp->valid))
+ goto err1;
+
+ switch (qp_type(qp)) {
+ case IB_QPT_RC:
+ if (unlikely((pkt->opcode & IB_OPCODE_RC) != 0)) {
+ pr_warn_ratelimited("bad qp type\n");
+ goto err1;
+ }
+ break;
+ case IB_QPT_UC:
+ if (unlikely(!(pkt->opcode & IB_OPCODE_UC))) {
+ pr_warn_ratelimited("bad qp type\n");
+ goto err1;
+ }
+ break;
+ case IB_QPT_UD:
+ case IB_QPT_SMI:
+ case IB_QPT_GSI:
+ if (unlikely(!(pkt->opcode & IB_OPCODE_UD))) {
+ pr_warn_ratelimited("bad qp type\n");
+ goto err1;
+ }
+ break;
+ default:
+ pr_warn_ratelimited("unsupported qp type\n");
+ goto err1;
+ }
+
+ if (pkt->mask & RXE_REQ_MASK) {
+ if (unlikely(qp->resp.state != QP_STATE_READY))
+ goto err1;
+ } else if (unlikely(qp->req.state < QP_STATE_READY ||
+ qp->req.state > QP_STATE_DRAINED)) {
+ goto err1;
+ }
+
+ return 0;
+
+err1:
+ return -EINVAL;
+}
+
+static void set_bad_pkey_cntr(struct rxe_port *port)
+{
+ spin_lock_bh(&port->port_lock);
+ port->attr.bad_pkey_cntr = min((u32)0xffff,
+ port->attr.bad_pkey_cntr + 1);
+ spin_unlock_bh(&port->port_lock);
+}
+
+static void set_qkey_viol_cntr(struct rxe_port *port)
+{
+ spin_lock_bh(&port->port_lock);
+ port->attr.qkey_viol_cntr = min((u32)0xffff,
+ port->attr.qkey_viol_cntr + 1);
+ spin_unlock_bh(&port->port_lock);
+}
+
+static int check_keys(struct rxe_dev *rxe, struct rxe_pkt_info *pkt,
+ u32 qpn, struct rxe_qp *qp)
+{
+ int i;
+ int found_pkey = 0;
+ struct rxe_port *port = &rxe->port;
+ u16 pkey = bth_pkey(pkt);
+
+ pkt->pkey_index = 0;
+
+ if (qpn == 1) {
+ for (i = 0; i < port->attr.pkey_tbl_len; i++) {
+ if (pkey_match(pkey, port->pkey_tbl[i])) {
+ pkt->pkey_index = i;
+ found_pkey = 1;
+ break;
+ }
+ }
+
+ if (!found_pkey) {
+ pr_warn_ratelimited("bad pkey = 0x%x\n", pkey);
+ set_bad_pkey_cntr(port);
+ goto err1;
+ }
+ } else if (qpn != 0) {
+ if (unlikely(!pkey_match(pkey,
+ port->pkey_tbl[qp->attr.pkey_index]
+ ))) {
+ pr_warn_ratelimited("bad pkey = 0x%0x\n", pkey);
+ set_bad_pkey_cntr(port);
+ goto err1;
+ }
+ pkt->pkey_index = qp->attr.pkey_index;
+ }
+
+ if ((qp_type(qp) == IB_QPT_UD || qp_type(qp) == IB_QPT_GSI) &&
+ qpn != 0 && pkt->mask) {
+ u32 qkey = (qpn == 1) ? GSI_QKEY : qp->attr.qkey;
+
+ if (unlikely(deth_qkey(pkt) != qkey)) {
+ pr_warn_ratelimited("bad qkey, got 0x%x expected 0x%x for qpn 0x%x\n",
+ deth_qkey(pkt), qkey, qpn);
+ set_qkey_viol_cntr(port);
+ goto err1;
+ }
+ }
+
+ return 0;
+
+err1:
+ return -EINVAL;
+}
+
+static int check_addr(struct rxe_dev *rxe, struct rxe_pkt_info *pkt,
+ struct rxe_qp *qp)
+{
+ struct sk_buff *skb = PKT_TO_SKB(pkt);
+
+ if (qp_type(qp) != IB_QPT_RC && qp_type(qp) != IB_QPT_UC)
+ goto done;
+
+ if (unlikely(pkt->port_num != qp->attr.port_num)) {
+ pr_warn_ratelimited("port %d != qp port %d\n",
+ pkt->port_num, qp->attr.port_num);
+ goto err1;
+ }
+
+ if (skb->protocol == htons(ETH_P_IP)) {
+ struct in_addr *saddr =
+ &qp->pri_av.sgid_addr._sockaddr_in.sin_addr;
+ struct in_addr *daddr =
+ &qp->pri_av.dgid_addr._sockaddr_in.sin_addr;
+
+ if (ip_hdr(skb)->daddr != saddr->s_addr) {
+ pr_warn_ratelimited("dst addr %pI4 != qp source addr %pI4\n",
+ &ip_hdr(skb)->daddr,
+ &saddr->s_addr);
+ goto err1;
+ }
+
+ if (ip_hdr(skb)->saddr != daddr->s_addr) {
+ pr_warn_ratelimited("source addr %pI4 != qp dst addr %pI4\n",
+ &ip_hdr(skb)->saddr,
+ &daddr->s_addr);
+ goto err1;
+ }
+
+ } else if (skb->protocol == htons(ETH_P_IPV6)) {
+ struct in6_addr *saddr =
+ &qp->pri_av.sgid_addr._sockaddr_in6.sin6_addr;
+ struct in6_addr *daddr =
+ &qp->pri_av.dgid_addr._sockaddr_in6.sin6_addr;
+
+ if (memcmp(&ipv6_hdr(skb)->daddr, saddr, sizeof(*saddr))) {
+ pr_warn_ratelimited("dst addr %pI6 != qp source addr %pI6\n",
+ &ipv6_hdr(skb)->daddr, saddr);
+ goto err1;
+ }
+
+ if (memcmp(&ipv6_hdr(skb)->saddr, daddr, sizeof(*daddr))) {
+ pr_warn_ratelimited("source addr %pI6 != qp dst addr %pI6\n",
+ &ipv6_hdr(skb)->saddr, daddr);
+ goto err1;
+ }
+ }
+
+done:
+ return 0;
+
+err1:
+ return -EINVAL;
+}
+
+static int hdr_check(struct rxe_pkt_info *pkt)
+{
+ struct rxe_dev *rxe = pkt->rxe;
+ struct rxe_port *port = &rxe->port;
+ struct rxe_qp *qp = NULL;
+ u32 qpn = bth_qpn(pkt);
+ int index;
+ int err;
+
+ if (unlikely(bth_tver(pkt) != BTH_TVER)) {
+ pr_warn_ratelimited("bad tver\n");
+ goto err1;
+ }
+
+ if (qpn != IB_MULTICAST_QPN) {
+ index = (qpn == 0) ? port->qp_smi_index :
+ ((qpn == 1) ? port->qp_gsi_index : qpn);
+ qp = rxe_pool_get_index(&rxe->qp_pool, index);
+ if (unlikely(!qp)) {
+ pr_warn_ratelimited("no qp matches qpn 0x%x\n", qpn);
+ goto err1;
+ }
+
+ err = check_type_state(rxe, pkt, qp);
+ if (unlikely(err))
+ goto err2;
+
+ err = check_addr(rxe, pkt, qp);
+ if (unlikely(err))
+ goto err2;
+
+ err = check_keys(rxe, pkt, qpn, qp);
+ if (unlikely(err))
+ goto err2;
+ } else {
+ if (unlikely((pkt->mask & RXE_GRH_MASK) == 0)) {
+ pr_warn_ratelimited("no grh for mcast qpn\n");
+ goto err1;
+ }
+ }
+
+ pkt->qp = qp;
+ return 0;
+
+err2:
+ if (qp)
+ rxe_drop_ref(qp);
+err1:
+ return -EINVAL;
+}
+
+static inline void rxe_rcv_pkt(struct rxe_dev *rxe,
+ struct rxe_pkt_info *pkt,
+ struct sk_buff *skb)
+{
+ if (pkt->mask & RXE_REQ_MASK)
+ rxe_resp_queue_pkt(rxe, pkt->qp, skb);
+ else
+ rxe_comp_queue_pkt(rxe, pkt->qp, skb);
+}
+
+static void rxe_rcv_mcast_pkt(struct rxe_dev *rxe, struct sk_buff *skb)
+{
+ struct rxe_pkt_info *pkt = SKB_TO_PKT(skb);
+ struct rxe_mc_grp *mcg;
+ struct sk_buff *skb_copy;
+ struct rxe_mc_elem *mce;
+ struct rxe_qp *qp;
+ union ib_gid dgid;
+ int err;
+
+ if (skb->protocol == htons(ETH_P_IP))
+ ipv6_addr_set_v4mapped(ip_hdr(skb)->daddr,
+ (struct in6_addr *)&dgid);
+ else if (skb->protocol == htons(ETH_P_IPV6))
+ memcpy(&dgid, &ipv6_hdr(skb)->daddr, sizeof(dgid));
+
+ /* lookup mcast group corresponding to mgid, takes a ref */
+ mcg = rxe_pool_get_key(&rxe->mc_grp_pool, &dgid);
+ if (!mcg)
+ goto err1; /* mcast group not registered */
+
+ spin_lock_bh(&mcg->mcg_lock);
+
+ list_for_each_entry(mce, &mcg->qp_list, qp_list) {
+ qp = mce->qp;
+ pkt = SKB_TO_PKT(skb);
+
+ /* validate qp for incoming packet */
+ err = check_type_state(rxe, pkt, qp);
+ if (err)
+ continue;
+
+ err = check_keys(rxe, pkt, bth_qpn(pkt), qp);
+ if (err)
+ continue;
+
+ /* if *not* the last qp in the list
+ * make a copy of the skb to post to the next qp
+ */
+ skb_copy = (mce->qp_list.next != &mcg->qp_list) ?
+ skb_clone(skb, GFP_KERNEL) : NULL;
+
+ pkt->qp = qp;
+ rxe_add_ref(qp);
+ rxe_rcv_pkt(rxe, pkt, skb);
+
+ skb = skb_copy;
+ if (!skb)
+ break;
+ }
+
+ spin_unlock_bh(&mcg->mcg_lock);
+
+ rxe_drop_ref(mcg); /* drop ref from rxe_pool_get_key. */
+
+err1:
+ if (skb)
+ kfree_skb(skb);
+}
+
+static int rxe_match_dgid(struct rxe_dev *rxe, struct sk_buff *skb)
+{
+ union ib_gid dgid;
+ union ib_gid *pdgid;
+ u16 index;
+
+ if (skb->protocol == htons(ETH_P_IP)) {
+ ipv6_addr_set_v4mapped(ip_hdr(skb)->daddr,
+ (struct in6_addr *)&dgid);
+ pdgid = &dgid;
+ } else {
+ pdgid = (union ib_gid *)&ipv6_hdr(skb)->daddr;
+ }
+
+ return ib_find_cached_gid_by_port(&rxe->ib_dev, pdgid,
+ IB_GID_TYPE_ROCE_UDP_ENCAP,
+ 1, rxe->ndev, &index);
+}
+
+/* rxe_rcv is called from the interface driver */
+int rxe_rcv(struct sk_buff *skb)
+{
+ int err;
+ struct rxe_pkt_info *pkt = SKB_TO_PKT(skb);
+ struct rxe_dev *rxe = pkt->rxe;
+ __be32 *icrcp;
+ u32 calc_icrc, pack_icrc;
+
+ pkt->offset = 0;
+
+ if (unlikely(skb->len < pkt->offset + RXE_BTH_BYTES))
+ goto drop;
+
+ if (unlikely(rxe_match_dgid(rxe, skb) < 0)) {
+ pr_warn_ratelimited("failed matching dgid\n");
+ goto drop;
+ }
+
+ pkt->opcode = bth_opcode(pkt);
+ pkt->psn = bth_psn(pkt);
+ pkt->qp = NULL;
+ pkt->mask |= rxe_opcode[pkt->opcode].mask;
+
+ if (unlikely(skb->len < header_size(pkt)))
+ goto drop;
+
+ err = hdr_check(pkt);
+ if (unlikely(err))
+ goto drop;
+
+ /* Verify ICRC */
+ icrcp = (__be32 *)(pkt->hdr + pkt->paylen - RXE_ICRC_SIZE);
+ pack_icrc = be32_to_cpu(*icrcp);
+
+ calc_icrc = rxe_icrc_hdr(pkt, skb);
+ calc_icrc = crc32_le(calc_icrc, (u8 *)payload_addr(pkt), payload_size(pkt));
+ calc_icrc = cpu_to_be32(~calc_icrc);
+ if (unlikely(calc_icrc != pack_icrc)) {
+ char saddr[sizeof(struct in6_addr)];
+
+ if (skb->protocol == htons(ETH_P_IPV6))
+ sprintf(saddr, "%pI6", &ipv6_hdr(skb)->saddr);
+ else if (skb->protocol == htons(ETH_P_IP))
+ sprintf(saddr, "%pI4", &ip_hdr(skb)->saddr);
+ else
+ sprintf(saddr, "unknown");
+
+ pr_warn_ratelimited("bad ICRC from %s\n", saddr);
+ goto drop;
+ }
+
+ if (unlikely(bth_qpn(pkt) == IB_MULTICAST_QPN))
+ rxe_rcv_mcast_pkt(rxe, skb);
+ else
+ rxe_rcv_pkt(rxe, pkt, skb);
+
+ return 0;
+
+drop:
+ if (pkt->qp)
+ rxe_drop_ref(pkt->qp);
+
+ kfree_skb(skb);
+ return 0;
+}
+EXPORT_SYMBOL(rxe_rcv);
diff --git a/drivers/infiniband/sw/rxe/rxe_req.c b/drivers/infiniband/sw/rxe/rxe_req.c
new file mode 100644
index 000000000000..33b2d9d77021
--- /dev/null
+++ b/drivers/infiniband/sw/rxe/rxe_req.c
@@ -0,0 +1,726 @@
+/*
+ * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
+ * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/skbuff.h>
+
+#include "rxe.h"
+#include "rxe_loc.h"
+#include "rxe_queue.h"
+
+static int next_opcode(struct rxe_qp *qp, struct rxe_send_wqe *wqe,
+ unsigned opcode);
+
+static inline void retry_first_write_send(struct rxe_qp *qp,
+ struct rxe_send_wqe *wqe,
+ unsigned mask, int npsn)
+{
+ int i;
+
+ for (i = 0; i < npsn; i++) {
+ int to_send = (wqe->dma.resid > qp->mtu) ?
+ qp->mtu : wqe->dma.resid;
+
+ qp->req.opcode = next_opcode(qp, wqe,
+ wqe->wr.opcode);
+
+ if (wqe->wr.send_flags & IB_SEND_INLINE) {
+ wqe->dma.resid -= to_send;
+ wqe->dma.sge_offset += to_send;
+ } else {
+ advance_dma_data(&wqe->dma, to_send);
+ }
+ if (mask & WR_WRITE_MASK)
+ wqe->iova += qp->mtu;
+ }
+}
+
+static void req_retry(struct rxe_qp *qp)
+{
+ struct rxe_send_wqe *wqe;
+ unsigned int wqe_index;
+ unsigned int mask;
+ int npsn;
+ int first = 1;
+
+ wqe = queue_head(qp->sq.queue);
+ npsn = (qp->comp.psn - wqe->first_psn) & BTH_PSN_MASK;
+
+ qp->req.wqe_index = consumer_index(qp->sq.queue);
+ qp->req.psn = qp->comp.psn;
+ qp->req.opcode = -1;
+
+ for (wqe_index = consumer_index(qp->sq.queue);
+ wqe_index != producer_index(qp->sq.queue);
+ wqe_index = next_index(qp->sq.queue, wqe_index)) {
+ wqe = addr_from_index(qp->sq.queue, wqe_index);
+ mask = wr_opcode_mask(wqe->wr.opcode, qp);
+
+ if (wqe->state == wqe_state_posted)
+ break;
+
+ if (wqe->state == wqe_state_done)
+ continue;
+
+ wqe->iova = (mask & WR_ATOMIC_MASK) ?
+ wqe->wr.wr.atomic.remote_addr :
+ (mask & WR_READ_OR_WRITE_MASK) ?
+ wqe->wr.wr.rdma.remote_addr :
+ 0;
+
+ if (!first || (mask & WR_READ_MASK) == 0) {
+ wqe->dma.resid = wqe->dma.length;
+ wqe->dma.cur_sge = 0;
+ wqe->dma.sge_offset = 0;
+ }
+
+ if (first) {
+ first = 0;
+
+ if (mask & WR_WRITE_OR_SEND_MASK)
+ retry_first_write_send(qp, wqe, mask, npsn);
+
+ if (mask & WR_READ_MASK)
+ wqe->iova += npsn * qp->mtu;
+ }
+
+ wqe->state = wqe_state_posted;
+ }
+}
+
+void rnr_nak_timer(unsigned long data)
+{
+ struct rxe_qp *qp = (struct rxe_qp *)data;
+
+ pr_debug("rnr nak timer fired\n");
+ rxe_run_task(&qp->req.task, 1);
+}
+
+static struct rxe_send_wqe *req_next_wqe(struct rxe_qp *qp)
+{
+ struct rxe_send_wqe *wqe = queue_head(qp->sq.queue);
+ unsigned long flags;
+
+ if (unlikely(qp->req.state == QP_STATE_DRAIN)) {
+ /* check to see if we are drained;
+ * state_lock used by requester and completer
+ */
+ spin_lock_irqsave(&qp->state_lock, flags);
+ do {
+ if (qp->req.state != QP_STATE_DRAIN) {
+ /* comp just finished */
+ spin_unlock_irqrestore(&qp->state_lock,
+ flags);
+ break;
+ }
+
+ if (wqe && ((qp->req.wqe_index !=
+ consumer_index(qp->sq.queue)) ||
+ (wqe->state != wqe_state_posted))) {
+ /* comp not done yet */
+ spin_unlock_irqrestore(&qp->state_lock,
+ flags);
+ break;
+ }
+
+ qp->req.state = QP_STATE_DRAINED;
+ spin_unlock_irqrestore(&qp->state_lock, flags);
+
+ if (qp->ibqp.event_handler) {
+ struct ib_event ev;
+
+ ev.device = qp->ibqp.device;
+ ev.element.qp = &qp->ibqp;
+ ev.event = IB_EVENT_SQ_DRAINED;
+ qp->ibqp.event_handler(&ev,
+ qp->ibqp.qp_context);
+ }
+ } while (0);
+ }
+
+ if (qp->req.wqe_index == producer_index(qp->sq.queue))
+ return NULL;
+
+ wqe = addr_from_index(qp->sq.queue, qp->req.wqe_index);
+
+ if (unlikely((qp->req.state == QP_STATE_DRAIN ||
+ qp->req.state == QP_STATE_DRAINED) &&
+ (wqe->state != wqe_state_processing)))
+ return NULL;
+
+ if (unlikely((wqe->wr.send_flags & IB_SEND_FENCE) &&
+ (qp->req.wqe_index != consumer_index(qp->sq.queue)))) {
+ qp->req.wait_fence = 1;
+ return NULL;
+ }
+
+ wqe->mask = wr_opcode_mask(wqe->wr.opcode, qp);
+ return wqe;
+}
+
+static int next_opcode_rc(struct rxe_qp *qp, unsigned opcode, int fits)
+{
+ switch (opcode) {
+ case IB_WR_RDMA_WRITE:
+ if (qp->req.opcode == IB_OPCODE_RC_RDMA_WRITE_FIRST ||
+ qp->req.opcode == IB_OPCODE_RC_RDMA_WRITE_MIDDLE)
+ return fits ?
+ IB_OPCODE_RC_RDMA_WRITE_LAST :
+ IB_OPCODE_RC_RDMA_WRITE_MIDDLE;
+ else
+ return fits ?
+ IB_OPCODE_RC_RDMA_WRITE_ONLY :
+ IB_OPCODE_RC_RDMA_WRITE_FIRST;
+
+ case IB_WR_RDMA_WRITE_WITH_IMM:
+ if (qp->req.opcode == IB_OPCODE_RC_RDMA_WRITE_FIRST ||
+ qp->req.opcode == IB_OPCODE_RC_RDMA_WRITE_MIDDLE)
+ return fits ?
+ IB_OPCODE_RC_RDMA_WRITE_LAST_WITH_IMMEDIATE :
+ IB_OPCODE_RC_RDMA_WRITE_MIDDLE;
+ else
+ return fits ?
+ IB_OPCODE_RC_RDMA_WRITE_ONLY_WITH_IMMEDIATE :
+ IB_OPCODE_RC_RDMA_WRITE_FIRST;
+
+ case IB_WR_SEND:
+ if (qp->req.opcode == IB_OPCODE_RC_SEND_FIRST ||
+ qp->req.opcode == IB_OPCODE_RC_SEND_MIDDLE)
+ return fits ?
+ IB_OPCODE_RC_SEND_LAST :
+ IB_OPCODE_RC_SEND_MIDDLE;
+ else
+ return fits ?
+ IB_OPCODE_RC_SEND_ONLY :
+ IB_OPCODE_RC_SEND_FIRST;
+
+ case IB_WR_SEND_WITH_IMM:
+ if (qp->req.opcode == IB_OPCODE_RC_SEND_FIRST ||
+ qp->req.opcode == IB_OPCODE_RC_SEND_MIDDLE)
+ return fits ?
+ IB_OPCODE_RC_SEND_LAST_WITH_IMMEDIATE :
+ IB_OPCODE_RC_SEND_MIDDLE;
+ else
+ return fits ?
+ IB_OPCODE_RC_SEND_ONLY_WITH_IMMEDIATE :
+ IB_OPCODE_RC_SEND_FIRST;
+
+ case IB_WR_RDMA_READ:
+ return IB_OPCODE_RC_RDMA_READ_REQUEST;
+
+ case IB_WR_ATOMIC_CMP_AND_SWP:
+ return IB_OPCODE_RC_COMPARE_SWAP;
+
+ case IB_WR_ATOMIC_FETCH_AND_ADD:
+ return IB_OPCODE_RC_FETCH_ADD;
+
+ case IB_WR_SEND_WITH_INV:
+ if (qp->req.opcode == IB_OPCODE_RC_SEND_FIRST ||
+ qp->req.opcode == IB_OPCODE_RC_SEND_MIDDLE)
+ return fits ? IB_OPCODE_RC_SEND_LAST_WITH_INVALIDATE :
+ IB_OPCODE_RC_SEND_MIDDLE;
+ else
+ return fits ? IB_OPCODE_RC_SEND_ONLY_WITH_INVALIDATE :
+ IB_OPCODE_RC_SEND_FIRST;
+ case IB_WR_REG_MR:
+ case IB_WR_LOCAL_INV:
+ return opcode;
+ }
+
+ return -EINVAL;
+}
+
+static int next_opcode_uc(struct rxe_qp *qp, unsigned opcode, int fits)
+{
+ switch (opcode) {
+ case IB_WR_RDMA_WRITE:
+ if (qp->req.opcode == IB_OPCODE_UC_RDMA_WRITE_FIRST ||
+ qp->req.opcode == IB_OPCODE_UC_RDMA_WRITE_MIDDLE)
+ return fits ?
+ IB_OPCODE_UC_RDMA_WRITE_LAST :
+ IB_OPCODE_UC_RDMA_WRITE_MIDDLE;
+ else
+ return fits ?
+ IB_OPCODE_UC_RDMA_WRITE_ONLY :
+ IB_OPCODE_UC_RDMA_WRITE_FIRST;
+
+ case IB_WR_RDMA_WRITE_WITH_IMM:
+ if (qp->req.opcode == IB_OPCODE_UC_RDMA_WRITE_FIRST ||
+ qp->req.opcode == IB_OPCODE_UC_RDMA_WRITE_MIDDLE)
+ return fits ?
+ IB_OPCODE_UC_RDMA_WRITE_LAST_WITH_IMMEDIATE :
+ IB_OPCODE_UC_RDMA_WRITE_MIDDLE;
+ else
+ return fits ?
+ IB_OPCODE_UC_RDMA_WRITE_ONLY_WITH_IMMEDIATE :
+ IB_OPCODE_UC_RDMA_WRITE_FIRST;
+
+ case IB_WR_SEND:
+ if (qp->req.opcode == IB_OPCODE_UC_SEND_FIRST ||
+ qp->req.opcode == IB_OPCODE_UC_SEND_MIDDLE)
+ return fits ?
+ IB_OPCODE_UC_SEND_LAST :
+ IB_OPCODE_UC_SEND_MIDDLE;
+ else
+ return fits ?
+ IB_OPCODE_UC_SEND_ONLY :
+ IB_OPCODE_UC_SEND_FIRST;
+
+ case IB_WR_SEND_WITH_IMM:
+ if (qp->req.opcode == IB_OPCODE_UC_SEND_FIRST ||
+ qp->req.opcode == IB_OPCODE_UC_SEND_MIDDLE)
+ return fits ?
+ IB_OPCODE_UC_SEND_LAST_WITH_IMMEDIATE :
+ IB_OPCODE_UC_SEND_MIDDLE;
+ else
+ return fits ?
+ IB_OPCODE_UC_SEND_ONLY_WITH_IMMEDIATE :
+ IB_OPCODE_UC_SEND_FIRST;
+ }
+
+ return -EINVAL;
+}
+
+static int next_opcode(struct rxe_qp *qp, struct rxe_send_wqe *wqe,
+ unsigned opcode)
+{
+ int fits = (wqe->dma.resid <= qp->mtu);
+
+ switch (qp_type(qp)) {
+ case IB_QPT_RC:
+ return next_opcode_rc(qp, opcode, fits);
+
+ case IB_QPT_UC:
+ return next_opcode_uc(qp, opcode, fits);
+
+ case IB_QPT_SMI:
+ case IB_QPT_UD:
+ case IB_QPT_GSI:
+ switch (opcode) {
+ case IB_WR_SEND:
+ return IB_OPCODE_UD_SEND_ONLY;
+
+ case IB_WR_SEND_WITH_IMM:
+ return IB_OPCODE_UD_SEND_ONLY_WITH_IMMEDIATE;
+ }
+ break;
+
+ default:
+ break;
+ }
+
+ return -EINVAL;
+}
+
+static inline int check_init_depth(struct rxe_qp *qp, struct rxe_send_wqe *wqe)
+{
+ int depth;
+
+ if (wqe->has_rd_atomic)
+ return 0;
+
+ qp->req.need_rd_atomic = 1;
+ depth = atomic_dec_return(&qp->req.rd_atomic);
+
+ if (depth >= 0) {
+ qp->req.need_rd_atomic = 0;
+ wqe->has_rd_atomic = 1;
+ return 0;
+ }
+
+ atomic_inc(&qp->req.rd_atomic);
+ return -EAGAIN;
+}
+
+static inline int get_mtu(struct rxe_qp *qp, struct rxe_send_wqe *wqe)
+{
+ struct rxe_dev *rxe = to_rdev(qp->ibqp.device);
+ struct rxe_port *port;
+ struct rxe_av *av;
+
+ if ((qp_type(qp) == IB_QPT_RC) || (qp_type(qp) == IB_QPT_UC))
+ return qp->mtu;
+
+ av = &wqe->av;
+ port = &rxe->port;
+
+ return port->mtu_cap;
+}
+
+static struct sk_buff *init_req_packet(struct rxe_qp *qp,
+ struct rxe_send_wqe *wqe,
+ int opcode, int payload,
+ struct rxe_pkt_info *pkt)
+{
+ struct rxe_dev *rxe = to_rdev(qp->ibqp.device);
+ struct rxe_port *port = &rxe->port;
+ struct sk_buff *skb;
+ struct rxe_send_wr *ibwr = &wqe->wr;
+ struct rxe_av *av;
+ int pad = (-payload) & 0x3;
+ int paylen;
+ int solicited;
+ u16 pkey;
+ u32 qp_num;
+ int ack_req;
+
+ /* length from start of bth to end of icrc */
+ paylen = rxe_opcode[opcode].length + payload + pad + RXE_ICRC_SIZE;
+
+ /* pkt->hdr, rxe, port_num and mask are initialized in ifc
+ * layer
+ */
+ pkt->opcode = opcode;
+ pkt->qp = qp;
+ pkt->psn = qp->req.psn;
+ pkt->mask = rxe_opcode[opcode].mask;
+ pkt->paylen = paylen;
+ pkt->offset = 0;
+ pkt->wqe = wqe;
+
+ /* init skb */
+ av = rxe_get_av(pkt);
+ skb = rxe->ifc_ops->init_packet(rxe, av, paylen, pkt);
+ if (unlikely(!skb))
+ return NULL;
+
+ /* init bth */
+ solicited = (ibwr->send_flags & IB_SEND_SOLICITED) &&
+ (pkt->mask & RXE_END_MASK) &&
+ ((pkt->mask & (RXE_SEND_MASK)) ||
+ (pkt->mask & (RXE_WRITE_MASK | RXE_IMMDT_MASK)) ==
+ (RXE_WRITE_MASK | RXE_IMMDT_MASK));
+
+ pkey = (qp_type(qp) == IB_QPT_GSI) ?
+ port->pkey_tbl[ibwr->wr.ud.pkey_index] :
+ port->pkey_tbl[qp->attr.pkey_index];
+
+ qp_num = (pkt->mask & RXE_DETH_MASK) ? ibwr->wr.ud.remote_qpn :
+ qp->attr.dest_qp_num;
+
+ ack_req = ((pkt->mask & RXE_END_MASK) ||
+ (qp->req.noack_pkts++ > RXE_MAX_PKT_PER_ACK));
+ if (ack_req)
+ qp->req.noack_pkts = 0;
+
+ bth_init(pkt, pkt->opcode, solicited, 0, pad, pkey, qp_num,
+ ack_req, pkt->psn);
+
+ /* init optional headers */
+ if (pkt->mask & RXE_RETH_MASK) {
+ reth_set_rkey(pkt, ibwr->wr.rdma.rkey);
+ reth_set_va(pkt, wqe->iova);
+ reth_set_len(pkt, wqe->dma.length);
+ }
+
+ if (pkt->mask & RXE_IMMDT_MASK)
+ immdt_set_imm(pkt, ibwr->ex.imm_data);
+
+ if (pkt->mask & RXE_IETH_MASK)
+ ieth_set_rkey(pkt, ibwr->ex.invalidate_rkey);
+
+ if (pkt->mask & RXE_ATMETH_MASK) {
+ atmeth_set_va(pkt, wqe->iova);
+ if (opcode == IB_OPCODE_RC_COMPARE_SWAP ||
+ opcode == IB_OPCODE_RD_COMPARE_SWAP) {
+ atmeth_set_swap_add(pkt, ibwr->wr.atomic.swap);
+ atmeth_set_comp(pkt, ibwr->wr.atomic.compare_add);
+ } else {
+ atmeth_set_swap_add(pkt, ibwr->wr.atomic.compare_add);
+ }
+ atmeth_set_rkey(pkt, ibwr->wr.atomic.rkey);
+ }
+
+ if (pkt->mask & RXE_DETH_MASK) {
+ if (qp->ibqp.qp_num == 1)
+ deth_set_qkey(pkt, GSI_QKEY);
+ else
+ deth_set_qkey(pkt, ibwr->wr.ud.remote_qkey);
+ deth_set_sqp(pkt, qp->ibqp.qp_num);
+ }
+
+ return skb;
+}
+
+static int fill_packet(struct rxe_qp *qp, struct rxe_send_wqe *wqe,
+ struct rxe_pkt_info *pkt, struct sk_buff *skb,
+ int paylen)
+{
+ struct rxe_dev *rxe = to_rdev(qp->ibqp.device);
+ u32 crc = 0;
+ u32 *p;
+ int err;
+
+ err = rxe->ifc_ops->prepare(rxe, pkt, skb, &crc);
+ if (err)
+ return err;
+
+ if (pkt->mask & RXE_WRITE_OR_SEND) {
+ if (wqe->wr.send_flags & IB_SEND_INLINE) {
+ u8 *tmp = &wqe->dma.inline_data[wqe->dma.sge_offset];
+
+ crc = crc32_le(crc, tmp, paylen);
+
+ memcpy(payload_addr(pkt), tmp, paylen);
+
+ wqe->dma.resid -= paylen;
+ wqe->dma.sge_offset += paylen;
+ } else {
+ err = copy_data(rxe, qp->pd, 0, &wqe->dma,
+ payload_addr(pkt), paylen,
+ from_mem_obj,
+ &crc);
+ if (err)
+ return err;
+ }
+ }
+ p = payload_addr(pkt) + paylen + bth_pad(pkt);
+
+ *p = ~crc;
+
+ return 0;
+}
+
+static void update_wqe_state(struct rxe_qp *qp,
+ struct rxe_send_wqe *wqe,
+ struct rxe_pkt_info *pkt,
+ enum wqe_state *prev_state)
+{
+ enum wqe_state prev_state_ = wqe->state;
+
+ if (pkt->mask & RXE_END_MASK) {
+ if (qp_type(qp) == IB_QPT_RC)
+ wqe->state = wqe_state_pending;
+ } else {
+ wqe->state = wqe_state_processing;
+ }
+
+ *prev_state = prev_state_;
+}
+
+static void update_state(struct rxe_qp *qp, struct rxe_send_wqe *wqe,
+ struct rxe_pkt_info *pkt, int payload)
+{
+ /* number of packets left to send including current one */
+ int num_pkt = (wqe->dma.resid + payload + qp->mtu - 1) / qp->mtu;
+
+ /* handle zero length packet case */
+ if (num_pkt == 0)
+ num_pkt = 1;
+
+ if (pkt->mask & RXE_START_MASK) {
+ wqe->first_psn = qp->req.psn;
+ wqe->last_psn = (qp->req.psn + num_pkt - 1) & BTH_PSN_MASK;
+ }
+
+ if (pkt->mask & RXE_READ_MASK)
+ qp->req.psn = (wqe->first_psn + num_pkt) & BTH_PSN_MASK;
+ else
+ qp->req.psn = (qp->req.psn + 1) & BTH_PSN_MASK;
+
+ qp->req.opcode = pkt->opcode;
+
+
+ if (pkt->mask & RXE_END_MASK)
+ qp->req.wqe_index = next_index(qp->sq.queue, qp->req.wqe_index);
+
+ qp->need_req_skb = 0;
+
+ if (qp->qp_timeout_jiffies && !timer_pending(&qp->retrans_timer))
+ mod_timer(&qp->retrans_timer,
+ jiffies + qp->qp_timeout_jiffies);
+}
+
+int rxe_requester(void *arg)
+{
+ struct rxe_qp *qp = (struct rxe_qp *)arg;
+ struct rxe_pkt_info pkt;
+ struct sk_buff *skb;
+ struct rxe_send_wqe *wqe;
+ unsigned mask;
+ int payload;
+ int mtu;
+ int opcode;
+ int ret;
+ enum wqe_state prev_state;
+
+next_wqe:
+ if (unlikely(!qp->valid || qp->req.state == QP_STATE_ERROR))
+ goto exit;
+
+ if (unlikely(qp->req.state == QP_STATE_RESET)) {
+ qp->req.wqe_index = consumer_index(qp->sq.queue);
+ qp->req.opcode = -1;
+ qp->req.need_rd_atomic = 0;
+ qp->req.wait_psn = 0;
+ qp->req.need_retry = 0;
+ goto exit;
+ }
+
+ if (unlikely(qp->req.need_retry)) {
+ req_retry(qp);
+ qp->req.need_retry = 0;
+ }
+
+ wqe = req_next_wqe(qp);
+ if (unlikely(!wqe))
+ goto exit;
+
+ if (wqe->mask & WR_REG_MASK) {
+ if (wqe->wr.opcode == IB_WR_LOCAL_INV) {
+ struct rxe_dev *rxe = to_rdev(qp->ibqp.device);
+ struct rxe_mem *rmr;
+
+ rmr = rxe_pool_get_index(&rxe->mr_pool,
+ wqe->wr.ex.invalidate_rkey >> 8);
+ if (!rmr) {
+ pr_err("No mr for key %#x\n", wqe->wr.ex.invalidate_rkey);
+ wqe->state = wqe_state_error;
+ wqe->status = IB_WC_MW_BIND_ERR;
+ goto exit;
+ }
+ rmr->state = RXE_MEM_STATE_FREE;
+ wqe->state = wqe_state_done;
+ wqe->status = IB_WC_SUCCESS;
+ } else if (wqe->wr.opcode == IB_WR_REG_MR) {
+ struct rxe_mem *rmr = to_rmr(wqe->wr.wr.reg.mr);
+
+ rmr->state = RXE_MEM_STATE_VALID;
+ rmr->access = wqe->wr.wr.reg.access;
+ rmr->lkey = wqe->wr.wr.reg.key;
+ rmr->rkey = wqe->wr.wr.reg.key;
+ wqe->state = wqe_state_done;
+ wqe->status = IB_WC_SUCCESS;
+ } else {
+ goto exit;
+ }
+ qp->req.wqe_index = next_index(qp->sq.queue,
+ qp->req.wqe_index);
+ goto next_wqe;
+ }
+
+ if (unlikely(qp_type(qp) == IB_QPT_RC &&
+ qp->req.psn > (qp->comp.psn + RXE_MAX_UNACKED_PSNS))) {
+ qp->req.wait_psn = 1;
+ goto exit;
+ }
+
+ /* Limit the number of inflight SKBs per QP */
+ if (unlikely(atomic_read(&qp->skb_out) >
+ RXE_INFLIGHT_SKBS_PER_QP_HIGH)) {
+ qp->need_req_skb = 1;
+ goto exit;
+ }
+
+ opcode = next_opcode(qp, wqe, wqe->wr.opcode);
+ if (unlikely(opcode < 0)) {
+ wqe->status = IB_WC_LOC_QP_OP_ERR;
+ goto exit;
+ }
+
+ mask = rxe_opcode[opcode].mask;
+ if (unlikely(mask & RXE_READ_OR_ATOMIC)) {
+ if (check_init_depth(qp, wqe))
+ goto exit;
+ }
+
+ mtu = get_mtu(qp, wqe);
+ payload = (mask & RXE_WRITE_OR_SEND) ? wqe->dma.resid : 0;
+ if (payload > mtu) {
+ if (qp_type(qp) == IB_QPT_UD) {
+ /* C10-93.1.1: If the total sum of all the buffer lengths specified for a
+ * UD message exceeds the MTU of the port as returned by QueryHCA, the CI
+ * shall not emit any packets for this message. Further, the CI shall not
+ * generate an error due to this condition.
+ */
+
+ /* fake a successful UD send */
+ wqe->first_psn = qp->req.psn;
+ wqe->last_psn = qp->req.psn;
+ qp->req.psn = (qp->req.psn + 1) & BTH_PSN_MASK;
+ qp->req.opcode = IB_OPCODE_UD_SEND_ONLY;
+ qp->req.wqe_index = next_index(qp->sq.queue,
+ qp->req.wqe_index);
+ wqe->state = wqe_state_done;
+ wqe->status = IB_WC_SUCCESS;
+ goto complete;
+ }
+ payload = mtu;
+ }
+
+ skb = init_req_packet(qp, wqe, opcode, payload, &pkt);
+ if (unlikely(!skb)) {
+ pr_err("Failed allocating skb\n");
+ goto err;
+ }
+
+ if (fill_packet(qp, wqe, &pkt, skb, payload)) {
+ pr_debug("Error during fill packet\n");
+ goto err;
+ }
+
+ update_wqe_state(qp, wqe, &pkt, &prev_state);
+ ret = rxe_xmit_packet(to_rdev(qp->ibqp.device), qp, &pkt, skb);
+ if (ret) {
+ qp->need_req_skb = 1;
+ kfree_skb(skb);
+
+ wqe->state = prev_state;
+
+ if (ret == -EAGAIN) {
+ rxe_run_task(&qp->req.task, 1);
+ goto exit;
+ }
+
+ goto err;
+ }
+
+ update_state(qp, wqe, &pkt, payload);
+
+ goto next_wqe;
+
+err:
+ kfree_skb(skb);
+ wqe->status = IB_WC_LOC_PROT_ERR;
+ wqe->state = wqe_state_error;
+
+complete:
+ if (qp_type(qp) != IB_QPT_RC) {
+ while (rxe_completer(qp) == 0)
+ ;
+ }
+
+ return 0;
+
+exit:
+ return -EAGAIN;
+}
diff --git a/drivers/infiniband/sw/rxe/rxe_resp.c b/drivers/infiniband/sw/rxe/rxe_resp.c
new file mode 100644
index 000000000000..ebb03b46e2ad
--- /dev/null
+++ b/drivers/infiniband/sw/rxe/rxe_resp.c
@@ -0,0 +1,1380 @@
+/*
+ * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
+ * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/skbuff.h>
+
+#include "rxe.h"
+#include "rxe_loc.h"
+#include "rxe_queue.h"
+
+enum resp_states {
+ RESPST_NONE,
+ RESPST_GET_REQ,
+ RESPST_CHK_PSN,
+ RESPST_CHK_OP_SEQ,
+ RESPST_CHK_OP_VALID,
+ RESPST_CHK_RESOURCE,
+ RESPST_CHK_LENGTH,
+ RESPST_CHK_RKEY,
+ RESPST_EXECUTE,
+ RESPST_READ_REPLY,
+ RESPST_COMPLETE,
+ RESPST_ACKNOWLEDGE,
+ RESPST_CLEANUP,
+ RESPST_DUPLICATE_REQUEST,
+ RESPST_ERR_MALFORMED_WQE,
+ RESPST_ERR_UNSUPPORTED_OPCODE,
+ RESPST_ERR_MISALIGNED_ATOMIC,
+ RESPST_ERR_PSN_OUT_OF_SEQ,
+ RESPST_ERR_MISSING_OPCODE_FIRST,
+ RESPST_ERR_MISSING_OPCODE_LAST_C,
+ RESPST_ERR_MISSING_OPCODE_LAST_D1E,
+ RESPST_ERR_TOO_MANY_RDMA_ATM_REQ,
+ RESPST_ERR_RNR,
+ RESPST_ERR_RKEY_VIOLATION,
+ RESPST_ERR_LENGTH,
+ RESPST_ERR_CQ_OVERFLOW,
+ RESPST_ERROR,
+ RESPST_RESET,
+ RESPST_DONE,
+ RESPST_EXIT,
+};
+
+static char *resp_state_name[] = {
+ [RESPST_NONE] = "NONE",
+ [RESPST_GET_REQ] = "GET_REQ",
+ [RESPST_CHK_PSN] = "CHK_PSN",
+ [RESPST_CHK_OP_SEQ] = "CHK_OP_SEQ",
+ [RESPST_CHK_OP_VALID] = "CHK_OP_VALID",
+ [RESPST_CHK_RESOURCE] = "CHK_RESOURCE",
+ [RESPST_CHK_LENGTH] = "CHK_LENGTH",
+ [RESPST_CHK_RKEY] = "CHK_RKEY",
+ [RESPST_EXECUTE] = "EXECUTE",
+ [RESPST_READ_REPLY] = "READ_REPLY",
+ [RESPST_COMPLETE] = "COMPLETE",
+ [RESPST_ACKNOWLEDGE] = "ACKNOWLEDGE",
+ [RESPST_CLEANUP] = "CLEANUP",
+ [RESPST_DUPLICATE_REQUEST] = "DUPLICATE_REQUEST",
+ [RESPST_ERR_MALFORMED_WQE] = "ERR_MALFORMED_WQE",
+ [RESPST_ERR_UNSUPPORTED_OPCODE] = "ERR_UNSUPPORTED_OPCODE",
+ [RESPST_ERR_MISALIGNED_ATOMIC] = "ERR_MISALIGNED_ATOMIC",
+ [RESPST_ERR_PSN_OUT_OF_SEQ] = "ERR_PSN_OUT_OF_SEQ",
+ [RESPST_ERR_MISSING_OPCODE_FIRST] = "ERR_MISSING_OPCODE_FIRST",
+ [RESPST_ERR_MISSING_OPCODE_LAST_C] = "ERR_MISSING_OPCODE_LAST_C",
+ [RESPST_ERR_MISSING_OPCODE_LAST_D1E] = "ERR_MISSING_OPCODE_LAST_D1E",
+ [RESPST_ERR_TOO_MANY_RDMA_ATM_REQ] = "ERR_TOO_MANY_RDMA_ATM_REQ",
+ [RESPST_ERR_RNR] = "ERR_RNR",
+ [RESPST_ERR_RKEY_VIOLATION] = "ERR_RKEY_VIOLATION",
+ [RESPST_ERR_LENGTH] = "ERR_LENGTH",
+ [RESPST_ERR_CQ_OVERFLOW] = "ERR_CQ_OVERFLOW",
+ [RESPST_ERROR] = "ERROR",
+ [RESPST_RESET] = "RESET",
+ [RESPST_DONE] = "DONE",
+ [RESPST_EXIT] = "EXIT",
+};
+
+/* rxe_recv calls here to add a request packet to the input queue */
+void rxe_resp_queue_pkt(struct rxe_dev *rxe, struct rxe_qp *qp,
+ struct sk_buff *skb)
+{
+ int must_sched;
+ struct rxe_pkt_info *pkt = SKB_TO_PKT(skb);
+
+ skb_queue_tail(&qp->req_pkts, skb);
+
+ must_sched = (pkt->opcode == IB_OPCODE_RC_RDMA_READ_REQUEST) ||
+ (skb_queue_len(&qp->req_pkts) > 1);
+
+ rxe_run_task(&qp->resp.task, must_sched);
+}
+
+static inline enum resp_states get_req(struct rxe_qp *qp,
+ struct rxe_pkt_info **pkt_p)
+{
+ struct sk_buff *skb;
+
+ if (qp->resp.state == QP_STATE_ERROR) {
+ skb = skb_dequeue(&qp->req_pkts);
+ if (skb) {
+ /* drain request packet queue */
+ rxe_drop_ref(qp);
+ kfree_skb(skb);
+ return RESPST_GET_REQ;
+ }
+
+ /* go drain recv wr queue */
+ return RESPST_CHK_RESOURCE;
+ }
+
+ skb = skb_peek(&qp->req_pkts);
+ if (!skb)
+ return RESPST_EXIT;
+
+ *pkt_p = SKB_TO_PKT(skb);
+
+ return (qp->resp.res) ? RESPST_READ_REPLY : RESPST_CHK_PSN;
+}
+
+static enum resp_states check_psn(struct rxe_qp *qp,
+ struct rxe_pkt_info *pkt)
+{
+ int diff = psn_compare(pkt->psn, qp->resp.psn);
+
+ switch (qp_type(qp)) {
+ case IB_QPT_RC:
+ if (diff > 0) {
+ if (qp->resp.sent_psn_nak)
+ return RESPST_CLEANUP;
+
+ qp->resp.sent_psn_nak = 1;
+ return RESPST_ERR_PSN_OUT_OF_SEQ;
+
+ } else if (diff < 0) {
+ return RESPST_DUPLICATE_REQUEST;
+ }
+
+ if (qp->resp.sent_psn_nak)
+ qp->resp.sent_psn_nak = 0;
+
+ break;
+
+ case IB_QPT_UC:
+ if (qp->resp.drop_msg || diff != 0) {
+ if (pkt->mask & RXE_START_MASK) {
+ qp->resp.drop_msg = 0;
+ return RESPST_CHK_OP_SEQ;
+ }
+
+ qp->resp.drop_msg = 1;
+ return RESPST_CLEANUP;
+ }
+ break;
+ default:
+ break;
+ }
+
+ return RESPST_CHK_OP_SEQ;
+}
+
+static enum resp_states check_op_seq(struct rxe_qp *qp,
+ struct rxe_pkt_info *pkt)
+{
+ switch (qp_type(qp)) {
+ case IB_QPT_RC:
+ switch (qp->resp.opcode) {
+ case IB_OPCODE_RC_SEND_FIRST:
+ case IB_OPCODE_RC_SEND_MIDDLE:
+ switch (pkt->opcode) {
+ case IB_OPCODE_RC_SEND_MIDDLE:
+ case IB_OPCODE_RC_SEND_LAST:
+ case IB_OPCODE_RC_SEND_LAST_WITH_IMMEDIATE:
+ case IB_OPCODE_RC_SEND_LAST_WITH_INVALIDATE:
+ return RESPST_CHK_OP_VALID;
+ default:
+ return RESPST_ERR_MISSING_OPCODE_LAST_C;
+ }
+
+ case IB_OPCODE_RC_RDMA_WRITE_FIRST:
+ case IB_OPCODE_RC_RDMA_WRITE_MIDDLE:
+ switch (pkt->opcode) {
+ case IB_OPCODE_RC_RDMA_WRITE_MIDDLE:
+ case IB_OPCODE_RC_RDMA_WRITE_LAST:
+ case IB_OPCODE_RC_RDMA_WRITE_LAST_WITH_IMMEDIATE:
+ return RESPST_CHK_OP_VALID;
+ default:
+ return RESPST_ERR_MISSING_OPCODE_LAST_C;
+ }
+
+ default:
+ switch (pkt->opcode) {
+ case IB_OPCODE_RC_SEND_MIDDLE:
+ case IB_OPCODE_RC_SEND_LAST:
+ case IB_OPCODE_RC_SEND_LAST_WITH_IMMEDIATE:
+ case IB_OPCODE_RC_SEND_LAST_WITH_INVALIDATE:
+ case IB_OPCODE_RC_RDMA_WRITE_MIDDLE:
+ case IB_OPCODE_RC_RDMA_WRITE_LAST:
+ case IB_OPCODE_RC_RDMA_WRITE_LAST_WITH_IMMEDIATE:
+ return RESPST_ERR_MISSING_OPCODE_FIRST;
+ default:
+ return RESPST_CHK_OP_VALID;
+ }
+ }
+ break;
+
+ case IB_QPT_UC:
+ switch (qp->resp.opcode) {
+ case IB_OPCODE_UC_SEND_FIRST:
+ case IB_OPCODE_UC_SEND_MIDDLE:
+ switch (pkt->opcode) {
+ case IB_OPCODE_UC_SEND_MIDDLE:
+ case IB_OPCODE_UC_SEND_LAST:
+ case IB_OPCODE_UC_SEND_LAST_WITH_IMMEDIATE:
+ return RESPST_CHK_OP_VALID;
+ default:
+ return RESPST_ERR_MISSING_OPCODE_LAST_D1E;
+ }
+
+ case IB_OPCODE_UC_RDMA_WRITE_FIRST:
+ case IB_OPCODE_UC_RDMA_WRITE_MIDDLE:
+ switch (pkt->opcode) {
+ case IB_OPCODE_UC_RDMA_WRITE_MIDDLE:
+ case IB_OPCODE_UC_RDMA_WRITE_LAST:
+ case IB_OPCODE_UC_RDMA_WRITE_LAST_WITH_IMMEDIATE:
+ return RESPST_CHK_OP_VALID;
+ default:
+ return RESPST_ERR_MISSING_OPCODE_LAST_D1E;
+ }
+
+ default:
+ switch (pkt->opcode) {
+ case IB_OPCODE_UC_SEND_MIDDLE:
+ case IB_OPCODE_UC_SEND_LAST:
+ case IB_OPCODE_UC_SEND_LAST_WITH_IMMEDIATE:
+ case IB_OPCODE_UC_RDMA_WRITE_MIDDLE:
+ case IB_OPCODE_UC_RDMA_WRITE_LAST:
+ case IB_OPCODE_UC_RDMA_WRITE_LAST_WITH_IMMEDIATE:
+ qp->resp.drop_msg = 1;
+ return RESPST_CLEANUP;
+ default:
+ return RESPST_CHK_OP_VALID;
+ }
+ }
+ break;
+
+ default:
+ return RESPST_CHK_OP_VALID;
+ }
+}
+
+static enum resp_states check_op_valid(struct rxe_qp *qp,
+ struct rxe_pkt_info *pkt)
+{
+ switch (qp_type(qp)) {
+ case IB_QPT_RC:
+ if (((pkt->mask & RXE_READ_MASK) &&
+ !(qp->attr.qp_access_flags & IB_ACCESS_REMOTE_READ)) ||
+ ((pkt->mask & RXE_WRITE_MASK) &&
+ !(qp->attr.qp_access_flags & IB_ACCESS_REMOTE_WRITE)) ||
+ ((pkt->mask & RXE_ATOMIC_MASK) &&
+ !(qp->attr.qp_access_flags & IB_ACCESS_REMOTE_ATOMIC))) {
+ return RESPST_ERR_UNSUPPORTED_OPCODE;
+ }
+
+ break;
+
+ case IB_QPT_UC:
+ if ((pkt->mask & RXE_WRITE_MASK) &&
+ !(qp->attr.qp_access_flags & IB_ACCESS_REMOTE_WRITE)) {
+ qp->resp.drop_msg = 1;
+ return RESPST_CLEANUP;
+ }
+
+ break;
+
+ case IB_QPT_UD:
+ case IB_QPT_SMI:
+ case IB_QPT_GSI:
+ break;
+
+ default:
+ WARN_ON(1);
+ break;
+ }
+
+ return RESPST_CHK_RESOURCE;
+}
+
+static enum resp_states get_srq_wqe(struct rxe_qp *qp)
+{
+ struct rxe_srq *srq = qp->srq;
+ struct rxe_queue *q = srq->rq.queue;
+ struct rxe_recv_wqe *wqe;
+ struct ib_event ev;
+
+ if (srq->error)
+ return RESPST_ERR_RNR;
+
+ spin_lock_bh(&srq->rq.consumer_lock);
+
+ wqe = queue_head(q);
+ if (!wqe) {
+ spin_unlock_bh(&srq->rq.consumer_lock);
+ return RESPST_ERR_RNR;
+ }
+
+ /* note kernel and user space recv wqes have same size */
+ memcpy(&qp->resp.srq_wqe, wqe, sizeof(qp->resp.srq_wqe));
+
+ qp->resp.wqe = &qp->resp.srq_wqe.wqe;
+ advance_consumer(q);
+
+ if (srq->limit && srq->ibsrq.event_handler &&
+ (queue_count(q) < srq->limit)) {
+ srq->limit = 0;
+ goto event;
+ }
+
+ spin_unlock_bh(&srq->rq.consumer_lock);
+ return RESPST_CHK_LENGTH;
+
+event:
+ spin_unlock_bh(&srq->rq.consumer_lock);
+ ev.device = qp->ibqp.device;
+ ev.element.srq = qp->ibqp.srq;
+ ev.event = IB_EVENT_SRQ_LIMIT_REACHED;
+ srq->ibsrq.event_handler(&ev, srq->ibsrq.srq_context);
+ return RESPST_CHK_LENGTH;
+}
+
+static enum resp_states check_resource(struct rxe_qp *qp,
+ struct rxe_pkt_info *pkt)
+{
+ struct rxe_srq *srq = qp->srq;
+
+ if (qp->resp.state == QP_STATE_ERROR) {
+ if (qp->resp.wqe) {
+ qp->resp.status = IB_WC_WR_FLUSH_ERR;
+ return RESPST_COMPLETE;
+ } else if (!srq) {
+ qp->resp.wqe = queue_head(qp->rq.queue);
+ if (qp->resp.wqe) {
+ qp->resp.status = IB_WC_WR_FLUSH_ERR;
+ return RESPST_COMPLETE;
+ } else {
+ return RESPST_EXIT;
+ }
+ } else {
+ return RESPST_EXIT;
+ }
+ }
+
+ if (pkt->mask & RXE_READ_OR_ATOMIC) {
+ /* it is the requesters job to not send
+ * too many read/atomic ops, we just
+ * recycle the responder resource queue
+ */
+ if (likely(qp->attr.max_rd_atomic > 0))
+ return RESPST_CHK_LENGTH;
+ else
+ return RESPST_ERR_TOO_MANY_RDMA_ATM_REQ;
+ }
+
+ if (pkt->mask & RXE_RWR_MASK) {
+ if (srq)
+ return get_srq_wqe(qp);
+
+ qp->resp.wqe = queue_head(qp->rq.queue);
+ return (qp->resp.wqe) ? RESPST_CHK_LENGTH : RESPST_ERR_RNR;
+ }
+
+ return RESPST_CHK_LENGTH;
+}
+
+static enum resp_states check_length(struct rxe_qp *qp,
+ struct rxe_pkt_info *pkt)
+{
+ switch (qp_type(qp)) {
+ case IB_QPT_RC:
+ return RESPST_CHK_RKEY;
+
+ case IB_QPT_UC:
+ return RESPST_CHK_RKEY;
+
+ default:
+ return RESPST_CHK_RKEY;
+ }
+}
+
+static enum resp_states check_rkey(struct rxe_qp *qp,
+ struct rxe_pkt_info *pkt)
+{
+ struct rxe_mem *mem;
+ u64 va;
+ u32 rkey;
+ u32 resid;
+ u32 pktlen;
+ int mtu = qp->mtu;
+ enum resp_states state;
+ int access;
+
+ if (pkt->mask & (RXE_READ_MASK | RXE_WRITE_MASK)) {
+ if (pkt->mask & RXE_RETH_MASK) {
+ qp->resp.va = reth_va(pkt);
+ qp->resp.rkey = reth_rkey(pkt);
+ qp->resp.resid = reth_len(pkt);
+ }
+ access = (pkt->mask & RXE_READ_MASK) ? IB_ACCESS_REMOTE_READ
+ : IB_ACCESS_REMOTE_WRITE;
+ } else if (pkt->mask & RXE_ATOMIC_MASK) {
+ qp->resp.va = atmeth_va(pkt);
+ qp->resp.rkey = atmeth_rkey(pkt);
+ qp->resp.resid = sizeof(u64);
+ access = IB_ACCESS_REMOTE_ATOMIC;
+ } else {
+ return RESPST_EXECUTE;
+ }
+
+ va = qp->resp.va;
+ rkey = qp->resp.rkey;
+ resid = qp->resp.resid;
+ pktlen = payload_size(pkt);
+
+ mem = lookup_mem(qp->pd, access, rkey, lookup_remote);
+ if (!mem) {
+ state = RESPST_ERR_RKEY_VIOLATION;
+ goto err1;
+ }
+
+ if (unlikely(mem->state == RXE_MEM_STATE_FREE)) {
+ state = RESPST_ERR_RKEY_VIOLATION;
+ goto err1;
+ }
+
+ if (mem_check_range(mem, va, resid)) {
+ state = RESPST_ERR_RKEY_VIOLATION;
+ goto err2;
+ }
+
+ if (pkt->mask & RXE_WRITE_MASK) {
+ if (resid > mtu) {
+ if (pktlen != mtu || bth_pad(pkt)) {
+ state = RESPST_ERR_LENGTH;
+ goto err2;
+ }
+
+ resid = mtu;
+ } else {
+ if (pktlen != resid) {
+ state = RESPST_ERR_LENGTH;
+ goto err2;
+ }
+ if ((bth_pad(pkt) != (0x3 & (-resid)))) {
+ /* This case may not be exactly that
+ * but nothing else fits.
+ */
+ state = RESPST_ERR_LENGTH;
+ goto err2;
+ }
+ }
+ }
+
+ WARN_ON(qp->resp.mr);
+
+ qp->resp.mr = mem;
+ return RESPST_EXECUTE;
+
+err2:
+ rxe_drop_ref(mem);
+err1:
+ return state;
+}
+
+static enum resp_states send_data_in(struct rxe_qp *qp, void *data_addr,
+ int data_len)
+{
+ int err;
+ struct rxe_dev *rxe = to_rdev(qp->ibqp.device);
+
+ err = copy_data(rxe, qp->pd, IB_ACCESS_LOCAL_WRITE, &qp->resp.wqe->dma,
+ data_addr, data_len, to_mem_obj, NULL);
+ if (unlikely(err))
+ return (err == -ENOSPC) ? RESPST_ERR_LENGTH
+ : RESPST_ERR_MALFORMED_WQE;
+
+ return RESPST_NONE;
+}
+
+static enum resp_states write_data_in(struct rxe_qp *qp,
+ struct rxe_pkt_info *pkt)
+{
+ enum resp_states rc = RESPST_NONE;
+ int err;
+ int data_len = payload_size(pkt);
+
+ err = rxe_mem_copy(qp->resp.mr, qp->resp.va, payload_addr(pkt),
+ data_len, to_mem_obj, NULL);
+ if (err) {
+ rc = RESPST_ERR_RKEY_VIOLATION;
+ goto out;
+ }
+
+ qp->resp.va += data_len;
+ qp->resp.resid -= data_len;
+
+out:
+ return rc;
+}
+
+/* Guarantee atomicity of atomic operations at the machine level. */
+static DEFINE_SPINLOCK(atomic_ops_lock);
+
+static enum resp_states process_atomic(struct rxe_qp *qp,
+ struct rxe_pkt_info *pkt)
+{
+ u64 iova = atmeth_va(pkt);
+ u64 *vaddr;
+ enum resp_states ret;
+ struct rxe_mem *mr = qp->resp.mr;
+
+ if (mr->state != RXE_MEM_STATE_VALID) {
+ ret = RESPST_ERR_RKEY_VIOLATION;
+ goto out;
+ }
+
+ vaddr = iova_to_vaddr(mr, iova, sizeof(u64));
+
+ /* check vaddr is 8 bytes aligned. */
+ if (!vaddr || (uintptr_t)vaddr & 7) {
+ ret = RESPST_ERR_MISALIGNED_ATOMIC;
+ goto out;
+ }
+
+ spin_lock_bh(&atomic_ops_lock);
+
+ qp->resp.atomic_orig = *vaddr;
+
+ if (pkt->opcode == IB_OPCODE_RC_COMPARE_SWAP ||
+ pkt->opcode == IB_OPCODE_RD_COMPARE_SWAP) {
+ if (*vaddr == atmeth_comp(pkt))
+ *vaddr = atmeth_swap_add(pkt);
+ } else {
+ *vaddr += atmeth_swap_add(pkt);
+ }
+
+ spin_unlock_bh(&atomic_ops_lock);
+
+ ret = RESPST_NONE;
+out:
+ return ret;
+}
+
+static struct sk_buff *prepare_ack_packet(struct rxe_qp *qp,
+ struct rxe_pkt_info *pkt,
+ struct rxe_pkt_info *ack,
+ int opcode,
+ int payload,
+ u32 psn,
+ u8 syndrome,
+ u32 *crcp)
+{
+ struct rxe_dev *rxe = to_rdev(qp->ibqp.device);
+ struct sk_buff *skb;
+ u32 crc = 0;
+ u32 *p;
+ int paylen;
+ int pad;
+ int err;
+
+ /*
+ * allocate packet
+ */
+ pad = (-payload) & 0x3;
+ paylen = rxe_opcode[opcode].length + payload + pad + RXE_ICRC_SIZE;
+
+ skb = rxe->ifc_ops->init_packet(rxe, &qp->pri_av, paylen, ack);
+ if (!skb)
+ return NULL;
+
+ ack->qp = qp;
+ ack->opcode = opcode;
+ ack->mask = rxe_opcode[opcode].mask;
+ ack->offset = pkt->offset;
+ ack->paylen = paylen;
+
+ /* fill in bth using the request packet headers */
+ memcpy(ack->hdr, pkt->hdr, pkt->offset + RXE_BTH_BYTES);
+
+ bth_set_opcode(ack, opcode);
+ bth_set_qpn(ack, qp->attr.dest_qp_num);
+ bth_set_pad(ack, pad);
+ bth_set_se(ack, 0);
+ bth_set_psn(ack, psn);
+ bth_set_ack(ack, 0);
+ ack->psn = psn;
+
+ if (ack->mask & RXE_AETH_MASK) {
+ aeth_set_syn(ack, syndrome);
+ aeth_set_msn(ack, qp->resp.msn);
+ }
+
+ if (ack->mask & RXE_ATMACK_MASK)
+ atmack_set_orig(ack, qp->resp.atomic_orig);
+
+ err = rxe->ifc_ops->prepare(rxe, ack, skb, &crc);
+ if (err) {
+ kfree_skb(skb);
+ return NULL;
+ }
+
+ if (crcp) {
+ /* CRC computation will be continued by the caller */
+ *crcp = crc;
+ } else {
+ p = payload_addr(ack) + payload + bth_pad(ack);
+ *p = ~crc;
+ }
+
+ return skb;
+}
+
+/* RDMA read response. If res is not NULL, then we have a current RDMA request
+ * being processed or replayed.
+ */
+static enum resp_states read_reply(struct rxe_qp *qp,
+ struct rxe_pkt_info *req_pkt)
+{
+ struct rxe_dev *rxe = to_rdev(qp->ibqp.device);
+ struct rxe_pkt_info ack_pkt;
+ struct sk_buff *skb;
+ int mtu = qp->mtu;
+ enum resp_states state;
+ int payload;
+ int opcode;
+ int err;
+ struct resp_res *res = qp->resp.res;
+ u32 icrc;
+ u32 *p;
+
+ if (!res) {
+ /* This is the first time we process that request. Get a
+ * resource
+ */
+ res = &qp->resp.resources[qp->resp.res_head];
+
+ free_rd_atomic_resource(qp, res);
+ rxe_advance_resp_resource(qp);
+
+ res->type = RXE_READ_MASK;
+
+ res->read.va = qp->resp.va;
+ res->read.va_org = qp->resp.va;
+
+ res->first_psn = req_pkt->psn;
+ res->last_psn = req_pkt->psn +
+ (reth_len(req_pkt) + mtu - 1) /
+ mtu - 1;
+ res->cur_psn = req_pkt->psn;
+
+ res->read.resid = qp->resp.resid;
+ res->read.length = qp->resp.resid;
+ res->read.rkey = qp->resp.rkey;
+
+ /* note res inherits the reference to mr from qp */
+ res->read.mr = qp->resp.mr;
+ qp->resp.mr = NULL;
+
+ qp->resp.res = res;
+ res->state = rdatm_res_state_new;
+ }
+
+ if (res->state == rdatm_res_state_new) {
+ if (res->read.resid <= mtu)
+ opcode = IB_OPCODE_RC_RDMA_READ_RESPONSE_ONLY;
+ else
+ opcode = IB_OPCODE_RC_RDMA_READ_RESPONSE_FIRST;
+ } else {
+ if (res->read.resid > mtu)
+ opcode = IB_OPCODE_RC_RDMA_READ_RESPONSE_MIDDLE;
+ else
+ opcode = IB_OPCODE_RC_RDMA_READ_RESPONSE_LAST;
+ }
+
+ res->state = rdatm_res_state_next;
+
+ payload = min_t(int, res->read.resid, mtu);
+
+ skb = prepare_ack_packet(qp, req_pkt, &ack_pkt, opcode, payload,
+ res->cur_psn, AETH_ACK_UNLIMITED, &icrc);
+ if (!skb)
+ return RESPST_ERR_RNR;
+
+ err = rxe_mem_copy(res->read.mr, res->read.va, payload_addr(&ack_pkt),
+ payload, from_mem_obj, &icrc);
+ if (err)
+ pr_err("Failed copying memory\n");
+
+ p = payload_addr(&ack_pkt) + payload + bth_pad(&ack_pkt);
+ *p = ~icrc;
+
+ err = rxe_xmit_packet(rxe, qp, &ack_pkt, skb);
+ if (err) {
+ pr_err("Failed sending RDMA reply.\n");
+ kfree_skb(skb);
+ return RESPST_ERR_RNR;
+ }
+
+ res->read.va += payload;
+ res->read.resid -= payload;
+ res->cur_psn = (res->cur_psn + 1) & BTH_PSN_MASK;
+
+ if (res->read.resid > 0) {
+ state = RESPST_DONE;
+ } else {
+ qp->resp.res = NULL;
+ qp->resp.opcode = -1;
+ qp->resp.psn = res->cur_psn;
+ state = RESPST_CLEANUP;
+ }
+
+ return state;
+}
+
+/* Executes a new request. A retried request never reach that function (send
+ * and writes are discarded, and reads and atomics are retried elsewhere.
+ */
+static enum resp_states execute(struct rxe_qp *qp, struct rxe_pkt_info *pkt)
+{
+ enum resp_states err;
+
+ if (pkt->mask & RXE_SEND_MASK) {
+ if (qp_type(qp) == IB_QPT_UD ||
+ qp_type(qp) == IB_QPT_SMI ||
+ qp_type(qp) == IB_QPT_GSI) {
+ union rdma_network_hdr hdr;
+ struct sk_buff *skb = PKT_TO_SKB(pkt);
+
+ memset(&hdr, 0, sizeof(hdr));
+ if (skb->protocol == htons(ETH_P_IP))
+ memcpy(&hdr.roce4grh, ip_hdr(skb), sizeof(hdr.roce4grh));
+ else if (skb->protocol == htons(ETH_P_IPV6))
+ memcpy(&hdr.ibgrh, ipv6_hdr(skb), sizeof(hdr.ibgrh));
+
+ err = send_data_in(qp, &hdr, sizeof(hdr));
+ if (err)
+ return err;
+ }
+ err = send_data_in(qp, payload_addr(pkt), payload_size(pkt));
+ if (err)
+ return err;
+ } else if (pkt->mask & RXE_WRITE_MASK) {
+ err = write_data_in(qp, pkt);
+ if (err)
+ return err;
+ } else if (pkt->mask & RXE_READ_MASK) {
+ /* For RDMA Read we can increment the msn now. See C9-148. */
+ qp->resp.msn++;
+ return RESPST_READ_REPLY;
+ } else if (pkt->mask & RXE_ATOMIC_MASK) {
+ err = process_atomic(qp, pkt);
+ if (err)
+ return err;
+ } else
+ /* Unreachable */
+ WARN_ON(1);
+
+ /* We successfully processed this new request. */
+ qp->resp.msn++;
+
+ /* next expected psn, read handles this separately */
+ qp->resp.psn = (pkt->psn + 1) & BTH_PSN_MASK;
+
+ qp->resp.opcode = pkt->opcode;
+ qp->resp.status = IB_WC_SUCCESS;
+
+ if (pkt->mask & RXE_COMP_MASK)
+ return RESPST_COMPLETE;
+ else if (qp_type(qp) == IB_QPT_RC)
+ return RESPST_ACKNOWLEDGE;
+ else
+ return RESPST_CLEANUP;
+}
+
+static enum resp_states do_complete(struct rxe_qp *qp,
+ struct rxe_pkt_info *pkt)
+{
+ struct rxe_cqe cqe;
+ struct ib_wc *wc = &cqe.ibwc;
+ struct ib_uverbs_wc *uwc = &cqe.uibwc;
+ struct rxe_recv_wqe *wqe = qp->resp.wqe;
+
+ if (unlikely(!wqe))
+ return RESPST_CLEANUP;
+
+ memset(&cqe, 0, sizeof(cqe));
+
+ wc->wr_id = wqe->wr_id;
+ wc->status = qp->resp.status;
+ wc->qp = &qp->ibqp;
+
+ /* fields after status are not required for errors */
+ if (wc->status == IB_WC_SUCCESS) {
+ wc->opcode = (pkt->mask & RXE_IMMDT_MASK &&
+ pkt->mask & RXE_WRITE_MASK) ?
+ IB_WC_RECV_RDMA_WITH_IMM : IB_WC_RECV;
+ wc->vendor_err = 0;
+ wc->byte_len = wqe->dma.length - wqe->dma.resid;
+
+ /* fields after byte_len are different between kernel and user
+ * space
+ */
+ if (qp->rcq->is_user) {
+ uwc->wc_flags = IB_WC_GRH;
+
+ if (pkt->mask & RXE_IMMDT_MASK) {
+ uwc->wc_flags |= IB_WC_WITH_IMM;
+ uwc->ex.imm_data =
+ (__u32 __force)immdt_imm(pkt);
+ }
+
+ if (pkt->mask & RXE_IETH_MASK) {
+ uwc->wc_flags |= IB_WC_WITH_INVALIDATE;
+ uwc->ex.invalidate_rkey = ieth_rkey(pkt);
+ }
+
+ uwc->qp_num = qp->ibqp.qp_num;
+
+ if (pkt->mask & RXE_DETH_MASK)
+ uwc->src_qp = deth_sqp(pkt);
+
+ uwc->port_num = qp->attr.port_num;
+ } else {
+ struct sk_buff *skb = PKT_TO_SKB(pkt);
+
+ wc->wc_flags = IB_WC_GRH | IB_WC_WITH_NETWORK_HDR_TYPE;
+ if (skb->protocol == htons(ETH_P_IP))
+ wc->network_hdr_type = RDMA_NETWORK_IPV4;
+ else
+ wc->network_hdr_type = RDMA_NETWORK_IPV6;
+
+ if (pkt->mask & RXE_IMMDT_MASK) {
+ wc->wc_flags |= IB_WC_WITH_IMM;
+ wc->ex.imm_data = immdt_imm(pkt);
+ }
+
+ if (pkt->mask & RXE_IETH_MASK) {
+ struct rxe_dev *rxe = to_rdev(qp->ibqp.device);
+ struct rxe_mem *rmr;
+
+ wc->wc_flags |= IB_WC_WITH_INVALIDATE;
+ wc->ex.invalidate_rkey = ieth_rkey(pkt);
+
+ rmr = rxe_pool_get_index(&rxe->mr_pool,
+ wc->ex.invalidate_rkey >> 8);
+ if (unlikely(!rmr)) {
+ pr_err("Bad rkey %#x invalidation\n", wc->ex.invalidate_rkey);
+ return RESPST_ERROR;
+ }
+ rmr->state = RXE_MEM_STATE_FREE;
+ }
+
+ wc->qp = &qp->ibqp;
+
+ if (pkt->mask & RXE_DETH_MASK)
+ wc->src_qp = deth_sqp(pkt);
+
+ wc->port_num = qp->attr.port_num;
+ }
+ }
+
+ /* have copy for srq and reference for !srq */
+ if (!qp->srq)
+ advance_consumer(qp->rq.queue);
+
+ qp->resp.wqe = NULL;
+
+ if (rxe_cq_post(qp->rcq, &cqe, pkt ? bth_se(pkt) : 1))
+ return RESPST_ERR_CQ_OVERFLOW;
+
+ if (qp->resp.state == QP_STATE_ERROR)
+ return RESPST_CHK_RESOURCE;
+
+ if (!pkt)
+ return RESPST_DONE;
+ else if (qp_type(qp) == IB_QPT_RC)
+ return RESPST_ACKNOWLEDGE;
+ else
+ return RESPST_CLEANUP;
+}
+
+static int send_ack(struct rxe_qp *qp, struct rxe_pkt_info *pkt,
+ u8 syndrome, u32 psn)
+{
+ int err = 0;
+ struct rxe_pkt_info ack_pkt;
+ struct sk_buff *skb;
+ struct rxe_dev *rxe = to_rdev(qp->ibqp.device);
+
+ skb = prepare_ack_packet(qp, pkt, &ack_pkt, IB_OPCODE_RC_ACKNOWLEDGE,
+ 0, psn, syndrome, NULL);
+ if (!skb) {
+ err = -ENOMEM;
+ goto err1;
+ }
+
+ err = rxe_xmit_packet(rxe, qp, &ack_pkt, skb);
+ if (err) {
+ pr_err_ratelimited("Failed sending ack\n");
+ kfree_skb(skb);
+ }
+
+err1:
+ return err;
+}
+
+static int send_atomic_ack(struct rxe_qp *qp, struct rxe_pkt_info *pkt,
+ u8 syndrome)
+{
+ int rc = 0;
+ struct rxe_pkt_info ack_pkt;
+ struct sk_buff *skb;
+ struct sk_buff *skb_copy;
+ struct rxe_dev *rxe = to_rdev(qp->ibqp.device);
+ struct resp_res *res;
+
+ skb = prepare_ack_packet(qp, pkt, &ack_pkt,
+ IB_OPCODE_RC_ATOMIC_ACKNOWLEDGE, 0, pkt->psn,
+ syndrome, NULL);
+ if (!skb) {
+ rc = -ENOMEM;
+ goto out;
+ }
+
+ skb_copy = skb_clone(skb, GFP_ATOMIC);
+ if (skb_copy)
+ rxe_add_ref(qp); /* for the new SKB */
+ else {
+ pr_warn("Could not clone atomic response\n");
+ rc = -ENOMEM;
+ goto out;
+ }
+
+ res = &qp->resp.resources[qp->resp.res_head];
+ free_rd_atomic_resource(qp, res);
+ rxe_advance_resp_resource(qp);
+
+ res->type = RXE_ATOMIC_MASK;
+ res->atomic.skb = skb;
+ res->first_psn = qp->resp.psn;
+ res->last_psn = qp->resp.psn;
+ res->cur_psn = qp->resp.psn;
+
+ rc = rxe_xmit_packet(rxe, qp, &ack_pkt, skb_copy);
+ if (rc) {
+ pr_err_ratelimited("Failed sending ack\n");
+ rxe_drop_ref(qp);
+ kfree_skb(skb_copy);
+ }
+
+out:
+ return rc;
+}
+
+static enum resp_states acknowledge(struct rxe_qp *qp,
+ struct rxe_pkt_info *pkt)
+{
+ if (qp_type(qp) != IB_QPT_RC)
+ return RESPST_CLEANUP;
+
+ if (qp->resp.aeth_syndrome != AETH_ACK_UNLIMITED)
+ send_ack(qp, pkt, qp->resp.aeth_syndrome, pkt->psn);
+ else if (pkt->mask & RXE_ATOMIC_MASK)
+ send_atomic_ack(qp, pkt, AETH_ACK_UNLIMITED);
+ else if (bth_ack(pkt))
+ send_ack(qp, pkt, AETH_ACK_UNLIMITED, pkt->psn);
+
+ return RESPST_CLEANUP;
+}
+
+static enum resp_states cleanup(struct rxe_qp *qp,
+ struct rxe_pkt_info *pkt)
+{
+ struct sk_buff *skb;
+
+ if (pkt) {
+ skb = skb_dequeue(&qp->req_pkts);
+ rxe_drop_ref(qp);
+ kfree_skb(skb);
+ }
+
+ if (qp->resp.mr) {
+ rxe_drop_ref(qp->resp.mr);
+ qp->resp.mr = NULL;
+ }
+
+ return RESPST_DONE;
+}
+
+static struct resp_res *find_resource(struct rxe_qp *qp, u32 psn)
+{
+ int i;
+
+ for (i = 0; i < qp->attr.max_rd_atomic; i++) {
+ struct resp_res *res = &qp->resp.resources[i];
+
+ if (res->type == 0)
+ continue;
+
+ if (psn_compare(psn, res->first_psn) >= 0 &&
+ psn_compare(psn, res->last_psn) <= 0) {
+ return res;
+ }
+ }
+
+ return NULL;
+}
+
+static enum resp_states duplicate_request(struct rxe_qp *qp,
+ struct rxe_pkt_info *pkt)
+{
+ enum resp_states rc;
+
+ if (pkt->mask & RXE_SEND_MASK ||
+ pkt->mask & RXE_WRITE_MASK) {
+ /* SEND. Ack again and cleanup. C9-105. */
+ if (bth_ack(pkt))
+ send_ack(qp, pkt, AETH_ACK_UNLIMITED, qp->resp.psn - 1);
+ rc = RESPST_CLEANUP;
+ goto out;
+ } else if (pkt->mask & RXE_READ_MASK) {
+ struct resp_res *res;
+
+ res = find_resource(qp, pkt->psn);
+ if (!res) {
+ /* Resource not found. Class D error. Drop the
+ * request.
+ */
+ rc = RESPST_CLEANUP;
+ goto out;
+ } else {
+ /* Ensure this new request is the same as the previous
+ * one or a subset of it.
+ */
+ u64 iova = reth_va(pkt);
+ u32 resid = reth_len(pkt);
+
+ if (iova < res->read.va_org ||
+ resid > res->read.length ||
+ (iova + resid) > (res->read.va_org +
+ res->read.length)) {
+ rc = RESPST_CLEANUP;
+ goto out;
+ }
+
+ if (reth_rkey(pkt) != res->read.rkey) {
+ rc = RESPST_CLEANUP;
+ goto out;
+ }
+
+ res->cur_psn = pkt->psn;
+ res->state = (pkt->psn == res->first_psn) ?
+ rdatm_res_state_new :
+ rdatm_res_state_replay;
+
+ /* Reset the resource, except length. */
+ res->read.va_org = iova;
+ res->read.va = iova;
+ res->read.resid = resid;
+
+ /* Replay the RDMA read reply. */
+ qp->resp.res = res;
+ rc = RESPST_READ_REPLY;
+ goto out;
+ }
+ } else {
+ struct resp_res *res;
+
+ /* Find the operation in our list of responder resources. */
+ res = find_resource(qp, pkt->psn);
+ if (res) {
+ struct sk_buff *skb_copy;
+
+ skb_copy = skb_clone(res->atomic.skb, GFP_ATOMIC);
+ if (skb_copy) {
+ rxe_add_ref(qp); /* for the new SKB */
+ } else {
+ pr_warn("Couldn't clone atomic resp\n");
+ rc = RESPST_CLEANUP;
+ goto out;
+ }
+ bth_set_psn(SKB_TO_PKT(skb_copy),
+ qp->resp.psn - 1);
+ /* Resend the result. */
+ rc = rxe_xmit_packet(to_rdev(qp->ibqp.device), qp,
+ pkt, skb_copy);
+ if (rc) {
+ pr_err("Failed resending result. This flow is not handled - skb ignored\n");
+ kfree_skb(skb_copy);
+ rc = RESPST_CLEANUP;
+ goto out;
+ }
+ }
+
+ /* Resource not found. Class D error. Drop the request. */
+ rc = RESPST_CLEANUP;
+ goto out;
+ }
+out:
+ return rc;
+}
+
+/* Process a class A or C. Both are treated the same in this implementation. */
+static void do_class_ac_error(struct rxe_qp *qp, u8 syndrome,
+ enum ib_wc_status status)
+{
+ qp->resp.aeth_syndrome = syndrome;
+ qp->resp.status = status;
+
+ /* indicate that we should go through the ERROR state */
+ qp->resp.goto_error = 1;
+}
+
+static enum resp_states do_class_d1e_error(struct rxe_qp *qp)
+{
+ /* UC */
+ if (qp->srq) {
+ /* Class E */
+ qp->resp.drop_msg = 1;
+ if (qp->resp.wqe) {
+ qp->resp.status = IB_WC_REM_INV_REQ_ERR;
+ return RESPST_COMPLETE;
+ } else {
+ return RESPST_CLEANUP;
+ }
+ } else {
+ /* Class D1. This packet may be the start of a
+ * new message and could be valid. The previous
+ * message is invalid and ignored. reset the
+ * recv wr to its original state
+ */
+ if (qp->resp.wqe) {
+ qp->resp.wqe->dma.resid = qp->resp.wqe->dma.length;
+ qp->resp.wqe->dma.cur_sge = 0;
+ qp->resp.wqe->dma.sge_offset = 0;
+ qp->resp.opcode = -1;
+ }
+
+ if (qp->resp.mr) {
+ rxe_drop_ref(qp->resp.mr);
+ qp->resp.mr = NULL;
+ }
+
+ return RESPST_CLEANUP;
+ }
+}
+
+int rxe_responder(void *arg)
+{
+ struct rxe_qp *qp = (struct rxe_qp *)arg;
+ enum resp_states state;
+ struct rxe_pkt_info *pkt = NULL;
+ int ret = 0;
+
+ qp->resp.aeth_syndrome = AETH_ACK_UNLIMITED;
+
+ if (!qp->valid) {
+ ret = -EINVAL;
+ goto done;
+ }
+
+ switch (qp->resp.state) {
+ case QP_STATE_RESET:
+ state = RESPST_RESET;
+ break;
+
+ default:
+ state = RESPST_GET_REQ;
+ break;
+ }
+
+ while (1) {
+ pr_debug("state = %s\n", resp_state_name[state]);
+ switch (state) {
+ case RESPST_GET_REQ:
+ state = get_req(qp, &pkt);
+ break;
+ case RESPST_CHK_PSN:
+ state = check_psn(qp, pkt);
+ break;
+ case RESPST_CHK_OP_SEQ:
+ state = check_op_seq(qp, pkt);
+ break;
+ case RESPST_CHK_OP_VALID:
+ state = check_op_valid(qp, pkt);
+ break;
+ case RESPST_CHK_RESOURCE:
+ state = check_resource(qp, pkt);
+ break;
+ case RESPST_CHK_LENGTH:
+ state = check_length(qp, pkt);
+ break;
+ case RESPST_CHK_RKEY:
+ state = check_rkey(qp, pkt);
+ break;
+ case RESPST_EXECUTE:
+ state = execute(qp, pkt);
+ break;
+ case RESPST_COMPLETE:
+ state = do_complete(qp, pkt);
+ break;
+ case RESPST_READ_REPLY:
+ state = read_reply(qp, pkt);
+ break;
+ case RESPST_ACKNOWLEDGE:
+ state = acknowledge(qp, pkt);
+ break;
+ case RESPST_CLEANUP:
+ state = cleanup(qp, pkt);
+ break;
+ case RESPST_DUPLICATE_REQUEST:
+ state = duplicate_request(qp, pkt);
+ break;
+ case RESPST_ERR_PSN_OUT_OF_SEQ:
+ /* RC only - Class B. Drop packet. */
+ send_ack(qp, pkt, AETH_NAK_PSN_SEQ_ERROR, qp->resp.psn);
+ state = RESPST_CLEANUP;
+ break;
+
+ case RESPST_ERR_TOO_MANY_RDMA_ATM_REQ:
+ case RESPST_ERR_MISSING_OPCODE_FIRST:
+ case RESPST_ERR_MISSING_OPCODE_LAST_C:
+ case RESPST_ERR_UNSUPPORTED_OPCODE:
+ case RESPST_ERR_MISALIGNED_ATOMIC:
+ /* RC Only - Class C. */
+ do_class_ac_error(qp, AETH_NAK_INVALID_REQ,
+ IB_WC_REM_INV_REQ_ERR);
+ state = RESPST_COMPLETE;
+ break;
+
+ case RESPST_ERR_MISSING_OPCODE_LAST_D1E:
+ state = do_class_d1e_error(qp);
+ break;
+ case RESPST_ERR_RNR:
+ if (qp_type(qp) == IB_QPT_RC) {
+ /* RC - class B */
+ send_ack(qp, pkt, AETH_RNR_NAK |
+ (~AETH_TYPE_MASK &
+ qp->attr.min_rnr_timer),
+ pkt->psn);
+ } else {
+ /* UD/UC - class D */
+ qp->resp.drop_msg = 1;
+ }
+ state = RESPST_CLEANUP;
+ break;
+
+ case RESPST_ERR_RKEY_VIOLATION:
+ if (qp_type(qp) == IB_QPT_RC) {
+ /* Class C */
+ do_class_ac_error(qp, AETH_NAK_REM_ACC_ERR,
+ IB_WC_REM_ACCESS_ERR);
+ state = RESPST_COMPLETE;
+ } else {
+ qp->resp.drop_msg = 1;
+ if (qp->srq) {
+ /* UC/SRQ Class D */
+ qp->resp.status = IB_WC_REM_ACCESS_ERR;
+ state = RESPST_COMPLETE;
+ } else {
+ /* UC/non-SRQ Class E. */
+ state = RESPST_CLEANUP;
+ }
+ }
+ break;
+
+ case RESPST_ERR_LENGTH:
+ if (qp_type(qp) == IB_QPT_RC) {
+ /* Class C */
+ do_class_ac_error(qp, AETH_NAK_INVALID_REQ,
+ IB_WC_REM_INV_REQ_ERR);
+ state = RESPST_COMPLETE;
+ } else if (qp->srq) {
+ /* UC/UD - class E */
+ qp->resp.status = IB_WC_REM_INV_REQ_ERR;
+ state = RESPST_COMPLETE;
+ } else {
+ /* UC/UD - class D */
+ qp->resp.drop_msg = 1;
+ state = RESPST_CLEANUP;
+ }
+ break;
+
+ case RESPST_ERR_MALFORMED_WQE:
+ /* All, Class A. */
+ do_class_ac_error(qp, AETH_NAK_REM_OP_ERR,
+ IB_WC_LOC_QP_OP_ERR);
+ state = RESPST_COMPLETE;
+ break;
+
+ case RESPST_ERR_CQ_OVERFLOW:
+ /* All - Class G */
+ state = RESPST_ERROR;
+ break;
+
+ case RESPST_DONE:
+ if (qp->resp.goto_error) {
+ state = RESPST_ERROR;
+ break;
+ }
+
+ goto done;
+
+ case RESPST_EXIT:
+ if (qp->resp.goto_error) {
+ state = RESPST_ERROR;
+ break;
+ }
+
+ goto exit;
+
+ case RESPST_RESET: {
+ struct sk_buff *skb;
+
+ while ((skb = skb_dequeue(&qp->req_pkts))) {
+ rxe_drop_ref(qp);
+ kfree_skb(skb);
+ }
+
+ while (!qp->srq && qp->rq.queue &&
+ queue_head(qp->rq.queue))
+ advance_consumer(qp->rq.queue);
+
+ qp->resp.wqe = NULL;
+ goto exit;
+ }
+
+ case RESPST_ERROR:
+ qp->resp.goto_error = 0;
+ pr_warn("qp#%d moved to error state\n", qp_num(qp));
+ rxe_qp_error(qp);
+ goto exit;
+
+ default:
+ WARN_ON(1);
+ }
+ }
+
+exit:
+ ret = -EAGAIN;
+done:
+ return ret;
+}
diff --git a/drivers/infiniband/sw/rxe/rxe_srq.c b/drivers/infiniband/sw/rxe/rxe_srq.c
new file mode 100644
index 000000000000..2a6e3cd2d4e8
--- /dev/null
+++ b/drivers/infiniband/sw/rxe/rxe_srq.c
@@ -0,0 +1,193 @@
+/*
+ * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
+ * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include "rxe.h"
+#include "rxe_loc.h"
+#include "rxe_queue.h"
+
+int rxe_srq_chk_attr(struct rxe_dev *rxe, struct rxe_srq *srq,
+ struct ib_srq_attr *attr, enum ib_srq_attr_mask mask)
+{
+ if (srq && srq->error) {
+ pr_warn("srq in error state\n");
+ goto err1;
+ }
+
+ if (mask & IB_SRQ_MAX_WR) {
+ if (attr->max_wr > rxe->attr.max_srq_wr) {
+ pr_warn("max_wr(%d) > max_srq_wr(%d)\n",
+ attr->max_wr, rxe->attr.max_srq_wr);
+ goto err1;
+ }
+
+ if (attr->max_wr <= 0) {
+ pr_warn("max_wr(%d) <= 0\n", attr->max_wr);
+ goto err1;
+ }
+
+ if (srq && srq->limit && (attr->max_wr < srq->limit)) {
+ pr_warn("max_wr (%d) < srq->limit (%d)\n",
+ attr->max_wr, srq->limit);
+ goto err1;
+ }
+
+ if (attr->max_wr < RXE_MIN_SRQ_WR)
+ attr->max_wr = RXE_MIN_SRQ_WR;
+ }
+
+ if (mask & IB_SRQ_LIMIT) {
+ if (attr->srq_limit > rxe->attr.max_srq_wr) {
+ pr_warn("srq_limit(%d) > max_srq_wr(%d)\n",
+ attr->srq_limit, rxe->attr.max_srq_wr);
+ goto err1;
+ }
+
+ if (srq && (attr->srq_limit > srq->rq.queue->buf->index_mask)) {
+ pr_warn("srq_limit (%d) > cur limit(%d)\n",
+ attr->srq_limit,
+ srq->rq.queue->buf->index_mask);
+ goto err1;
+ }
+ }
+
+ if (mask == IB_SRQ_INIT_MASK) {
+ if (attr->max_sge > rxe->attr.max_srq_sge) {
+ pr_warn("max_sge(%d) > max_srq_sge(%d)\n",
+ attr->max_sge, rxe->attr.max_srq_sge);
+ goto err1;
+ }
+
+ if (attr->max_sge < RXE_MIN_SRQ_SGE)
+ attr->max_sge = RXE_MIN_SRQ_SGE;
+ }
+
+ return 0;
+
+err1:
+ return -EINVAL;
+}
+
+int rxe_srq_from_init(struct rxe_dev *rxe, struct rxe_srq *srq,
+ struct ib_srq_init_attr *init,
+ struct ib_ucontext *context, struct ib_udata *udata)
+{
+ int err;
+ int srq_wqe_size;
+ struct rxe_queue *q;
+
+ srq->ibsrq.event_handler = init->event_handler;
+ srq->ibsrq.srq_context = init->srq_context;
+ srq->limit = init->attr.srq_limit;
+ srq->srq_num = srq->pelem.index;
+ srq->rq.max_wr = init->attr.max_wr;
+ srq->rq.max_sge = init->attr.max_sge;
+
+ srq_wqe_size = rcv_wqe_size(srq->rq.max_sge);
+
+ spin_lock_init(&srq->rq.producer_lock);
+ spin_lock_init(&srq->rq.consumer_lock);
+
+ q = rxe_queue_init(rxe, &srq->rq.max_wr,
+ srq_wqe_size);
+ if (!q) {
+ pr_warn("unable to allocate queue for srq\n");
+ return -ENOMEM;
+ }
+
+ srq->rq.queue = q;
+
+ err = do_mmap_info(rxe, udata, false, context, q->buf,
+ q->buf_size, &q->ip);
+ if (err)
+ return err;
+
+ if (udata && udata->outlen >= sizeof(struct mminfo) + sizeof(u32)) {
+ if (copy_to_user(udata->outbuf + sizeof(struct mminfo),
+ &srq->srq_num, sizeof(u32)))
+ return -EFAULT;
+ }
+ return 0;
+}
+
+int rxe_srq_from_attr(struct rxe_dev *rxe, struct rxe_srq *srq,
+ struct ib_srq_attr *attr, enum ib_srq_attr_mask mask,
+ struct ib_udata *udata)
+{
+ int err;
+ struct rxe_queue *q = srq->rq.queue;
+ struct mminfo mi = { .offset = 1, .size = 0};
+
+ if (mask & IB_SRQ_MAX_WR) {
+ /* Check that we can write the mminfo struct to user space */
+ if (udata && udata->inlen >= sizeof(__u64)) {
+ __u64 mi_addr;
+
+ /* Get address of user space mminfo struct */
+ err = ib_copy_from_udata(&mi_addr, udata,
+ sizeof(mi_addr));
+ if (err)
+ goto err1;
+
+ udata->outbuf = (void __user *)(unsigned long)mi_addr;
+ udata->outlen = sizeof(mi);
+
+ if (!access_ok(VERIFY_WRITE,
+ (void __user *)udata->outbuf,
+ udata->outlen)) {
+ err = -EFAULT;
+ goto err1;
+ }
+ }
+
+ err = rxe_queue_resize(q, (unsigned int *)&attr->max_wr,
+ rcv_wqe_size(srq->rq.max_sge),
+ srq->rq.queue->ip ?
+ srq->rq.queue->ip->context :
+ NULL,
+ udata, &srq->rq.producer_lock,
+ &srq->rq.consumer_lock);
+ if (err)
+ goto err2;
+ }
+
+ if (mask & IB_SRQ_LIMIT)
+ srq->limit = attr->srq_limit;
+
+ return 0;
+
+err2:
+ rxe_queue_cleanup(q);
+ srq->rq.queue = NULL;
+err1:
+ return err;
+}
diff --git a/drivers/infiniband/sw/rxe/rxe_sysfs.c b/drivers/infiniband/sw/rxe/rxe_sysfs.c
new file mode 100644
index 000000000000..cf8e77800046
--- /dev/null
+++ b/drivers/infiniband/sw/rxe/rxe_sysfs.c
@@ -0,0 +1,157 @@
+/*
+ * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
+ * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include "rxe.h"
+#include "rxe_net.h"
+
+/* Copy argument and remove trailing CR. Return the new length. */
+static int sanitize_arg(const char *val, char *intf, int intf_len)
+{
+ int len;
+
+ if (!val)
+ return 0;
+
+ /* Remove newline. */
+ for (len = 0; len < intf_len - 1 && val[len] && val[len] != '\n'; len++)
+ intf[len] = val[len];
+ intf[len] = 0;
+
+ if (len == 0 || (val[len] != 0 && val[len] != '\n'))
+ return 0;
+
+ return len;
+}
+
+static void rxe_set_port_state(struct net_device *ndev)
+{
+ struct rxe_dev *rxe = net_to_rxe(ndev);
+ bool is_up = netif_running(ndev) && netif_carrier_ok(ndev);
+
+ if (!rxe)
+ goto out;
+
+ if (is_up)
+ rxe_port_up(rxe);
+ else
+ rxe_port_down(rxe); /* down for unknown state */
+out:
+ return;
+}
+
+static int rxe_param_set_add(const char *val, const struct kernel_param *kp)
+{
+ int len;
+ int err = 0;
+ char intf[32];
+ struct net_device *ndev = NULL;
+ struct rxe_dev *rxe;
+
+ len = sanitize_arg(val, intf, sizeof(intf));
+ if (!len) {
+ pr_err("rxe: add: invalid interface name\n");
+ err = -EINVAL;
+ goto err;
+ }
+
+ ndev = dev_get_by_name(&init_net, intf);
+ if (!ndev) {
+ pr_err("interface %s not found\n", intf);
+ err = -EINVAL;
+ goto err;
+ }
+
+ if (net_to_rxe(ndev)) {
+ pr_err("rxe: already configured on %s\n", intf);
+ err = -EINVAL;
+ goto err;
+ }
+
+ rxe = rxe_net_add(ndev);
+ if (!rxe) {
+ pr_err("rxe: failed to add %s\n", intf);
+ err = -EINVAL;
+ goto err;
+ }
+
+ rxe_set_port_state(ndev);
+ pr_info("rxe: added %s to %s\n", rxe->ib_dev.name, intf);
+err:
+ if (ndev)
+ dev_put(ndev);
+ return err;
+}
+
+static int rxe_param_set_remove(const char *val, const struct kernel_param *kp)
+{
+ int len;
+ char intf[32];
+ struct rxe_dev *rxe;
+
+ len = sanitize_arg(val, intf, sizeof(intf));
+ if (!len) {
+ pr_err("rxe: add: invalid interface name\n");
+ return -EINVAL;
+ }
+
+ if (strncmp("all", intf, len) == 0) {
+ pr_info("rxe_sys: remove all");
+ rxe_remove_all();
+ return 0;
+ }
+
+ rxe = get_rxe_by_name(intf);
+
+ if (!rxe) {
+ pr_err("rxe: not configured on %s\n", intf);
+ return -EINVAL;
+ }
+
+ list_del(&rxe->list);
+ rxe_remove(rxe);
+
+ return 0;
+}
+
+static const struct kernel_param_ops rxe_add_ops = {
+ .set = rxe_param_set_add,
+};
+
+static const struct kernel_param_ops rxe_remove_ops = {
+ .set = rxe_param_set_remove,
+};
+
+module_param_cb(add, &rxe_add_ops, NULL, 0200);
+MODULE_PARM_DESC(add, "Create RXE device over network interface");
+module_param_cb(remove, &rxe_remove_ops, NULL, 0200);
+MODULE_PARM_DESC(remove, "Remove RXE device over network interface");
diff --git a/drivers/infiniband/sw/rxe/rxe_task.c b/drivers/infiniband/sw/rxe/rxe_task.c
new file mode 100644
index 000000000000..1e19bf828a6e
--- /dev/null
+++ b/drivers/infiniband/sw/rxe/rxe_task.c
@@ -0,0 +1,154 @@
+/*
+ * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
+ * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/kernel.h>
+#include <linux/interrupt.h>
+#include <linux/hardirq.h>
+
+#include "rxe_task.h"
+
+int __rxe_do_task(struct rxe_task *task)
+
+{
+ int ret;
+
+ while ((ret = task->func(task->arg)) == 0)
+ ;
+
+ task->ret = ret;
+
+ return ret;
+}
+
+/*
+ * this locking is due to a potential race where
+ * a second caller finds the task already running
+ * but looks just after the last call to func
+ */
+void rxe_do_task(unsigned long data)
+{
+ int cont;
+ int ret;
+ unsigned long flags;
+ struct rxe_task *task = (struct rxe_task *)data;
+
+ spin_lock_irqsave(&task->state_lock, flags);
+ switch (task->state) {
+ case TASK_STATE_START:
+ task->state = TASK_STATE_BUSY;
+ spin_unlock_irqrestore(&task->state_lock, flags);
+ break;
+
+ case TASK_STATE_BUSY:
+ task->state = TASK_STATE_ARMED;
+ /* fall through to */
+ case TASK_STATE_ARMED:
+ spin_unlock_irqrestore(&task->state_lock, flags);
+ return;
+
+ default:
+ spin_unlock_irqrestore(&task->state_lock, flags);
+ pr_warn("bad state = %d in rxe_do_task\n", task->state);
+ return;
+ }
+
+ do {
+ cont = 0;
+ ret = task->func(task->arg);
+
+ spin_lock_irqsave(&task->state_lock, flags);
+ switch (task->state) {
+ case TASK_STATE_BUSY:
+ if (ret)
+ task->state = TASK_STATE_START;
+ else
+ cont = 1;
+ break;
+
+ /* soneone tried to run the task since the last time we called
+ * func, so we will call one more time regardless of the
+ * return value
+ */
+ case TASK_STATE_ARMED:
+ task->state = TASK_STATE_BUSY;
+ cont = 1;
+ break;
+
+ default:
+ pr_warn("bad state = %d in rxe_do_task\n",
+ task->state);
+ }
+ spin_unlock_irqrestore(&task->state_lock, flags);
+ } while (cont);
+
+ task->ret = ret;
+}
+
+int rxe_init_task(void *obj, struct rxe_task *task,
+ void *arg, int (*func)(void *), char *name)
+{
+ task->obj = obj;
+ task->arg = arg;
+ task->func = func;
+ snprintf(task->name, sizeof(task->name), "%s", name);
+
+ tasklet_init(&task->tasklet, rxe_do_task, (unsigned long)task);
+
+ task->state = TASK_STATE_START;
+ spin_lock_init(&task->state_lock);
+
+ return 0;
+}
+
+void rxe_cleanup_task(struct rxe_task *task)
+{
+ tasklet_kill(&task->tasklet);
+}
+
+void rxe_run_task(struct rxe_task *task, int sched)
+{
+ if (sched)
+ tasklet_schedule(&task->tasklet);
+ else
+ rxe_do_task((unsigned long)task);
+}
+
+void rxe_disable_task(struct rxe_task *task)
+{
+ tasklet_disable(&task->tasklet);
+}
+
+void rxe_enable_task(struct rxe_task *task)
+{
+ tasklet_enable(&task->tasklet);
+}
diff --git a/drivers/infiniband/sw/rxe/rxe_task.h b/drivers/infiniband/sw/rxe/rxe_task.h
new file mode 100644
index 000000000000..d14aa6daed05
--- /dev/null
+++ b/drivers/infiniband/sw/rxe/rxe_task.h
@@ -0,0 +1,95 @@
+/*
+ * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
+ * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef RXE_TASK_H
+#define RXE_TASK_H
+
+enum {
+ TASK_STATE_START = 0,
+ TASK_STATE_BUSY = 1,
+ TASK_STATE_ARMED = 2,
+};
+
+/*
+ * data structure to describe a 'task' which is a short
+ * function that returns 0 as long as it needs to be
+ * called again.
+ */
+struct rxe_task {
+ void *obj;
+ struct tasklet_struct tasklet;
+ int state;
+ spinlock_t state_lock; /* spinlock for task state */
+ void *arg;
+ int (*func)(void *arg);
+ int ret;
+ char name[16];
+};
+
+/*
+ * init rxe_task structure
+ * arg => parameter to pass to fcn
+ * fcn => function to call until it returns != 0
+ */
+int rxe_init_task(void *obj, struct rxe_task *task,
+ void *arg, int (*func)(void *), char *name);
+
+/* cleanup task */
+void rxe_cleanup_task(struct rxe_task *task);
+
+/*
+ * raw call to func in loop without any checking
+ * can call when tasklets are disabled
+ */
+int __rxe_do_task(struct rxe_task *task);
+
+/*
+ * common function called by any of the main tasklets
+ * If there is any chance that there is additional
+ * work to do someone must reschedule the task before
+ * leaving
+ */
+void rxe_do_task(unsigned long data);
+
+/* run a task, else schedule it to run as a tasklet, The decision
+ * to run or schedule tasklet is based on the parameter sched.
+ */
+void rxe_run_task(struct rxe_task *task, int sched);
+
+/* keep a task from scheduling */
+void rxe_disable_task(struct rxe_task *task);
+
+/* allow task to run */
+void rxe_enable_task(struct rxe_task *task);
+
+#endif /* RXE_TASK_H */
diff --git a/drivers/infiniband/sw/rxe/rxe_verbs.c b/drivers/infiniband/sw/rxe/rxe_verbs.c
new file mode 100644
index 000000000000..4552be960c6a
--- /dev/null
+++ b/drivers/infiniband/sw/rxe/rxe_verbs.c
@@ -0,0 +1,1330 @@
+/*
+ * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
+ * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include "rxe.h"
+#include "rxe_loc.h"
+#include "rxe_queue.h"
+
+static int rxe_query_device(struct ib_device *dev,
+ struct ib_device_attr *attr,
+ struct ib_udata *uhw)
+{
+ struct rxe_dev *rxe = to_rdev(dev);
+
+ if (uhw->inlen || uhw->outlen)
+ return -EINVAL;
+
+ *attr = rxe->attr;
+ return 0;
+}
+
+static void rxe_eth_speed_to_ib_speed(int speed, u8 *active_speed,
+ u8 *active_width)
+{
+ if (speed <= 1000) {
+ *active_width = IB_WIDTH_1X;
+ *active_speed = IB_SPEED_SDR;
+ } else if (speed <= 10000) {
+ *active_width = IB_WIDTH_1X;
+ *active_speed = IB_SPEED_FDR10;
+ } else if (speed <= 20000) {
+ *active_width = IB_WIDTH_4X;
+ *active_speed = IB_SPEED_DDR;
+ } else if (speed <= 30000) {
+ *active_width = IB_WIDTH_4X;
+ *active_speed = IB_SPEED_QDR;
+ } else if (speed <= 40000) {
+ *active_width = IB_WIDTH_4X;
+ *active_speed = IB_SPEED_FDR10;
+ } else {
+ *active_width = IB_WIDTH_4X;
+ *active_speed = IB_SPEED_EDR;
+ }
+}
+
+static int rxe_query_port(struct ib_device *dev,
+ u8 port_num, struct ib_port_attr *attr)
+{
+ struct rxe_dev *rxe = to_rdev(dev);
+ struct rxe_port *port;
+ u32 speed;
+
+ if (unlikely(port_num != 1)) {
+ pr_warn("invalid port_number %d\n", port_num);
+ goto err1;
+ }
+
+ port = &rxe->port;
+
+ *attr = port->attr;
+
+ mutex_lock(&rxe->usdev_lock);
+ if (rxe->ndev->ethtool_ops->get_link_ksettings) {
+ struct ethtool_link_ksettings ks;
+
+ rxe->ndev->ethtool_ops->get_link_ksettings(rxe->ndev, &ks);
+ speed = ks.base.speed;
+ } else if (rxe->ndev->ethtool_ops->get_settings) {
+ struct ethtool_cmd cmd;
+
+ rxe->ndev->ethtool_ops->get_settings(rxe->ndev, &cmd);
+ speed = cmd.speed;
+ } else {
+ pr_warn("%s speed is unknown, defaulting to 1000\n", rxe->ndev->name);
+ speed = 1000;
+ }
+ rxe_eth_speed_to_ib_speed(speed, &attr->active_speed, &attr->active_width);
+ mutex_unlock(&rxe->usdev_lock);
+
+ return 0;
+
+err1:
+ return -EINVAL;
+}
+
+static int rxe_query_gid(struct ib_device *device,
+ u8 port_num, int index, union ib_gid *gid)
+{
+ int ret;
+
+ if (index > RXE_PORT_GID_TBL_LEN)
+ return -EINVAL;
+
+ ret = ib_get_cached_gid(device, port_num, index, gid, NULL);
+ if (ret == -EAGAIN) {
+ memcpy(gid, &zgid, sizeof(*gid));
+ return 0;
+ }
+
+ return ret;
+}
+
+static int rxe_add_gid(struct ib_device *device, u8 port_num, unsigned int
+ index, const union ib_gid *gid,
+ const struct ib_gid_attr *attr, void **context)
+{
+ if (index >= RXE_PORT_GID_TBL_LEN)
+ return -EINVAL;
+ return 0;
+}
+
+static int rxe_del_gid(struct ib_device *device, u8 port_num, unsigned int
+ index, void **context)
+{
+ if (index >= RXE_PORT_GID_TBL_LEN)
+ return -EINVAL;
+ return 0;
+}
+
+static struct net_device *rxe_get_netdev(struct ib_device *device,
+ u8 port_num)
+{
+ struct rxe_dev *rxe = to_rdev(device);
+
+ if (rxe->ndev) {
+ dev_hold(rxe->ndev);
+ return rxe->ndev;
+ }
+
+ return NULL;
+}
+
+static int rxe_query_pkey(struct ib_device *device,
+ u8 port_num, u16 index, u16 *pkey)
+{
+ struct rxe_dev *rxe = to_rdev(device);
+ struct rxe_port *port;
+
+ if (unlikely(port_num != 1)) {
+ dev_warn(device->dma_device, "invalid port_num = %d\n",
+ port_num);
+ goto err1;
+ }
+
+ port = &rxe->port;
+
+ if (unlikely(index >= port->attr.pkey_tbl_len)) {
+ dev_warn(device->dma_device, "invalid index = %d\n",
+ index);
+ goto err1;
+ }
+
+ *pkey = port->pkey_tbl[index];
+ return 0;
+
+err1:
+ return -EINVAL;
+}
+
+static int rxe_modify_device(struct ib_device *dev,
+ int mask, struct ib_device_modify *attr)
+{
+ struct rxe_dev *rxe = to_rdev(dev);
+
+ if (mask & IB_DEVICE_MODIFY_SYS_IMAGE_GUID)
+ rxe->attr.sys_image_guid = cpu_to_be64(attr->sys_image_guid);
+
+ if (mask & IB_DEVICE_MODIFY_NODE_DESC) {
+ memcpy(rxe->ib_dev.node_desc,
+ attr->node_desc, sizeof(rxe->ib_dev.node_desc));
+ }
+
+ return 0;
+}
+
+static int rxe_modify_port(struct ib_device *dev,
+ u8 port_num, int mask, struct ib_port_modify *attr)
+{
+ struct rxe_dev *rxe = to_rdev(dev);
+ struct rxe_port *port;
+
+ if (unlikely(port_num != 1)) {
+ pr_warn("invalid port_num = %d\n", port_num);
+ goto err1;
+ }
+
+ port = &rxe->port;
+
+ port->attr.port_cap_flags |= attr->set_port_cap_mask;
+ port->attr.port_cap_flags &= ~attr->clr_port_cap_mask;
+
+ if (mask & IB_PORT_RESET_QKEY_CNTR)
+ port->attr.qkey_viol_cntr = 0;
+
+ return 0;
+
+err1:
+ return -EINVAL;
+}
+
+static enum rdma_link_layer rxe_get_link_layer(struct ib_device *dev,
+ u8 port_num)
+{
+ struct rxe_dev *rxe = to_rdev(dev);
+
+ return rxe->ifc_ops->link_layer(rxe, port_num);
+}
+
+static struct ib_ucontext *rxe_alloc_ucontext(struct ib_device *dev,
+ struct ib_udata *udata)
+{
+ struct rxe_dev *rxe = to_rdev(dev);
+ struct rxe_ucontext *uc;
+
+ uc = rxe_alloc(&rxe->uc_pool);
+ return uc ? &uc->ibuc : ERR_PTR(-ENOMEM);
+}
+
+static int rxe_dealloc_ucontext(struct ib_ucontext *ibuc)
+{
+ struct rxe_ucontext *uc = to_ruc(ibuc);
+
+ rxe_drop_ref(uc);
+ return 0;
+}
+
+static int rxe_port_immutable(struct ib_device *dev, u8 port_num,
+ struct ib_port_immutable *immutable)
+{
+ int err;
+ struct ib_port_attr attr;
+
+ err = rxe_query_port(dev, port_num, &attr);
+ if (err)
+ return err;
+
+ immutable->pkey_tbl_len = attr.pkey_tbl_len;
+ immutable->gid_tbl_len = attr.gid_tbl_len;
+ immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP;
+ immutable->max_mad_size = IB_MGMT_MAD_SIZE;
+
+ return 0;
+}
+
+static struct ib_pd *rxe_alloc_pd(struct ib_device *dev,
+ struct ib_ucontext *context,
+ struct ib_udata *udata)
+{
+ struct rxe_dev *rxe = to_rdev(dev);
+ struct rxe_pd *pd;
+
+ pd = rxe_alloc(&rxe->pd_pool);
+ return pd ? &pd->ibpd : ERR_PTR(-ENOMEM);
+}
+
+static int rxe_dealloc_pd(struct ib_pd *ibpd)
+{
+ struct rxe_pd *pd = to_rpd(ibpd);
+
+ rxe_drop_ref(pd);
+ return 0;
+}
+
+static int rxe_init_av(struct rxe_dev *rxe, struct ib_ah_attr *attr,
+ struct rxe_av *av)
+{
+ int err;
+ union ib_gid sgid;
+ struct ib_gid_attr sgid_attr;
+
+ err = ib_get_cached_gid(&rxe->ib_dev, attr->port_num,
+ attr->grh.sgid_index, &sgid,
+ &sgid_attr);
+ if (err) {
+ pr_err("Failed to query sgid. err = %d\n", err);
+ return err;
+ }
+
+ err = rxe_av_from_attr(rxe, attr->port_num, av, attr);
+ if (!err)
+ err = rxe_av_fill_ip_info(rxe, av, attr, &sgid_attr, &sgid);
+
+ if (sgid_attr.ndev)
+ dev_put(sgid_attr.ndev);
+ return err;
+}
+
+static struct ib_ah *rxe_create_ah(struct ib_pd *ibpd, struct ib_ah_attr *attr)
+{
+ int err;
+ struct rxe_dev *rxe = to_rdev(ibpd->device);
+ struct rxe_pd *pd = to_rpd(ibpd);
+ struct rxe_ah *ah;
+
+ err = rxe_av_chk_attr(rxe, attr);
+ if (err)
+ goto err1;
+
+ ah = rxe_alloc(&rxe->ah_pool);
+ if (!ah) {
+ err = -ENOMEM;
+ goto err1;
+ }
+
+ rxe_add_ref(pd);
+ ah->pd = pd;
+
+ err = rxe_init_av(rxe, attr, &ah->av);
+ if (err)
+ goto err2;
+
+ return &ah->ibah;
+
+err2:
+ rxe_drop_ref(pd);
+ rxe_drop_ref(ah);
+err1:
+ return ERR_PTR(err);
+}
+
+static int rxe_modify_ah(struct ib_ah *ibah, struct ib_ah_attr *attr)
+{
+ int err;
+ struct rxe_dev *rxe = to_rdev(ibah->device);
+ struct rxe_ah *ah = to_rah(ibah);
+
+ err = rxe_av_chk_attr(rxe, attr);
+ if (err)
+ return err;
+
+ err = rxe_init_av(rxe, attr, &ah->av);
+ if (err)
+ return err;
+
+ return 0;
+}
+
+static int rxe_query_ah(struct ib_ah *ibah, struct ib_ah_attr *attr)
+{
+ struct rxe_dev *rxe = to_rdev(ibah->device);
+ struct rxe_ah *ah = to_rah(ibah);
+
+ rxe_av_to_attr(rxe, &ah->av, attr);
+ return 0;
+}
+
+static int rxe_destroy_ah(struct ib_ah *ibah)
+{
+ struct rxe_ah *ah = to_rah(ibah);
+
+ rxe_drop_ref(ah->pd);
+ rxe_drop_ref(ah);
+ return 0;
+}
+
+static int post_one_recv(struct rxe_rq *rq, struct ib_recv_wr *ibwr)
+{
+ int err;
+ int i;
+ u32 length;
+ struct rxe_recv_wqe *recv_wqe;
+ int num_sge = ibwr->num_sge;
+
+ if (unlikely(queue_full(rq->queue))) {
+ err = -ENOMEM;
+ goto err1;
+ }
+
+ if (unlikely(num_sge > rq->max_sge)) {
+ err = -EINVAL;
+ goto err1;
+ }
+
+ length = 0;
+ for (i = 0; i < num_sge; i++)
+ length += ibwr->sg_list[i].length;
+
+ recv_wqe = producer_addr(rq->queue);
+ recv_wqe->wr_id = ibwr->wr_id;
+ recv_wqe->num_sge = num_sge;
+
+ memcpy(recv_wqe->dma.sge, ibwr->sg_list,
+ num_sge * sizeof(struct ib_sge));
+
+ recv_wqe->dma.length = length;
+ recv_wqe->dma.resid = length;
+ recv_wqe->dma.num_sge = num_sge;
+ recv_wqe->dma.cur_sge = 0;
+ recv_wqe->dma.sge_offset = 0;
+
+ /* make sure all changes to the work queue are written before we
+ * update the producer pointer
+ */
+ smp_wmb();
+
+ advance_producer(rq->queue);
+ return 0;
+
+err1:
+ return err;
+}
+
+static struct ib_srq *rxe_create_srq(struct ib_pd *ibpd,
+ struct ib_srq_init_attr *init,
+ struct ib_udata *udata)
+{
+ int err;
+ struct rxe_dev *rxe = to_rdev(ibpd->device);
+ struct rxe_pd *pd = to_rpd(ibpd);
+ struct rxe_srq *srq;
+ struct ib_ucontext *context = udata ? ibpd->uobject->context : NULL;
+
+ err = rxe_srq_chk_attr(rxe, NULL, &init->attr, IB_SRQ_INIT_MASK);
+ if (err)
+ goto err1;
+
+ srq = rxe_alloc(&rxe->srq_pool);
+ if (!srq) {
+ err = -ENOMEM;
+ goto err1;
+ }
+
+ rxe_add_index(srq);
+ rxe_add_ref(pd);
+ srq->pd = pd;
+
+ err = rxe_srq_from_init(rxe, srq, init, context, udata);
+ if (err)
+ goto err2;
+
+ return &srq->ibsrq;
+
+err2:
+ rxe_drop_ref(pd);
+ rxe_drop_index(srq);
+ rxe_drop_ref(srq);
+err1:
+ return ERR_PTR(err);
+}
+
+static int rxe_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
+ enum ib_srq_attr_mask mask,
+ struct ib_udata *udata)
+{
+ int err;
+ struct rxe_srq *srq = to_rsrq(ibsrq);
+ struct rxe_dev *rxe = to_rdev(ibsrq->device);
+
+ err = rxe_srq_chk_attr(rxe, srq, attr, mask);
+ if (err)
+ goto err1;
+
+ err = rxe_srq_from_attr(rxe, srq, attr, mask, udata);
+ if (err)
+ goto err1;
+
+ return 0;
+
+err1:
+ return err;
+}
+
+static int rxe_query_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr)
+{
+ struct rxe_srq *srq = to_rsrq(ibsrq);
+
+ if (srq->error)
+ return -EINVAL;
+
+ attr->max_wr = srq->rq.queue->buf->index_mask;
+ attr->max_sge = srq->rq.max_sge;
+ attr->srq_limit = srq->limit;
+ return 0;
+}
+
+static int rxe_destroy_srq(struct ib_srq *ibsrq)
+{
+ struct rxe_srq *srq = to_rsrq(ibsrq);
+
+ if (srq->rq.queue)
+ rxe_queue_cleanup(srq->rq.queue);
+
+ rxe_drop_ref(srq->pd);
+ rxe_drop_index(srq);
+ rxe_drop_ref(srq);
+
+ return 0;
+}
+
+static int rxe_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr,
+ struct ib_recv_wr **bad_wr)
+{
+ int err = 0;
+ unsigned long flags;
+ struct rxe_srq *srq = to_rsrq(ibsrq);
+
+ spin_lock_irqsave(&srq->rq.producer_lock, flags);
+
+ while (wr) {
+ err = post_one_recv(&srq->rq, wr);
+ if (unlikely(err))
+ break;
+ wr = wr->next;
+ }
+
+ spin_unlock_irqrestore(&srq->rq.producer_lock, flags);
+
+ if (err)
+ *bad_wr = wr;
+
+ return err;
+}
+
+static struct ib_qp *rxe_create_qp(struct ib_pd *ibpd,
+ struct ib_qp_init_attr *init,
+ struct ib_udata *udata)
+{
+ int err;
+ struct rxe_dev *rxe = to_rdev(ibpd->device);
+ struct rxe_pd *pd = to_rpd(ibpd);
+ struct rxe_qp *qp;
+
+ err = rxe_qp_chk_init(rxe, init);
+ if (err)
+ goto err1;
+
+ qp = rxe_alloc(&rxe->qp_pool);
+ if (!qp) {
+ err = -ENOMEM;
+ goto err1;
+ }
+
+ if (udata) {
+ if (udata->inlen) {
+ err = -EINVAL;
+ goto err1;
+ }
+ qp->is_user = 1;
+ }
+
+ rxe_add_index(qp);
+
+ err = rxe_qp_from_init(rxe, qp, pd, init, udata, ibpd);
+ if (err)
+ goto err2;
+
+ return &qp->ibqp;
+
+err2:
+ rxe_drop_index(qp);
+ rxe_drop_ref(qp);
+err1:
+ return ERR_PTR(err);
+}
+
+static int rxe_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
+ int mask, struct ib_udata *udata)
+{
+ int err;
+ struct rxe_dev *rxe = to_rdev(ibqp->device);
+ struct rxe_qp *qp = to_rqp(ibqp);
+
+ err = rxe_qp_chk_attr(rxe, qp, attr, mask);
+ if (err)
+ goto err1;
+
+ err = rxe_qp_from_attr(qp, attr, mask, udata);
+ if (err)
+ goto err1;
+
+ return 0;
+
+err1:
+ return err;
+}
+
+static int rxe_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
+ int mask, struct ib_qp_init_attr *init)
+{
+ struct rxe_qp *qp = to_rqp(ibqp);
+
+ rxe_qp_to_init(qp, init);
+ rxe_qp_to_attr(qp, attr, mask);
+
+ return 0;
+}
+
+static int rxe_destroy_qp(struct ib_qp *ibqp)
+{
+ struct rxe_qp *qp = to_rqp(ibqp);
+
+ rxe_qp_destroy(qp);
+ rxe_drop_index(qp);
+ rxe_drop_ref(qp);
+ return 0;
+}
+
+static int validate_send_wr(struct rxe_qp *qp, struct ib_send_wr *ibwr,
+ unsigned int mask, unsigned int length)
+{
+ int num_sge = ibwr->num_sge;
+ struct rxe_sq *sq = &qp->sq;
+
+ if (unlikely(num_sge > sq->max_sge))
+ goto err1;
+
+ if (unlikely(mask & WR_ATOMIC_MASK)) {
+ if (length < 8)
+ goto err1;
+
+ if (atomic_wr(ibwr)->remote_addr & 0x7)
+ goto err1;
+ }
+
+ if (unlikely((ibwr->send_flags & IB_SEND_INLINE) &&
+ (length > sq->max_inline)))
+ goto err1;
+
+ return 0;
+
+err1:
+ return -EINVAL;
+}
+
+static void init_send_wr(struct rxe_qp *qp, struct rxe_send_wr *wr,
+ struct ib_send_wr *ibwr)
+{
+ wr->wr_id = ibwr->wr_id;
+ wr->num_sge = ibwr->num_sge;
+ wr->opcode = ibwr->opcode;
+ wr->send_flags = ibwr->send_flags;
+
+ if (qp_type(qp) == IB_QPT_UD ||
+ qp_type(qp) == IB_QPT_SMI ||
+ qp_type(qp) == IB_QPT_GSI) {
+ wr->wr.ud.remote_qpn = ud_wr(ibwr)->remote_qpn;
+ wr->wr.ud.remote_qkey = ud_wr(ibwr)->remote_qkey;
+ if (qp_type(qp) == IB_QPT_GSI)
+ wr->wr.ud.pkey_index = ud_wr(ibwr)->pkey_index;
+ if (wr->opcode == IB_WR_SEND_WITH_IMM)
+ wr->ex.imm_data = ibwr->ex.imm_data;
+ } else {
+ switch (wr->opcode) {
+ case IB_WR_RDMA_WRITE_WITH_IMM:
+ wr->ex.imm_data = ibwr->ex.imm_data;
+ case IB_WR_RDMA_READ:
+ case IB_WR_RDMA_WRITE:
+ wr->wr.rdma.remote_addr = rdma_wr(ibwr)->remote_addr;
+ wr->wr.rdma.rkey = rdma_wr(ibwr)->rkey;
+ break;
+ case IB_WR_SEND_WITH_IMM:
+ wr->ex.imm_data = ibwr->ex.imm_data;
+ break;
+ case IB_WR_SEND_WITH_INV:
+ wr->ex.invalidate_rkey = ibwr->ex.invalidate_rkey;
+ break;
+ case IB_WR_ATOMIC_CMP_AND_SWP:
+ case IB_WR_ATOMIC_FETCH_AND_ADD:
+ wr->wr.atomic.remote_addr =
+ atomic_wr(ibwr)->remote_addr;
+ wr->wr.atomic.compare_add =
+ atomic_wr(ibwr)->compare_add;
+ wr->wr.atomic.swap = atomic_wr(ibwr)->swap;
+ wr->wr.atomic.rkey = atomic_wr(ibwr)->rkey;
+ break;
+ case IB_WR_LOCAL_INV:
+ wr->ex.invalidate_rkey = ibwr->ex.invalidate_rkey;
+ break;
+ case IB_WR_REG_MR:
+ wr->wr.reg.mr = reg_wr(ibwr)->mr;
+ wr->wr.reg.key = reg_wr(ibwr)->key;
+ wr->wr.reg.access = reg_wr(ibwr)->access;
+ break;
+ default:
+ break;
+ }
+ }
+}
+
+static int init_send_wqe(struct rxe_qp *qp, struct ib_send_wr *ibwr,
+ unsigned int mask, unsigned int length,
+ struct rxe_send_wqe *wqe)
+{
+ int num_sge = ibwr->num_sge;
+ struct ib_sge *sge;
+ int i;
+ u8 *p;
+
+ init_send_wr(qp, &wqe->wr, ibwr);
+
+ if (qp_type(qp) == IB_QPT_UD ||
+ qp_type(qp) == IB_QPT_SMI ||
+ qp_type(qp) == IB_QPT_GSI)
+ memcpy(&wqe->av, &to_rah(ud_wr(ibwr)->ah)->av, sizeof(wqe->av));
+
+ if (unlikely(ibwr->send_flags & IB_SEND_INLINE)) {
+ p = wqe->dma.inline_data;
+
+ sge = ibwr->sg_list;
+ for (i = 0; i < num_sge; i++, sge++) {
+ if (qp->is_user && copy_from_user(p, (__user void *)
+ (uintptr_t)sge->addr, sge->length))
+ return -EFAULT;
+
+ else if (!qp->is_user)
+ memcpy(p, (void *)(uintptr_t)sge->addr,
+ sge->length);
+
+ p += sge->length;
+ }
+ } else if (mask & WR_REG_MASK) {
+ wqe->mask = mask;
+ wqe->state = wqe_state_posted;
+ return 0;
+ } else
+ memcpy(wqe->dma.sge, ibwr->sg_list,
+ num_sge * sizeof(struct ib_sge));
+
+ wqe->iova = (mask & WR_ATOMIC_MASK) ?
+ atomic_wr(ibwr)->remote_addr :
+ rdma_wr(ibwr)->remote_addr;
+ wqe->mask = mask;
+ wqe->dma.length = length;
+ wqe->dma.resid = length;
+ wqe->dma.num_sge = num_sge;
+ wqe->dma.cur_sge = 0;
+ wqe->dma.sge_offset = 0;
+ wqe->state = wqe_state_posted;
+ wqe->ssn = atomic_add_return(1, &qp->ssn);
+
+ return 0;
+}
+
+static int post_one_send(struct rxe_qp *qp, struct ib_send_wr *ibwr,
+ unsigned mask, u32 length)
+{
+ int err;
+ struct rxe_sq *sq = &qp->sq;
+ struct rxe_send_wqe *send_wqe;
+ unsigned long flags;
+
+ err = validate_send_wr(qp, ibwr, mask, length);
+ if (err)
+ return err;
+
+ spin_lock_irqsave(&qp->sq.sq_lock, flags);
+
+ if (unlikely(queue_full(sq->queue))) {
+ err = -ENOMEM;
+ goto err1;
+ }
+
+ send_wqe = producer_addr(sq->queue);
+
+ err = init_send_wqe(qp, ibwr, mask, length, send_wqe);
+ if (unlikely(err))
+ goto err1;
+
+ /*
+ * make sure all changes to the work queue are
+ * written before we update the producer pointer
+ */
+ smp_wmb();
+
+ advance_producer(sq->queue);
+ spin_unlock_irqrestore(&qp->sq.sq_lock, flags);
+
+ return 0;
+
+err1:
+ spin_unlock_irqrestore(&qp->sq.sq_lock, flags);
+ return err;
+}
+
+static int rxe_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
+ struct ib_send_wr **bad_wr)
+{
+ int err = 0;
+ struct rxe_qp *qp = to_rqp(ibqp);
+ unsigned int mask;
+ unsigned int length = 0;
+ int i;
+ int must_sched;
+
+ if (unlikely(!qp->valid)) {
+ *bad_wr = wr;
+ return -EINVAL;
+ }
+
+ if (unlikely(qp->req.state < QP_STATE_READY)) {
+ *bad_wr = wr;
+ return -EINVAL;
+ }
+
+ while (wr) {
+ mask = wr_opcode_mask(wr->opcode, qp);
+ if (unlikely(!mask)) {
+ err = -EINVAL;
+ *bad_wr = wr;
+ break;
+ }
+
+ if (unlikely((wr->send_flags & IB_SEND_INLINE) &&
+ !(mask & WR_INLINE_MASK))) {
+ err = -EINVAL;
+ *bad_wr = wr;
+ break;
+ }
+
+ length = 0;
+ for (i = 0; i < wr->num_sge; i++)
+ length += wr->sg_list[i].length;
+
+ err = post_one_send(qp, wr, mask, length);
+
+ if (err) {
+ *bad_wr = wr;
+ break;
+ }
+ wr = wr->next;
+ }
+
+ /*
+ * Must sched in case of GSI QP because ib_send_mad() hold irq lock,
+ * and the requester call ip_local_out_sk() that takes spin_lock_bh.
+ */
+ must_sched = (qp_type(qp) == IB_QPT_GSI) ||
+ (queue_count(qp->sq.queue) > 1);
+
+ rxe_run_task(&qp->req.task, must_sched);
+
+ return err;
+}
+
+static int rxe_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
+ struct ib_recv_wr **bad_wr)
+{
+ int err = 0;
+ struct rxe_qp *qp = to_rqp(ibqp);
+ struct rxe_rq *rq = &qp->rq;
+ unsigned long flags;
+
+ if (unlikely((qp_state(qp) < IB_QPS_INIT) || !qp->valid)) {
+ *bad_wr = wr;
+ err = -EINVAL;
+ goto err1;
+ }
+
+ if (unlikely(qp->srq)) {
+ *bad_wr = wr;
+ err = -EINVAL;
+ goto err1;
+ }
+
+ spin_lock_irqsave(&rq->producer_lock, flags);
+
+ while (wr) {
+ err = post_one_recv(rq, wr);
+ if (unlikely(err)) {
+ *bad_wr = wr;
+ break;
+ }
+ wr = wr->next;
+ }
+
+ spin_unlock_irqrestore(&rq->producer_lock, flags);
+
+err1:
+ return err;
+}
+
+static struct ib_cq *rxe_create_cq(struct ib_device *dev,
+ const struct ib_cq_init_attr *attr,
+ struct ib_ucontext *context,
+ struct ib_udata *udata)
+{
+ int err;
+ struct rxe_dev *rxe = to_rdev(dev);
+ struct rxe_cq *cq;
+
+ if (attr->flags)
+ return ERR_PTR(-EINVAL);
+
+ err = rxe_cq_chk_attr(rxe, NULL, attr->cqe, attr->comp_vector, udata);
+ if (err)
+ goto err1;
+
+ cq = rxe_alloc(&rxe->cq_pool);
+ if (!cq) {
+ err = -ENOMEM;
+ goto err1;
+ }
+
+ err = rxe_cq_from_init(rxe, cq, attr->cqe, attr->comp_vector,
+ context, udata);
+ if (err)
+ goto err2;
+
+ return &cq->ibcq;
+
+err2:
+ rxe_drop_ref(cq);
+err1:
+ return ERR_PTR(err);
+}
+
+static int rxe_destroy_cq(struct ib_cq *ibcq)
+{
+ struct rxe_cq *cq = to_rcq(ibcq);
+
+ rxe_drop_ref(cq);
+ return 0;
+}
+
+static int rxe_resize_cq(struct ib_cq *ibcq, int cqe, struct ib_udata *udata)
+{
+ int err;
+ struct rxe_cq *cq = to_rcq(ibcq);
+ struct rxe_dev *rxe = to_rdev(ibcq->device);
+
+ err = rxe_cq_chk_attr(rxe, cq, cqe, 0, udata);
+ if (err)
+ goto err1;
+
+ err = rxe_cq_resize_queue(cq, cqe, udata);
+ if (err)
+ goto err1;
+
+ return 0;
+
+err1:
+ return err;
+}
+
+static int rxe_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc)
+{
+ int i;
+ struct rxe_cq *cq = to_rcq(ibcq);
+ struct rxe_cqe *cqe;
+ unsigned long flags;
+
+ spin_lock_irqsave(&cq->cq_lock, flags);
+ for (i = 0; i < num_entries; i++) {
+ cqe = queue_head(cq->queue);
+ if (!cqe)
+ break;
+
+ memcpy(wc++, &cqe->ibwc, sizeof(*wc));
+ advance_consumer(cq->queue);
+ }
+ spin_unlock_irqrestore(&cq->cq_lock, flags);
+
+ return i;
+}
+
+static int rxe_peek_cq(struct ib_cq *ibcq, int wc_cnt)
+{
+ struct rxe_cq *cq = to_rcq(ibcq);
+ int count = queue_count(cq->queue);
+
+ return (count > wc_cnt) ? wc_cnt : count;
+}
+
+static int rxe_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags)
+{
+ struct rxe_cq *cq = to_rcq(ibcq);
+
+ if (cq->notify != IB_CQ_NEXT_COMP)
+ cq->notify = flags & IB_CQ_SOLICITED_MASK;
+
+ return 0;
+}
+
+static struct ib_mr *rxe_get_dma_mr(struct ib_pd *ibpd, int access)
+{
+ struct rxe_dev *rxe = to_rdev(ibpd->device);
+ struct rxe_pd *pd = to_rpd(ibpd);
+ struct rxe_mem *mr;
+ int err;
+
+ mr = rxe_alloc(&rxe->mr_pool);
+ if (!mr) {
+ err = -ENOMEM;
+ goto err1;
+ }
+
+ rxe_add_index(mr);
+
+ rxe_add_ref(pd);
+
+ err = rxe_mem_init_dma(rxe, pd, access, mr);
+ if (err)
+ goto err2;
+
+ return &mr->ibmr;
+
+err2:
+ rxe_drop_ref(pd);
+ rxe_drop_index(mr);
+ rxe_drop_ref(mr);
+err1:
+ return ERR_PTR(err);
+}
+
+static struct ib_mr *rxe_reg_user_mr(struct ib_pd *ibpd,
+ u64 start,
+ u64 length,
+ u64 iova,
+ int access, struct ib_udata *udata)
+{
+ int err;
+ struct rxe_dev *rxe = to_rdev(ibpd->device);
+ struct rxe_pd *pd = to_rpd(ibpd);
+ struct rxe_mem *mr;
+
+ mr = rxe_alloc(&rxe->mr_pool);
+ if (!mr) {
+ err = -ENOMEM;
+ goto err2;
+ }
+
+ rxe_add_index(mr);
+
+ rxe_add_ref(pd);
+
+ err = rxe_mem_init_user(rxe, pd, start, length, iova,
+ access, udata, mr);
+ if (err)
+ goto err3;
+
+ return &mr->ibmr;
+
+err3:
+ rxe_drop_ref(pd);
+ rxe_drop_index(mr);
+ rxe_drop_ref(mr);
+err2:
+ return ERR_PTR(err);
+}
+
+static int rxe_dereg_mr(struct ib_mr *ibmr)
+{
+ struct rxe_mem *mr = to_rmr(ibmr);
+
+ mr->state = RXE_MEM_STATE_ZOMBIE;
+ rxe_drop_ref(mr->pd);
+ rxe_drop_index(mr);
+ rxe_drop_ref(mr);
+ return 0;
+}
+
+static struct ib_mr *rxe_alloc_mr(struct ib_pd *ibpd,
+ enum ib_mr_type mr_type,
+ u32 max_num_sg)
+{
+ struct rxe_dev *rxe = to_rdev(ibpd->device);
+ struct rxe_pd *pd = to_rpd(ibpd);
+ struct rxe_mem *mr;
+ int err;
+
+ if (mr_type != IB_MR_TYPE_MEM_REG)
+ return ERR_PTR(-EINVAL);
+
+ mr = rxe_alloc(&rxe->mr_pool);
+ if (!mr) {
+ err = -ENOMEM;
+ goto err1;
+ }
+
+ rxe_add_index(mr);
+
+ rxe_add_ref(pd);
+
+ err = rxe_mem_init_fast(rxe, pd, max_num_sg, mr);
+ if (err)
+ goto err2;
+
+ return &mr->ibmr;
+
+err2:
+ rxe_drop_ref(pd);
+ rxe_drop_index(mr);
+ rxe_drop_ref(mr);
+err1:
+ return ERR_PTR(err);
+}
+
+static int rxe_set_page(struct ib_mr *ibmr, u64 addr)
+{
+ struct rxe_mem *mr = to_rmr(ibmr);
+ struct rxe_map *map;
+ struct rxe_phys_buf *buf;
+
+ if (unlikely(mr->nbuf == mr->num_buf))
+ return -ENOMEM;
+
+ map = mr->map[mr->nbuf / RXE_BUF_PER_MAP];
+ buf = &map->buf[mr->nbuf % RXE_BUF_PER_MAP];
+
+ buf->addr = addr;
+ buf->size = ibmr->page_size;
+ mr->nbuf++;
+
+ return 0;
+}
+
+static int rxe_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg, int sg_nents,
+ unsigned int *sg_offset)
+{
+ struct rxe_mem *mr = to_rmr(ibmr);
+ int n;
+
+ mr->nbuf = 0;
+
+ n = ib_sg_to_pages(ibmr, sg, sg_nents, sg_offset, rxe_set_page);
+
+ mr->va = ibmr->iova;
+ mr->iova = ibmr->iova;
+ mr->length = ibmr->length;
+ mr->page_shift = ilog2(ibmr->page_size);
+ mr->page_mask = ibmr->page_size - 1;
+ mr->offset = mr->iova & mr->page_mask;
+
+ return n;
+}
+
+static int rxe_attach_mcast(struct ib_qp *ibqp, union ib_gid *mgid, u16 mlid)
+{
+ int err;
+ struct rxe_dev *rxe = to_rdev(ibqp->device);
+ struct rxe_qp *qp = to_rqp(ibqp);
+ struct rxe_mc_grp *grp;
+
+ /* takes a ref on grp if successful */
+ err = rxe_mcast_get_grp(rxe, mgid, &grp);
+ if (err)
+ return err;
+
+ err = rxe_mcast_add_grp_elem(rxe, qp, grp);
+
+ rxe_drop_ref(grp);
+ return err;
+}
+
+static int rxe_detach_mcast(struct ib_qp *ibqp, union ib_gid *mgid, u16 mlid)
+{
+ struct rxe_dev *rxe = to_rdev(ibqp->device);
+ struct rxe_qp *qp = to_rqp(ibqp);
+
+ return rxe_mcast_drop_grp_elem(rxe, qp, mgid);
+}
+
+static ssize_t rxe_show_parent(struct device *device,
+ struct device_attribute *attr, char *buf)
+{
+ struct rxe_dev *rxe = container_of(device, struct rxe_dev,
+ ib_dev.dev);
+ char *name;
+
+ name = rxe->ifc_ops->parent_name(rxe, 1);
+ return snprintf(buf, 16, "%s\n", name);
+}
+
+static DEVICE_ATTR(parent, S_IRUGO, rxe_show_parent, NULL);
+
+static struct device_attribute *rxe_dev_attributes[] = {
+ &dev_attr_parent,
+};
+
+int rxe_register_device(struct rxe_dev *rxe)
+{
+ int err;
+ int i;
+ struct ib_device *dev = &rxe->ib_dev;
+
+ strlcpy(dev->name, "rxe%d", IB_DEVICE_NAME_MAX);
+ strlcpy(dev->node_desc, "rxe", sizeof(dev->node_desc));
+
+ dev->owner = THIS_MODULE;
+ dev->node_type = RDMA_NODE_IB_CA;
+ dev->phys_port_cnt = 1;
+ dev->num_comp_vectors = RXE_NUM_COMP_VECTORS;
+ dev->dma_device = rxe->ifc_ops->dma_device(rxe);
+ dev->local_dma_lkey = 0;
+ dev->node_guid = rxe->ifc_ops->node_guid(rxe);
+ dev->dma_ops = &rxe_dma_mapping_ops;
+
+ dev->uverbs_abi_ver = RXE_UVERBS_ABI_VERSION;
+ dev->uverbs_cmd_mask = BIT_ULL(IB_USER_VERBS_CMD_GET_CONTEXT)
+ | BIT_ULL(IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL)
+ | BIT_ULL(IB_USER_VERBS_CMD_QUERY_DEVICE)
+ | BIT_ULL(IB_USER_VERBS_CMD_QUERY_PORT)
+ | BIT_ULL(IB_USER_VERBS_CMD_ALLOC_PD)
+ | BIT_ULL(IB_USER_VERBS_CMD_DEALLOC_PD)
+ | BIT_ULL(IB_USER_VERBS_CMD_CREATE_SRQ)
+ | BIT_ULL(IB_USER_VERBS_CMD_MODIFY_SRQ)
+ | BIT_ULL(IB_USER_VERBS_CMD_QUERY_SRQ)
+ | BIT_ULL(IB_USER_VERBS_CMD_DESTROY_SRQ)
+ | BIT_ULL(IB_USER_VERBS_CMD_POST_SRQ_RECV)
+ | BIT_ULL(IB_USER_VERBS_CMD_CREATE_QP)
+ | BIT_ULL(IB_USER_VERBS_CMD_MODIFY_QP)
+ | BIT_ULL(IB_USER_VERBS_CMD_QUERY_QP)
+ | BIT_ULL(IB_USER_VERBS_CMD_DESTROY_QP)
+ | BIT_ULL(IB_USER_VERBS_CMD_POST_SEND)
+ | BIT_ULL(IB_USER_VERBS_CMD_POST_RECV)
+ | BIT_ULL(IB_USER_VERBS_CMD_CREATE_CQ)
+ | BIT_ULL(IB_USER_VERBS_CMD_RESIZE_CQ)
+ | BIT_ULL(IB_USER_VERBS_CMD_DESTROY_CQ)
+ | BIT_ULL(IB_USER_VERBS_CMD_POLL_CQ)
+ | BIT_ULL(IB_USER_VERBS_CMD_PEEK_CQ)
+ | BIT_ULL(IB_USER_VERBS_CMD_REQ_NOTIFY_CQ)
+ | BIT_ULL(IB_USER_VERBS_CMD_REG_MR)
+ | BIT_ULL(IB_USER_VERBS_CMD_DEREG_MR)
+ | BIT_ULL(IB_USER_VERBS_CMD_CREATE_AH)
+ | BIT_ULL(IB_USER_VERBS_CMD_MODIFY_AH)
+ | BIT_ULL(IB_USER_VERBS_CMD_QUERY_AH)
+ | BIT_ULL(IB_USER_VERBS_CMD_DESTROY_AH)
+ | BIT_ULL(IB_USER_VERBS_CMD_ATTACH_MCAST)
+ | BIT_ULL(IB_USER_VERBS_CMD_DETACH_MCAST)
+ ;
+
+ dev->query_device = rxe_query_device;
+ dev->modify_device = rxe_modify_device;
+ dev->query_port = rxe_query_port;
+ dev->modify_port = rxe_modify_port;
+ dev->get_link_layer = rxe_get_link_layer;
+ dev->query_gid = rxe_query_gid;
+ dev->get_netdev = rxe_get_netdev;
+ dev->add_gid = rxe_add_gid;
+ dev->del_gid = rxe_del_gid;
+ dev->query_pkey = rxe_query_pkey;
+ dev->alloc_ucontext = rxe_alloc_ucontext;
+ dev->dealloc_ucontext = rxe_dealloc_ucontext;
+ dev->mmap = rxe_mmap;
+ dev->get_port_immutable = rxe_port_immutable;
+ dev->alloc_pd = rxe_alloc_pd;
+ dev->dealloc_pd = rxe_dealloc_pd;
+ dev->create_ah = rxe_create_ah;
+ dev->modify_ah = rxe_modify_ah;
+ dev->query_ah = rxe_query_ah;
+ dev->destroy_ah = rxe_destroy_ah;
+ dev->create_srq = rxe_create_srq;
+ dev->modify_srq = rxe_modify_srq;
+ dev->query_srq = rxe_query_srq;
+ dev->destroy_srq = rxe_destroy_srq;
+ dev->post_srq_recv = rxe_post_srq_recv;
+ dev->create_qp = rxe_create_qp;
+ dev->modify_qp = rxe_modify_qp;
+ dev->query_qp = rxe_query_qp;
+ dev->destroy_qp = rxe_destroy_qp;
+ dev->post_send = rxe_post_send;
+ dev->post_recv = rxe_post_recv;
+ dev->create_cq = rxe_create_cq;
+ dev->destroy_cq = rxe_destroy_cq;
+ dev->resize_cq = rxe_resize_cq;
+ dev->poll_cq = rxe_poll_cq;
+ dev->peek_cq = rxe_peek_cq;
+ dev->req_notify_cq = rxe_req_notify_cq;
+ dev->get_dma_mr = rxe_get_dma_mr;
+ dev->reg_user_mr = rxe_reg_user_mr;
+ dev->dereg_mr = rxe_dereg_mr;
+ dev->alloc_mr = rxe_alloc_mr;
+ dev->map_mr_sg = rxe_map_mr_sg;
+ dev->attach_mcast = rxe_attach_mcast;
+ dev->detach_mcast = rxe_detach_mcast;
+
+ err = ib_register_device(dev, NULL);
+ if (err) {
+ pr_warn("rxe_register_device failed, err = %d\n", err);
+ goto err1;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(rxe_dev_attributes); ++i) {
+ err = device_create_file(&dev->dev, rxe_dev_attributes[i]);
+ if (err) {
+ pr_warn("device_create_file failed, i = %d, err = %d\n",
+ i, err);
+ goto err2;
+ }
+ }
+
+ return 0;
+
+err2:
+ ib_unregister_device(dev);
+err1:
+ return err;
+}
+
+int rxe_unregister_device(struct rxe_dev *rxe)
+{
+ int i;
+ struct ib_device *dev = &rxe->ib_dev;
+
+ for (i = 0; i < ARRAY_SIZE(rxe_dev_attributes); ++i)
+ device_remove_file(&dev->dev, rxe_dev_attributes[i]);
+
+ ib_unregister_device(dev);
+
+ return 0;
+}
diff --git a/drivers/infiniband/sw/rxe/rxe_verbs.h b/drivers/infiniband/sw/rxe/rxe_verbs.h
new file mode 100644
index 000000000000..cac1d52a08f0
--- /dev/null
+++ b/drivers/infiniband/sw/rxe/rxe_verbs.h
@@ -0,0 +1,480 @@
+/*
+ * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
+ * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef RXE_VERBS_H
+#define RXE_VERBS_H
+
+#include <linux/interrupt.h>
+#include <rdma/rdma_user_rxe.h>
+#include "rxe_pool.h"
+#include "rxe_task.h"
+
+static inline int pkey_match(u16 key1, u16 key2)
+{
+ return (((key1 & 0x7fff) != 0) &&
+ ((key1 & 0x7fff) == (key2 & 0x7fff)) &&
+ ((key1 & 0x8000) || (key2 & 0x8000))) ? 1 : 0;
+}
+
+/* Return >0 if psn_a > psn_b
+ * 0 if psn_a == psn_b
+ * <0 if psn_a < psn_b
+ */
+static inline int psn_compare(u32 psn_a, u32 psn_b)
+{
+ s32 diff;
+
+ diff = (psn_a - psn_b) << 8;
+ return diff;
+}
+
+struct rxe_ucontext {
+ struct rxe_pool_entry pelem;
+ struct ib_ucontext ibuc;
+};
+
+struct rxe_pd {
+ struct rxe_pool_entry pelem;
+ struct ib_pd ibpd;
+};
+
+struct rxe_ah {
+ struct rxe_pool_entry pelem;
+ struct ib_ah ibah;
+ struct rxe_pd *pd;
+ struct rxe_av av;
+};
+
+struct rxe_cqe {
+ union {
+ struct ib_wc ibwc;
+ struct ib_uverbs_wc uibwc;
+ };
+};
+
+struct rxe_cq {
+ struct rxe_pool_entry pelem;
+ struct ib_cq ibcq;
+ struct rxe_queue *queue;
+ spinlock_t cq_lock;
+ u8 notify;
+ int is_user;
+ struct tasklet_struct comp_task;
+};
+
+enum wqe_state {
+ wqe_state_posted,
+ wqe_state_processing,
+ wqe_state_pending,
+ wqe_state_done,
+ wqe_state_error,
+};
+
+struct rxe_sq {
+ int max_wr;
+ int max_sge;
+ int max_inline;
+ spinlock_t sq_lock; /* guard queue */
+ struct rxe_queue *queue;
+};
+
+struct rxe_rq {
+ int max_wr;
+ int max_sge;
+ spinlock_t producer_lock; /* guard queue producer */
+ spinlock_t consumer_lock; /* guard queue consumer */
+ struct rxe_queue *queue;
+};
+
+struct rxe_srq {
+ struct rxe_pool_entry pelem;
+ struct ib_srq ibsrq;
+ struct rxe_pd *pd;
+ struct rxe_rq rq;
+ u32 srq_num;
+
+ int limit;
+ int error;
+};
+
+enum rxe_qp_state {
+ QP_STATE_RESET,
+ QP_STATE_INIT,
+ QP_STATE_READY,
+ QP_STATE_DRAIN, /* req only */
+ QP_STATE_DRAINED, /* req only */
+ QP_STATE_ERROR
+};
+
+extern char *rxe_qp_state_name[];
+
+struct rxe_req_info {
+ enum rxe_qp_state state;
+ int wqe_index;
+ u32 psn;
+ int opcode;
+ atomic_t rd_atomic;
+ int wait_fence;
+ int need_rd_atomic;
+ int wait_psn;
+ int need_retry;
+ int noack_pkts;
+ struct rxe_task task;
+};
+
+struct rxe_comp_info {
+ u32 psn;
+ int opcode;
+ int timeout;
+ int timeout_retry;
+ u32 retry_cnt;
+ u32 rnr_retry;
+ struct rxe_task task;
+};
+
+enum rdatm_res_state {
+ rdatm_res_state_next,
+ rdatm_res_state_new,
+ rdatm_res_state_replay,
+};
+
+struct resp_res {
+ int type;
+ u32 first_psn;
+ u32 last_psn;
+ u32 cur_psn;
+ enum rdatm_res_state state;
+
+ union {
+ struct {
+ struct sk_buff *skb;
+ } atomic;
+ struct {
+ struct rxe_mem *mr;
+ u64 va_org;
+ u32 rkey;
+ u32 length;
+ u64 va;
+ u32 resid;
+ } read;
+ };
+};
+
+struct rxe_resp_info {
+ enum rxe_qp_state state;
+ u32 msn;
+ u32 psn;
+ int opcode;
+ int drop_msg;
+ int goto_error;
+ int sent_psn_nak;
+ enum ib_wc_status status;
+ u8 aeth_syndrome;
+
+ /* Receive only */
+ struct rxe_recv_wqe *wqe;
+
+ /* RDMA read / atomic only */
+ u64 va;
+ struct rxe_mem *mr;
+ u32 resid;
+ u32 rkey;
+ u64 atomic_orig;
+
+ /* SRQ only */
+ struct {
+ struct rxe_recv_wqe wqe;
+ struct ib_sge sge[RXE_MAX_SGE];
+ } srq_wqe;
+
+ /* Responder resources. It's a circular list where the oldest
+ * resource is dropped first.
+ */
+ struct resp_res *resources;
+ unsigned int res_head;
+ unsigned int res_tail;
+ struct resp_res *res;
+ struct rxe_task task;
+};
+
+struct rxe_qp {
+ struct rxe_pool_entry pelem;
+ struct ib_qp ibqp;
+ struct ib_qp_attr attr;
+ unsigned int valid;
+ unsigned int mtu;
+ int is_user;
+
+ struct rxe_pd *pd;
+ struct rxe_srq *srq;
+ struct rxe_cq *scq;
+ struct rxe_cq *rcq;
+
+ enum ib_sig_type sq_sig_type;
+
+ struct rxe_sq sq;
+ struct rxe_rq rq;
+
+ struct socket *sk;
+
+ struct rxe_av pri_av;
+ struct rxe_av alt_av;
+
+ /* list of mcast groups qp has joined (for cleanup) */
+ struct list_head grp_list;
+ spinlock_t grp_lock; /* guard grp_list */
+
+ struct sk_buff_head req_pkts;
+ struct sk_buff_head resp_pkts;
+ struct sk_buff_head send_pkts;
+
+ struct rxe_req_info req;
+ struct rxe_comp_info comp;
+ struct rxe_resp_info resp;
+
+ atomic_t ssn;
+ atomic_t skb_out;
+ int need_req_skb;
+
+ /* Timer for retranmitting packet when ACKs have been lost. RC
+ * only. The requester sets it when it is not already
+ * started. The responder resets it whenever an ack is
+ * received.
+ */
+ struct timer_list retrans_timer;
+ u64 qp_timeout_jiffies;
+
+ /* Timer for handling RNR NAKS. */
+ struct timer_list rnr_nak_timer;
+
+ spinlock_t state_lock; /* guard requester and completer */
+};
+
+enum rxe_mem_state {
+ RXE_MEM_STATE_ZOMBIE,
+ RXE_MEM_STATE_INVALID,
+ RXE_MEM_STATE_FREE,
+ RXE_MEM_STATE_VALID,
+};
+
+enum rxe_mem_type {
+ RXE_MEM_TYPE_NONE,
+ RXE_MEM_TYPE_DMA,
+ RXE_MEM_TYPE_MR,
+ RXE_MEM_TYPE_FMR,
+ RXE_MEM_TYPE_MW,
+};
+
+#define RXE_BUF_PER_MAP (PAGE_SIZE / sizeof(struct rxe_phys_buf))
+
+struct rxe_phys_buf {
+ u64 addr;
+ u64 size;
+};
+
+struct rxe_map {
+ struct rxe_phys_buf buf[RXE_BUF_PER_MAP];
+};
+
+struct rxe_mem {
+ struct rxe_pool_entry pelem;
+ union {
+ struct ib_mr ibmr;
+ struct ib_mw ibmw;
+ };
+
+ struct rxe_pd *pd;
+ struct ib_umem *umem;
+
+ u32 lkey;
+ u32 rkey;
+
+ enum rxe_mem_state state;
+ enum rxe_mem_type type;
+ u64 va;
+ u64 iova;
+ size_t length;
+ u32 offset;
+ int access;
+
+ int page_shift;
+ int page_mask;
+ int map_shift;
+ int map_mask;
+
+ u32 num_buf;
+ u32 nbuf;
+
+ u32 max_buf;
+ u32 num_map;
+
+ struct rxe_map **map;
+};
+
+struct rxe_mc_grp {
+ struct rxe_pool_entry pelem;
+ spinlock_t mcg_lock; /* guard group */
+ struct rxe_dev *rxe;
+ struct list_head qp_list;
+ union ib_gid mgid;
+ int num_qp;
+ u32 qkey;
+ u16 pkey;
+};
+
+struct rxe_mc_elem {
+ struct rxe_pool_entry pelem;
+ struct list_head qp_list;
+ struct list_head grp_list;
+ struct rxe_qp *qp;
+ struct rxe_mc_grp *grp;
+};
+
+struct rxe_port {
+ struct ib_port_attr attr;
+ u16 *pkey_tbl;
+ __be64 port_guid;
+ __be64 subnet_prefix;
+ spinlock_t port_lock; /* guard port */
+ unsigned int mtu_cap;
+ /* special QPs */
+ u32 qp_smi_index;
+ u32 qp_gsi_index;
+};
+
+/* callbacks from rdma_rxe to network interface layer */
+struct rxe_ifc_ops {
+ void (*release)(struct rxe_dev *rxe);
+ __be64 (*node_guid)(struct rxe_dev *rxe);
+ __be64 (*port_guid)(struct rxe_dev *rxe);
+ struct device *(*dma_device)(struct rxe_dev *rxe);
+ int (*mcast_add)(struct rxe_dev *rxe, union ib_gid *mgid);
+ int (*mcast_delete)(struct rxe_dev *rxe, union ib_gid *mgid);
+ int (*prepare)(struct rxe_dev *rxe, struct rxe_pkt_info *pkt,
+ struct sk_buff *skb, u32 *crc);
+ int (*send)(struct rxe_dev *rxe, struct rxe_pkt_info *pkt,
+ struct sk_buff *skb);
+ int (*loopback)(struct sk_buff *skb);
+ struct sk_buff *(*init_packet)(struct rxe_dev *rxe, struct rxe_av *av,
+ int paylen, struct rxe_pkt_info *pkt);
+ char *(*parent_name)(struct rxe_dev *rxe, unsigned int port_num);
+ enum rdma_link_layer (*link_layer)(struct rxe_dev *rxe,
+ unsigned int port_num);
+};
+
+struct rxe_dev {
+ struct ib_device ib_dev;
+ struct ib_device_attr attr;
+ int max_ucontext;
+ int max_inline_data;
+ struct kref ref_cnt;
+ struct mutex usdev_lock;
+
+ struct rxe_ifc_ops *ifc_ops;
+
+ struct net_device *ndev;
+
+ int xmit_errors;
+
+ struct rxe_pool uc_pool;
+ struct rxe_pool pd_pool;
+ struct rxe_pool ah_pool;
+ struct rxe_pool srq_pool;
+ struct rxe_pool qp_pool;
+ struct rxe_pool cq_pool;
+ struct rxe_pool mr_pool;
+ struct rxe_pool mw_pool;
+ struct rxe_pool mc_grp_pool;
+ struct rxe_pool mc_elem_pool;
+
+ spinlock_t pending_lock; /* guard pending_mmaps */
+ struct list_head pending_mmaps;
+
+ spinlock_t mmap_offset_lock; /* guard mmap_offset */
+ int mmap_offset;
+
+ struct rxe_port port;
+ struct list_head list;
+};
+
+static inline struct rxe_dev *to_rdev(struct ib_device *dev)
+{
+ return dev ? container_of(dev, struct rxe_dev, ib_dev) : NULL;
+}
+
+static inline struct rxe_ucontext *to_ruc(struct ib_ucontext *uc)
+{
+ return uc ? container_of(uc, struct rxe_ucontext, ibuc) : NULL;
+}
+
+static inline struct rxe_pd *to_rpd(struct ib_pd *pd)
+{
+ return pd ? container_of(pd, struct rxe_pd, ibpd) : NULL;
+}
+
+static inline struct rxe_ah *to_rah(struct ib_ah *ah)
+{
+ return ah ? container_of(ah, struct rxe_ah, ibah) : NULL;
+}
+
+static inline struct rxe_srq *to_rsrq(struct ib_srq *srq)
+{
+ return srq ? container_of(srq, struct rxe_srq, ibsrq) : NULL;
+}
+
+static inline struct rxe_qp *to_rqp(struct ib_qp *qp)
+{
+ return qp ? container_of(qp, struct rxe_qp, ibqp) : NULL;
+}
+
+static inline struct rxe_cq *to_rcq(struct ib_cq *cq)
+{
+ return cq ? container_of(cq, struct rxe_cq, ibcq) : NULL;
+}
+
+static inline struct rxe_mem *to_rmr(struct ib_mr *mr)
+{
+ return mr ? container_of(mr, struct rxe_mem, ibmr) : NULL;
+}
+
+static inline struct rxe_mem *to_rmw(struct ib_mw *mw)
+{
+ return mw ? container_of(mw, struct rxe_mem, ibmw) : NULL;
+}
+
+int rxe_register_device(struct rxe_dev *rxe);
+int rxe_unregister_device(struct rxe_dev *rxe);
+
+void rxe_mc_cleanup(void *arg);
+
+#endif /* RXE_VERBS_H */
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_ethtool.c b/drivers/infiniband/ulp/ipoib/ipoib_ethtool.c
index 1502199c8e56..7b6d40ff1acf 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_ethtool.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_ethtool.c
@@ -62,10 +62,8 @@ static void ipoib_get_drvinfo(struct net_device *netdev,
{
struct ipoib_dev_priv *priv = netdev_priv(netdev);
- snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
- "%d.%d.%d", (int)(priv->ca->attrs.fw_ver >> 32),
- (int)(priv->ca->attrs.fw_ver >> 16) & 0xffff,
- (int)priv->ca->attrs.fw_ver & 0xffff);
+ ib_get_device_fw_str(priv->ca, drvinfo->fw_version,
+ sizeof(drvinfo->fw_version));
strlcpy(drvinfo->bus_info, dev_name(priv->ca->dma_device),
sizeof(drvinfo->bus_info));
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c
index 5f58c41ef787..74bcaa064226 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_main.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c
@@ -1967,8 +1967,7 @@ int ipoib_set_dev_features(struct ipoib_dev_priv *priv, struct ib_device *hca)
priv->hca_caps = hca->attrs.device_cap_flags;
if (priv->hca_caps & IB_DEVICE_UD_IP_CSUM) {
- priv->dev->hw_features = NETIF_F_SG |
- NETIF_F_IP_CSUM | NETIF_F_RXCSUM;
+ priv->dev->hw_features = NETIF_F_IP_CSUM | NETIF_F_RXCSUM;
if (priv->hca_caps & IB_DEVICE_UD_TSO)
priv->dev->hw_features |= NETIF_F_TSO;
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_verbs.c b/drivers/infiniband/ulp/ipoib/ipoib_verbs.c
index 1e7cbbaa15bd..c55ecb2c3736 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_verbs.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_verbs.c
@@ -135,7 +135,8 @@ int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca)
.cap = {
.max_send_wr = ipoib_sendq_size,
.max_recv_wr = ipoib_recvq_size,
- .max_send_sge = 1,
+ .max_send_sge = min_t(u32, priv->ca->attrs.max_sge,
+ MAX_SKB_FRAGS + 1),
.max_recv_sge = IPOIB_UD_RX_SG
},
.sq_sig_type = IB_SIGNAL_ALL_WR,
@@ -205,10 +206,6 @@ int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca)
if (priv->hca_caps & IB_DEVICE_MANAGED_FLOW_STEERING)
init_attr.create_flags |= IB_QP_CREATE_NETIF_QP;
- if (dev->features & NETIF_F_SG)
- init_attr.cap.max_send_sge =
- min_t(u32, priv->ca->attrs.max_sge, MAX_SKB_FRAGS + 1);
-
priv->qp = ib_create_qp(priv->pd, &init_attr);
if (IS_ERR(priv->qp)) {
printk(KERN_WARNING "%s: failed to create QP\n", ca->name);
@@ -234,6 +231,9 @@ int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca)
priv->rx_wr.next = NULL;
priv->rx_wr.sg_list = priv->rx_sge;
+ if (init_attr.cap.max_send_sge > 1)
+ dev->features |= NETIF_F_SG;
+
priv->max_send_sge = init_attr.cap.max_send_sge;
return 0;
diff --git a/drivers/infiniband/ulp/isert/ib_isert.c b/drivers/infiniband/ulp/isert/ib_isert.c
index a990c04208c9..ba6be060a476 100644
--- a/drivers/infiniband/ulp/isert/ib_isert.c
+++ b/drivers/infiniband/ulp/isert/ib_isert.c
@@ -137,8 +137,6 @@ isert_create_qp(struct isert_conn *isert_conn,
attr.cap.max_recv_wr = ISERT_QP_MAX_RECV_DTOS + 1;
attr.cap.max_rdma_ctxs = ISCSI_DEF_XMIT_CMDS_MAX;
attr.cap.max_send_sge = device->ib_device->attrs.max_sge;
- isert_conn->max_sge = min(device->ib_device->attrs.max_sge,
- device->ib_device->attrs.max_sge_rd);
attr.cap.max_recv_sge = 1;
attr.sq_sig_type = IB_SIGNAL_REQ_WR;
attr.qp_type = IB_QPT_RC;
diff --git a/drivers/infiniband/ulp/isert/ib_isert.h b/drivers/infiniband/ulp/isert/ib_isert.h
index e512ba941f2f..fc791efe3a10 100644
--- a/drivers/infiniband/ulp/isert/ib_isert.h
+++ b/drivers/infiniband/ulp/isert/ib_isert.h
@@ -138,7 +138,6 @@ struct isert_conn {
u32 responder_resources;
u32 initiator_depth;
bool pi_support;
- u32 max_sge;
struct iser_rx_desc *login_req_buf;
char *login_rsp_buf;
u64 login_req_dma;
diff --git a/drivers/infiniband/ulp/srpt/ib_srpt.c b/drivers/infiniband/ulp/srpt/ib_srpt.c
index 4a4155640d51..dfa23b075a88 100644
--- a/drivers/infiniband/ulp/srpt/ib_srpt.c
+++ b/drivers/infiniband/ulp/srpt/ib_srpt.c
@@ -1601,6 +1601,7 @@ static int srpt_create_ch_ib(struct srpt_rdma_ch *ch)
struct ib_qp_init_attr *qp_init;
struct srpt_port *sport = ch->sport;
struct srpt_device *sdev = sport->sdev;
+ const struct ib_device_attr *attrs = &sdev->device->attrs;
u32 srp_sq_size = sport->port_attrib.srp_sq_size;
int ret;
@@ -1638,7 +1639,7 @@ retry:
*/
qp_init->cap.max_send_wr = srp_sq_size / 2;
qp_init->cap.max_rdma_ctxs = srp_sq_size / 2;
- qp_init->cap.max_send_sge = SRPT_DEF_SG_PER_WQE;
+ qp_init->cap.max_send_sge = min(attrs->max_sge, SRPT_MAX_SG_PER_WQE);
qp_init->port_num = ch->sport->port;
ch->qp = ib_create_qp(sdev->pd, qp_init);
@@ -2261,7 +2262,7 @@ static void srpt_queue_response(struct se_cmd *cmd)
container_of(cmd, struct srpt_send_ioctx, cmd);
struct srpt_rdma_ch *ch = ioctx->ch;
struct srpt_device *sdev = ch->sport->sdev;
- struct ib_send_wr send_wr, *first_wr = NULL, *bad_wr;
+ struct ib_send_wr send_wr, *first_wr = &send_wr, *bad_wr;
struct ib_sge sge;
enum srpt_command_state state;
unsigned long flags;
@@ -2302,11 +2303,8 @@ static void srpt_queue_response(struct se_cmd *cmd)
struct srpt_rw_ctx *ctx = &ioctx->rw_ctxs[i];
first_wr = rdma_rw_ctx_wrs(&ctx->rw, ch->qp,
- ch->sport->port, NULL,
- first_wr ? first_wr : &send_wr);
+ ch->sport->port, NULL, first_wr);
}
- } else {
- first_wr = &send_wr;
}
if (state != SRPT_STATE_MGMT)
diff --git a/drivers/infiniband/ulp/srpt/ib_srpt.h b/drivers/infiniband/ulp/srpt/ib_srpt.h
index 389030487da7..581878782854 100644
--- a/drivers/infiniband/ulp/srpt/ib_srpt.h
+++ b/drivers/infiniband/ulp/srpt/ib_srpt.h
@@ -106,7 +106,11 @@ enum {
SRP_LOGIN_RSP_MULTICHAN_MAINTAINED = 0x2,
SRPT_DEF_SG_TABLESIZE = 128,
- SRPT_DEF_SG_PER_WQE = 16,
+ /*
+ * An experimentally determined value that avoids that QP creation
+ * fails due to "swiotlb buffer is full" on systems using the swiotlb.
+ */
+ SRPT_MAX_SG_PER_WQE = 16,
MIN_SRPT_SQ_SIZE = 16,
DEF_SRPT_SQ_SIZE = 4096,
diff --git a/drivers/input/joystick/xpad.c b/drivers/input/joystick/xpad.c
index a529a4535457..83af17ad0f1f 100644
--- a/drivers/input/joystick/xpad.c
+++ b/drivers/input/joystick/xpad.c
@@ -115,6 +115,10 @@ static bool sticks_to_null;
module_param(sticks_to_null, bool, S_IRUGO);
MODULE_PARM_DESC(sticks_to_null, "Do not map sticks at all for unknown pads");
+static bool auto_poweroff = true;
+module_param(auto_poweroff, bool, S_IWUSR | S_IRUGO);
+MODULE_PARM_DESC(auto_poweroff, "Power off wireless controllers on suspend");
+
static const struct xpad_device {
u16 idVendor;
u16 idProduct;
@@ -1248,6 +1252,36 @@ static void xpad_stop_input(struct usb_xpad *xpad)
usb_kill_urb(xpad->irq_in);
}
+static void xpad360w_poweroff_controller(struct usb_xpad *xpad)
+{
+ unsigned long flags;
+ struct xpad_output_packet *packet =
+ &xpad->out_packets[XPAD_OUT_CMD_IDX];
+
+ spin_lock_irqsave(&xpad->odata_lock, flags);
+
+ packet->data[0] = 0x00;
+ packet->data[1] = 0x00;
+ packet->data[2] = 0x08;
+ packet->data[3] = 0xC0;
+ packet->data[4] = 0x00;
+ packet->data[5] = 0x00;
+ packet->data[6] = 0x00;
+ packet->data[7] = 0x00;
+ packet->data[8] = 0x00;
+ packet->data[9] = 0x00;
+ packet->data[10] = 0x00;
+ packet->data[11] = 0x00;
+ packet->len = 12;
+ packet->pending = true;
+
+ /* Reset the sequence so we send out poweroff now */
+ xpad->last_out_packet = -1;
+ xpad_try_sending_next_out_packet(xpad);
+
+ spin_unlock_irqrestore(&xpad->odata_lock, flags);
+}
+
static int xpad360w_start_input(struct usb_xpad *xpad)
{
int error;
@@ -1590,6 +1624,15 @@ static int xpad_suspend(struct usb_interface *intf, pm_message_t message)
* or goes away.
*/
xpad360w_stop_input(xpad);
+
+ /*
+ * The wireless adapter is going off now, so the
+ * gamepads are going to become disconnected.
+ * Unless explicitly disabled, power them down
+ * so they don't just sit there flashing.
+ */
+ if (auto_poweroff && xpad->pad_present)
+ xpad360w_poweroff_controller(xpad);
} else {
mutex_lock(&input->mutex);
if (input->users)
diff --git a/drivers/input/keyboard/cros_ec_keyb.c b/drivers/input/keyboard/cros_ec_keyb.c
index b01966dc7eb3..4b0878f35471 100644
--- a/drivers/input/keyboard/cros_ec_keyb.c
+++ b/drivers/input/keyboard/cros_ec_keyb.c
@@ -186,7 +186,7 @@ static irqreturn_t cros_ec_keyb_irq(int irq, void *data)
if (ret >= 0)
cros_ec_keyb_process(ckdev, kb_state, ret);
else
- dev_err(ec->dev, "failed to get keyboard state: %d\n", ret);
+ dev_err(ckdev->dev, "failed to get keyboard state: %d\n", ret);
return IRQ_HANDLED;
}
@@ -236,7 +236,7 @@ static void cros_ec_keyb_compute_valid_keys(struct cros_ec_keyb *ckdev)
static int cros_ec_keyb_probe(struct platform_device *pdev)
{
struct cros_ec_device *ec = dev_get_drvdata(pdev->dev.parent);
- struct device *dev = ec->dev;
+ struct device *dev = &pdev->dev;
struct cros_ec_keyb *ckdev;
struct input_dev *idev;
struct device_node *np;
@@ -246,23 +246,22 @@ static int cros_ec_keyb_probe(struct platform_device *pdev)
if (!np)
return -ENODEV;
- ckdev = devm_kzalloc(&pdev->dev, sizeof(*ckdev), GFP_KERNEL);
+ ckdev = devm_kzalloc(dev, sizeof(*ckdev), GFP_KERNEL);
if (!ckdev)
return -ENOMEM;
- err = matrix_keypad_parse_of_params(&pdev->dev, &ckdev->rows,
- &ckdev->cols);
+ err = matrix_keypad_parse_of_params(dev, &ckdev->rows, &ckdev->cols);
if (err)
return err;
- ckdev->valid_keys = devm_kzalloc(&pdev->dev, ckdev->cols, GFP_KERNEL);
+ ckdev->valid_keys = devm_kzalloc(dev, ckdev->cols, GFP_KERNEL);
if (!ckdev->valid_keys)
return -ENOMEM;
- ckdev->old_kb_state = devm_kzalloc(&pdev->dev, ckdev->cols, GFP_KERNEL);
+ ckdev->old_kb_state = devm_kzalloc(dev, ckdev->cols, GFP_KERNEL);
if (!ckdev->old_kb_state)
return -ENOMEM;
- idev = devm_input_allocate_device(&pdev->dev);
+ idev = devm_input_allocate_device(dev);
if (!idev)
return -ENOMEM;
@@ -273,7 +272,7 @@ static int cros_ec_keyb_probe(struct platform_device *pdev)
ckdev->ec = ec;
ckdev->dev = dev;
- dev_set_drvdata(&pdev->dev, ckdev);
+ dev_set_drvdata(dev, ckdev);
idev->name = CROS_EC_DEV_NAME;
idev->phys = ec->phys_name;
@@ -282,7 +281,7 @@ static int cros_ec_keyb_probe(struct platform_device *pdev)
idev->id.bustype = BUS_VIRTUAL;
idev->id.version = 1;
idev->id.product = 0;
- idev->dev.parent = &pdev->dev;
+ idev->dev.parent = dev;
idev->open = cros_ec_keyb_open;
idev->close = cros_ec_keyb_close;
diff --git a/drivers/input/misc/rotary_encoder.c b/drivers/input/misc/rotary_encoder.c
index c7fc8d4fb080..1588aecafff7 100644
--- a/drivers/input/misc/rotary_encoder.c
+++ b/drivers/input/misc/rotary_encoder.c
@@ -28,6 +28,11 @@
#define DRV_NAME "rotary-encoder"
+enum rotary_encoder_encoding {
+ ROTENC_GRAY,
+ ROTENC_BINARY,
+};
+
struct rotary_encoder {
struct input_dev *input;
@@ -37,6 +42,7 @@ struct rotary_encoder {
u32 axis;
bool relative_axis;
bool rollover;
+ enum rotary_encoder_encoding encoding;
unsigned int pos;
@@ -57,8 +63,9 @@ static unsigned int rotary_encoder_get_state(struct rotary_encoder *encoder)
for (i = 0; i < encoder->gpios->ndescs; ++i) {
int val = gpiod_get_value_cansleep(encoder->gpios->desc[i]);
+
/* convert from gray encoding to normal */
- if (ret & 1)
+ if (encoder->encoding == ROTENC_GRAY && ret & 1)
val = !val;
ret = ret << 1 | val;
@@ -213,6 +220,20 @@ static int rotary_encoder_probe(struct platform_device *pdev)
encoder->rollover =
device_property_read_bool(dev, "rotary-encoder,rollover");
+ if (!device_property_present(dev, "rotary-encoder,encoding") ||
+ !device_property_match_string(dev, "rotary-encoder,encoding",
+ "gray")) {
+ dev_info(dev, "gray");
+ encoder->encoding = ROTENC_GRAY;
+ } else if (!device_property_match_string(dev, "rotary-encoder,encoding",
+ "binary")) {
+ dev_info(dev, "binary");
+ encoder->encoding = ROTENC_BINARY;
+ } else {
+ dev_err(dev, "unknown encoding setting\n");
+ return -EINVAL;
+ }
+
device_property_read_u32(dev, "linux,axis", &encoder->axis);
encoder->relative_axis =
device_property_read_bool(dev, "rotary-encoder,relative-axis");
diff --git a/drivers/input/mouse/elan_i2c_core.c b/drivers/input/mouse/elan_i2c_core.c
index 2f589857a039..d15b33813021 100644
--- a/drivers/input/mouse/elan_i2c_core.c
+++ b/drivers/input/mouse/elan_i2c_core.c
@@ -4,7 +4,8 @@
* Copyright (c) 2013 ELAN Microelectronics Corp.
*
* Author: 林政維 (Duson Lin) <dusonlin@emc.com.tw>
- * Version: 1.6.0
+ * Author: KT Liao <kt.liao@emc.com.tw>
+ * Version: 1.6.2
*
* Based on cyapa driver:
* copyright (c) 2011-2012 Cypress Semiconductor, Inc.
@@ -40,7 +41,7 @@
#include "elan_i2c.h"
#define DRIVER_NAME "elan_i2c"
-#define ELAN_DRIVER_VERSION "1.6.1"
+#define ELAN_DRIVER_VERSION "1.6.2"
#define ELAN_VENDOR_ID 0x04f3
#define ETP_MAX_PRESSURE 255
#define ETP_FWIDTH_REDUCE 90
@@ -199,9 +200,41 @@ static int elan_sleep(struct elan_tp_data *data)
return error;
}
+static int elan_query_product(struct elan_tp_data *data)
+{
+ int error;
+
+ error = data->ops->get_product_id(data->client, &data->product_id);
+ if (error)
+ return error;
+
+ error = data->ops->get_sm_version(data->client, &data->ic_type,
+ &data->sm_version);
+ if (error)
+ return error;
+
+ return 0;
+}
+
+static int elan_check_ASUS_special_fw(struct elan_tp_data *data)
+{
+ if (data->ic_type != 0x0E)
+ return false;
+
+ switch (data->product_id) {
+ case 0x05 ... 0x07:
+ case 0x09:
+ case 0x13:
+ return true;
+ default:
+ return false;
+ }
+}
+
static int __elan_initialize(struct elan_tp_data *data)
{
struct i2c_client *client = data->client;
+ bool woken_up = false;
int error;
error = data->ops->initialize(client);
@@ -210,6 +243,27 @@ static int __elan_initialize(struct elan_tp_data *data)
return error;
}
+ error = elan_query_product(data);
+ if (error)
+ return error;
+
+ /*
+ * Some ASUS devices were shipped with firmware that requires
+ * touchpads to be woken up first, before attempting to switch
+ * them into absolute reporting mode.
+ */
+ if (elan_check_ASUS_special_fw(data)) {
+ error = data->ops->sleep_control(client, false);
+ if (error) {
+ dev_err(&client->dev,
+ "failed to wake device up: %d\n", error);
+ return error;
+ }
+
+ msleep(200);
+ woken_up = true;
+ }
+
data->mode |= ETP_ENABLE_ABS;
error = data->ops->set_mode(client, data->mode);
if (error) {
@@ -218,11 +272,13 @@ static int __elan_initialize(struct elan_tp_data *data)
return error;
}
- error = data->ops->sleep_control(client, false);
- if (error) {
- dev_err(&client->dev,
- "failed to wake device up: %d\n", error);
- return error;
+ if (!woken_up) {
+ error = data->ops->sleep_control(client, false);
+ if (error) {
+ dev_err(&client->dev,
+ "failed to wake device up: %d\n", error);
+ return error;
+ }
}
return 0;
@@ -248,10 +304,6 @@ static int elan_query_device_info(struct elan_tp_data *data)
{
int error;
- error = data->ops->get_product_id(data->client, &data->product_id);
- if (error)
- return error;
-
error = data->ops->get_version(data->client, false, &data->fw_version);
if (error)
return error;
@@ -261,11 +313,6 @@ static int elan_query_device_info(struct elan_tp_data *data)
if (error)
return error;
- error = data->ops->get_sm_version(data->client, &data->ic_type,
- &data->sm_version);
- if (error)
- return error;
-
error = data->ops->get_version(data->client, true, &data->iap_version);
if (error)
return error;
diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c
index 615d23ec0d8e..08e252a42480 100644
--- a/drivers/input/mouse/elantech.c
+++ b/drivers/input/mouse/elantech.c
@@ -222,12 +222,8 @@ static int elantech_write_reg(struct psmouse *psmouse, unsigned char reg,
*/
static void elantech_packet_dump(struct psmouse *psmouse)
{
- int i;
-
- psmouse_printk(KERN_DEBUG, psmouse, "PS/2 packet [");
- for (i = 0; i < psmouse->pktsize; i++)
- printk("%s0x%02x ", i ? ", " : " ", psmouse->packet[i]);
- printk("]\n");
+ psmouse_printk(KERN_DEBUG, psmouse, "PS/2 packet [%*ph]\n",
+ psmouse->pktsize, psmouse->packet);
}
/*
diff --git a/drivers/input/rmi4/rmi_bus.c b/drivers/input/rmi4/rmi_bus.c
index 253df96be427..a73580654c6b 100644
--- a/drivers/input/rmi4/rmi_bus.c
+++ b/drivers/input/rmi4/rmi_bus.c
@@ -232,10 +232,7 @@ err_put_device:
void rmi_unregister_function(struct rmi_function *fn)
{
device_del(&fn->dev);
-
- if (fn->dev.of_node)
- of_node_put(fn->dev.of_node);
-
+ of_node_put(fn->dev.of_node);
put_device(&fn->dev);
}
diff --git a/drivers/input/serio/i8042.c b/drivers/input/serio/i8042.c
index 454195709a82..b4d34086e73f 100644
--- a/drivers/input/serio/i8042.c
+++ b/drivers/input/serio/i8042.c
@@ -1277,6 +1277,7 @@ static int __init i8042_create_kbd_port(void)
serio->start = i8042_start;
serio->stop = i8042_stop;
serio->close = i8042_port_close;
+ serio->ps2_cmd_mutex = &i8042_mutex;
serio->port_data = port;
serio->dev.parent = &i8042_platform_device->dev;
strlcpy(serio->name, "i8042 KBD port", sizeof(serio->name));
@@ -1373,21 +1374,6 @@ static void i8042_unregister_ports(void)
}
}
-/*
- * Checks whether port belongs to i8042 controller.
- */
-bool i8042_check_port_owner(const struct serio *port)
-{
- int i;
-
- for (i = 0; i < I8042_NUM_PORTS; i++)
- if (i8042_ports[i].serio == port)
- return true;
-
- return false;
-}
-EXPORT_SYMBOL(i8042_check_port_owner);
-
static void i8042_free_irqs(void)
{
if (i8042_aux_irq_registered)
diff --git a/drivers/input/serio/libps2.c b/drivers/input/serio/libps2.c
index 316f2c897101..83e9c663aa67 100644
--- a/drivers/input/serio/libps2.c
+++ b/drivers/input/serio/libps2.c
@@ -56,19 +56,17 @@ EXPORT_SYMBOL(ps2_sendbyte);
void ps2_begin_command(struct ps2dev *ps2dev)
{
- mutex_lock(&ps2dev->cmd_mutex);
+ struct mutex *m = ps2dev->serio->ps2_cmd_mutex ?: &ps2dev->cmd_mutex;
- if (i8042_check_port_owner(ps2dev->serio))
- i8042_lock_chip();
+ mutex_lock(m);
}
EXPORT_SYMBOL(ps2_begin_command);
void ps2_end_command(struct ps2dev *ps2dev)
{
- if (i8042_check_port_owner(ps2dev->serio))
- i8042_unlock_chip();
+ struct mutex *m = ps2dev->serio->ps2_cmd_mutex ?: &ps2dev->cmd_mutex;
- mutex_unlock(&ps2dev->cmd_mutex);
+ mutex_unlock(m);
}
EXPORT_SYMBOL(ps2_end_command);
diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index ee02dc7422bd..2fb1f430a431 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -1059,6 +1059,31 @@ config TOUCHSCREEN_RM_TS
To compile this driver as a module, choose M here: the
module will be called raydium_i2c_ts.
+config TOUCHSCREEN_SILEAD
+ tristate "Silead I2C touchscreen"
+ depends on I2C
+ help
+ Say Y here if you have the Silead touchscreen connected to
+ your system.
+
+ If unsure, say N.
+
+ To compile this driver as a module, choose M here: the
+ module will be called silead.
+
+config TOUCHSCREEN_SIS_I2C
+ tristate "SiS 9200 family I2C touchscreen"
+ depends on I2C
+ select CRC_ITU_T
+ depends on GPIOLIB || COMPILE_TEST
+ help
+ This enables support for SiS 9200 family over I2C based touchscreens.
+
+ If unsure, say N.
+
+ To compile this driver as a module, choose M here: the
+ module will be called sis_i2c.
+
config TOUCHSCREEN_ST1232
tristate "Sitronix ST1232 touchscreen controllers"
depends on I2C
diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile
index 3315882905f7..b4373d6be402 100644
--- a/drivers/input/touchscreen/Makefile
+++ b/drivers/input/touchscreen/Makefile
@@ -64,6 +64,8 @@ obj-$(CONFIG_TOUCHSCREEN_PENMOUNT) += penmount.o
obj-$(CONFIG_TOUCHSCREEN_PIXCIR) += pixcir_i2c_ts.o
obj-$(CONFIG_TOUCHSCREEN_RM_TS) += raydium_i2c_ts.o
obj-$(CONFIG_TOUCHSCREEN_S3C2410) += s3c2410_ts.o
+obj-$(CONFIG_TOUCHSCREEN_SILEAD) += silead.o
+obj-$(CONFIG_TOUCHSCREEN_SIS_I2C) += sis_i2c.o
obj-$(CONFIG_TOUCHSCREEN_ST1232) += st1232.o
obj-$(CONFIG_TOUCHSCREEN_STMPE) += stmpe-ts.o
obj-$(CONFIG_TOUCHSCREEN_SUN4I) += sun4i-ts.o
diff --git a/drivers/input/touchscreen/ili210x.c b/drivers/input/touchscreen/ili210x.c
index ddf694b9fffc..fe4848bd1f4c 100644
--- a/drivers/input/touchscreen/ili210x.c
+++ b/drivers/input/touchscreen/ili210x.c
@@ -169,7 +169,7 @@ static ssize_t ili210x_calibrate(struct device *dev,
return count;
}
-static DEVICE_ATTR(calibrate, 0644, NULL, ili210x_calibrate);
+static DEVICE_ATTR(calibrate, S_IWUSR, NULL, ili210x_calibrate);
static struct attribute *ili210x_attributes[] = {
&dev_attr_calibrate.attr,
diff --git a/drivers/input/touchscreen/silead.c b/drivers/input/touchscreen/silead.c
new file mode 100644
index 000000000000..7379fe153cf9
--- /dev/null
+++ b/drivers/input/touchscreen/silead.c
@@ -0,0 +1,565 @@
+/* -------------------------------------------------------------------------
+ * Copyright (C) 2014-2015, Intel Corporation
+ *
+ * Derived from:
+ * gslX68X.c
+ * Copyright (C) 2010-2015, Shanghai Sileadinc Co.Ltd
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ * -------------------------------------------------------------------------
+ */
+
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/acpi.h>
+#include <linux/interrupt.h>
+#include <linux/gpio/consumer.h>
+#include <linux/delay.h>
+#include <linux/firmware.h>
+#include <linux/input.h>
+#include <linux/input/mt.h>
+#include <linux/input/touchscreen.h>
+#include <linux/pm.h>
+#include <linux/irq.h>
+
+#include <asm/unaligned.h>
+
+#define SILEAD_TS_NAME "silead_ts"
+
+#define SILEAD_REG_RESET 0xE0
+#define SILEAD_REG_DATA 0x80
+#define SILEAD_REG_TOUCH_NR 0x80
+#define SILEAD_REG_POWER 0xBC
+#define SILEAD_REG_CLOCK 0xE4
+#define SILEAD_REG_STATUS 0xB0
+#define SILEAD_REG_ID 0xFC
+#define SILEAD_REG_MEM_CHECK 0xB0
+
+#define SILEAD_STATUS_OK 0x5A5A5A5A
+#define SILEAD_TS_DATA_LEN 44
+#define SILEAD_CLOCK 0x04
+
+#define SILEAD_CMD_RESET 0x88
+#define SILEAD_CMD_START 0x00
+
+#define SILEAD_POINT_DATA_LEN 0x04
+#define SILEAD_POINT_Y_OFF 0x00
+#define SILEAD_POINT_Y_MSB_OFF 0x01
+#define SILEAD_POINT_X_OFF 0x02
+#define SILEAD_POINT_X_MSB_OFF 0x03
+#define SILEAD_TOUCH_ID_MASK 0xF0
+
+#define SILEAD_CMD_SLEEP_MIN 10000
+#define SILEAD_CMD_SLEEP_MAX 20000
+#define SILEAD_POWER_SLEEP 20
+#define SILEAD_STARTUP_SLEEP 30
+
+#define SILEAD_MAX_FINGERS 10
+
+enum silead_ts_power {
+ SILEAD_POWER_ON = 1,
+ SILEAD_POWER_OFF = 0
+};
+
+struct silead_ts_data {
+ struct i2c_client *client;
+ struct gpio_desc *gpio_power;
+ struct input_dev *input;
+ char fw_name[64];
+ struct touchscreen_properties prop;
+ u32 max_fingers;
+ u32 chip_id;
+ struct input_mt_pos pos[SILEAD_MAX_FINGERS];
+ int slots[SILEAD_MAX_FINGERS];
+ int id[SILEAD_MAX_FINGERS];
+};
+
+struct silead_fw_data {
+ u32 offset;
+ u32 val;
+};
+
+static int silead_ts_request_input_dev(struct silead_ts_data *data)
+{
+ struct device *dev = &data->client->dev;
+ int error;
+
+ data->input = devm_input_allocate_device(dev);
+ if (!data->input) {
+ dev_err(dev,
+ "Failed to allocate input device\n");
+ return -ENOMEM;
+ }
+
+ input_set_abs_params(data->input, ABS_MT_POSITION_X, 0, 4095, 0, 0);
+ input_set_abs_params(data->input, ABS_MT_POSITION_Y, 0, 4095, 0, 0);
+ touchscreen_parse_properties(data->input, true, &data->prop);
+
+ input_mt_init_slots(data->input, data->max_fingers,
+ INPUT_MT_DIRECT | INPUT_MT_DROP_UNUSED |
+ INPUT_MT_TRACK);
+
+ data->input->name = SILEAD_TS_NAME;
+ data->input->phys = "input/ts";
+ data->input->id.bustype = BUS_I2C;
+
+ error = input_register_device(data->input);
+ if (error) {
+ dev_err(dev, "Failed to register input device: %d\n", error);
+ return error;
+ }
+
+ return 0;
+}
+
+static void silead_ts_set_power(struct i2c_client *client,
+ enum silead_ts_power state)
+{
+ struct silead_ts_data *data = i2c_get_clientdata(client);
+
+ if (data->gpio_power) {
+ gpiod_set_value_cansleep(data->gpio_power, state);
+ msleep(SILEAD_POWER_SLEEP);
+ }
+}
+
+static void silead_ts_read_data(struct i2c_client *client)
+{
+ struct silead_ts_data *data = i2c_get_clientdata(client);
+ struct input_dev *input = data->input;
+ struct device *dev = &client->dev;
+ u8 *bufp, buf[SILEAD_TS_DATA_LEN];
+ int touch_nr, error, i;
+
+ error = i2c_smbus_read_i2c_block_data(client, SILEAD_REG_DATA,
+ SILEAD_TS_DATA_LEN, buf);
+ if (error < 0) {
+ dev_err(dev, "Data read error %d\n", error);
+ return;
+ }
+
+ touch_nr = buf[0];
+ if (touch_nr > data->max_fingers) {
+ dev_warn(dev, "More touches reported then supported %d > %d\n",
+ touch_nr, data->max_fingers);
+ touch_nr = data->max_fingers;
+ }
+
+ bufp = buf + SILEAD_POINT_DATA_LEN;
+ for (i = 0; i < touch_nr; i++, bufp += SILEAD_POINT_DATA_LEN) {
+ /* Bits 4-7 are the touch id */
+ data->id[i] = (bufp[SILEAD_POINT_X_MSB_OFF] &
+ SILEAD_TOUCH_ID_MASK) >> 4;
+ touchscreen_set_mt_pos(&data->pos[i], &data->prop,
+ get_unaligned_le16(&bufp[SILEAD_POINT_X_OFF]) & 0xfff,
+ get_unaligned_le16(&bufp[SILEAD_POINT_Y_OFF]) & 0xfff);
+ }
+
+ input_mt_assign_slots(input, data->slots, data->pos, touch_nr, 0);
+
+ for (i = 0; i < touch_nr; i++) {
+ input_mt_slot(input, data->slots[i]);
+ input_mt_report_slot_state(input, MT_TOOL_FINGER, true);
+ input_report_abs(input, ABS_MT_POSITION_X, data->pos[i].x);
+ input_report_abs(input, ABS_MT_POSITION_Y, data->pos[i].y);
+
+ dev_dbg(dev, "x=%d y=%d hw_id=%d sw_id=%d\n", data->pos[i].x,
+ data->pos[i].y, data->id[i], data->slots[i]);
+ }
+
+ input_mt_sync_frame(input);
+ input_sync(input);
+}
+
+static int silead_ts_init(struct i2c_client *client)
+{
+ struct silead_ts_data *data = i2c_get_clientdata(client);
+ int error;
+
+ error = i2c_smbus_write_byte_data(client, SILEAD_REG_RESET,
+ SILEAD_CMD_RESET);
+ if (error)
+ goto i2c_write_err;
+ usleep_range(SILEAD_CMD_SLEEP_MIN, SILEAD_CMD_SLEEP_MAX);
+
+ error = i2c_smbus_write_byte_data(client, SILEAD_REG_TOUCH_NR,
+ data->max_fingers);
+ if (error)
+ goto i2c_write_err;
+ usleep_range(SILEAD_CMD_SLEEP_MIN, SILEAD_CMD_SLEEP_MAX);
+
+ error = i2c_smbus_write_byte_data(client, SILEAD_REG_CLOCK,
+ SILEAD_CLOCK);
+ if (error)
+ goto i2c_write_err;
+ usleep_range(SILEAD_CMD_SLEEP_MIN, SILEAD_CMD_SLEEP_MAX);
+
+ error = i2c_smbus_write_byte_data(client, SILEAD_REG_RESET,
+ SILEAD_CMD_START);
+ if (error)
+ goto i2c_write_err;
+ usleep_range(SILEAD_CMD_SLEEP_MIN, SILEAD_CMD_SLEEP_MAX);
+
+ return 0;
+
+i2c_write_err:
+ dev_err(&client->dev, "Registers clear error %d\n", error);
+ return error;
+}
+
+static int silead_ts_reset(struct i2c_client *client)
+{
+ int error;
+
+ error = i2c_smbus_write_byte_data(client, SILEAD_REG_RESET,
+ SILEAD_CMD_RESET);
+ if (error)
+ goto i2c_write_err;
+ usleep_range(SILEAD_CMD_SLEEP_MIN, SILEAD_CMD_SLEEP_MAX);
+
+ error = i2c_smbus_write_byte_data(client, SILEAD_REG_CLOCK,
+ SILEAD_CLOCK);
+ if (error)
+ goto i2c_write_err;
+ usleep_range(SILEAD_CMD_SLEEP_MIN, SILEAD_CMD_SLEEP_MAX);
+
+ error = i2c_smbus_write_byte_data(client, SILEAD_REG_POWER,
+ SILEAD_CMD_START);
+ if (error)
+ goto i2c_write_err;
+ usleep_range(SILEAD_CMD_SLEEP_MIN, SILEAD_CMD_SLEEP_MAX);
+
+ return 0;
+
+i2c_write_err:
+ dev_err(&client->dev, "Chip reset error %d\n", error);
+ return error;
+}
+
+static int silead_ts_startup(struct i2c_client *client)
+{
+ int error;
+
+ error = i2c_smbus_write_byte_data(client, SILEAD_REG_RESET, 0x00);
+ if (error) {
+ dev_err(&client->dev, "Startup error %d\n", error);
+ return error;
+ }
+
+ msleep(SILEAD_STARTUP_SLEEP);
+
+ return 0;
+}
+
+static int silead_ts_load_fw(struct i2c_client *client)
+{
+ struct device *dev = &client->dev;
+ struct silead_ts_data *data = i2c_get_clientdata(client);
+ unsigned int fw_size, i;
+ const struct firmware *fw;
+ struct silead_fw_data *fw_data;
+ int error;
+
+ dev_dbg(dev, "Firmware file name: %s", data->fw_name);
+
+ error = request_firmware(&fw, data->fw_name, dev);
+ if (error) {
+ dev_err(dev, "Firmware request error %d\n", error);
+ return error;
+ }
+
+ fw_size = fw->size / sizeof(*fw_data);
+ fw_data = (struct silead_fw_data *)fw->data;
+
+ for (i = 0; i < fw_size; i++) {
+ error = i2c_smbus_write_i2c_block_data(client,
+ fw_data[i].offset,
+ 4,
+ (u8 *)&fw_data[i].val);
+ if (error) {
+ dev_err(dev, "Firmware load error %d\n", error);
+ break;
+ }
+ }
+
+ release_firmware(fw);
+ return error ?: 0;
+}
+
+static u32 silead_ts_get_status(struct i2c_client *client)
+{
+ int error;
+ __le32 status;
+
+ error = i2c_smbus_read_i2c_block_data(client, SILEAD_REG_STATUS,
+ sizeof(status), (u8 *)&status);
+ if (error < 0) {
+ dev_err(&client->dev, "Status read error %d\n", error);
+ return error;
+ }
+
+ return le32_to_cpu(status);
+}
+
+static int silead_ts_get_id(struct i2c_client *client)
+{
+ struct silead_ts_data *data = i2c_get_clientdata(client);
+ __le32 chip_id;
+ int error;
+
+ error = i2c_smbus_read_i2c_block_data(client, SILEAD_REG_ID,
+ sizeof(chip_id), (u8 *)&chip_id);
+ if (error < 0) {
+ dev_err(&client->dev, "Chip ID read error %d\n", error);
+ return error;
+ }
+
+ data->chip_id = le32_to_cpu(chip_id);
+ dev_info(&client->dev, "Silead chip ID: 0x%8X", data->chip_id);
+
+ return 0;
+}
+
+static int silead_ts_setup(struct i2c_client *client)
+{
+ int error;
+ u32 status;
+
+ silead_ts_set_power(client, SILEAD_POWER_OFF);
+ silead_ts_set_power(client, SILEAD_POWER_ON);
+
+ error = silead_ts_get_id(client);
+ if (error)
+ return error;
+
+ error = silead_ts_init(client);
+ if (error)
+ return error;
+
+ error = silead_ts_reset(client);
+ if (error)
+ return error;
+
+ error = silead_ts_load_fw(client);
+ if (error)
+ return error;
+
+ error = silead_ts_startup(client);
+ if (error)
+ return error;
+
+ status = silead_ts_get_status(client);
+ if (status != SILEAD_STATUS_OK) {
+ dev_err(&client->dev,
+ "Initialization error, status: 0x%X\n", status);
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+static irqreturn_t silead_ts_threaded_irq_handler(int irq, void *id)
+{
+ struct silead_ts_data *data = id;
+ struct i2c_client *client = data->client;
+
+ silead_ts_read_data(client);
+
+ return IRQ_HANDLED;
+}
+
+static void silead_ts_read_props(struct i2c_client *client)
+{
+ struct silead_ts_data *data = i2c_get_clientdata(client);
+ struct device *dev = &client->dev;
+ const char *str;
+ int error;
+
+ error = device_property_read_u32(dev, "silead,max-fingers",
+ &data->max_fingers);
+ if (error) {
+ dev_dbg(dev, "Max fingers read error %d\n", error);
+ data->max_fingers = 5; /* Most devices handle up-to 5 fingers */
+ }
+
+ error = device_property_read_string(dev, "touchscreen-fw-name", &str);
+ if (!error)
+ snprintf(data->fw_name, sizeof(data->fw_name), "%s", str);
+ else
+ dev_dbg(dev, "Firmware file name read error. Using default.");
+}
+
+#ifdef CONFIG_ACPI
+static int silead_ts_set_default_fw_name(struct silead_ts_data *data,
+ const struct i2c_device_id *id)
+{
+ const struct acpi_device_id *acpi_id;
+ struct device *dev = &data->client->dev;
+ int i;
+
+ if (ACPI_HANDLE(dev)) {
+ acpi_id = acpi_match_device(dev->driver->acpi_match_table, dev);
+ if (!acpi_id)
+ return -ENODEV;
+
+ snprintf(data->fw_name, sizeof(data->fw_name), "%s.fw",
+ acpi_id->id);
+
+ for (i = 0; i < strlen(data->fw_name); i++)
+ data->fw_name[i] = tolower(data->fw_name[i]);
+ } else {
+ snprintf(data->fw_name, sizeof(data->fw_name), "%s.fw",
+ id->name);
+ }
+
+ return 0;
+}
+#else
+static int silead_ts_set_default_fw_name(struct silead_ts_data *data,
+ const struct i2c_device_id *id)
+{
+ snprintf(data->fw_name, sizeof(data->fw_name), "%s.fw", id->name);
+ return 0;
+}
+#endif
+
+static int silead_ts_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct silead_ts_data *data;
+ struct device *dev = &client->dev;
+ int error;
+
+ if (!i2c_check_functionality(client->adapter,
+ I2C_FUNC_I2C |
+ I2C_FUNC_SMBUS_READ_I2C_BLOCK |
+ I2C_FUNC_SMBUS_WRITE_I2C_BLOCK)) {
+ dev_err(dev, "I2C functionality check failed\n");
+ return -ENXIO;
+ }
+
+ data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ i2c_set_clientdata(client, data);
+ data->client = client;
+
+ error = silead_ts_set_default_fw_name(data, id);
+ if (error)
+ return error;
+
+ silead_ts_read_props(client);
+
+ /* We must have the IRQ provided by DT or ACPI subsytem */
+ if (client->irq <= 0)
+ return -ENODEV;
+
+ /* Power GPIO pin */
+ data->gpio_power = gpiod_get_optional(dev, "power", GPIOD_OUT_LOW);
+ if (IS_ERR(data->gpio_power)) {
+ if (PTR_ERR(data->gpio_power) != -EPROBE_DEFER)
+ dev_err(dev, "Shutdown GPIO request failed\n");
+ return PTR_ERR(data->gpio_power);
+ }
+
+ error = silead_ts_setup(client);
+ if (error)
+ return error;
+
+ error = silead_ts_request_input_dev(data);
+ if (error)
+ return error;
+
+ error = devm_request_threaded_irq(dev, client->irq,
+ NULL, silead_ts_threaded_irq_handler,
+ IRQF_ONESHOT, client->name, data);
+ if (error) {
+ if (error != -EPROBE_DEFER)
+ dev_err(dev, "IRQ request failed %d\n", error);
+ return error;
+ }
+
+ return 0;
+}
+
+static int __maybe_unused silead_ts_suspend(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+
+ silead_ts_set_power(client, SILEAD_POWER_OFF);
+ return 0;
+}
+
+static int __maybe_unused silead_ts_resume(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ int error, status;
+
+ silead_ts_set_power(client, SILEAD_POWER_ON);
+
+ error = silead_ts_reset(client);
+ if (error)
+ return error;
+
+ error = silead_ts_startup(client);
+ if (error)
+ return error;
+
+ status = silead_ts_get_status(client);
+ if (status != SILEAD_STATUS_OK) {
+ dev_err(dev, "Resume error, status: 0x%02x\n", status);
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(silead_ts_pm, silead_ts_suspend, silead_ts_resume);
+
+static const struct i2c_device_id silead_ts_id[] = {
+ { "gsl1680", 0 },
+ { "gsl1688", 0 },
+ { "gsl3670", 0 },
+ { "gsl3675", 0 },
+ { "gsl3692", 0 },
+ { "mssl1680", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, silead_ts_id);
+
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id silead_ts_acpi_match[] = {
+ { "GSL1680", 0 },
+ { "GSL1688", 0 },
+ { "GSL3670", 0 },
+ { "GSL3675", 0 },
+ { "GSL3692", 0 },
+ { "MSSL1680", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(acpi, silead_ts_acpi_match);
+#endif
+
+static struct i2c_driver silead_ts_driver = {
+ .probe = silead_ts_probe,
+ .id_table = silead_ts_id,
+ .driver = {
+ .name = SILEAD_TS_NAME,
+ .acpi_match_table = ACPI_PTR(silead_ts_acpi_match),
+ .pm = &silead_ts_pm,
+ },
+};
+module_i2c_driver(silead_ts_driver);
+
+MODULE_AUTHOR("Robert Dolca <robert.dolca@intel.com>");
+MODULE_DESCRIPTION("Silead I2C touchscreen driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/touchscreen/sis_i2c.c b/drivers/input/touchscreen/sis_i2c.c
new file mode 100644
index 000000000000..8d93f8c9a403
--- /dev/null
+++ b/drivers/input/touchscreen/sis_i2c.c
@@ -0,0 +1,413 @@
+/*
+ * Touch Screen driver for SiS 9200 family I2C Touch panels
+ *
+ * Copyright (C) 2015 SiS, Inc.
+ * Copyright (C) 2016 Nextfour Group
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/crc-itu-t.h>
+#include <linux/delay.h>
+#include <linux/i2c.h>
+#include <linux/input.h>
+#include <linux/input/mt.h>
+#include <linux/interrupt.h>
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <asm/unaligned.h>
+
+#define SIS_I2C_NAME "sis_i2c_ts"
+
+/*
+ * The I2C packet format:
+ * le16 byte count
+ * u8 Report ID
+ * <contact data - variable length>
+ * u8 Number of contacts
+ * le16 Scan Time (optional)
+ * le16 CRC
+ *
+ * One touch point information consists of 6+ bytes, the order is:
+ * u8 contact state
+ * u8 finger id
+ * le16 x axis
+ * le16 y axis
+ * u8 contact width (optional)
+ * u8 contact height (optional)
+ * u8 pressure (optional)
+ *
+ * Maximum amount of data transmitted in one shot is 64 bytes, if controller
+ * needs to report more contacts than fit in one packet it will send true
+ * number of contacts in first packet and 0 as number of contacts in second
+ * packet.
+ */
+
+#define SIS_MAX_PACKET_SIZE 64
+
+#define SIS_PKT_LEN_OFFSET 0
+#define SIS_PKT_REPORT_OFFSET 2 /* Report ID/type */
+#define SIS_PKT_CONTACT_OFFSET 3 /* First contact */
+
+#define SIS_SCAN_TIME_LEN 2
+
+/* Supported report types */
+#define SIS_ALL_IN_ONE_PACKAGE 0x10
+#define SIS_PKT_IS_TOUCH(x) (((x) & 0x0f) == 0x01)
+#define SIS_PKT_IS_HIDI2C(x) (((x) & 0x0f) == 0x06)
+
+/* Contact properties within report */
+#define SIS_PKT_HAS_AREA(x) ((x) & BIT(4))
+#define SIS_PKT_HAS_PRESSURE(x) ((x) & BIT(5))
+#define SIS_PKT_HAS_SCANTIME(x) ((x) & BIT(6))
+
+/* Contact size */
+#define SIS_BASE_LEN_PER_CONTACT 6
+#define SIS_AREA_LEN_PER_CONTACT 2
+#define SIS_PRESSURE_LEN_PER_CONTACT 1
+
+/* Offsets within contact data */
+#define SIS_CONTACT_STATUS_OFFSET 0
+#define SIS_CONTACT_ID_OFFSET 1 /* Contact ID */
+#define SIS_CONTACT_X_OFFSET 2
+#define SIS_CONTACT_Y_OFFSET 4
+#define SIS_CONTACT_WIDTH_OFFSET 6
+#define SIS_CONTACT_HEIGHT_OFFSET 7
+#define SIS_CONTACT_PRESSURE_OFFSET(id) (SIS_PKT_HAS_AREA(id) ? 8 : 6)
+
+/* Individual contact state */
+#define SIS_STATUS_UP 0x0
+#define SIS_STATUS_DOWN 0x3
+
+/* Touchscreen parameters */
+#define SIS_MAX_FINGERS 10
+#define SIS_MAX_X 4095
+#define SIS_MAX_Y 4095
+#define SIS_MAX_PRESSURE 255
+
+/* Resolution diagonal */
+#define SIS_AREA_LENGTH_LONGER 5792
+/*((SIS_MAX_X^2) + (SIS_MAX_Y^2))^0.5*/
+#define SIS_AREA_LENGTH_SHORT 5792
+#define SIS_AREA_UNIT (5792 / 32)
+
+struct sis_ts_data {
+ struct i2c_client *client;
+ struct input_dev *input;
+
+ struct gpio_desc *attn_gpio;
+ struct gpio_desc *reset_gpio;
+
+ u8 packet[SIS_MAX_PACKET_SIZE];
+};
+
+static int sis_read_packet(struct i2c_client *client, u8 *buf,
+ unsigned int *num_contacts,
+ unsigned int *contact_size)
+{
+ int count_idx;
+ int ret;
+ u16 len;
+ u16 crc, pkg_crc;
+ u8 report_id;
+
+ ret = i2c_master_recv(client, buf, SIS_MAX_PACKET_SIZE);
+ if (ret <= 0)
+ return -EIO;
+
+ len = get_unaligned_le16(&buf[SIS_PKT_LEN_OFFSET]);
+ if (len > SIS_MAX_PACKET_SIZE) {
+ dev_err(&client->dev,
+ "%s: invalid packet length (%d vs %d)\n",
+ __func__, len, SIS_MAX_PACKET_SIZE);
+ return -E2BIG;
+ }
+
+ if (len < 10)
+ return -EINVAL;
+
+ report_id = buf[SIS_PKT_REPORT_OFFSET];
+ count_idx = len - 1;
+ *contact_size = SIS_BASE_LEN_PER_CONTACT;
+
+ if (report_id != SIS_ALL_IN_ONE_PACKAGE) {
+ if (SIS_PKT_IS_TOUCH(report_id)) {
+ /*
+ * Calculate CRC ignoring packet length
+ * in the beginning and CRC transmitted
+ * at the end of the packet.
+ */
+ crc = crc_itu_t(0, buf + 2, len - 2 - 2);
+ pkg_crc = get_unaligned_le16(&buf[len - 2]);
+
+ if (crc != pkg_crc) {
+ dev_err(&client->dev,
+ "%s: CRC Error (%d vs %d)\n",
+ __func__, crc, pkg_crc);
+ return -EINVAL;
+ }
+
+ count_idx -= 2;
+
+ } else if (!SIS_PKT_IS_HIDI2C(report_id)) {
+ dev_err(&client->dev,
+ "%s: invalid packet ID %#02x\n",
+ __func__, report_id);
+ return -EINVAL;
+ }
+
+ if (SIS_PKT_HAS_SCANTIME(report_id))
+ count_idx -= SIS_SCAN_TIME_LEN;
+
+ if (SIS_PKT_HAS_AREA(report_id))
+ *contact_size += SIS_AREA_LEN_PER_CONTACT;
+ if (SIS_PKT_HAS_PRESSURE(report_id))
+ *contact_size += SIS_PRESSURE_LEN_PER_CONTACT;
+ }
+
+ *num_contacts = buf[count_idx];
+ return 0;
+}
+
+static int sis_ts_report_contact(struct sis_ts_data *ts, const u8 *data, u8 id)
+{
+ struct input_dev *input = ts->input;
+ int slot;
+ u8 status = data[SIS_CONTACT_STATUS_OFFSET];
+ u8 pressure;
+ u8 height, width;
+ u16 x, y;
+
+ if (status != SIS_STATUS_DOWN && status != SIS_STATUS_UP) {
+ dev_err(&ts->client->dev, "Unexpected touch status: %#02x\n",
+ data[SIS_CONTACT_STATUS_OFFSET]);
+ return -EINVAL;
+ }
+
+ slot = input_mt_get_slot_by_key(input, data[SIS_CONTACT_ID_OFFSET]);
+ if (slot < 0)
+ return -ENOENT;
+
+ input_mt_slot(input, slot);
+ input_mt_report_slot_state(input, MT_TOOL_FINGER,
+ status == SIS_STATUS_DOWN);
+
+ if (status == SIS_STATUS_DOWN) {
+ pressure = height = width = 1;
+ if (id != SIS_ALL_IN_ONE_PACKAGE) {
+ if (SIS_PKT_HAS_AREA(id)) {
+ width = data[SIS_CONTACT_WIDTH_OFFSET];
+ height = data[SIS_CONTACT_HEIGHT_OFFSET];
+ }
+
+ if (SIS_PKT_HAS_PRESSURE(id))
+ pressure =
+ data[SIS_CONTACT_PRESSURE_OFFSET(id)];
+ }
+
+ x = get_unaligned_le16(&data[SIS_CONTACT_X_OFFSET]);
+ y = get_unaligned_le16(&data[SIS_CONTACT_Y_OFFSET]);
+
+ input_report_abs(input, ABS_MT_TOUCH_MAJOR,
+ width * SIS_AREA_UNIT);
+ input_report_abs(input, ABS_MT_TOUCH_MINOR,
+ height * SIS_AREA_UNIT);
+ input_report_abs(input, ABS_MT_PRESSURE, pressure);
+ input_report_abs(input, ABS_MT_POSITION_X, x);
+ input_report_abs(input, ABS_MT_POSITION_Y, y);
+ }
+
+ return 0;
+}
+
+static void sis_ts_handle_packet(struct sis_ts_data *ts)
+{
+ const u8 *contact;
+ unsigned int num_to_report = 0;
+ unsigned int num_contacts;
+ unsigned int num_reported;
+ unsigned int contact_size;
+ int error;
+ u8 report_id;
+
+ do {
+ error = sis_read_packet(ts->client, ts->packet,
+ &num_contacts, &contact_size);
+ if (error)
+ break;
+
+ if (num_to_report == 0) {
+ num_to_report = num_contacts;
+ } else if (num_contacts != 0) {
+ dev_err(&ts->client->dev,
+ "%s: nonzero (%d) point count in tail packet\n",
+ __func__, num_contacts);
+ break;
+ }
+
+ report_id = ts->packet[SIS_PKT_REPORT_OFFSET];
+ contact = &ts->packet[SIS_PKT_CONTACT_OFFSET];
+ num_reported = 0;
+
+ while (num_to_report > 0) {
+ error = sis_ts_report_contact(ts, contact, report_id);
+ if (error)
+ break;
+
+ contact += contact_size;
+ num_to_report--;
+ num_reported++;
+
+ if (report_id != SIS_ALL_IN_ONE_PACKAGE &&
+ num_reported >= 5) {
+ /*
+ * The remainder of contacts is sent
+ * in the 2nd packet.
+ */
+ break;
+ }
+ }
+ } while (num_to_report > 0);
+
+ input_mt_sync_frame(ts->input);
+ input_sync(ts->input);
+}
+
+static irqreturn_t sis_ts_irq_handler(int irq, void *dev_id)
+{
+ struct sis_ts_data *ts = dev_id;
+
+ do {
+ sis_ts_handle_packet(ts);
+ } while (ts->attn_gpio && gpiod_get_value_cansleep(ts->attn_gpio));
+
+ return IRQ_HANDLED;
+}
+
+static void sis_ts_reset(struct sis_ts_data *ts)
+{
+ if (ts->reset_gpio) {
+ /* Get out of reset */
+ usleep_range(1000, 2000);
+ gpiod_set_value(ts->reset_gpio, 1);
+ usleep_range(1000, 2000);
+ gpiod_set_value(ts->reset_gpio, 0);
+ msleep(100);
+ }
+}
+
+static int sis_ts_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct sis_ts_data *ts;
+ struct input_dev *input;
+ int error;
+
+ ts = devm_kzalloc(&client->dev, sizeof(*ts), GFP_KERNEL);
+ if (!ts)
+ return -ENOMEM;
+
+ ts->client = client;
+ i2c_set_clientdata(client, ts);
+
+ ts->attn_gpio = devm_gpiod_get_optional(&client->dev,
+ "attn", GPIOD_IN);
+ if (IS_ERR(ts->attn_gpio)) {
+ error = PTR_ERR(ts->attn_gpio);
+ if (error != -EPROBE_DEFER)
+ dev_err(&client->dev,
+ "Failed to get attention GPIO: %d\n", error);
+ return error;
+ }
+
+ ts->reset_gpio = devm_gpiod_get_optional(&client->dev,
+ "reset", GPIOD_OUT_LOW);
+ if (IS_ERR(ts->reset_gpio)) {
+ error = PTR_ERR(ts->reset_gpio);
+ if (error != -EPROBE_DEFER)
+ dev_err(&client->dev,
+ "Failed to get reset GPIO: %d\n", error);
+ return error;
+ }
+
+ sis_ts_reset(ts);
+
+ ts->input = input = devm_input_allocate_device(&client->dev);
+ if (!input) {
+ dev_err(&client->dev, "Failed to allocate input device\n");
+ return -ENOMEM;
+ }
+
+ input->name = "SiS Touchscreen";
+ input->id.bustype = BUS_I2C;
+
+ input_set_abs_params(input, ABS_MT_POSITION_X, 0, SIS_MAX_X, 0, 0);
+ input_set_abs_params(input, ABS_MT_POSITION_Y, 0, SIS_MAX_Y, 0, 0);
+ input_set_abs_params(input, ABS_MT_PRESSURE, 0, SIS_MAX_PRESSURE, 0, 0);
+ input_set_abs_params(input, ABS_MT_TOUCH_MAJOR,
+ 0, SIS_AREA_LENGTH_LONGER, 0, 0);
+ input_set_abs_params(input, ABS_MT_TOUCH_MINOR,
+ 0, SIS_AREA_LENGTH_SHORT, 0, 0);
+
+ error = input_mt_init_slots(input, SIS_MAX_FINGERS, INPUT_MT_DIRECT);
+ if (error) {
+ dev_err(&client->dev,
+ "Failed to initialize MT slots: %d\n", error);
+ return error;
+ }
+
+ error = devm_request_threaded_irq(&client->dev, client->irq,
+ NULL, sis_ts_irq_handler,
+ IRQF_ONESHOT,
+ client->name, ts);
+ if (error) {
+ dev_err(&client->dev, "Failed to request IRQ: %d\n", error);
+ return error;
+ }
+
+ error = input_register_device(ts->input);
+ if (error) {
+ dev_err(&client->dev,
+ "Failed to register input device: %d\n", error);
+ return error;
+ }
+
+ return 0;
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id sis_ts_dt_ids[] = {
+ { .compatible = "sis,9200-ts" },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, sis_ts_dt_ids);
+#endif
+
+static const struct i2c_device_id sis_ts_id[] = {
+ { SIS_I2C_NAME, 0 },
+ { "9200-ts", 0 },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(i2c, sis_ts_id);
+
+static struct i2c_driver sis_ts_driver = {
+ .driver = {
+ .name = SIS_I2C_NAME,
+ .of_match_table = of_match_ptr(sis_ts_dt_ids),
+ },
+ .probe = sis_ts_probe,
+ .id_table = sis_ts_id,
+};
+module_i2c_driver(sis_ts_driver);
+
+MODULE_DESCRIPTION("SiS 9200 Family Touchscreen Driver");
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Mika Penttilä <mika.penttila@nextfour.com>");
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 33c177ba93be..96de97a46079 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -2375,7 +2375,7 @@ static void __unmap_single(struct dma_ops_domain *dma_dom,
static dma_addr_t map_page(struct device *dev, struct page *page,
unsigned long offset, size_t size,
enum dma_data_direction dir,
- struct dma_attrs *attrs)
+ unsigned long attrs)
{
phys_addr_t paddr = page_to_phys(page) + offset;
struct protection_domain *domain;
@@ -2398,7 +2398,7 @@ static dma_addr_t map_page(struct device *dev, struct page *page,
* The exported unmap_single function for dma_ops.
*/
static void unmap_page(struct device *dev, dma_addr_t dma_addr, size_t size,
- enum dma_data_direction dir, struct dma_attrs *attrs)
+ enum dma_data_direction dir, unsigned long attrs)
{
struct protection_domain *domain;
struct dma_ops_domain *dma_dom;
@@ -2444,7 +2444,7 @@ static int sg_num_pages(struct device *dev,
*/
static int map_sg(struct device *dev, struct scatterlist *sglist,
int nelems, enum dma_data_direction direction,
- struct dma_attrs *attrs)
+ unsigned long attrs)
{
int mapped_pages = 0, npages = 0, prot = 0, i;
struct protection_domain *domain;
@@ -2525,7 +2525,7 @@ out_err:
*/
static void unmap_sg(struct device *dev, struct scatterlist *sglist,
int nelems, enum dma_data_direction dir,
- struct dma_attrs *attrs)
+ unsigned long attrs)
{
struct protection_domain *domain;
struct dma_ops_domain *dma_dom;
@@ -2548,7 +2548,7 @@ static void unmap_sg(struct device *dev, struct scatterlist *sglist,
*/
static void *alloc_coherent(struct device *dev, size_t size,
dma_addr_t *dma_addr, gfp_t flag,
- struct dma_attrs *attrs)
+ unsigned long attrs)
{
u64 dma_mask = dev->coherent_dma_mask;
struct protection_domain *domain;
@@ -2604,7 +2604,7 @@ out_free:
*/
static void free_coherent(struct device *dev, size_t size,
void *virt_addr, dma_addr_t dma_addr,
- struct dma_attrs *attrs)
+ unsigned long attrs)
{
struct protection_domain *domain;
struct dma_ops_domain *dma_dom;
diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c
index ea5a9ebf0f78..00c8a08d56e7 100644
--- a/drivers/iommu/dma-iommu.c
+++ b/drivers/iommu/dma-iommu.c
@@ -68,7 +68,8 @@ void iommu_put_dma_cookie(struct iommu_domain *domain)
if (!iovad)
return;
- put_iova_domain(iovad);
+ if (iovad->granule)
+ put_iova_domain(iovad);
kfree(iovad);
domain->iova_cookie = NULL;
}
@@ -151,12 +152,15 @@ int dma_direction_to_prot(enum dma_data_direction dir, bool coherent)
}
}
-static struct iova *__alloc_iova(struct iova_domain *iovad, size_t size,
+static struct iova *__alloc_iova(struct iommu_domain *domain, size_t size,
dma_addr_t dma_limit)
{
+ struct iova_domain *iovad = domain->iova_cookie;
unsigned long shift = iova_shift(iovad);
unsigned long length = iova_align(iovad, size) >> shift;
+ if (domain->geometry.force_aperture)
+ dma_limit = min(dma_limit, domain->geometry.aperture_end);
/*
* Enforce size-alignment to be safe - there could perhaps be an
* attribute to control this per-device, or at least per-domain...
@@ -286,7 +290,7 @@ void iommu_dma_free(struct device *dev, struct page **pages, size_t size,
* or NULL on failure.
*/
struct page **iommu_dma_alloc(struct device *dev, size_t size, gfp_t gfp,
- struct dma_attrs *attrs, int prot, dma_addr_t *handle,
+ unsigned long attrs, int prot, dma_addr_t *handle,
void (*flush_page)(struct device *, const void *, phys_addr_t))
{
struct iommu_domain *domain = iommu_get_domain_for_dev(dev);
@@ -306,7 +310,7 @@ struct page **iommu_dma_alloc(struct device *dev, size_t size, gfp_t gfp,
} else {
size = ALIGN(size, min_size);
}
- if (dma_get_attr(DMA_ATTR_ALLOC_SINGLE_PAGES, attrs))
+ if (attrs & DMA_ATTR_ALLOC_SINGLE_PAGES)
alloc_sizes = min_size;
count = PAGE_ALIGN(size) >> PAGE_SHIFT;
@@ -314,7 +318,7 @@ struct page **iommu_dma_alloc(struct device *dev, size_t size, gfp_t gfp,
if (!pages)
return NULL;
- iova = __alloc_iova(iovad, size, dev->coherent_dma_mask);
+ iova = __alloc_iova(domain, size, dev->coherent_dma_mask);
if (!iova)
goto out_free_pages;
@@ -386,7 +390,7 @@ dma_addr_t iommu_dma_map_page(struct device *dev, struct page *page,
phys_addr_t phys = page_to_phys(page) + offset;
size_t iova_off = iova_offset(iovad, phys);
size_t len = iova_align(iovad, size + iova_off);
- struct iova *iova = __alloc_iova(iovad, len, dma_get_mask(dev));
+ struct iova *iova = __alloc_iova(domain, len, dma_get_mask(dev));
if (!iova)
return DMA_ERROR_CODE;
@@ -400,7 +404,7 @@ dma_addr_t iommu_dma_map_page(struct device *dev, struct page *page,
}
void iommu_dma_unmap_page(struct device *dev, dma_addr_t handle, size_t size,
- enum dma_data_direction dir, struct dma_attrs *attrs)
+ enum dma_data_direction dir, unsigned long attrs)
{
__iommu_dma_unmap(iommu_get_domain_for_dev(dev), handle);
}
@@ -538,7 +542,7 @@ int iommu_dma_map_sg(struct device *dev, struct scatterlist *sg,
prev = s;
}
- iova = __alloc_iova(iovad, iova_len, dma_get_mask(dev));
+ iova = __alloc_iova(domain, iova_len, dma_get_mask(dev));
if (!iova)
goto out_restore_sg;
@@ -560,7 +564,7 @@ out_restore_sg:
}
void iommu_dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nents,
- enum dma_data_direction dir, struct dma_attrs *attrs)
+ enum dma_data_direction dir, unsigned long attrs)
{
/*
* The scatterlist segments are mapped into a single
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index afbaa2c69a59..ebb5bf3ddbd9 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -3552,7 +3552,7 @@ error:
static dma_addr_t intel_map_page(struct device *dev, struct page *page,
unsigned long offset, size_t size,
enum dma_data_direction dir,
- struct dma_attrs *attrs)
+ unsigned long attrs)
{
return __intel_map_single(dev, page_to_phys(page) + offset, size,
dir, *dev->dma_mask);
@@ -3711,14 +3711,14 @@ static void intel_unmap(struct device *dev, dma_addr_t dev_addr, size_t size)
static void intel_unmap_page(struct device *dev, dma_addr_t dev_addr,
size_t size, enum dma_data_direction dir,
- struct dma_attrs *attrs)
+ unsigned long attrs)
{
intel_unmap(dev, dev_addr, size);
}
static void *intel_alloc_coherent(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t flags,
- struct dma_attrs *attrs)
+ unsigned long attrs)
{
struct page *page = NULL;
int order;
@@ -3764,7 +3764,7 @@ static void *intel_alloc_coherent(struct device *dev, size_t size,
}
static void intel_free_coherent(struct device *dev, size_t size, void *vaddr,
- dma_addr_t dma_handle, struct dma_attrs *attrs)
+ dma_addr_t dma_handle, unsigned long attrs)
{
int order;
struct page *page = virt_to_page(vaddr);
@@ -3779,7 +3779,7 @@ static void intel_free_coherent(struct device *dev, size_t size, void *vaddr,
static void intel_unmap_sg(struct device *dev, struct scatterlist *sglist,
int nelems, enum dma_data_direction dir,
- struct dma_attrs *attrs)
+ unsigned long attrs)
{
dma_addr_t startaddr = sg_dma_address(sglist) & PAGE_MASK;
unsigned long nrpages = 0;
@@ -3808,7 +3808,7 @@ static int intel_nontranslate_map_sg(struct device *hddev,
}
static int intel_map_sg(struct device *dev, struct scatterlist *sglist, int nelems,
- enum dma_data_direction dir, struct dma_attrs *attrs)
+ enum dma_data_direction dir, unsigned long attrs)
{
int i;
struct dmar_domain *domain;
diff --git a/drivers/iommu/mtk_iommu.h b/drivers/iommu/mtk_iommu.h
index 9ed0a8462ccf..3dab13b4a211 100644
--- a/drivers/iommu/mtk_iommu.h
+++ b/drivers/iommu/mtk_iommu.h
@@ -55,19 +55,19 @@ struct mtk_iommu_data {
bool enable_4GB;
};
-static int compare_of(struct device *dev, void *data)
+static inline int compare_of(struct device *dev, void *data)
{
return dev->of_node == data;
}
-static int mtk_iommu_bind(struct device *dev)
+static inline int mtk_iommu_bind(struct device *dev)
{
struct mtk_iommu_data *data = dev_get_drvdata(dev);
return component_bind_all(dev, &data->smi_imu);
}
-static void mtk_iommu_unbind(struct device *dev)
+static inline void mtk_iommu_unbind(struct device *dev)
{
struct mtk_iommu_data *data = dev_get_drvdata(dev);
diff --git a/drivers/irqchip/irq-mips-gic.c b/drivers/irqchip/irq-mips-gic.c
index 3786d0f21972..c5f33c3bd228 100644
--- a/drivers/irqchip/irq-mips-gic.c
+++ b/drivers/irqchip/irq-mips-gic.c
@@ -359,7 +359,7 @@ static void gic_handle_shared_int(bool chained)
pending_reg += gic_reg_step;
intrmask_reg += gic_reg_step;
- if (!config_enabled(CONFIG_64BIT) || mips_cm_is64)
+ if (!IS_ENABLED(CONFIG_64BIT) || mips_cm_is64)
continue;
pending[i] |= (u64)gic_read(pending_reg) << 32;
diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c
index 69f16f43f8ab..4b177fe11ebb 100644
--- a/drivers/md/bcache/request.c
+++ b/drivers/md/bcache/request.c
@@ -208,7 +208,7 @@ static void bch_data_insert_start(struct closure *cl)
* Journal writes are marked REQ_PREFLUSH; if the original write was a
* flush, it'll wait on the journal write.
*/
- bio->bi_rw &= ~(REQ_PREFLUSH|REQ_FUA);
+ bio->bi_opf &= ~(REQ_PREFLUSH|REQ_FUA);
do {
unsigned i;
@@ -405,7 +405,7 @@ static bool check_should_bypass(struct cached_dev *dc, struct bio *bio)
if (!congested &&
mode == CACHE_MODE_WRITEBACK &&
op_is_write(bio_op(bio)) &&
- (bio->bi_rw & REQ_SYNC))
+ (bio->bi_opf & REQ_SYNC))
goto rescale;
spin_lock(&dc->io_lock);
@@ -668,7 +668,7 @@ static inline struct search *search_alloc(struct bio *bio,
s->iop.write_prio = 0;
s->iop.error = 0;
s->iop.flags = 0;
- s->iop.flush_journal = (bio->bi_rw & (REQ_PREFLUSH|REQ_FUA)) != 0;
+ s->iop.flush_journal = (bio->bi_opf & (REQ_PREFLUSH|REQ_FUA)) != 0;
s->iop.wq = bcache_wq;
return s;
@@ -796,8 +796,8 @@ static int cached_dev_cache_miss(struct btree *b, struct search *s,
goto out_submit;
}
- if (!(bio->bi_rw & REQ_RAHEAD) &&
- !(bio->bi_rw & REQ_META) &&
+ if (!(bio->bi_opf & REQ_RAHEAD) &&
+ !(bio->bi_opf & REQ_META) &&
s->iop.c->gc_stats.in_use < CUTOFF_CACHE_READA)
reada = min_t(sector_t, dc->readahead >> 9,
bdev_sectors(bio->bi_bdev) - bio_end_sector(bio));
@@ -920,7 +920,7 @@ static void cached_dev_write(struct cached_dev *dc, struct search *s)
bch_writeback_add(dc);
s->iop.bio = bio;
- if (bio->bi_rw & REQ_PREFLUSH) {
+ if (bio->bi_opf & REQ_PREFLUSH) {
/* Also need to send a flush to the backing device */
struct bio *flush = bio_alloc_bioset(GFP_NOIO, 0,
dc->disk.bio_split);
diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c
index 88ef6d14cce3..95a4ca6ce6ff 100644
--- a/drivers/md/bcache/super.c
+++ b/drivers/md/bcache/super.c
@@ -347,7 +347,7 @@ static void uuid_io(struct cache_set *c, int op, unsigned long op_flags,
for (i = 0; i < KEY_PTRS(k); i++) {
struct bio *bio = bch_bbio_alloc(c);
- bio->bi_rw = REQ_SYNC|REQ_META|op_flags;
+ bio->bi_opf = REQ_SYNC | REQ_META | op_flags;
bio->bi_iter.bi_size = KEY_SIZE(k) << 9;
bio->bi_end_io = uuid_endio;
diff --git a/drivers/md/bcache/writeback.h b/drivers/md/bcache/writeback.h
index 073a042aed24..301eaf565167 100644
--- a/drivers/md/bcache/writeback.h
+++ b/drivers/md/bcache/writeback.h
@@ -57,7 +57,7 @@ static inline bool should_writeback(struct cached_dev *dc, struct bio *bio,
if (would_skip)
return false;
- return bio->bi_rw & REQ_SYNC ||
+ return bio->bi_opf & REQ_SYNC ||
in_use <= CUTOFF_WRITEBACK;
}
diff --git a/drivers/md/dm-cache-target.c b/drivers/md/dm-cache-target.c
index 718744db62df..59b2c50562e4 100644
--- a/drivers/md/dm-cache-target.c
+++ b/drivers/md/dm-cache-target.c
@@ -788,7 +788,7 @@ static void check_if_tick_bio_needed(struct cache *cache, struct bio *bio)
spin_lock_irqsave(&cache->lock, flags);
if (cache->need_tick_bio &&
- !(bio->bi_rw & (REQ_FUA | REQ_PREFLUSH)) &&
+ !(bio->bi_opf & (REQ_FUA | REQ_PREFLUSH)) &&
bio_op(bio) != REQ_OP_DISCARD) {
pb->tick = true;
cache->need_tick_bio = false;
@@ -830,7 +830,7 @@ static dm_oblock_t get_bio_block(struct cache *cache, struct bio *bio)
static int bio_triggers_commit(struct cache *cache, struct bio *bio)
{
- return bio->bi_rw & (REQ_PREFLUSH | REQ_FUA);
+ return bio->bi_opf & (REQ_PREFLUSH | REQ_FUA);
}
/*
@@ -1069,7 +1069,7 @@ static void dec_io_migrations(struct cache *cache)
static bool discard_or_flush(struct bio *bio)
{
return bio_op(bio) == REQ_OP_DISCARD ||
- bio->bi_rw & (REQ_PREFLUSH | REQ_FUA);
+ bio->bi_opf & (REQ_PREFLUSH | REQ_FUA);
}
static void __cell_defer(struct cache *cache, struct dm_bio_prison_cell *cell)
@@ -1980,7 +1980,7 @@ static void process_deferred_bios(struct cache *cache)
bio = bio_list_pop(&bios);
- if (bio->bi_rw & REQ_PREFLUSH)
+ if (bio->bi_opf & REQ_PREFLUSH)
process_flush_bio(cache, bio);
else if (bio_op(bio) == REQ_OP_DISCARD)
process_discard_bio(cache, &structs, bio);
diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
index 8f2e3e2ffd26..4e9784b4e0ac 100644
--- a/drivers/md/dm-crypt.c
+++ b/drivers/md/dm-crypt.c
@@ -1136,7 +1136,7 @@ static void clone_init(struct dm_crypt_io *io, struct bio *clone)
clone->bi_private = io;
clone->bi_end_io = crypt_endio;
clone->bi_bdev = cc->dev->bdev;
- bio_set_op_attrs(clone, bio_op(io->base_bio), io->base_bio->bi_rw);
+ bio_set_op_attrs(clone, bio_op(io->base_bio), io->base_bio->bi_opf);
}
static int kcryptd_io_read(struct dm_crypt_io *io, gfp_t gfp)
@@ -1915,7 +1915,7 @@ static int crypt_map(struct dm_target *ti, struct bio *bio)
* - for REQ_PREFLUSH device-mapper core ensures that no IO is in-flight
* - for REQ_OP_DISCARD caller must use flush if IO ordering matters
*/
- if (unlikely(bio->bi_rw & REQ_PREFLUSH ||
+ if (unlikely(bio->bi_opf & REQ_PREFLUSH ||
bio_op(bio) == REQ_OP_DISCARD)) {
bio->bi_bdev = cc->dev->bdev;
if (bio_sectors(bio))
diff --git a/drivers/md/dm-era-target.c b/drivers/md/dm-era-target.c
index 2faf49d8f4d7..bf2b2676cb8a 100644
--- a/drivers/md/dm-era-target.c
+++ b/drivers/md/dm-era-target.c
@@ -1542,7 +1542,7 @@ static int era_map(struct dm_target *ti, struct bio *bio)
/*
* REQ_PREFLUSH bios carry no data, so we're not interested in them.
*/
- if (!(bio->bi_rw & REQ_PREFLUSH) &&
+ if (!(bio->bi_opf & REQ_PREFLUSH) &&
(bio_data_dir(bio) == WRITE) &&
!metadata_current_marked(era->md, block)) {
defer_bio(era, bio);
diff --git a/drivers/md/dm-flakey.c b/drivers/md/dm-flakey.c
index 29b99fb6a16a..97e446d54a15 100644
--- a/drivers/md/dm-flakey.c
+++ b/drivers/md/dm-flakey.c
@@ -16,7 +16,7 @@
#define DM_MSG_PREFIX "flakey"
#define all_corrupt_bio_flags_match(bio, fc) \
- (((bio)->bi_rw & (fc)->corrupt_bio_flags) == (fc)->corrupt_bio_flags)
+ (((bio)->bi_opf & (fc)->corrupt_bio_flags) == (fc)->corrupt_bio_flags)
/*
* Flakey: Used for testing only, simulates intermittent,
@@ -266,9 +266,9 @@ static void corrupt_bio_data(struct bio *bio, struct flakey_c *fc)
data[fc->corrupt_bio_byte - 1] = fc->corrupt_bio_value;
DMDEBUG("Corrupting data bio=%p by writing %u to byte %u "
- "(rw=%c bi_rw=%u bi_sector=%llu cur_bytes=%u)\n",
+ "(rw=%c bi_opf=%u bi_sector=%llu cur_bytes=%u)\n",
bio, fc->corrupt_bio_value, fc->corrupt_bio_byte,
- (bio_data_dir(bio) == WRITE) ? 'w' : 'r', bio->bi_rw,
+ (bio_data_dir(bio) == WRITE) ? 'w' : 'r', bio->bi_opf,
(unsigned long long)bio->bi_iter.bi_sector, bio_bytes);
}
}
@@ -289,10 +289,16 @@ static int flakey_map(struct dm_target *ti, struct bio *bio)
pb->bio_submitted = true;
/*
- * Map reads as normal.
+ * Map reads as normal only if corrupt_bio_byte set.
*/
- if (bio_data_dir(bio) == READ)
- goto map_bio;
+ if (bio_data_dir(bio) == READ) {
+ /* If flags were specified, only corrupt those that match. */
+ if (fc->corrupt_bio_byte && (fc->corrupt_bio_rw == READ) &&
+ all_corrupt_bio_flags_match(bio, fc))
+ goto map_bio;
+ else
+ return -EIO;
+ }
/*
* Drop writes?
@@ -330,12 +336,13 @@ static int flakey_end_io(struct dm_target *ti, struct bio *bio, int error)
/*
* Corrupt successful READs while in down state.
- * If flags were specified, only corrupt those that match.
*/
- if (fc->corrupt_bio_byte && !error && pb->bio_submitted &&
- (bio_data_dir(bio) == READ) && (fc->corrupt_bio_rw == READ) &&
- all_corrupt_bio_flags_match(bio, fc))
- corrupt_bio_data(bio, fc);
+ if (!error && pb->bio_submitted && (bio_data_dir(bio) == READ)) {
+ if (fc->corrupt_bio_byte)
+ corrupt_bio_data(bio, fc);
+ else
+ return -EIO;
+ }
return error;
}
diff --git a/drivers/md/dm-io.c b/drivers/md/dm-io.c
index daa03e41654a..0bf1a12e35fe 100644
--- a/drivers/md/dm-io.c
+++ b/drivers/md/dm-io.c
@@ -505,9 +505,9 @@ static int dp_init(struct dm_io_request *io_req, struct dpages *dp,
* New collapsed (a)synchronous interface.
*
* If the IO is asynchronous (i.e. it has notify.fn), you must either unplug
- * the queue with blk_unplug() some time later or set REQ_SYNC in io_req->bi_rw.
- * If you fail to do one of these, the IO will be submitted to the disk after
- * q->unplug_delay, which defaults to 3ms in blk-settings.c.
+ * the queue with blk_unplug() some time later or set REQ_SYNC in
+ * io_req->bi_opf. If you fail to do one of these, the IO will be submitted to
+ * the disk after q->unplug_delay, which defaults to 3ms in blk-settings.c.
*/
int dm_io(struct dm_io_request *io_req, unsigned num_regions,
struct dm_io_region *where, unsigned long *sync_error_bits)
diff --git a/drivers/md/dm-log-writes.c b/drivers/md/dm-log-writes.c
index b5dbf7a0515e..4ab68033f9d1 100644
--- a/drivers/md/dm-log-writes.c
+++ b/drivers/md/dm-log-writes.c
@@ -555,8 +555,8 @@ static int log_writes_map(struct dm_target *ti, struct bio *bio)
struct bio_vec bv;
size_t alloc_size;
int i = 0;
- bool flush_bio = (bio->bi_rw & REQ_PREFLUSH);
- bool fua_bio = (bio->bi_rw & REQ_FUA);
+ bool flush_bio = (bio->bi_opf & REQ_PREFLUSH);
+ bool fua_bio = (bio->bi_opf & REQ_FUA);
bool discard_bio = (bio_op(bio) == REQ_OP_DISCARD);
pb->block = NULL;
diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c
index 7eac080fcb18..ac734e5bbe48 100644
--- a/drivers/md/dm-mpath.c
+++ b/drivers/md/dm-mpath.c
@@ -507,13 +507,27 @@ static bool __must_push_back(struct multipath *m)
static bool must_push_back_rq(struct multipath *m)
{
- return (test_bit(MPATHF_QUEUE_IF_NO_PATH, &m->flags) ||
- __must_push_back(m));
+ bool r;
+ unsigned long flags;
+
+ spin_lock_irqsave(&m->lock, flags);
+ r = (test_bit(MPATHF_QUEUE_IF_NO_PATH, &m->flags) ||
+ __must_push_back(m));
+ spin_unlock_irqrestore(&m->lock, flags);
+
+ return r;
}
static bool must_push_back_bio(struct multipath *m)
{
- return __must_push_back(m);
+ bool r;
+ unsigned long flags;
+
+ spin_lock_irqsave(&m->lock, flags);
+ r = __must_push_back(m);
+ spin_unlock_irqrestore(&m->lock, flags);
+
+ return r;
}
/*
@@ -647,7 +661,7 @@ static int __multipath_map_bio(struct multipath *m, struct bio *bio, struct dm_m
bio->bi_error = 0;
bio->bi_bdev = pgpath->path.dev->bdev;
- bio->bi_rw |= REQ_FAILFAST_TRANSPORT;
+ bio->bi_opf |= REQ_FAILFAST_TRANSPORT;
if (pgpath->pg->ps.type->start_io)
pgpath->pg->ps.type->start_io(&pgpath->pg->ps,
@@ -1680,12 +1694,14 @@ static void multipath_postsuspend(struct dm_target *ti)
static void multipath_resume(struct dm_target *ti)
{
struct multipath *m = ti->private;
+ unsigned long flags;
+ spin_lock_irqsave(&m->lock, flags);
if (test_bit(MPATHF_SAVED_QUEUE_IF_NO_PATH, &m->flags))
set_bit(MPATHF_QUEUE_IF_NO_PATH, &m->flags);
else
clear_bit(MPATHF_QUEUE_IF_NO_PATH, &m->flags);
- smp_mb__after_atomic();
+ spin_unlock_irqrestore(&m->lock, flags);
}
/*
diff --git a/drivers/md/dm-raid.c b/drivers/md/dm-raid.c
index 84983549b5e1..1b9795d75ef8 100644
--- a/drivers/md/dm-raid.c
+++ b/drivers/md/dm-raid.c
@@ -1270,7 +1270,7 @@ static int parse_raid_params(struct raid_set *rs, struct dm_arg_set *as,
}
rs->md.sync_speed_min = (int)value;
} else if (!strcasecmp(key, dm_raid_arg_name_by_flag(CTR_FLAG_MAX_RECOVERY_RATE))) {
- if (test_and_set_bit(__CTR_FLAG_MIN_RECOVERY_RATE, &rs->ctr_flags)) {
+ if (test_and_set_bit(__CTR_FLAG_MAX_RECOVERY_RATE, &rs->ctr_flags)) {
rs->ti->error = "Only one max_recovery_rate argument pair allowed";
return -EINVAL;
}
@@ -1960,6 +1960,7 @@ static void super_sync(struct mddev *mddev, struct md_rdev *rdev)
sb->data_offset = cpu_to_le64(rdev->data_offset);
sb->new_data_offset = cpu_to_le64(rdev->new_data_offset);
sb->sectors = cpu_to_le64(rdev->sectors);
+ sb->incompat_features = cpu_to_le32(0);
/* Zero out the rest of the payload after the size of the superblock */
memset(sb + 1, 0, rdev->sb_size - sizeof(*sb));
@@ -3577,7 +3578,6 @@ static int raid_preresume(struct dm_target *ti)
/* Be prepared for mddev_resume() in raid_resume() */
set_bit(MD_RECOVERY_FROZEN, &mddev->recovery);
if (mddev->recovery_cp && mddev->recovery_cp < MaxSector) {
- set_bit(MD_RECOVERY_REQUESTED, &mddev->recovery);
set_bit(MD_RECOVERY_SYNC, &mddev->recovery);
mddev->resync_min = mddev->recovery_cp;
}
diff --git a/drivers/md/dm-raid1.c b/drivers/md/dm-raid1.c
index dac55b254a09..bdf1606f67bc 100644
--- a/drivers/md/dm-raid1.c
+++ b/drivers/md/dm-raid1.c
@@ -657,7 +657,7 @@ static void do_write(struct mirror_set *ms, struct bio *bio)
struct mirror *m;
struct dm_io_request io_req = {
.bi_op = REQ_OP_WRITE,
- .bi_op_flags = bio->bi_rw & WRITE_FLUSH_FUA,
+ .bi_op_flags = bio->bi_opf & WRITE_FLUSH_FUA,
.mem.type = DM_IO_BIO,
.mem.ptr.bio = bio,
.notify.fn = write_callback,
@@ -704,7 +704,7 @@ static void do_writes(struct mirror_set *ms, struct bio_list *writes)
bio_list_init(&requeue);
while ((bio = bio_list_pop(writes))) {
- if ((bio->bi_rw & REQ_PREFLUSH) ||
+ if ((bio->bi_opf & REQ_PREFLUSH) ||
(bio_op(bio) == REQ_OP_DISCARD)) {
bio_list_add(&sync, bio);
continue;
@@ -1217,7 +1217,7 @@ static int mirror_map(struct dm_target *ti, struct bio *bio)
* If region is not in-sync queue the bio.
*/
if (!r || (r == -EWOULDBLOCK)) {
- if (bio->bi_rw & REQ_RAHEAD)
+ if (bio->bi_opf & REQ_RAHEAD)
return -EWOULDBLOCK;
queue_bio(ms, bio, rw);
@@ -1253,7 +1253,7 @@ static int mirror_end_io(struct dm_target *ti, struct bio *bio, int error)
* We need to dec pending if this was a write.
*/
if (rw == WRITE) {
- if (!(bio->bi_rw & REQ_PREFLUSH) &&
+ if (!(bio->bi_opf & REQ_PREFLUSH) &&
bio_op(bio) != REQ_OP_DISCARD)
dm_rh_dec(ms->rh, bio_record->write_region);
return error;
@@ -1262,7 +1262,7 @@ static int mirror_end_io(struct dm_target *ti, struct bio *bio, int error)
if (error == -EOPNOTSUPP)
goto out;
- if ((error == -EWOULDBLOCK) && (bio->bi_rw & REQ_RAHEAD))
+ if ((error == -EWOULDBLOCK) && (bio->bi_opf & REQ_RAHEAD))
goto out;
if (unlikely(error)) {
diff --git a/drivers/md/dm-region-hash.c b/drivers/md/dm-region-hash.c
index b11813431f31..85c32b22a420 100644
--- a/drivers/md/dm-region-hash.c
+++ b/drivers/md/dm-region-hash.c
@@ -398,7 +398,7 @@ void dm_rh_mark_nosync(struct dm_region_hash *rh, struct bio *bio)
region_t region = dm_rh_bio_to_region(rh, bio);
int recovering = 0;
- if (bio->bi_rw & REQ_PREFLUSH) {
+ if (bio->bi_opf & REQ_PREFLUSH) {
rh->flush_failure = 1;
return;
}
@@ -526,7 +526,7 @@ void dm_rh_inc_pending(struct dm_region_hash *rh, struct bio_list *bios)
struct bio *bio;
for (bio = bios->head; bio; bio = bio->bi_next) {
- if (bio->bi_rw & REQ_PREFLUSH || bio_op(bio) == REQ_OP_DISCARD)
+ if (bio->bi_opf & REQ_PREFLUSH || bio_op(bio) == REQ_OP_DISCARD)
continue;
rh_inc(rh, dm_rh_bio_to_region(rh, bio));
}
diff --git a/drivers/md/dm-rq.c b/drivers/md/dm-rq.c
index 7a9661868496..1ca7463e8bb2 100644
--- a/drivers/md/dm-rq.c
+++ b/drivers/md/dm-rq.c
@@ -78,6 +78,7 @@ void dm_start_queue(struct request_queue *q)
if (!q->mq_ops)
dm_old_start_queue(q);
else {
+ queue_flag_clear_unlocked(QUEUE_FLAG_STOPPED, q);
blk_mq_start_stopped_hw_queues(q, true);
blk_mq_kick_requeue_list(q);
}
@@ -101,8 +102,14 @@ void dm_stop_queue(struct request_queue *q)
{
if (!q->mq_ops)
dm_old_stop_queue(q);
- else
+ else {
+ spin_lock_irq(q->queue_lock);
+ queue_flag_set(QUEUE_FLAG_STOPPED, q);
+ spin_unlock_irq(q->queue_lock);
+
+ blk_mq_cancel_requeue_work(q);
blk_mq_stop_hw_queues(q);
+ }
}
static struct dm_rq_target_io *alloc_old_rq_tio(struct mapped_device *md,
@@ -864,6 +871,17 @@ static int dm_mq_queue_rq(struct blk_mq_hw_ctx *hctx,
dm_put_live_table(md, srcu_idx);
}
+ /*
+ * On suspend dm_stop_queue() handles stopping the blk-mq
+ * request_queue BUT: even though the hw_queues are marked
+ * BLK_MQ_S_STOPPED at that point there is still a race that
+ * is allowing block/blk-mq.c to call ->queue_rq against a
+ * hctx that it really shouldn't. The following check guards
+ * against this rarity (albeit _not_ race-free).
+ */
+ if (unlikely(test_bit(BLK_MQ_S_STOPPED, &hctx->state)))
+ return BLK_MQ_RQ_QUEUE_BUSY;
+
if (ti->type->busy && ti->type->busy(ti))
return BLK_MQ_RQ_QUEUE_BUSY;
diff --git a/drivers/md/dm-snap.c b/drivers/md/dm-snap.c
index ce2a910709f7..c65feeada864 100644
--- a/drivers/md/dm-snap.c
+++ b/drivers/md/dm-snap.c
@@ -1680,7 +1680,7 @@ static int snapshot_map(struct dm_target *ti, struct bio *bio)
init_tracked_chunk(bio);
- if (bio->bi_rw & REQ_PREFLUSH) {
+ if (bio->bi_opf & REQ_PREFLUSH) {
bio->bi_bdev = s->cow->bdev;
return DM_MAPIO_REMAPPED;
}
@@ -1800,7 +1800,7 @@ static int snapshot_merge_map(struct dm_target *ti, struct bio *bio)
init_tracked_chunk(bio);
- if (bio->bi_rw & REQ_PREFLUSH) {
+ if (bio->bi_opf & REQ_PREFLUSH) {
if (!dm_bio_get_target_bio_nr(bio))
bio->bi_bdev = s->origin->bdev;
else
@@ -2286,7 +2286,7 @@ static int origin_map(struct dm_target *ti, struct bio *bio)
bio->bi_bdev = o->dev->bdev;
- if (unlikely(bio->bi_rw & REQ_PREFLUSH))
+ if (unlikely(bio->bi_opf & REQ_PREFLUSH))
return DM_MAPIO_REMAPPED;
if (bio_data_dir(bio) != WRITE)
diff --git a/drivers/md/dm-stripe.c b/drivers/md/dm-stripe.c
index 83f1d4667195..28193a57bf47 100644
--- a/drivers/md/dm-stripe.c
+++ b/drivers/md/dm-stripe.c
@@ -286,7 +286,7 @@ static int stripe_map(struct dm_target *ti, struct bio *bio)
uint32_t stripe;
unsigned target_bio_nr;
- if (bio->bi_rw & REQ_PREFLUSH) {
+ if (bio->bi_opf & REQ_PREFLUSH) {
target_bio_nr = dm_bio_get_target_bio_nr(bio);
BUG_ON(target_bio_nr >= sc->stripes);
bio->bi_bdev = sc->stripe[target_bio_nr].dev->bdev;
@@ -383,7 +383,7 @@ static int stripe_end_io(struct dm_target *ti, struct bio *bio, int error)
if (!error)
return 0; /* I/O complete */
- if ((error == -EWOULDBLOCK) && (bio->bi_rw & REQ_RAHEAD))
+ if ((error == -EWOULDBLOCK) && (bio->bi_opf & REQ_RAHEAD))
return error;
if (error == -EOPNOTSUPP)
diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c
index 197ea2003400..d1c05c12a9db 100644
--- a/drivers/md/dm-thin.c
+++ b/drivers/md/dm-thin.c
@@ -699,7 +699,7 @@ static void remap_to_origin(struct thin_c *tc, struct bio *bio)
static int bio_triggers_commit(struct thin_c *tc, struct bio *bio)
{
- return (bio->bi_rw & (REQ_PREFLUSH | REQ_FUA)) &&
+ return (bio->bi_opf & (REQ_PREFLUSH | REQ_FUA)) &&
dm_thin_changed_this_transaction(tc->td);
}
@@ -870,7 +870,7 @@ static void __inc_remap_and_issue_cell(void *context,
struct bio *bio;
while ((bio = bio_list_pop(&cell->bios))) {
- if (bio->bi_rw & (REQ_PREFLUSH | REQ_FUA) ||
+ if (bio->bi_opf & (REQ_PREFLUSH | REQ_FUA) ||
bio_op(bio) == REQ_OP_DISCARD)
bio_list_add(&info->defer_bios, bio);
else {
@@ -1717,7 +1717,7 @@ static void __remap_and_issue_shared_cell(void *context,
while ((bio = bio_list_pop(&cell->bios))) {
if ((bio_data_dir(bio) == WRITE) ||
- (bio->bi_rw & (REQ_PREFLUSH | REQ_FUA) ||
+ (bio->bi_opf & (REQ_PREFLUSH | REQ_FUA) ||
bio_op(bio) == REQ_OP_DISCARD))
bio_list_add(&info->defer_bios, bio);
else {
@@ -2635,7 +2635,7 @@ static int thin_bio_map(struct dm_target *ti, struct bio *bio)
return DM_MAPIO_SUBMITTED;
}
- if (bio->bi_rw & (REQ_PREFLUSH | REQ_FUA) ||
+ if (bio->bi_opf & (REQ_PREFLUSH | REQ_FUA) ||
bio_op(bio) == REQ_OP_DISCARD) {
thin_defer_bio_with_throttle(tc, bio);
return DM_MAPIO_SUBMITTED;
diff --git a/drivers/md/dm-zero.c b/drivers/md/dm-zero.c
index 618b8752dcf1..b616f11d8473 100644
--- a/drivers/md/dm-zero.c
+++ b/drivers/md/dm-zero.c
@@ -37,7 +37,7 @@ static int zero_map(struct dm_target *ti, struct bio *bio)
{
switch (bio_op(bio)) {
case REQ_OP_READ:
- if (bio->bi_rw & REQ_RAHEAD) {
+ if (bio->bi_opf & REQ_RAHEAD) {
/* readahead of null bytes only wastes buffer cache */
return -EIO;
}
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 25d1d97154a8..fa9b1cb4438a 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -798,12 +798,12 @@ static void dec_pending(struct dm_io *io, int error)
if (io_error == DM_ENDIO_REQUEUE)
return;
- if ((bio->bi_rw & REQ_PREFLUSH) && bio->bi_iter.bi_size) {
+ if ((bio->bi_opf & REQ_PREFLUSH) && bio->bi_iter.bi_size) {
/*
* Preflush done for flush with data, reissue
* without REQ_PREFLUSH.
*/
- bio->bi_rw &= ~REQ_PREFLUSH;
+ bio->bi_opf &= ~REQ_PREFLUSH;
queue_io(md, bio);
} else {
/* done with normal IO or empty flush */
@@ -964,7 +964,7 @@ void dm_accept_partial_bio(struct bio *bio, unsigned n_sectors)
{
struct dm_target_io *tio = container_of(bio, struct dm_target_io, clone);
unsigned bi_size = bio->bi_iter.bi_size >> SECTOR_SHIFT;
- BUG_ON(bio->bi_rw & REQ_PREFLUSH);
+ BUG_ON(bio->bi_opf & REQ_PREFLUSH);
BUG_ON(bi_size > *tio->len_ptr);
BUG_ON(n_sectors > bi_size);
*tio->len_ptr -= bi_size - n_sectors;
@@ -1252,7 +1252,7 @@ static void __split_and_process_bio(struct mapped_device *md,
start_io_acct(ci.io);
- if (bio->bi_rw & REQ_PREFLUSH) {
+ if (bio->bi_opf & REQ_PREFLUSH) {
ci.bio = &ci.md->flush_bio;
ci.sector_count = 0;
error = __send_empty_flush(&ci);
@@ -1290,7 +1290,7 @@ static blk_qc_t dm_make_request(struct request_queue *q, struct bio *bio)
if (unlikely(test_bit(DMF_BLOCK_IO_FOR_SUSPEND, &md->flags))) {
dm_put_live_table(md, srcu_idx);
- if (!(bio->bi_rw & REQ_RAHEAD))
+ if (!(bio->bi_opf & REQ_RAHEAD))
queue_io(md, bio);
else
bio_io_error(bio);
@@ -2082,7 +2082,8 @@ static void unlock_fs(struct mapped_device *md)
* Caller must hold md->suspend_lock
*/
static int __dm_suspend(struct mapped_device *md, struct dm_table *map,
- unsigned suspend_flags, int interruptible)
+ unsigned suspend_flags, int interruptible,
+ int dmf_suspended_flag)
{
bool do_lockfs = suspend_flags & DM_SUSPEND_LOCKFS_FLAG;
bool noflush = suspend_flags & DM_SUSPEND_NOFLUSH_FLAG;
@@ -2149,6 +2150,8 @@ static int __dm_suspend(struct mapped_device *md, struct dm_table *map,
* to finish.
*/
r = dm_wait_for_completion(md, interruptible);
+ if (!r)
+ set_bit(dmf_suspended_flag, &md->flags);
if (noflush)
clear_bit(DMF_NOFLUSH_SUSPENDING, &md->flags);
@@ -2210,12 +2213,10 @@ retry:
map = rcu_dereference_protected(md->map, lockdep_is_held(&md->suspend_lock));
- r = __dm_suspend(md, map, suspend_flags, TASK_INTERRUPTIBLE);
+ r = __dm_suspend(md, map, suspend_flags, TASK_INTERRUPTIBLE, DMF_SUSPENDED);
if (r)
goto out_unlock;
- set_bit(DMF_SUSPENDED, &md->flags);
-
dm_table_postsuspend_targets(map);
out_unlock:
@@ -2309,9 +2310,8 @@ static void __dm_internal_suspend(struct mapped_device *md, unsigned suspend_fla
* would require changing .presuspend to return an error -- avoid this
* until there is a need for more elaborate variants of internal suspend.
*/
- (void) __dm_suspend(md, map, suspend_flags, TASK_UNINTERRUPTIBLE);
-
- set_bit(DMF_SUSPENDED_INTERNALLY, &md->flags);
+ (void) __dm_suspend(md, map, suspend_flags, TASK_UNINTERRUPTIBLE,
+ DMF_SUSPENDED_INTERNALLY);
dm_table_postsuspend_targets(map);
}
diff --git a/drivers/md/linear.c b/drivers/md/linear.c
index 70ff888d25d0..86f5d435901d 100644
--- a/drivers/md/linear.c
+++ b/drivers/md/linear.c
@@ -221,7 +221,7 @@ static void linear_make_request(struct mddev *mddev, struct bio *bio)
struct bio *split;
sector_t start_sector, end_sector, data_offset;
- if (unlikely(bio->bi_rw & REQ_PREFLUSH)) {
+ if (unlikely(bio->bi_opf & REQ_PREFLUSH)) {
md_flush_request(mddev, bio);
return;
}
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 2c3ab6f5e6be..d646f6e444f0 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -285,7 +285,7 @@ static blk_qc_t md_make_request(struct request_queue *q, struct bio *bio)
*/
sectors = bio_sectors(bio);
/* bio could be mergeable after passing to underlayer */
- bio->bi_rw &= ~REQ_NOMERGE;
+ bio->bi_opf &= ~REQ_NOMERGE;
mddev->pers->make_request(mddev, bio);
cpu = part_stat_lock();
@@ -414,7 +414,7 @@ static void md_submit_flush_data(struct work_struct *ws)
/* an empty barrier - all done */
bio_endio(bio);
else {
- bio->bi_rw &= ~REQ_PREFLUSH;
+ bio->bi_opf &= ~REQ_PREFLUSH;
mddev->pers->make_request(mddev, bio);
}
diff --git a/drivers/md/multipath.c b/drivers/md/multipath.c
index 4974682842ae..673efbd6fc47 100644
--- a/drivers/md/multipath.c
+++ b/drivers/md/multipath.c
@@ -91,7 +91,7 @@ static void multipath_end_request(struct bio *bio)
if (!bio->bi_error)
multipath_end_bh_io(mp_bh, 0);
- else if (!(bio->bi_rw & REQ_RAHEAD)) {
+ else if (!(bio->bi_opf & REQ_RAHEAD)) {
/*
* oops, IO error:
*/
@@ -112,7 +112,7 @@ static void multipath_make_request(struct mddev *mddev, struct bio * bio)
struct multipath_bh * mp_bh;
struct multipath_info *multipath;
- if (unlikely(bio->bi_rw & REQ_PREFLUSH)) {
+ if (unlikely(bio->bi_opf & REQ_PREFLUSH)) {
md_flush_request(mddev, bio);
return;
}
@@ -135,7 +135,7 @@ static void multipath_make_request(struct mddev *mddev, struct bio * bio)
mp_bh->bio.bi_iter.bi_sector += multipath->rdev->data_offset;
mp_bh->bio.bi_bdev = multipath->rdev->bdev;
- mp_bh->bio.bi_rw |= REQ_FAILFAST_TRANSPORT;
+ mp_bh->bio.bi_opf |= REQ_FAILFAST_TRANSPORT;
mp_bh->bio.bi_end_io = multipath_end_request;
mp_bh->bio.bi_private = mp_bh;
generic_make_request(&mp_bh->bio);
@@ -360,7 +360,7 @@ static void multipathd(struct md_thread *thread)
bio->bi_iter.bi_sector +=
conf->multipaths[mp_bh->path].rdev->data_offset;
bio->bi_bdev = conf->multipaths[mp_bh->path].rdev->bdev;
- bio->bi_rw |= REQ_FAILFAST_TRANSPORT;
+ bio->bi_opf |= REQ_FAILFAST_TRANSPORT;
bio->bi_end_io = multipath_end_request;
bio->bi_private = mp_bh;
generic_make_request(bio);
diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c
index c3d439083212..258986a2699d 100644
--- a/drivers/md/raid0.c
+++ b/drivers/md/raid0.c
@@ -458,7 +458,7 @@ static void raid0_make_request(struct mddev *mddev, struct bio *bio)
struct md_rdev *tmp_dev;
struct bio *split;
- if (unlikely(bio->bi_rw & REQ_PREFLUSH)) {
+ if (unlikely(bio->bi_opf & REQ_PREFLUSH)) {
md_flush_request(mddev, bio);
return;
}
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index 46168ef2e279..21dc00eb1989 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -1043,8 +1043,8 @@ static void raid1_make_request(struct mddev *mddev, struct bio * bio)
unsigned long flags;
const int op = bio_op(bio);
const int rw = bio_data_dir(bio);
- const unsigned long do_sync = (bio->bi_rw & REQ_SYNC);
- const unsigned long do_flush_fua = (bio->bi_rw &
+ const unsigned long do_sync = (bio->bi_opf & REQ_SYNC);
+ const unsigned long do_flush_fua = (bio->bi_opf &
(REQ_PREFLUSH | REQ_FUA));
struct md_rdev *blocked_rdev;
struct blk_plug_cb *cb;
@@ -2318,7 +2318,7 @@ read_more:
raid_end_bio_io(r1_bio);
} else {
const unsigned long do_sync
- = r1_bio->master_bio->bi_rw & REQ_SYNC;
+ = r1_bio->master_bio->bi_opf & REQ_SYNC;
if (bio) {
r1_bio->bios[r1_bio->read_disk] =
mddev->ro ? IO_BLOCKED : NULL;
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index ed29fc899f06..0e4efcd10795 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -1054,8 +1054,8 @@ static void __make_request(struct mddev *mddev, struct bio *bio)
int i;
const int op = bio_op(bio);
const int rw = bio_data_dir(bio);
- const unsigned long do_sync = (bio->bi_rw & REQ_SYNC);
- const unsigned long do_fua = (bio->bi_rw & REQ_FUA);
+ const unsigned long do_sync = (bio->bi_opf & REQ_SYNC);
+ const unsigned long do_fua = (bio->bi_opf & REQ_FUA);
unsigned long flags;
struct md_rdev *blocked_rdev;
struct blk_plug_cb *cb;
@@ -1440,7 +1440,7 @@ static void raid10_make_request(struct mddev *mddev, struct bio *bio)
struct bio *split;
- if (unlikely(bio->bi_rw & REQ_PREFLUSH)) {
+ if (unlikely(bio->bi_opf & REQ_PREFLUSH)) {
md_flush_request(mddev, bio);
return;
}
@@ -2533,7 +2533,7 @@ read_more:
return;
}
- do_sync = (r10_bio->master_bio->bi_rw & REQ_SYNC);
+ do_sync = (r10_bio->master_bio->bi_opf & REQ_SYNC);
slot = r10_bio->read_slot;
printk_ratelimited(
KERN_ERR
diff --git a/drivers/md/raid5-cache.c b/drivers/md/raid5-cache.c
index 5504ce2bac06..51f76ddbe265 100644
--- a/drivers/md/raid5-cache.c
+++ b/drivers/md/raid5-cache.c
@@ -536,7 +536,7 @@ int r5l_handle_flush_request(struct r5l_log *log, struct bio *bio)
bio_endio(bio);
return 0;
}
- bio->bi_rw &= ~REQ_PREFLUSH;
+ bio->bi_opf &= ~REQ_PREFLUSH;
return -EAGAIN;
}
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index d189e894b921..8912407a4dd0 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -806,7 +806,7 @@ static void stripe_add_to_batch_list(struct r5conf *conf, struct stripe_head *sh
dd_idx = 0;
while (dd_idx == sh->pd_idx || dd_idx == sh->qd_idx)
dd_idx++;
- if (head->dev[dd_idx].towrite->bi_rw != sh->dev[dd_idx].towrite->bi_rw ||
+ if (head->dev[dd_idx].towrite->bi_opf != sh->dev[dd_idx].towrite->bi_opf ||
bio_op(head->dev[dd_idx].towrite) != bio_op(sh->dev[dd_idx].towrite))
goto unlock_out;
@@ -1003,7 +1003,7 @@ again:
pr_debug("%s: for %llu schedule op %d on disc %d\n",
__func__, (unsigned long long)sh->sector,
- bi->bi_rw, i);
+ bi->bi_opf, i);
atomic_inc(&sh->count);
if (sh != head_sh)
atomic_inc(&head_sh->count);
@@ -1014,7 +1014,7 @@ again:
bi->bi_iter.bi_sector = (sh->sector
+ rdev->data_offset);
if (test_bit(R5_ReadNoMerge, &head_sh->dev[i].flags))
- bi->bi_rw |= REQ_NOMERGE;
+ bi->bi_opf |= REQ_NOMERGE;
if (test_bit(R5_SkipCopy, &sh->dev[i].flags))
WARN_ON(test_bit(R5_UPTODATE, &sh->dev[i].flags));
@@ -1055,7 +1055,7 @@ again:
pr_debug("%s: for %llu schedule op %d on "
"replacement disc %d\n",
__func__, (unsigned long long)sh->sector,
- rbi->bi_rw, i);
+ rbi->bi_opf, i);
atomic_inc(&sh->count);
if (sh != head_sh)
atomic_inc(&head_sh->count);
@@ -1088,7 +1088,7 @@ again:
if (op_is_write(op))
set_bit(STRIPE_DEGRADED, &sh->state);
pr_debug("skip op %d on disc %d for sector %llu\n",
- bi->bi_rw, i, (unsigned long long)sh->sector);
+ bi->bi_opf, i, (unsigned long long)sh->sector);
clear_bit(R5_LOCKED, &sh->dev[i].flags);
set_bit(STRIPE_HANDLE, &sh->state);
}
@@ -1619,9 +1619,9 @@ again:
while (wbi && wbi->bi_iter.bi_sector <
dev->sector + STRIPE_SECTORS) {
- if (wbi->bi_rw & REQ_FUA)
+ if (wbi->bi_opf & REQ_FUA)
set_bit(R5_WantFUA, &dev->flags);
- if (wbi->bi_rw & REQ_SYNC)
+ if (wbi->bi_opf & REQ_SYNC)
set_bit(R5_SyncIO, &dev->flags);
if (bio_op(wbi) == REQ_OP_DISCARD)
set_bit(R5_Discard, &dev->flags);
@@ -5154,7 +5154,7 @@ static void raid5_make_request(struct mddev *mddev, struct bio * bi)
DEFINE_WAIT(w);
bool do_prepare;
- if (unlikely(bi->bi_rw & REQ_PREFLUSH)) {
+ if (unlikely(bi->bi_opf & REQ_PREFLUSH)) {
int ret = r5l_handle_flush_request(conf->log, bi);
if (ret == 0)
@@ -5237,7 +5237,7 @@ static void raid5_make_request(struct mddev *mddev, struct bio * bi)
(unsigned long long)logical_sector);
sh = raid5_get_active_stripe(conf, new_sector, previous,
- (bi->bi_rw & REQ_RAHEAD), 0);
+ (bi->bi_opf & REQ_RAHEAD), 0);
if (sh) {
if (unlikely(previous)) {
/* expansion might have moved on while waiting for a
@@ -5305,7 +5305,7 @@ static void raid5_make_request(struct mddev *mddev, struct bio * bi)
set_bit(STRIPE_HANDLE, &sh->state);
clear_bit(STRIPE_DELAYED, &sh->state);
if ((!sh->batch_head || sh == sh->batch_head) &&
- (bi->bi_rw & REQ_SYNC) &&
+ (bi->bi_opf & REQ_SYNC) &&
!test_and_set_bit(STRIPE_PREREAD_ACTIVE, &sh->state))
atomic_inc(&conf->preread_active_stripes);
release_stripe_plug(mddev, sh);
diff --git a/drivers/media/dvb-frontends/cxd2841er.c b/drivers/media/dvb-frontends/cxd2841er.c
index 09c39346167f..ffe88bc6b813 100644
--- a/drivers/media/dvb-frontends/cxd2841er.c
+++ b/drivers/media/dvb-frontends/cxd2841er.c
@@ -3378,20 +3378,28 @@ static int cxd2841er_tune_tc(struct dvb_frontend *fe,
ret = cxd2841er_get_carrier_offset_i(
priv, p->bandwidth_hz,
&carrier_offset);
+ if (ret)
+ return ret;
break;
case SYS_DVBT:
ret = cxd2841er_get_carrier_offset_t(
priv, p->bandwidth_hz,
&carrier_offset);
+ if (ret)
+ return ret;
break;
case SYS_DVBT2:
ret = cxd2841er_get_carrier_offset_t2(
priv, p->bandwidth_hz,
&carrier_offset);
+ if (ret)
+ return ret;
break;
case SYS_DVBC_ANNEX_A:
ret = cxd2841er_get_carrier_offset_c(
priv, &carrier_offset);
+ if (ret)
+ return ret;
break;
default:
dev_dbg(&priv->i2c->dev,
@@ -3399,8 +3407,6 @@ static int cxd2841er_tune_tc(struct dvb_frontend *fe,
__func__, priv->system);
return -EINVAL;
}
- if (ret)
- return ret;
dev_dbg(&priv->i2c->dev, "%s(): carrier offset %d\n",
__func__, carrier_offset);
p->frequency += carrier_offset;
diff --git a/drivers/media/i2c/adv7180.c b/drivers/media/i2c/adv7180.c
index b77b0a4dbf68..95cbc857f36e 100644
--- a/drivers/media/i2c/adv7180.c
+++ b/drivers/media/i2c/adv7180.c
@@ -100,7 +100,7 @@
#define ADV7180_REG_IDENT 0x0011
#define ADV7180_ID_7180 0x18
-#define ADV7180_REG_ICONF1 0x0040
+#define ADV7180_REG_ICONF1 0x2040
#define ADV7180_ICONF1_ACTIVE_LOW 0x01
#define ADV7180_ICONF1_PSYNC_ONLY 0x10
#define ADV7180_ICONF1_ACTIVE_TO_CLR 0xC0
@@ -113,15 +113,15 @@
#define ADV7180_IRQ1_LOCK 0x01
#define ADV7180_IRQ1_UNLOCK 0x02
-#define ADV7180_REG_ISR1 0x0042
-#define ADV7180_REG_ICR1 0x0043
-#define ADV7180_REG_IMR1 0x0044
-#define ADV7180_REG_IMR2 0x0048
+#define ADV7180_REG_ISR1 0x2042
+#define ADV7180_REG_ICR1 0x2043
+#define ADV7180_REG_IMR1 0x2044
+#define ADV7180_REG_IMR2 0x2048
#define ADV7180_IRQ3_AD_CHANGE 0x08
-#define ADV7180_REG_ISR3 0x004A
-#define ADV7180_REG_ICR3 0x004B
-#define ADV7180_REG_IMR3 0x004C
-#define ADV7180_REG_IMR4 0x50
+#define ADV7180_REG_ISR3 0x204A
+#define ADV7180_REG_ICR3 0x204B
+#define ADV7180_REG_IMR3 0x204C
+#define ADV7180_REG_IMR4 0x2050
#define ADV7180_REG_NTSC_V_BIT_END 0x00E6
#define ADV7180_NTSC_V_BIT_END_MANUAL_NVEND 0x4F
diff --git a/drivers/media/i2c/adv7511.c b/drivers/media/i2c/adv7511.c
index 6d7cad54a65d..53030d631653 100644
--- a/drivers/media/i2c/adv7511.c
+++ b/drivers/media/i2c/adv7511.c
@@ -1041,6 +1041,8 @@ static int adv7511_s_dv_timings(struct v4l2_subdev *sd,
struct v4l2_dv_timings *timings)
{
struct adv7511_state *state = get_adv7511_state(sd);
+ struct v4l2_bt_timings *bt = &timings->bt;
+ u32 fps;
v4l2_dbg(1, debug, sd, "%s:\n", __func__);
@@ -1052,15 +1054,29 @@ static int adv7511_s_dv_timings(struct v4l2_subdev *sd,
if the format is one of the CEA or DMT timings. */
v4l2_find_dv_timings_cap(timings, &adv7511_timings_cap, 0, NULL, NULL);
- timings->bt.flags &= ~V4L2_DV_FL_REDUCED_FPS;
-
/* save timings */
state->dv_timings = *timings;
/* set h/vsync polarities */
adv7511_wr_and_or(sd, 0x17, 0x9f,
- ((timings->bt.polarities & V4L2_DV_VSYNC_POS_POL) ? 0 : 0x40) |
- ((timings->bt.polarities & V4L2_DV_HSYNC_POS_POL) ? 0 : 0x20));
+ ((bt->polarities & V4L2_DV_VSYNC_POS_POL) ? 0 : 0x40) |
+ ((bt->polarities & V4L2_DV_HSYNC_POS_POL) ? 0 : 0x20));
+
+ fps = (u32)bt->pixelclock / (V4L2_DV_BT_FRAME_WIDTH(bt) * V4L2_DV_BT_FRAME_HEIGHT(bt));
+ switch (fps) {
+ case 24:
+ adv7511_wr_and_or(sd, 0xfb, 0xf9, 1 << 1);
+ break;
+ case 25:
+ adv7511_wr_and_or(sd, 0xfb, 0xf9, 2 << 1);
+ break;
+ case 30:
+ adv7511_wr_and_or(sd, 0xfb, 0xf9, 3 << 1);
+ break;
+ default:
+ adv7511_wr_and_or(sd, 0xfb, 0xf9, 0);
+ break;
+ }
/* update quantization range based on new dv_timings */
adv7511_set_rgb_quantization_mode(sd, state->rgb_quantization_range_ctrl);
diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_drv.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_drv.c
index e277b7c23516..c7806ecda2dd 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_drv.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_drv.c
@@ -246,7 +246,6 @@ static int mtk_vcodec_probe(struct platform_device *pdev)
struct video_device *vfd_enc;
struct resource *res;
int i, j, ret;
- DEFINE_DMA_ATTRS(attrs);
dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
if (!dev)
@@ -378,9 +377,6 @@ static int mtk_vcodec_probe(struct platform_device *pdev)
goto err_enc_reg;
}
- /* Avoid the iommu eat big hunks */
- dma_set_attr(DMA_ATTR_ALLOC_SINGLE_PAGES, &attrs);
-
mtk_v4l2_debug(0, "encoder registered as /dev/video%d",
vfd_enc->num);
diff --git a/drivers/media/platform/sti/bdisp/bdisp-hw.c b/drivers/media/platform/sti/bdisp/bdisp-hw.c
index 3df66d11c795..b7892f3efd98 100644
--- a/drivers/media/platform/sti/bdisp/bdisp-hw.c
+++ b/drivers/media/platform/sti/bdisp/bdisp-hw.c
@@ -430,14 +430,11 @@ int bdisp_hw_get_and_clear_irq(struct bdisp_dev *bdisp)
*/
void bdisp_hw_free_nodes(struct bdisp_ctx *ctx)
{
- if (ctx && ctx->node[0]) {
- DEFINE_DMA_ATTRS(attrs);
-
- dma_set_attr(DMA_ATTR_WRITE_COMBINE, &attrs);
+ if (ctx && ctx->node[0])
dma_free_attrs(ctx->bdisp_dev->dev,
sizeof(struct bdisp_node) * MAX_NB_NODE,
- ctx->node[0], ctx->node_paddr[0], &attrs);
- }
+ ctx->node[0], ctx->node_paddr[0],
+ DMA_ATTR_WRITE_COMBINE);
}
/**
@@ -455,12 +452,10 @@ int bdisp_hw_alloc_nodes(struct bdisp_ctx *ctx)
unsigned int i, node_size = sizeof(struct bdisp_node);
void *base;
dma_addr_t paddr;
- DEFINE_DMA_ATTRS(attrs);
/* Allocate all the nodes within a single memory page */
- dma_set_attr(DMA_ATTR_WRITE_COMBINE, &attrs);
base = dma_alloc_attrs(dev, node_size * MAX_NB_NODE, &paddr,
- GFP_KERNEL | GFP_DMA, &attrs);
+ GFP_KERNEL | GFP_DMA, DMA_ATTR_WRITE_COMBINE);
if (!base) {
dev_err(dev, "%s no mem\n", __func__);
return -ENOMEM;
@@ -493,13 +488,9 @@ void bdisp_hw_free_filters(struct device *dev)
{
int size = (BDISP_HF_NB * NB_H_FILTER) + (BDISP_VF_NB * NB_V_FILTER);
- if (bdisp_h_filter[0].virt) {
- DEFINE_DMA_ATTRS(attrs);
-
- dma_set_attr(DMA_ATTR_WRITE_COMBINE, &attrs);
+ if (bdisp_h_filter[0].virt)
dma_free_attrs(dev, size, bdisp_h_filter[0].virt,
- bdisp_h_filter[0].paddr, &attrs);
- }
+ bdisp_h_filter[0].paddr, DMA_ATTR_WRITE_COMBINE);
}
/**
@@ -516,12 +507,11 @@ int bdisp_hw_alloc_filters(struct device *dev)
unsigned int i, size;
void *base;
dma_addr_t paddr;
- DEFINE_DMA_ATTRS(attrs);
/* Allocate all the filters within a single memory page */
size = (BDISP_HF_NB * NB_H_FILTER) + (BDISP_VF_NB * NB_V_FILTER);
- dma_set_attr(DMA_ATTR_WRITE_COMBINE, &attrs);
- base = dma_alloc_attrs(dev, size, &paddr, GFP_KERNEL | GFP_DMA, &attrs);
+ base = dma_alloc_attrs(dev, size, &paddr, GFP_KERNEL | GFP_DMA,
+ DMA_ATTR_WRITE_COMBINE);
if (!base)
return -ENOMEM;
diff --git a/drivers/media/platform/vim2m.c b/drivers/media/platform/vim2m.c
index 6b17015048ae..cd0ff4a66fdc 100644
--- a/drivers/media/platform/vim2m.c
+++ b/drivers/media/platform/vim2m.c
@@ -171,6 +171,9 @@ struct vim2m_ctx {
int mode;
enum v4l2_colorspace colorspace;
+ enum v4l2_ycbcr_encoding ycbcr_enc;
+ enum v4l2_xfer_func xfer_func;
+ enum v4l2_quantization quant;
/* Source and destination queue data */
struct vim2m_q_data q_data[2];
@@ -493,6 +496,9 @@ static int vidioc_g_fmt(struct vim2m_ctx *ctx, struct v4l2_format *f)
f->fmt.pix.bytesperline = (q_data->width * q_data->fmt->depth) >> 3;
f->fmt.pix.sizeimage = q_data->sizeimage;
f->fmt.pix.colorspace = ctx->colorspace;
+ f->fmt.pix.xfer_func = ctx->xfer_func;
+ f->fmt.pix.ycbcr_enc = ctx->ycbcr_enc;
+ f->fmt.pix.quantization = ctx->quant;
return 0;
}
@@ -549,6 +555,9 @@ static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
return -EINVAL;
}
f->fmt.pix.colorspace = ctx->colorspace;
+ f->fmt.pix.xfer_func = ctx->xfer_func;
+ f->fmt.pix.ycbcr_enc = ctx->ycbcr_enc;
+ f->fmt.pix.quantization = ctx->quant;
return vidioc_try_fmt(f, fmt);
}
@@ -630,8 +639,12 @@ static int vidioc_s_fmt_vid_out(struct file *file, void *priv,
return ret;
ret = vidioc_s_fmt(file2ctx(file), f);
- if (!ret)
+ if (!ret) {
ctx->colorspace = f->fmt.pix.colorspace;
+ ctx->xfer_func = f->fmt.pix.xfer_func;
+ ctx->ycbcr_enc = f->fmt.pix.ycbcr_enc;
+ ctx->quant = f->fmt.pix.quantization;
+ }
return ret;
}
diff --git a/drivers/media/platform/vivid/vivid-cec.c b/drivers/media/platform/vivid/vivid-cec.c
index 66aa7292076b..f9f878b8e0a7 100644
--- a/drivers/media/platform/vivid/vivid-cec.c
+++ b/drivers/media/platform/vivid/vivid-cec.c
@@ -169,7 +169,6 @@ static int vivid_received(struct cec_adapter *adap, struct cec_msg *msg)
struct vivid_dev *dev = adap->priv;
struct cec_msg reply;
u8 dest = cec_msg_destination(msg);
- u16 pa;
u8 disp_ctl;
char osd[14];
@@ -178,15 +177,6 @@ static int vivid_received(struct cec_adapter *adap, struct cec_msg *msg)
cec_msg_init(&reply, dest, cec_msg_initiator(msg));
switch (cec_msg_opcode(msg)) {
- case CEC_MSG_SET_STREAM_PATH:
- if (cec_is_sink(adap))
- return -ENOMSG;
- cec_ops_set_stream_path(msg, &pa);
- if (pa != adap->phys_addr)
- return -ENOMSG;
- cec_msg_active_source(&reply, adap->phys_addr);
- cec_transmit_msg(adap, &reply, false);
- break;
case CEC_MSG_SET_OSD_STRING:
if (!cec_is_sink(adap))
return -ENOMSG;
diff --git a/drivers/media/v4l2-core/videobuf2-dma-contig.c b/drivers/media/v4l2-core/videobuf2-dma-contig.c
index 863f658a3fa1..59fa204b15f3 100644
--- a/drivers/media/v4l2-core/videobuf2-dma-contig.c
+++ b/drivers/media/v4l2-core/videobuf2-dma-contig.c
@@ -27,7 +27,7 @@ struct vb2_dc_buf {
unsigned long size;
void *cookie;
dma_addr_t dma_addr;
- struct dma_attrs attrs;
+ unsigned long attrs;
enum dma_data_direction dma_dir;
struct sg_table *dma_sgt;
struct frame_vector *vec;
@@ -130,12 +130,12 @@ static void vb2_dc_put(void *buf_priv)
kfree(buf->sgt_base);
}
dma_free_attrs(buf->dev, buf->size, buf->cookie, buf->dma_addr,
- &buf->attrs);
+ buf->attrs);
put_device(buf->dev);
kfree(buf);
}
-static void *vb2_dc_alloc(struct device *dev, const struct dma_attrs *attrs,
+static void *vb2_dc_alloc(struct device *dev, unsigned long attrs,
unsigned long size, enum dma_data_direction dma_dir,
gfp_t gfp_flags)
{
@@ -146,16 +146,16 @@ static void *vb2_dc_alloc(struct device *dev, const struct dma_attrs *attrs,
return ERR_PTR(-ENOMEM);
if (attrs)
- buf->attrs = *attrs;
+ buf->attrs = attrs;
buf->cookie = dma_alloc_attrs(dev, size, &buf->dma_addr,
- GFP_KERNEL | gfp_flags, &buf->attrs);
+ GFP_KERNEL | gfp_flags, buf->attrs);
if (!buf->cookie) {
dev_err(dev, "dma_alloc_coherent of size %ld failed\n", size);
kfree(buf);
return ERR_PTR(-ENOMEM);
}
- if (!dma_get_attr(DMA_ATTR_NO_KERNEL_MAPPING, &buf->attrs))
+ if ((buf->attrs & DMA_ATTR_NO_KERNEL_MAPPING) == 0)
buf->vaddr = buf->cookie;
/* Prevent the device from being released while the buffer is used */
@@ -189,7 +189,7 @@ static int vb2_dc_mmap(void *buf_priv, struct vm_area_struct *vma)
vma->vm_pgoff = 0;
ret = dma_mmap_attrs(buf->dev, vma, buf->cookie,
- buf->dma_addr, buf->size, &buf->attrs);
+ buf->dma_addr, buf->size, buf->attrs);
if (ret) {
pr_err("Remapping memory failed, error: %d\n", ret);
@@ -372,7 +372,7 @@ static struct sg_table *vb2_dc_get_base_sgt(struct vb2_dc_buf *buf)
}
ret = dma_get_sgtable_attrs(buf->dev, sgt, buf->cookie, buf->dma_addr,
- buf->size, &buf->attrs);
+ buf->size, buf->attrs);
if (ret < 0) {
dev_err(buf->dev, "failed to get scatterlist from DMA API\n");
kfree(sgt);
@@ -421,15 +421,12 @@ static void vb2_dc_put_userptr(void *buf_priv)
struct page **pages;
if (sgt) {
- DEFINE_DMA_ATTRS(attrs);
-
- dma_set_attr(DMA_ATTR_SKIP_CPU_SYNC, &attrs);
/*
* No need to sync to CPU, it's already synced to the CPU
* since the finish() memop will have been called before this.
*/
dma_unmap_sg_attrs(buf->dev, sgt->sgl, sgt->orig_nents,
- buf->dma_dir, &attrs);
+ buf->dma_dir, DMA_ATTR_SKIP_CPU_SYNC);
pages = frame_vector_pages(buf->vec);
/* sgt should exist only if vector contains pages... */
BUG_ON(IS_ERR(pages));
@@ -484,9 +481,6 @@ static void *vb2_dc_get_userptr(struct device *dev, unsigned long vaddr,
struct sg_table *sgt;
unsigned long contig_size;
unsigned long dma_align = dma_get_cache_alignment();
- DEFINE_DMA_ATTRS(attrs);
-
- dma_set_attr(DMA_ATTR_SKIP_CPU_SYNC, &attrs);
/* Only cache aligned DMA transfers are reliable */
if (!IS_ALIGNED(vaddr | size, dma_align)) {
@@ -548,7 +542,7 @@ static void *vb2_dc_get_userptr(struct device *dev, unsigned long vaddr,
* prepare() memop is called.
*/
sgt->nents = dma_map_sg_attrs(buf->dev, sgt->sgl, sgt->orig_nents,
- buf->dma_dir, &attrs);
+ buf->dma_dir, DMA_ATTR_SKIP_CPU_SYNC);
if (sgt->nents <= 0) {
pr_err("failed to map scatterlist\n");
ret = -EIO;
@@ -572,7 +566,7 @@ out:
fail_map_sg:
dma_unmap_sg_attrs(buf->dev, sgt->sgl, sgt->orig_nents,
- buf->dma_dir, &attrs);
+ buf->dma_dir, DMA_ATTR_SKIP_CPU_SYNC);
fail_sgt_init:
sg_free_table(sgt);
@@ -749,7 +743,7 @@ EXPORT_SYMBOL_GPL(vb2_dma_contig_memops);
int vb2_dma_contig_set_max_seg_size(struct device *dev, unsigned int size)
{
if (!dev->dma_parms) {
- dev->dma_parms = kzalloc(sizeof(dev->dma_parms), GFP_KERNEL);
+ dev->dma_parms = kzalloc(sizeof(*dev->dma_parms), GFP_KERNEL);
if (!dev->dma_parms)
return -ENOMEM;
}
diff --git a/drivers/media/v4l2-core/videobuf2-dma-sg.c b/drivers/media/v4l2-core/videobuf2-dma-sg.c
index a39db8a6db7a..bd82d709ee82 100644
--- a/drivers/media/v4l2-core/videobuf2-dma-sg.c
+++ b/drivers/media/v4l2-core/videobuf2-dma-sg.c
@@ -95,7 +95,7 @@ static int vb2_dma_sg_alloc_compacted(struct vb2_dma_sg_buf *buf,
return 0;
}
-static void *vb2_dma_sg_alloc(struct device *dev, const struct dma_attrs *dma_attrs,
+static void *vb2_dma_sg_alloc(struct device *dev, unsigned long dma_attrs,
unsigned long size, enum dma_data_direction dma_dir,
gfp_t gfp_flags)
{
@@ -103,9 +103,6 @@ static void *vb2_dma_sg_alloc(struct device *dev, const struct dma_attrs *dma_at
struct sg_table *sgt;
int ret;
int num_pages;
- DEFINE_DMA_ATTRS(attrs);
-
- dma_set_attr(DMA_ATTR_SKIP_CPU_SYNC, &attrs);
if (WARN_ON(dev == NULL))
return NULL;
@@ -144,7 +141,7 @@ static void *vb2_dma_sg_alloc(struct device *dev, const struct dma_attrs *dma_at
* prepare() memop is called.
*/
sgt->nents = dma_map_sg_attrs(buf->dev, sgt->sgl, sgt->orig_nents,
- buf->dma_dir, &attrs);
+ buf->dma_dir, DMA_ATTR_SKIP_CPU_SYNC);
if (!sgt->nents)
goto fail_map;
@@ -179,13 +176,10 @@ static void vb2_dma_sg_put(void *buf_priv)
int i = buf->num_pages;
if (atomic_dec_and_test(&buf->refcount)) {
- DEFINE_DMA_ATTRS(attrs);
-
- dma_set_attr(DMA_ATTR_SKIP_CPU_SYNC, &attrs);
dprintk(1, "%s: Freeing buffer of %d pages\n", __func__,
buf->num_pages);
dma_unmap_sg_attrs(buf->dev, sgt->sgl, sgt->orig_nents,
- buf->dma_dir, &attrs);
+ buf->dma_dir, DMA_ATTR_SKIP_CPU_SYNC);
if (buf->vaddr)
vm_unmap_ram(buf->vaddr, buf->num_pages);
sg_free_table(buf->dma_sgt);
@@ -228,10 +222,8 @@ static void *vb2_dma_sg_get_userptr(struct device *dev, unsigned long vaddr,
{
struct vb2_dma_sg_buf *buf;
struct sg_table *sgt;
- DEFINE_DMA_ATTRS(attrs);
struct frame_vector *vec;
- dma_set_attr(DMA_ATTR_SKIP_CPU_SYNC, &attrs);
buf = kzalloc(sizeof *buf, GFP_KERNEL);
if (!buf)
return NULL;
@@ -262,7 +254,7 @@ static void *vb2_dma_sg_get_userptr(struct device *dev, unsigned long vaddr,
* prepare() memop is called.
*/
sgt->nents = dma_map_sg_attrs(buf->dev, sgt->sgl, sgt->orig_nents,
- buf->dma_dir, &attrs);
+ buf->dma_dir, DMA_ATTR_SKIP_CPU_SYNC);
if (!sgt->nents)
goto userptr_fail_map;
@@ -286,14 +278,11 @@ static void vb2_dma_sg_put_userptr(void *buf_priv)
struct vb2_dma_sg_buf *buf = buf_priv;
struct sg_table *sgt = &buf->sg_table;
int i = buf->num_pages;
- DEFINE_DMA_ATTRS(attrs);
-
- dma_set_attr(DMA_ATTR_SKIP_CPU_SYNC, &attrs);
dprintk(1, "%s: Releasing userspace buffer of %d pages\n",
__func__, buf->num_pages);
dma_unmap_sg_attrs(buf->dev, sgt->sgl, sgt->orig_nents, buf->dma_dir,
- &attrs);
+ DMA_ATTR_SKIP_CPU_SYNC);
if (buf->vaddr)
vm_unmap_ram(buf->vaddr, buf->num_pages);
sg_free_table(buf->dma_sgt);
diff --git a/drivers/media/v4l2-core/videobuf2-vmalloc.c b/drivers/media/v4l2-core/videobuf2-vmalloc.c
index 7e8a07ed8d82..c2820a6e164d 100644
--- a/drivers/media/v4l2-core/videobuf2-vmalloc.c
+++ b/drivers/media/v4l2-core/videobuf2-vmalloc.c
@@ -33,7 +33,7 @@ struct vb2_vmalloc_buf {
static void vb2_vmalloc_put(void *buf_priv);
-static void *vb2_vmalloc_alloc(struct device *dev, const struct dma_attrs *attrs,
+static void *vb2_vmalloc_alloc(struct device *dev, unsigned long attrs,
unsigned long size, enum dma_data_direction dma_dir,
gfp_t gfp_flags)
{
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index 4387ccb79e64..7410c6d9a34d 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -69,5 +69,6 @@ OBJCOPYFLAGS :=
OBJCOPYFLAGS_lkdtm_rodata_objcopy.o := \
--set-section-flags .text=alloc,readonly \
--rename-section .text=.rodata
-$(obj)/lkdtm_rodata_objcopy.o: $(obj)/lkdtm_rodata.o
+targets += lkdtm_rodata.o lkdtm_rodata_objcopy.o
+$(obj)/lkdtm_rodata_objcopy.o: $(obj)/lkdtm_rodata.o FORCE
$(call if_changed,objcopy)
diff --git a/drivers/misc/cxl/context.c b/drivers/misc/cxl/context.c
index bdee9a01ef35..c466ee2b0c97 100644
--- a/drivers/misc/cxl/context.c
+++ b/drivers/misc/cxl/context.c
@@ -90,8 +90,7 @@ int cxl_context_init(struct cxl_context *ctx, struct cxl_afu *afu, bool master,
*/
mutex_lock(&afu->contexts_lock);
idr_preload(GFP_KERNEL);
- i = idr_alloc(&ctx->afu->contexts_idr, ctx,
- ctx->afu->adapter->native->sl_ops->min_pe,
+ i = idr_alloc(&ctx->afu->contexts_idr, ctx, ctx->afu->adapter->min_pe,
ctx->afu->num_procs, GFP_NOWAIT);
idr_preload_end();
mutex_unlock(&afu->contexts_lock);
diff --git a/drivers/misc/cxl/cxl.h b/drivers/misc/cxl/cxl.h
index de090533f18c..344a0ff8f8c7 100644
--- a/drivers/misc/cxl/cxl.h
+++ b/drivers/misc/cxl/cxl.h
@@ -561,7 +561,6 @@ struct cxl_service_layer_ops {
u64 (*timebase_read)(struct cxl *adapter);
int capi_mode;
bool needs_reset_before_disable;
- int min_pe;
};
struct cxl_native {
@@ -603,6 +602,7 @@ struct cxl {
struct bin_attribute cxl_attr;
int adapter_num;
int user_irqs;
+ int min_pe;
u64 ps_size;
u16 psl_rev;
u16 base_image;
diff --git a/drivers/misc/cxl/native.c b/drivers/misc/cxl/native.c
index 3bcdaee11ba1..e606fdc4bc9c 100644
--- a/drivers/misc/cxl/native.c
+++ b/drivers/misc/cxl/native.c
@@ -924,7 +924,7 @@ static irqreturn_t native_irq_multiplexed(int irq, void *data)
return fail_psl_irq(afu, &irq_info);
}
-void native_irq_wait(struct cxl_context *ctx)
+static void native_irq_wait(struct cxl_context *ctx)
{
u64 dsisr;
int timeout = 1000;
diff --git a/drivers/misc/cxl/pci.c b/drivers/misc/cxl/pci.c
index d152e2de8c93..6f0c4ac4b649 100644
--- a/drivers/misc/cxl/pci.c
+++ b/drivers/misc/cxl/pci.c
@@ -379,7 +379,7 @@ static int calc_capp_routing(struct pci_dev *dev, u64 *chipid, u64 *capp_unit_id
static int init_implementation_adapter_psl_regs(struct cxl *adapter, struct pci_dev *dev)
{
- u64 psl_dsnctl;
+ u64 psl_dsnctl, psl_fircntl;
u64 chipid;
u64 capp_unit_id;
int rc;
@@ -398,8 +398,11 @@ static int init_implementation_adapter_psl_regs(struct cxl *adapter, struct pci_
cxl_p1_write(adapter, CXL_PSL_RESLCKTO, 0x20000000200ULL);
/* snoop write mask */
cxl_p1_write(adapter, CXL_PSL_SNWRALLOC, 0x00000000FFFFFFFFULL);
- /* set fir_accum */
- cxl_p1_write(adapter, CXL_PSL_FIR_CNTL, 0x0800000000000000ULL);
+ /* set fir_cntl to recommended value for production env */
+ psl_fircntl = (0x2ULL << (63-3)); /* ce_report */
+ psl_fircntl |= (0x1ULL << (63-6)); /* FIR_report */
+ psl_fircntl |= 0x1ULL; /* ce_thresh */
+ cxl_p1_write(adapter, CXL_PSL_FIR_CNTL, psl_fircntl);
/* for debugging with trace arrays */
cxl_p1_write(adapter, CXL_PSL_TRACE, 0x0000FF7C00000000ULL);
@@ -1521,14 +1524,15 @@ static const struct cxl_service_layer_ops xsl_ops = {
.write_timebase_ctrl = write_timebase_ctrl_xsl,
.timebase_read = timebase_read_xsl,
.capi_mode = OPAL_PHB_CAPI_MODE_DMA,
- .min_pe = 1, /* Workaround for Mellanox CX4 HW bug */
};
static void set_sl_ops(struct cxl *adapter, struct pci_dev *dev)
{
if (dev->vendor == PCI_VENDOR_ID_MELLANOX && dev->device == 0x1013) {
+ /* Mellanox CX-4 */
dev_info(&adapter->dev, "Device uses an XSL\n");
adapter->native->sl_ops = &xsl_ops;
+ adapter->min_pe = 1; /* Workaround for CX-4 hardware bug */
} else {
dev_info(&adapter->dev, "Device uses a PSL\n");
adapter->native->sl_ops = &psl_ops;
diff --git a/drivers/misc/cxl/vphb.c b/drivers/misc/cxl/vphb.c
index dee8def1c193..7ada5f1b7bb6 100644
--- a/drivers/misc/cxl/vphb.c
+++ b/drivers/misc/cxl/vphb.c
@@ -221,7 +221,7 @@ int cxl_pci_vphb_add(struct cxl_afu *afu)
/* Setup the PHB using arch provided callback */
phb->ops = &cxl_pcie_pci_ops;
phb->cfg_addr = NULL;
- phb->cfg_data = 0;
+ phb->cfg_data = NULL;
phb->private_data = afu;
phb->controller_ops = cxl_pci_controller_ops;
diff --git a/drivers/misc/lkdtm_usercopy.c b/drivers/misc/lkdtm_usercopy.c
index 5a3fd76eec27..5525a204db93 100644
--- a/drivers/misc/lkdtm_usercopy.c
+++ b/drivers/misc/lkdtm_usercopy.c
@@ -49,7 +49,7 @@ static noinline void do_usercopy_stack(bool to_user, bool bad_frame)
/* This is a pointer to outside our current stack frame. */
if (bad_frame) {
- bad_stack = do_usercopy_stack_callee((uintptr_t)bad_stack);
+ bad_stack = do_usercopy_stack_callee((uintptr_t)&bad_stack);
} else {
/* Put start address just inside stack. */
bad_stack = task_stack_page(current) + THREAD_SIZE;
diff --git a/drivers/misc/mic/Kconfig b/drivers/misc/mic/Kconfig
index 89e5917e1c33..6fd9d367dea7 100644
--- a/drivers/misc/mic/Kconfig
+++ b/drivers/misc/mic/Kconfig
@@ -146,3 +146,7 @@ config VOP
More information about the Intel MIC family as well as the Linux
OS and tools for MIC to use with this driver are available from
<http://software.intel.com/en-us/mic-developer>.
+
+if VOP
+source "drivers/vhost/Kconfig.vringh"
+endif
diff --git a/drivers/misc/mic/host/mic_boot.c b/drivers/misc/mic/host/mic_boot.c
index e047efd83f57..9599d732aff3 100644
--- a/drivers/misc/mic/host/mic_boot.c
+++ b/drivers/misc/mic/host/mic_boot.c
@@ -38,7 +38,7 @@ static inline struct mic_device *vpdev_to_mdev(struct device *dev)
static dma_addr_t
_mic_dma_map_page(struct device *dev, struct page *page,
unsigned long offset, size_t size,
- enum dma_data_direction dir, struct dma_attrs *attrs)
+ enum dma_data_direction dir, unsigned long attrs)
{
void *va = phys_to_virt(page_to_phys(page)) + offset;
struct mic_device *mdev = vpdev_to_mdev(dev);
@@ -48,7 +48,7 @@ _mic_dma_map_page(struct device *dev, struct page *page,
static void _mic_dma_unmap_page(struct device *dev, dma_addr_t dma_addr,
size_t size, enum dma_data_direction dir,
- struct dma_attrs *attrs)
+ unsigned long attrs)
{
struct mic_device *mdev = vpdev_to_mdev(dev);
@@ -144,7 +144,7 @@ static inline struct mic_device *scdev_to_mdev(struct scif_hw_dev *scdev)
static void *__mic_dma_alloc(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t gfp,
- struct dma_attrs *attrs)
+ unsigned long attrs)
{
struct scif_hw_dev *scdev = dev_get_drvdata(dev);
struct mic_device *mdev = scdev_to_mdev(scdev);
@@ -164,7 +164,7 @@ static void *__mic_dma_alloc(struct device *dev, size_t size,
}
static void __mic_dma_free(struct device *dev, size_t size, void *vaddr,
- dma_addr_t dma_handle, struct dma_attrs *attrs)
+ dma_addr_t dma_handle, unsigned long attrs)
{
struct scif_hw_dev *scdev = dev_get_drvdata(dev);
struct mic_device *mdev = scdev_to_mdev(scdev);
@@ -176,7 +176,7 @@ static void __mic_dma_free(struct device *dev, size_t size, void *vaddr,
static dma_addr_t
__mic_dma_map_page(struct device *dev, struct page *page, unsigned long offset,
size_t size, enum dma_data_direction dir,
- struct dma_attrs *attrs)
+ unsigned long attrs)
{
void *va = phys_to_virt(page_to_phys(page)) + offset;
struct scif_hw_dev *scdev = dev_get_drvdata(dev);
@@ -188,7 +188,7 @@ __mic_dma_map_page(struct device *dev, struct page *page, unsigned long offset,
static void
__mic_dma_unmap_page(struct device *dev, dma_addr_t dma_addr,
size_t size, enum dma_data_direction dir,
- struct dma_attrs *attrs)
+ unsigned long attrs)
{
struct scif_hw_dev *scdev = dev_get_drvdata(dev);
struct mic_device *mdev = scdev_to_mdev(scdev);
@@ -198,7 +198,7 @@ __mic_dma_unmap_page(struct device *dev, dma_addr_t dma_addr,
static int __mic_dma_map_sg(struct device *dev, struct scatterlist *sg,
int nents, enum dma_data_direction dir,
- struct dma_attrs *attrs)
+ unsigned long attrs)
{
struct scif_hw_dev *scdev = dev_get_drvdata(dev);
struct mic_device *mdev = scdev_to_mdev(scdev);
@@ -229,7 +229,7 @@ err:
static void __mic_dma_unmap_sg(struct device *dev,
struct scatterlist *sg, int nents,
enum dma_data_direction dir,
- struct dma_attrs *attrs)
+ unsigned long attrs)
{
struct scif_hw_dev *scdev = dev_get_drvdata(dev);
struct mic_device *mdev = scdev_to_mdev(scdev);
@@ -327,7 +327,7 @@ static inline struct mic_device *mbdev_to_mdev(struct mbus_device *mbdev)
static dma_addr_t
mic_dma_map_page(struct device *dev, struct page *page,
unsigned long offset, size_t size, enum dma_data_direction dir,
- struct dma_attrs *attrs)
+ unsigned long attrs)
{
void *va = phys_to_virt(page_to_phys(page)) + offset;
struct mic_device *mdev = dev_get_drvdata(dev->parent);
@@ -338,7 +338,7 @@ mic_dma_map_page(struct device *dev, struct page *page,
static void
mic_dma_unmap_page(struct device *dev, dma_addr_t dma_addr,
size_t size, enum dma_data_direction dir,
- struct dma_attrs *attrs)
+ unsigned long attrs)
{
struct mic_device *mdev = dev_get_drvdata(dev->parent);
mic_unmap_single(mdev, dma_addr, size);
diff --git a/drivers/mtd/bcm47xxpart.c b/drivers/mtd/bcm47xxpart.c
index 845dd27d9f41..377947580203 100644
--- a/drivers/mtd/bcm47xxpart.c
+++ b/drivers/mtd/bcm47xxpart.c
@@ -122,7 +122,7 @@ static int bcm47xxpart_parse(struct mtd_info *master,
for (offset = 0; offset <= master->size - blocksize;
offset += blocksize) {
/* Nothing more in higher memory on BCM47XX (MIPS) */
- if (config_enabled(CONFIG_BCM47XX) && offset >= 0x2000000)
+ if (IS_ENABLED(CONFIG_BCM47XX) && offset >= 0x2000000)
break;
if (curr_part >= BCM47XXPART_MAX_PARTS) {
diff --git a/drivers/mtd/ubi/attach.c b/drivers/mtd/ubi/attach.c
index c1aaf0336cf2..903becd31410 100644
--- a/drivers/mtd/ubi/attach.c
+++ b/drivers/mtd/ubi/attach.c
@@ -175,6 +175,40 @@ static int add_corrupted(struct ubi_attach_info *ai, int pnum, int ec)
}
/**
+ * add_fastmap - add a Fastmap related physical eraseblock.
+ * @ai: attaching information
+ * @pnum: physical eraseblock number the VID header came from
+ * @vid_hdr: the volume identifier header
+ * @ec: erase counter of the physical eraseblock
+ *
+ * This function allocates a 'struct ubi_ainf_peb' object for a Fastamp
+ * physical eraseblock @pnum and adds it to the 'fastmap' list.
+ * Such blocks can be Fastmap super and data blocks from both the most
+ * recent Fastmap we're attaching from or from old Fastmaps which will
+ * be erased.
+ */
+static int add_fastmap(struct ubi_attach_info *ai, int pnum,
+ struct ubi_vid_hdr *vid_hdr, int ec)
+{
+ struct ubi_ainf_peb *aeb;
+
+ aeb = kmem_cache_alloc(ai->aeb_slab_cache, GFP_KERNEL);
+ if (!aeb)
+ return -ENOMEM;
+
+ aeb->pnum = pnum;
+ aeb->vol_id = be32_to_cpu(vidh->vol_id);
+ aeb->sqnum = be64_to_cpu(vidh->sqnum);
+ aeb->ec = ec;
+ list_add(&aeb->u.list, &ai->fastmap);
+
+ dbg_bld("add to fastmap list: PEB %d, vol_id %d, sqnum: %llu", pnum,
+ aeb->vol_id, aeb->sqnum);
+
+ return 0;
+}
+
+/**
* validate_vid_hdr - check volume identifier header.
* @ubi: UBI device description object
* @vid_hdr: the volume identifier header to check
@@ -803,13 +837,26 @@ out_unlock:
return err;
}
+static bool vol_ignored(int vol_id)
+{
+ switch (vol_id) {
+ case UBI_LAYOUT_VOLUME_ID:
+ return true;
+ }
+
+#ifdef CONFIG_MTD_UBI_FASTMAP
+ return ubi_is_fm_vol(vol_id);
+#else
+ return false;
+#endif
+}
+
/**
* scan_peb - scan and process UBI headers of a PEB.
* @ubi: UBI device description object
* @ai: attaching information
* @pnum: the physical eraseblock number
- * @vid: The volume ID of the found volume will be stored in this pointer
- * @sqnum: The sqnum of the found volume will be stored in this pointer
+ * @fast: true if we're scanning for a Fastmap
*
* This function reads UBI headers of PEB @pnum, checks them, and adds
* information about this PEB to the corresponding list or RB-tree in the
@@ -817,9 +864,9 @@ out_unlock:
* successfully handled and a negative error code in case of failure.
*/
static int scan_peb(struct ubi_device *ubi, struct ubi_attach_info *ai,
- int pnum, int *vid, unsigned long long *sqnum)
+ int pnum, bool fast)
{
- long long uninitialized_var(ec);
+ long long ec;
int err, bitflips = 0, vol_id = -1, ec_err = 0;
dbg_bld("scan PEB %d", pnum);
@@ -935,6 +982,20 @@ static int scan_peb(struct ubi_device *ubi, struct ubi_attach_info *ai,
*/
ai->maybe_bad_peb_count += 1;
case UBI_IO_BAD_HDR:
+ /*
+ * If we're facing a bad VID header we have to drop *all*
+ * Fastmap data structures we find. The most recent Fastmap
+ * could be bad and therefore there is a chance that we attach
+ * from an old one. On a fine MTD stack a PEB must not render
+ * bad all of a sudden, but the reality is different.
+ * So, let's be paranoid and help finding the root cause by
+ * falling back to scanning mode instead of attaching with a
+ * bad EBA table and cause data corruption which is hard to
+ * analyze.
+ */
+ if (fast)
+ ai->force_full_scan = 1;
+
if (ec_err)
/*
* Both headers are corrupted. There is a possibility
@@ -991,21 +1052,15 @@ static int scan_peb(struct ubi_device *ubi, struct ubi_attach_info *ai,
}
vol_id = be32_to_cpu(vidh->vol_id);
- if (vid)
- *vid = vol_id;
- if (sqnum)
- *sqnum = be64_to_cpu(vidh->sqnum);
- if (vol_id > UBI_MAX_VOLUMES && vol_id != UBI_LAYOUT_VOLUME_ID) {
+ if (vol_id > UBI_MAX_VOLUMES && !vol_ignored(vol_id)) {
int lnum = be32_to_cpu(vidh->lnum);
/* Unsupported internal volume */
switch (vidh->compat) {
case UBI_COMPAT_DELETE:
- if (vol_id != UBI_FM_SB_VOLUME_ID
- && vol_id != UBI_FM_DATA_VOLUME_ID) {
- ubi_msg(ubi, "\"delete\" compatible internal volume %d:%d found, will remove it",
- vol_id, lnum);
- }
+ ubi_msg(ubi, "\"delete\" compatible internal volume %d:%d found, will remove it",
+ vol_id, lnum);
+
err = add_to_list(ai, pnum, vol_id, lnum,
ec, 1, &ai->erase);
if (err)
@@ -1037,7 +1092,12 @@ static int scan_peb(struct ubi_device *ubi, struct ubi_attach_info *ai,
if (ec_err)
ubi_warn(ubi, "valid VID header but corrupted EC header at PEB %d",
pnum);
- err = ubi_add_to_av(ubi, ai, pnum, ec, vidh, bitflips);
+
+ if (ubi_is_fm_vol(vol_id))
+ err = add_fastmap(ai, pnum, vidh, ec);
+ else
+ err = ubi_add_to_av(ubi, ai, pnum, ec, vidh, bitflips);
+
if (err)
return err;
@@ -1186,6 +1246,10 @@ static void destroy_ai(struct ubi_attach_info *ai)
list_del(&aeb->u.list);
kmem_cache_free(ai->aeb_slab_cache, aeb);
}
+ list_for_each_entry_safe(aeb, aeb_tmp, &ai->fastmap, u.list) {
+ list_del(&aeb->u.list);
+ kmem_cache_free(ai->aeb_slab_cache, aeb);
+ }
/* Destroy the volume RB-tree */
rb = ai->volumes.rb_node;
@@ -1245,7 +1309,7 @@ static int scan_all(struct ubi_device *ubi, struct ubi_attach_info *ai,
cond_resched();
dbg_gen("process PEB %d", pnum);
- err = scan_peb(ubi, ai, pnum, NULL, NULL);
+ err = scan_peb(ubi, ai, pnum, false);
if (err < 0)
goto out_vidh;
}
@@ -1311,6 +1375,7 @@ static struct ubi_attach_info *alloc_ai(void)
INIT_LIST_HEAD(&ai->free);
INIT_LIST_HEAD(&ai->erase);
INIT_LIST_HEAD(&ai->alien);
+ INIT_LIST_HEAD(&ai->fastmap);
ai->volumes = RB_ROOT;
ai->aeb_slab_cache = kmem_cache_create("ubi_aeb_slab_cache",
sizeof(struct ubi_ainf_peb),
@@ -1326,7 +1391,7 @@ static struct ubi_attach_info *alloc_ai(void)
#ifdef CONFIG_MTD_UBI_FASTMAP
/**
- * scan_fastmap - try to find a fastmap and attach from it.
+ * scan_fast - try to find a fastmap and attach from it.
* @ubi: UBI device description object
* @ai: attach info object
*
@@ -1337,52 +1402,58 @@ static struct ubi_attach_info *alloc_ai(void)
*/
static int scan_fast(struct ubi_device *ubi, struct ubi_attach_info **ai)
{
- int err, pnum, fm_anchor = -1;
- unsigned long long max_sqnum = 0;
+ int err, pnum;
+ struct ubi_attach_info *scan_ai;
err = -ENOMEM;
+ scan_ai = alloc_ai();
+ if (!scan_ai)
+ goto out;
+
ech = kzalloc(ubi->ec_hdr_alsize, GFP_KERNEL);
if (!ech)
- goto out;
+ goto out_ai;
vidh = ubi_zalloc_vid_hdr(ubi, GFP_KERNEL);
if (!vidh)
goto out_ech;
for (pnum = 0; pnum < UBI_FM_MAX_START; pnum++) {
- int vol_id = -1;
- unsigned long long sqnum = -1;
cond_resched();
dbg_gen("process PEB %d", pnum);
- err = scan_peb(ubi, *ai, pnum, &vol_id, &sqnum);
+ err = scan_peb(ubi, scan_ai, pnum, true);
if (err < 0)
goto out_vidh;
-
- if (vol_id == UBI_FM_SB_VOLUME_ID && sqnum > max_sqnum) {
- max_sqnum = sqnum;
- fm_anchor = pnum;
- }
}
ubi_free_vid_hdr(ubi, vidh);
kfree(ech);
- if (fm_anchor < 0)
- return UBI_NO_FASTMAP;
+ if (scan_ai->force_full_scan)
+ err = UBI_NO_FASTMAP;
+ else
+ err = ubi_scan_fastmap(ubi, *ai, scan_ai);
- destroy_ai(*ai);
- *ai = alloc_ai();
- if (!*ai)
- return -ENOMEM;
+ if (err) {
+ /*
+ * Didn't attach via fastmap, do a full scan but reuse what
+ * we've aready scanned.
+ */
+ destroy_ai(*ai);
+ *ai = scan_ai;
+ } else
+ destroy_ai(scan_ai);
- return ubi_scan_fastmap(ubi, *ai, fm_anchor);
+ return err;
out_vidh:
ubi_free_vid_hdr(ubi, vidh);
out_ech:
kfree(ech);
+out_ai:
+ destroy_ai(scan_ai);
out:
return err;
}
diff --git a/drivers/mtd/ubi/build.c b/drivers/mtd/ubi/build.c
index ef3618299494..0680516bb472 100644
--- a/drivers/mtd/ubi/build.c
+++ b/drivers/mtd/ubi/build.c
@@ -874,7 +874,7 @@ int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num,
for (i = 0; i < UBI_MAX_DEVICES; i++) {
ubi = ubi_devices[i];
if (ubi && mtd->index == ubi->mtd->index) {
- ubi_err(ubi, "mtd%d is already attached to ubi%d",
+ pr_err("ubi: mtd%d is already attached to ubi%d",
mtd->index, i);
return -EEXIST;
}
@@ -889,7 +889,7 @@ int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num,
* no sense to attach emulated MTD devices, so we prohibit this.
*/
if (mtd->type == MTD_UBIVOLUME) {
- ubi_err(ubi, "refuse attaching mtd%d - it is already emulated on top of UBI",
+ pr_err("ubi: refuse attaching mtd%d - it is already emulated on top of UBI",
mtd->index);
return -EINVAL;
}
@@ -900,7 +900,7 @@ int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num,
if (!ubi_devices[ubi_num])
break;
if (ubi_num == UBI_MAX_DEVICES) {
- ubi_err(ubi, "only %d UBI devices may be created",
+ pr_err("ubi: only %d UBI devices may be created",
UBI_MAX_DEVICES);
return -ENFILE;
}
@@ -910,7 +910,7 @@ int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num,
/* Make sure ubi_num is not busy */
if (ubi_devices[ubi_num]) {
- ubi_err(ubi, "already exists");
+ pr_err("ubi: ubi%i already exists", ubi_num);
return -EEXIST;
}
}
@@ -992,6 +992,9 @@ int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num,
goto out_detach;
}
+ /* Make device "available" before it becomes accessible via sysfs */
+ ubi_devices[ubi_num] = ubi;
+
err = uif_init(ubi, &ref);
if (err)
goto out_detach;
@@ -1036,7 +1039,6 @@ int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num,
wake_up_process(ubi->bgt_thread);
spin_unlock(&ubi->wl_lock);
- ubi_devices[ubi_num] = ubi;
ubi_notify_all(ubi, UBI_VOLUME_ADDED, NULL);
return ubi_num;
@@ -1047,6 +1049,7 @@ out_uif:
ubi_assert(ref);
uif_close(ubi);
out_detach:
+ ubi_devices[ubi_num] = NULL;
ubi_wl_close(ubi);
ubi_free_internal_volumes(ubi);
vfree(ubi->vtbl);
diff --git a/drivers/mtd/ubi/fastmap.c b/drivers/mtd/ubi/fastmap.c
index 990898b9dc72..48eb55f344eb 100644
--- a/drivers/mtd/ubi/fastmap.c
+++ b/drivers/mtd/ubi/fastmap.c
@@ -15,20 +15,22 @@
*/
#include <linux/crc32.h>
+#include <linux/bitmap.h>
#include "ubi.h"
/**
* init_seen - allocate memory for used for debugging.
* @ubi: UBI device description object
*/
-static inline int *init_seen(struct ubi_device *ubi)
+static inline unsigned long *init_seen(struct ubi_device *ubi)
{
- int *ret;
+ unsigned long *ret;
if (!ubi_dbg_chk_fastmap(ubi))
return NULL;
- ret = kcalloc(ubi->peb_count, sizeof(int), GFP_KERNEL);
+ ret = kcalloc(BITS_TO_LONGS(ubi->peb_count), sizeof(unsigned long),
+ GFP_KERNEL);
if (!ret)
return ERR_PTR(-ENOMEM);
@@ -39,7 +41,7 @@ static inline int *init_seen(struct ubi_device *ubi)
* free_seen - free the seen logic integer array.
* @seen: integer array of @ubi->peb_count size
*/
-static inline void free_seen(int *seen)
+static inline void free_seen(unsigned long *seen)
{
kfree(seen);
}
@@ -50,12 +52,12 @@ static inline void free_seen(int *seen)
* @pnum: The PEB to be makred as seen
* @seen: integer array of @ubi->peb_count size
*/
-static inline void set_seen(struct ubi_device *ubi, int pnum, int *seen)
+static inline void set_seen(struct ubi_device *ubi, int pnum, unsigned long *seen)
{
if (!ubi_dbg_chk_fastmap(ubi) || !seen)
return;
- seen[pnum] = 1;
+ set_bit(pnum, seen);
}
/**
@@ -63,7 +65,7 @@ static inline void set_seen(struct ubi_device *ubi, int pnum, int *seen)
* @ubi: UBI device description object
* @seen: integer array of @ubi->peb_count size
*/
-static int self_check_seen(struct ubi_device *ubi, int *seen)
+static int self_check_seen(struct ubi_device *ubi, unsigned long *seen)
{
int pnum, ret = 0;
@@ -71,7 +73,7 @@ static int self_check_seen(struct ubi_device *ubi, int *seen)
return 0;
for (pnum = 0; pnum < ubi->peb_count; pnum++) {
- if (!seen[pnum] && ubi->lookuptbl[pnum]) {
+ if (test_bit(pnum, seen) && ubi->lookuptbl[pnum]) {
ubi_err(ubi, "self-check failed for PEB %d, fastmap didn't see it", pnum);
ret = -EINVAL;
}
@@ -578,7 +580,7 @@ static int count_fastmap_pebs(struct ubi_attach_info *ai)
list_for_each_entry(aeb, &ai->free, u.list)
n++;
- ubi_rb_for_each_entry(rb1, av, &ai->volumes, rb)
+ ubi_rb_for_each_entry(rb1, av, &ai->volumes, rb)
ubi_rb_for_each_entry(rb2, aeb, &av->root, u.rb)
n++;
@@ -850,27 +852,57 @@ fail:
}
/**
+ * find_fm_anchor - find the most recent Fastmap superblock (anchor)
+ * @ai: UBI attach info to be filled
+ */
+static int find_fm_anchor(struct ubi_attach_info *ai)
+{
+ int ret = -1;
+ struct ubi_ainf_peb *aeb;
+ unsigned long long max_sqnum = 0;
+
+ list_for_each_entry(aeb, &ai->fastmap, u.list) {
+ if (aeb->vol_id == UBI_FM_SB_VOLUME_ID && aeb->sqnum > max_sqnum) {
+ max_sqnum = aeb->sqnum;
+ ret = aeb->pnum;
+ }
+ }
+
+ return ret;
+}
+
+/**
* ubi_scan_fastmap - scan the fastmap.
* @ubi: UBI device object
* @ai: UBI attach info to be filled
- * @fm_anchor: The fastmap starts at this PEB
+ * @scan_ai: UBI attach info from the first 64 PEBs,
+ * used to find the most recent Fastmap data structure
*
* Returns 0 on success, UBI_NO_FASTMAP if no fastmap was found,
* UBI_BAD_FASTMAP if one was found but is not usable.
* < 0 indicates an internal error.
*/
int ubi_scan_fastmap(struct ubi_device *ubi, struct ubi_attach_info *ai,
- int fm_anchor)
+ struct ubi_attach_info *scan_ai)
{
struct ubi_fm_sb *fmsb, *fmsb2;
struct ubi_vid_hdr *vh;
struct ubi_ec_hdr *ech;
struct ubi_fastmap_layout *fm;
- int i, used_blocks, pnum, ret = 0;
+ struct ubi_ainf_peb *tmp_aeb, *aeb;
+ int i, used_blocks, pnum, fm_anchor, ret = 0;
size_t fm_size;
__be32 crc, tmp_crc;
unsigned long long sqnum = 0;
+ fm_anchor = find_fm_anchor(scan_ai);
+ if (fm_anchor < 0)
+ return UBI_NO_FASTMAP;
+
+ /* Move all (possible) fastmap blocks into our new attach structure. */
+ list_for_each_entry_safe(aeb, tmp_aeb, &scan_ai->fastmap, u.list)
+ list_move_tail(&aeb->u.list, &ai->fastmap);
+
down_write(&ubi->fm_protect);
memset(ubi->fm_buf, 0, ubi->fm_size);
@@ -945,6 +977,13 @@ int ubi_scan_fastmap(struct ubi_device *ubi, struct ubi_attach_info *ai,
goto free_hdr;
}
+ if (i == 0 && pnum != fm_anchor) {
+ ubi_err(ubi, "Fastmap anchor PEB mismatch: PEB: %i vs. %i",
+ pnum, fm_anchor);
+ ret = UBI_BAD_FASTMAP;
+ goto free_hdr;
+ }
+
ret = ubi_io_read_ec_hdr(ubi, pnum, ech, 0);
if (ret && ret != UBI_IO_BITFLIPS) {
ubi_err(ubi, "unable to read fastmap block# %i EC (PEB: %i)",
@@ -1102,7 +1141,7 @@ static int ubi_write_fastmap(struct ubi_device *ubi,
struct rb_node *tmp_rb;
int ret, i, j, free_peb_count, used_peb_count, vol_count;
int scrub_peb_count, erase_peb_count;
- int *seen_pebs = NULL;
+ unsigned long *seen_pebs = NULL;
fm_raw = ubi->fm_buf;
memset(ubi->fm_buf, 0, ubi->fm_size);
diff --git a/drivers/mtd/ubi/gluebi.c b/drivers/mtd/ubi/gluebi.c
index cb7c075f2144..1cb287ec32ad 100644
--- a/drivers/mtd/ubi/gluebi.c
+++ b/drivers/mtd/ubi/gluebi.c
@@ -99,9 +99,6 @@ static int gluebi_get_device(struct mtd_info *mtd)
struct gluebi_device *gluebi;
int ubi_mode = UBI_READONLY;
- if (!try_module_get(THIS_MODULE))
- return -ENODEV;
-
if (mtd->flags & MTD_WRITEABLE)
ubi_mode = UBI_READWRITE;
@@ -129,7 +126,6 @@ static int gluebi_get_device(struct mtd_info *mtd)
ubi_mode);
if (IS_ERR(gluebi->desc)) {
mutex_unlock(&devices_mutex);
- module_put(THIS_MODULE);
return PTR_ERR(gluebi->desc);
}
gluebi->refcnt += 1;
@@ -153,7 +149,6 @@ static void gluebi_put_device(struct mtd_info *mtd)
gluebi->refcnt -= 1;
if (gluebi->refcnt == 0)
ubi_close_volume(gluebi->desc);
- module_put(THIS_MODULE);
mutex_unlock(&devices_mutex);
}
diff --git a/drivers/mtd/ubi/io.c b/drivers/mtd/ubi/io.c
index 10cf3b549959..ff8cafe1e5cd 100644
--- a/drivers/mtd/ubi/io.c
+++ b/drivers/mtd/ubi/io.c
@@ -1019,7 +1019,7 @@ int ubi_io_read_vid_hdr(struct ubi_device *ubi, int pnum,
p = (char *)vid_hdr - ubi->vid_hdr_shift;
read_err = ubi_io_read(ubi, p, pnum, ubi->vid_hdr_aloffset,
- ubi->vid_hdr_alsize);
+ ubi->vid_hdr_shift + UBI_VID_HDR_SIZE);
if (read_err && read_err != UBI_IO_BITFLIPS && !mtd_is_eccerr(read_err))
return read_err;
diff --git a/drivers/mtd/ubi/ubi.h b/drivers/mtd/ubi/ubi.h
index 61d4e99755a4..b616a115c9d3 100644
--- a/drivers/mtd/ubi/ubi.h
+++ b/drivers/mtd/ubi/ubi.h
@@ -703,6 +703,8 @@ struct ubi_ainf_volume {
* @erase: list of physical eraseblocks which have to be erased
* @alien: list of physical eraseblocks which should not be used by UBI (e.g.,
* those belonging to "preserve"-compatible internal volumes)
+ * @fastmap: list of physical eraseblocks which relate to fastmap (e.g.,
+ * eraseblocks of the current and not yet erased old fastmap blocks)
* @corr_peb_count: count of PEBs in the @corr list
* @empty_peb_count: count of PEBs which are presumably empty (contain only
* 0xFF bytes)
@@ -713,6 +715,8 @@ struct ubi_ainf_volume {
* @vols_found: number of volumes found
* @highest_vol_id: highest volume ID
* @is_empty: flag indicating whether the MTD device is empty or not
+ * @force_full_scan: flag indicating whether we need to do a full scan and drop
+ all existing Fastmap data structures
* @min_ec: lowest erase counter value
* @max_ec: highest erase counter value
* @max_sqnum: highest sequence number value
@@ -731,6 +735,7 @@ struct ubi_attach_info {
struct list_head free;
struct list_head erase;
struct list_head alien;
+ struct list_head fastmap;
int corr_peb_count;
int empty_peb_count;
int alien_peb_count;
@@ -739,6 +744,7 @@ struct ubi_attach_info {
int vols_found;
int highest_vol_id;
int is_empty;
+ int force_full_scan;
int min_ec;
int max_ec;
unsigned long long max_sqnum;
@@ -911,7 +917,7 @@ int ubi_compare_lebs(struct ubi_device *ubi, const struct ubi_ainf_peb *aeb,
size_t ubi_calc_fm_size(struct ubi_device *ubi);
int ubi_update_fastmap(struct ubi_device *ubi);
int ubi_scan_fastmap(struct ubi_device *ubi, struct ubi_attach_info *ai,
- int fm_anchor);
+ struct ubi_attach_info *scan_ai);
#else
static inline int ubi_update_fastmap(struct ubi_device *ubi) { return 0; }
#endif
@@ -1105,4 +1111,42 @@ static inline int idx2vol_id(const struct ubi_device *ubi, int idx)
return idx;
}
+/**
+ * ubi_is_fm_vol - check whether a volume ID is a Fastmap volume.
+ * @vol_id: volume ID
+ */
+static inline bool ubi_is_fm_vol(int vol_id)
+{
+ switch (vol_id) {
+ case UBI_FM_SB_VOLUME_ID:
+ case UBI_FM_DATA_VOLUME_ID:
+ return true;
+ }
+
+ return false;
+}
+
+/**
+ * ubi_find_fm_block - check whether a PEB is part of the current Fastmap.
+ * @ubi: UBI device description object
+ * @pnum: physical eraseblock to look for
+ *
+ * This function returns a wear leveling object if @pnum relates to the current
+ * fastmap, @NULL otherwise.
+ */
+static inline struct ubi_wl_entry *ubi_find_fm_block(const struct ubi_device *ubi,
+ int pnum)
+{
+ int i;
+
+ if (ubi->fm) {
+ for (i = 0; i < ubi->fm->used_blocks; i++) {
+ if (ubi->fm->e[i]->pnum == pnum)
+ return ubi->fm->e[i];
+ }
+ }
+
+ return NULL;
+}
+
#endif /* !__UBI_UBI_H__ */
diff --git a/drivers/mtd/ubi/vmt.c b/drivers/mtd/ubi/vmt.c
index 10059dfdc1b6..0138f526474a 100644
--- a/drivers/mtd/ubi/vmt.c
+++ b/drivers/mtd/ubi/vmt.c
@@ -488,13 +488,6 @@ int ubi_resize_volume(struct ubi_volume_desc *desc, int reserved_pebs)
spin_unlock(&ubi->volumes_lock);
}
- /* Change volume table record */
- vtbl_rec = ubi->vtbl[vol_id];
- vtbl_rec.reserved_pebs = cpu_to_be32(reserved_pebs);
- err = ubi_change_vtbl_record(ubi, vol_id, &vtbl_rec);
- if (err)
- goto out_acc;
-
if (pebs < 0) {
for (i = 0; i < -pebs; i++) {
err = ubi_eba_unmap_leb(ubi, vol, reserved_pebs + i);
@@ -512,6 +505,24 @@ int ubi_resize_volume(struct ubi_volume_desc *desc, int reserved_pebs)
spin_unlock(&ubi->volumes_lock);
}
+ /*
+ * When we shrink a volume we have to flush all pending (erase) work.
+ * Otherwise it can happen that upon next attach UBI finds a LEB with
+ * lnum > highest_lnum and refuses to attach.
+ */
+ if (pebs < 0) {
+ err = ubi_wl_flush(ubi, vol_id, UBI_ALL);
+ if (err)
+ goto out_acc;
+ }
+
+ /* Change volume table record */
+ vtbl_rec = ubi->vtbl[vol_id];
+ vtbl_rec.reserved_pebs = cpu_to_be32(reserved_pebs);
+ err = ubi_change_vtbl_record(ubi, vol_id, &vtbl_rec);
+ if (err)
+ goto out_acc;
+
vol->reserved_pebs = reserved_pebs;
if (vol->vol_type == UBI_DYNAMIC_VOLUME) {
vol->used_ebs = reserved_pebs;
diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c
index 959c7b12e0b1..f4533266d7b2 100644
--- a/drivers/mtd/ubi/wl.c
+++ b/drivers/mtd/ubi/wl.c
@@ -1598,19 +1598,44 @@ int ubi_wl_init(struct ubi_device *ubi, struct ubi_attach_info *ai)
}
}
- dbg_wl("found %i PEBs", found_pebs);
+ list_for_each_entry(aeb, &ai->fastmap, u.list) {
+ cond_resched();
+
+ e = ubi_find_fm_block(ubi, aeb->pnum);
- if (ubi->fm) {
- ubi_assert(ubi->good_peb_count ==
- found_pebs + ubi->fm->used_blocks);
+ if (e) {
+ ubi_assert(!ubi->lookuptbl[e->pnum]);
+ ubi->lookuptbl[e->pnum] = e;
+ } else {
+ /*
+ * Usually old Fastmap PEBs are scheduled for erasure
+ * and we don't have to care about them but if we face
+ * an power cut before scheduling them we need to
+ * take care of them here.
+ */
+ if (ubi->lookuptbl[aeb->pnum])
+ continue;
+
+ e = kmem_cache_alloc(ubi_wl_entry_slab, GFP_KERNEL);
+ if (!e)
+ goto out_free;
- for (i = 0; i < ubi->fm->used_blocks; i++) {
- e = ubi->fm->e[i];
+ e->pnum = aeb->pnum;
+ e->ec = aeb->ec;
+ ubi_assert(!ubi->lookuptbl[e->pnum]);
ubi->lookuptbl[e->pnum] = e;
+ if (schedule_erase(ubi, e, aeb->vol_id, aeb->lnum, 0)) {
+ wl_entry_destroy(ubi, e);
+ goto out_free;
+ }
}
+
+ found_pebs++;
}
- else
- ubi_assert(ubi->good_peb_count == found_pebs);
+
+ dbg_wl("found %i PEBs", found_pebs);
+
+ ubi_assert(ubi->good_peb_count == found_pebs);
reserved_pebs = WL_RESERVED_PEBS;
ubi_fastmap_init(ubi, &reserved_pebs);
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 1f276fa30ba6..217e8da0628c 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -152,7 +152,7 @@ module_param(lacp_rate, charp, 0);
MODULE_PARM_DESC(lacp_rate, "LACPDU tx rate to request from 802.3ad partner; "
"0 for slow, 1 for fast");
module_param(ad_select, charp, 0);
-MODULE_PARM_DESC(ad_select, "803.ad aggregation selection logic; "
+MODULE_PARM_DESC(ad_select, "802.3ad aggregation selection logic; "
"0 for stable (default), 1 for bandwidth, "
"2 for count");
module_param(min_links, int, 0);
diff --git a/drivers/net/caif/Kconfig b/drivers/net/caif/Kconfig
index 547098086773..f81df91a9ce1 100644
--- a/drivers/net/caif/Kconfig
+++ b/drivers/net/caif/Kconfig
@@ -52,5 +52,5 @@ config CAIF_VIRTIO
The caif driver for CAIF over Virtio.
if CAIF_VIRTIO
-source "drivers/vhost/Kconfig"
+source "drivers/vhost/Kconfig.vringh"
endif
diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4_msg.h b/drivers/net/ethernet/chelsio/cxgb4/t4_msg.h
index 4705e2dea423..e0ebe1378cb2 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/t4_msg.h
+++ b/drivers/net/ethernet/chelsio/cxgb4/t4_msg.h
@@ -104,6 +104,8 @@ enum {
enum CPL_error {
CPL_ERR_NONE = 0,
+ CPL_ERR_TCAM_PARITY = 1,
+ CPL_ERR_TCAM_MISS = 2,
CPL_ERR_TCAM_FULL = 3,
CPL_ERR_BAD_LENGTH = 15,
CPL_ERR_BAD_ROUTE = 18,
diff --git a/drivers/net/ethernet/davicom/dm9000.c b/drivers/net/ethernet/davicom/dm9000.c
index 1471e16ba719..f45385f5c6e5 100644
--- a/drivers/net/ethernet/davicom/dm9000.c
+++ b/drivers/net/ethernet/davicom/dm9000.c
@@ -1299,6 +1299,7 @@ static int
dm9000_open(struct net_device *dev)
{
struct board_info *db = netdev_priv(dev);
+ unsigned int irq_flags = irq_get_trigger_type(dev->irq);
if (netif_msg_ifup(db))
dev_dbg(db->dev, "enabling %s\n", dev->name);
@@ -1306,9 +1307,11 @@ dm9000_open(struct net_device *dev)
/* If there is no IRQ type specified, tell the user that this is a
* problem
*/
- if (irq_get_trigger_type(dev->irq) == IRQF_TRIGGER_NONE)
+ if (irq_flags == IRQF_TRIGGER_NONE)
dev_warn(db->dev, "WARNING: no IRQ resource flags set.\n");
+ irq_flags |= IRQF_SHARED;
+
/* GPIO0 on pre-activate PHY, Reg 1F is not set by reset */
iow(db, DM9000_GPR, 0); /* REG_1F bit0 activate phyxcer */
mdelay(1); /* delay needs by DM9000B */
@@ -1316,8 +1319,7 @@ dm9000_open(struct net_device *dev)
/* Initialize DM9000 board */
dm9000_init_dm9000(dev);
- if (request_irq(dev->irq, dm9000_interrupt, IRQF_SHARED,
- dev->name, dev))
+ if (request_irq(dev->irq, dm9000_interrupt, irq_flags, dev->name, dev))
return -EAGAIN;
/* Now that we have an interrupt handler hooked up we can unmask
* our interrupts
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_gmac.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_gmac.c
index 1235c7f2564b..1e1eb92998fb 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_gmac.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_gmac.c
@@ -17,7 +17,7 @@ static const struct mac_stats_string g_gmac_stats_string[] = {
{"gmac_rx_octets_total_ok", MAC_STATS_FIELD_OFF(rx_good_bytes)},
{"gmac_rx_octets_bad", MAC_STATS_FIELD_OFF(rx_bad_bytes)},
{"gmac_rx_uc_pkts", MAC_STATS_FIELD_OFF(rx_uc_pkts)},
- {"gamc_rx_mc_pkts", MAC_STATS_FIELD_OFF(rx_mc_pkts)},
+ {"gmac_rx_mc_pkts", MAC_STATS_FIELD_OFF(rx_mc_pkts)},
{"gmac_rx_bc_pkts", MAC_STATS_FIELD_OFF(rx_bc_pkts)},
{"gmac_rx_pkts_64octets", MAC_STATS_FIELD_OFF(rx_64bytes)},
{"gmac_rx_pkts_65to127", MAC_STATS_FIELD_OFF(rx_65to127)},
diff --git a/drivers/net/ethernet/intel/e1000e/82571.c b/drivers/net/ethernet/intel/e1000e/82571.c
index 7fd4d54599e4..6b03c8553e59 100644
--- a/drivers/net/ethernet/intel/e1000e/82571.c
+++ b/drivers/net/ethernet/intel/e1000e/82571.c
@@ -2032,7 +2032,8 @@ const struct e1000_info e1000_82574_info = {
| FLAG2_DISABLE_ASPM_L0S
| FLAG2_DISABLE_ASPM_L1
| FLAG2_NO_DISABLE_RX
- | FLAG2_DMA_BURST,
+ | FLAG2_DMA_BURST
+ | FLAG2_CHECK_SYSTIM_OVERFLOW,
.pba = 32,
.max_hw_frame_size = DEFAULT_JUMBO,
.get_variants = e1000_get_variants_82571,
@@ -2053,7 +2054,8 @@ const struct e1000_info e1000_82583_info = {
| FLAG_HAS_CTRLEXT_ON_LOAD,
.flags2 = FLAG2_DISABLE_ASPM_L0S
| FLAG2_DISABLE_ASPM_L1
- | FLAG2_NO_DISABLE_RX,
+ | FLAG2_NO_DISABLE_RX
+ | FLAG2_CHECK_SYSTIM_OVERFLOW,
.pba = 32,
.max_hw_frame_size = DEFAULT_JUMBO,
.get_variants = e1000_get_variants_82571,
diff --git a/drivers/net/ethernet/intel/e1000e/e1000.h b/drivers/net/ethernet/intel/e1000e/e1000.h
index ef96cd11d6d2..879cca47b021 100644
--- a/drivers/net/ethernet/intel/e1000e/e1000.h
+++ b/drivers/net/ethernet/intel/e1000e/e1000.h
@@ -452,6 +452,7 @@ s32 e1000e_get_base_timinca(struct e1000_adapter *adapter, u32 *timinca);
#define FLAG2_PCIM2PCI_ARBITER_WA BIT(11)
#define FLAG2_DFLT_CRC_STRIPPING BIT(12)
#define FLAG2_CHECK_RX_HWTSTAMP BIT(13)
+#define FLAG2_CHECK_SYSTIM_OVERFLOW BIT(14)
#define E1000_RX_DESC_PS(R, i) \
(&(((union e1000_rx_desc_packet_split *)((R).desc))[i]))
diff --git a/drivers/net/ethernet/intel/e1000e/ich8lan.c b/drivers/net/ethernet/intel/e1000e/ich8lan.c
index 3e11322d8d58..f3aaca743ea3 100644
--- a/drivers/net/ethernet/intel/e1000e/ich8lan.c
+++ b/drivers/net/ethernet/intel/e1000e/ich8lan.c
@@ -5885,7 +5885,8 @@ const struct e1000_info e1000_pch_lpt_info = {
| FLAG_HAS_JUMBO_FRAMES
| FLAG_APME_IN_WUC,
.flags2 = FLAG2_HAS_PHY_STATS
- | FLAG2_HAS_EEE,
+ | FLAG2_HAS_EEE
+ | FLAG2_CHECK_SYSTIM_OVERFLOW,
.pba = 26,
.max_hw_frame_size = 9022,
.get_variants = e1000_get_variants_ich8lan,
diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c
index 02f443958f31..7017281ba2dc 100644
--- a/drivers/net/ethernet/intel/e1000e/netdev.c
+++ b/drivers/net/ethernet/intel/e1000e/netdev.c
@@ -4303,6 +4303,42 @@ void e1000e_reinit_locked(struct e1000_adapter *adapter)
}
/**
+ * e1000e_sanitize_systim - sanitize raw cycle counter reads
+ * @hw: pointer to the HW structure
+ * @systim: cycle_t value read, sanitized and returned
+ *
+ * Errata for 82574/82583 possible bad bits read from SYSTIMH/L:
+ * check to see that the time is incrementing at a reasonable
+ * rate and is a multiple of incvalue.
+ **/
+static cycle_t e1000e_sanitize_systim(struct e1000_hw *hw, cycle_t systim)
+{
+ u64 time_delta, rem, temp;
+ cycle_t systim_next;
+ u32 incvalue;
+ int i;
+
+ incvalue = er32(TIMINCA) & E1000_TIMINCA_INCVALUE_MASK;
+ for (i = 0; i < E1000_MAX_82574_SYSTIM_REREADS; i++) {
+ /* latch SYSTIMH on read of SYSTIML */
+ systim_next = (cycle_t)er32(SYSTIML);
+ systim_next |= (cycle_t)er32(SYSTIMH) << 32;
+
+ time_delta = systim_next - systim;
+ temp = time_delta;
+ /* VMWare users have seen incvalue of zero, don't div / 0 */
+ rem = incvalue ? do_div(temp, incvalue) : (time_delta != 0);
+
+ systim = systim_next;
+
+ if ((time_delta < E1000_82574_SYSTIM_EPSILON) && (rem == 0))
+ break;
+ }
+
+ return systim;
+}
+
+/**
* e1000e_cyclecounter_read - read raw cycle counter (used by time counter)
* @cc: cyclecounter structure
**/
@@ -4312,7 +4348,7 @@ static cycle_t e1000e_cyclecounter_read(const struct cyclecounter *cc)
cc);
struct e1000_hw *hw = &adapter->hw;
u32 systimel, systimeh;
- cycle_t systim, systim_next;
+ cycle_t systim;
/* SYSTIMH latching upon SYSTIML read does not work well.
* This means that if SYSTIML overflows after we read it but before
* we read SYSTIMH, the value of SYSTIMH has been incremented and we
@@ -4335,33 +4371,9 @@ static cycle_t e1000e_cyclecounter_read(const struct cyclecounter *cc)
systim = (cycle_t)systimel;
systim |= (cycle_t)systimeh << 32;
- if ((hw->mac.type == e1000_82574) || (hw->mac.type == e1000_82583)) {
- u64 time_delta, rem, temp;
- u32 incvalue;
- int i;
-
- /* errata for 82574/82583 possible bad bits read from SYSTIMH/L
- * check to see that the time is incrementing at a reasonable
- * rate and is a multiple of incvalue
- */
- incvalue = er32(TIMINCA) & E1000_TIMINCA_INCVALUE_MASK;
- for (i = 0; i < E1000_MAX_82574_SYSTIM_REREADS; i++) {
- /* latch SYSTIMH on read of SYSTIML */
- systim_next = (cycle_t)er32(SYSTIML);
- systim_next |= (cycle_t)er32(SYSTIMH) << 32;
-
- time_delta = systim_next - systim;
- temp = time_delta;
- /* VMWare users have seen incvalue of zero, don't div / 0 */
- rem = incvalue ? do_div(temp, incvalue) : (time_delta != 0);
-
- systim = systim_next;
+ if (adapter->flags2 & FLAG2_CHECK_SYSTIM_OVERFLOW)
+ systim = e1000e_sanitize_systim(hw, systim);
- if ((time_delta < E1000_82574_SYSTIM_EPSILON) &&
- (rem == 0))
- break;
- }
- }
return systim;
}
diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c
index 81c99e1be708..c6ac7a61812f 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -4554,23 +4554,38 @@ static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
**/
static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
{
+ int i, tc_unused = 0;
u8 num_tc = 0;
- int i;
+ u8 ret = 0;
/* Scan the ETS Config Priority Table to find
* traffic class enabled for a given priority
- * and use the traffic class index to get the
- * number of traffic classes enabled
+ * and create a bitmask of enabled TCs
*/
- for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
- if (dcbcfg->etscfg.prioritytable[i] > num_tc)
- num_tc = dcbcfg->etscfg.prioritytable[i];
- }
+ for (i = 0; i < I40E_MAX_USER_PRIORITY; i++)
+ num_tc |= BIT(dcbcfg->etscfg.prioritytable[i]);
- /* Traffic class index starts from zero so
- * increment to return the actual count
+ /* Now scan the bitmask to check for
+ * contiguous TCs starting with TC0
*/
- return num_tc + 1;
+ for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
+ if (num_tc & BIT(i)) {
+ if (!tc_unused) {
+ ret++;
+ } else {
+ pr_err("Non-contiguous TC - Disabling DCB\n");
+ return 1;
+ }
+ } else {
+ tc_unused = 1;
+ }
+ }
+
+ /* There is always at least TC0 */
+ if (!ret)
+ ret = 1;
+
+ return ret;
}
/**
diff --git a/drivers/net/ethernet/intel/igb/igb_ptp.c b/drivers/net/ethernet/intel/igb/igb_ptp.c
index e61b647f5f2a..336c103ae374 100644
--- a/drivers/net/ethernet/intel/igb/igb_ptp.c
+++ b/drivers/net/ethernet/intel/igb/igb_ptp.c
@@ -744,7 +744,8 @@ static void igb_ptp_tx_hwtstamp(struct igb_adapter *adapter)
}
}
- shhwtstamps.hwtstamp = ktime_sub_ns(shhwtstamps.hwtstamp, adjust);
+ shhwtstamps.hwtstamp =
+ ktime_add_ns(shhwtstamps.hwtstamp, adjust);
skb_tstamp_tx(adapter->ptp_tx_skb, &shhwtstamps);
dev_kfree_skb_any(adapter->ptp_tx_skb);
@@ -767,13 +768,32 @@ void igb_ptp_rx_pktstamp(struct igb_q_vector *q_vector,
struct sk_buff *skb)
{
__le64 *regval = (__le64 *)va;
+ struct igb_adapter *adapter = q_vector->adapter;
+ int adjust = 0;
/* The timestamp is recorded in little endian format.
* DWORD: 0 1 2 3
* Field: Reserved Reserved SYSTIML SYSTIMH
*/
- igb_ptp_systim_to_hwtstamp(q_vector->adapter, skb_hwtstamps(skb),
+ igb_ptp_systim_to_hwtstamp(adapter, skb_hwtstamps(skb),
le64_to_cpu(regval[1]));
+
+ /* adjust timestamp for the RX latency based on link speed */
+ if (adapter->hw.mac.type == e1000_i210) {
+ switch (adapter->link_speed) {
+ case SPEED_10:
+ adjust = IGB_I210_RX_LATENCY_10;
+ break;
+ case SPEED_100:
+ adjust = IGB_I210_RX_LATENCY_100;
+ break;
+ case SPEED_1000:
+ adjust = IGB_I210_RX_LATENCY_1000;
+ break;
+ }
+ }
+ skb_hwtstamps(skb)->hwtstamp =
+ ktime_sub_ns(skb_hwtstamps(skb)->hwtstamp, adjust);
}
/**
@@ -825,7 +845,7 @@ void igb_ptp_rx_rgtstamp(struct igb_q_vector *q_vector,
}
}
skb_hwtstamps(skb)->hwtstamp =
- ktime_add_ns(skb_hwtstamps(skb)->hwtstamp, adjust);
+ ktime_sub_ns(skb_hwtstamps(skb)->hwtstamp, adjust);
/* Update the last_rx_timestamp timer in order to enable watchdog check
* for error case of latched timestamp on a dropped packet.
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index 5418c69a7463..b4f03748adc0 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -4100,6 +4100,8 @@ static void ixgbe_vlan_promisc_enable(struct ixgbe_adapter *adapter)
struct ixgbe_hw *hw = &adapter->hw;
u32 vlnctrl, i;
+ vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
+
switch (hw->mac.type) {
case ixgbe_mac_82599EB:
case ixgbe_mac_X540:
@@ -4112,8 +4114,7 @@ static void ixgbe_vlan_promisc_enable(struct ixgbe_adapter *adapter)
/* fall through */
case ixgbe_mac_82598EB:
/* legacy case, we can just disable VLAN filtering */
- vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
- vlnctrl &= ~(IXGBE_VLNCTRL_VFE | IXGBE_VLNCTRL_CFIEN);
+ vlnctrl &= ~IXGBE_VLNCTRL_VFE;
IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
return;
}
@@ -4125,6 +4126,10 @@ static void ixgbe_vlan_promisc_enable(struct ixgbe_adapter *adapter)
/* Set flag so we don't redo unnecessary work */
adapter->flags2 |= IXGBE_FLAG2_VLAN_PROMISC;
+ /* For VMDq and SR-IOV we must leave VLAN filtering enabled */
+ vlnctrl |= IXGBE_VLNCTRL_VFE;
+ IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
+
/* Add PF to all active pools */
for (i = IXGBE_VLVF_ENTRIES; --i;) {
u32 reg_offset = IXGBE_VLVFB(i * 2 + VMDQ_P(0) / 32);
@@ -4191,6 +4196,11 @@ static void ixgbe_vlan_promisc_disable(struct ixgbe_adapter *adapter)
struct ixgbe_hw *hw = &adapter->hw;
u32 vlnctrl, i;
+ /* Set VLAN filtering to enabled */
+ vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
+ vlnctrl |= IXGBE_VLNCTRL_VFE;
+ IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
+
switch (hw->mac.type) {
case ixgbe_mac_82599EB:
case ixgbe_mac_X540:
@@ -4202,10 +4212,6 @@ static void ixgbe_vlan_promisc_disable(struct ixgbe_adapter *adapter)
break;
/* fall through */
case ixgbe_mac_82598EB:
- vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
- vlnctrl &= ~IXGBE_VLNCTRL_CFIEN;
- vlnctrl |= IXGBE_VLNCTRL_VFE;
- IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
return;
}
@@ -8390,12 +8396,14 @@ static int parse_tc_actions(struct ixgbe_adapter *adapter,
struct tcf_exts *exts, u64 *action, u8 *queue)
{
const struct tc_action *a;
+ LIST_HEAD(actions);
int err;
if (tc_no_actions(exts))
return -EINVAL;
- tc_for_each_action(a, exts) {
+ tcf_exts_to_list(exts, &actions);
+ list_for_each_entry(a, &actions, list) {
/* Drop action */
if (is_tcf_gact_shot(a)) {
@@ -9517,6 +9525,7 @@ skip_sriov:
/* copy netdev features into list of user selectable features */
netdev->hw_features |= netdev->features |
+ NETIF_F_HW_VLAN_CTAG_FILTER |
NETIF_F_HW_VLAN_CTAG_RX |
NETIF_F_HW_VLAN_CTAG_TX |
NETIF_F_RXALL |
diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
index 994232e03380..1801fd83acc0 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -245,12 +245,16 @@ static int mtk_phy_connect(struct mtk_mac *mac)
case PHY_INTERFACE_MODE_MII:
ge_mode = 1;
break;
- case PHY_INTERFACE_MODE_RMII:
+ case PHY_INTERFACE_MODE_REVMII:
ge_mode = 2;
break;
+ case PHY_INTERFACE_MODE_RMII:
+ if (!mac->id)
+ goto err_phy;
+ ge_mode = 3;
+ break;
default:
- dev_err(eth->dev, "invalid phy_mode\n");
- return -1;
+ goto err_phy;
}
/* put the gmac into the right mode */
@@ -263,13 +267,25 @@ static int mtk_phy_connect(struct mtk_mac *mac)
mac->phy_dev->autoneg = AUTONEG_ENABLE;
mac->phy_dev->speed = 0;
mac->phy_dev->duplex = 0;
+
+ if (of_phy_is_fixed_link(mac->of_node))
+ mac->phy_dev->supported |=
+ SUPPORTED_Pause | SUPPORTED_Asym_Pause;
+
mac->phy_dev->supported &= PHY_GBIT_FEATURES | SUPPORTED_Pause |
SUPPORTED_Asym_Pause;
mac->phy_dev->advertising = mac->phy_dev->supported |
ADVERTISED_Autoneg;
phy_start_aneg(mac->phy_dev);
+ of_node_put(np);
+
return 0;
+
+err_phy:
+ of_node_put(np);
+ dev_err(eth->dev, "invalid phy_mode\n");
+ return -EINVAL;
}
static int mtk_mdio_init(struct mtk_eth *eth)
@@ -541,15 +557,15 @@ static inline struct mtk_tx_buf *mtk_desc_to_tx_buf(struct mtk_tx_ring *ring,
return &ring->buf[idx];
}
-static void mtk_tx_unmap(struct device *dev, struct mtk_tx_buf *tx_buf)
+static void mtk_tx_unmap(struct mtk_eth *eth, struct mtk_tx_buf *tx_buf)
{
if (tx_buf->flags & MTK_TX_FLAGS_SINGLE0) {
- dma_unmap_single(dev,
+ dma_unmap_single(eth->dev,
dma_unmap_addr(tx_buf, dma_addr0),
dma_unmap_len(tx_buf, dma_len0),
DMA_TO_DEVICE);
} else if (tx_buf->flags & MTK_TX_FLAGS_PAGE0) {
- dma_unmap_page(dev,
+ dma_unmap_page(eth->dev,
dma_unmap_addr(tx_buf, dma_addr0),
dma_unmap_len(tx_buf, dma_len0),
DMA_TO_DEVICE);
@@ -594,9 +610,9 @@ static int mtk_tx_map(struct sk_buff *skb, struct net_device *dev,
if (skb_vlan_tag_present(skb))
txd4 |= TX_DMA_INS_VLAN | skb_vlan_tag_get(skb);
- mapped_addr = dma_map_single(&dev->dev, skb->data,
+ mapped_addr = dma_map_single(eth->dev, skb->data,
skb_headlen(skb), DMA_TO_DEVICE);
- if (unlikely(dma_mapping_error(&dev->dev, mapped_addr)))
+ if (unlikely(dma_mapping_error(eth->dev, mapped_addr)))
return -ENOMEM;
WRITE_ONCE(itxd->txd1, mapped_addr);
@@ -622,10 +638,10 @@ static int mtk_tx_map(struct sk_buff *skb, struct net_device *dev,
n_desc++;
frag_map_size = min(frag_size, MTK_TX_DMA_BUF_LEN);
- mapped_addr = skb_frag_dma_map(&dev->dev, frag, offset,
+ mapped_addr = skb_frag_dma_map(eth->dev, frag, offset,
frag_map_size,
DMA_TO_DEVICE);
- if (unlikely(dma_mapping_error(&dev->dev, mapped_addr)))
+ if (unlikely(dma_mapping_error(eth->dev, mapped_addr)))
goto err_dma;
if (i == nr_frags - 1 &&
@@ -678,7 +694,7 @@ err_dma:
tx_buf = mtk_desc_to_tx_buf(ring, itxd);
/* unmap dma */
- mtk_tx_unmap(&dev->dev, tx_buf);
+ mtk_tx_unmap(eth, tx_buf);
itxd->txd3 = TX_DMA_LS0 | TX_DMA_OWNER_CPU;
itxd = mtk_qdma_phys_to_virt(ring, itxd->txd2);
@@ -834,11 +850,11 @@ static int mtk_poll_rx(struct napi_struct *napi, int budget,
netdev->stats.rx_dropped++;
goto release_desc;
}
- dma_addr = dma_map_single(&eth->netdev[mac]->dev,
+ dma_addr = dma_map_single(eth->dev,
new_data + NET_SKB_PAD,
ring->buf_size,
DMA_FROM_DEVICE);
- if (unlikely(dma_mapping_error(&netdev->dev, dma_addr))) {
+ if (unlikely(dma_mapping_error(eth->dev, dma_addr))) {
skb_free_frag(new_data);
netdev->stats.rx_dropped++;
goto release_desc;
@@ -853,7 +869,7 @@ static int mtk_poll_rx(struct napi_struct *napi, int budget,
}
skb_reserve(skb, NET_SKB_PAD + NET_IP_ALIGN);
- dma_unmap_single(&netdev->dev, trxd.rxd1,
+ dma_unmap_single(eth->dev, trxd.rxd1,
ring->buf_size, DMA_FROM_DEVICE);
pktlen = RX_DMA_GET_PLEN0(trxd.rxd2);
skb->dev = netdev;
@@ -935,7 +951,7 @@ static int mtk_poll_tx(struct mtk_eth *eth, int budget)
done[mac]++;
budget--;
}
- mtk_tx_unmap(eth->dev, tx_buf);
+ mtk_tx_unmap(eth, tx_buf);
ring->last_free = desc;
atomic_inc(&ring->free_count);
@@ -1090,7 +1106,7 @@ static void mtk_tx_clean(struct mtk_eth *eth)
if (ring->buf) {
for (i = 0; i < MTK_DMA_SIZE; i++)
- mtk_tx_unmap(eth->dev, &ring->buf[i]);
+ mtk_tx_unmap(eth, &ring->buf[i]);
kfree(ring->buf);
ring->buf = NULL;
}
@@ -1748,6 +1764,7 @@ static int mtk_add_mac(struct mtk_eth *eth, struct device_node *np)
goto free_netdev;
}
spin_lock_init(&mac->hw_stats->stats_lock);
+ u64_stats_init(&mac->hw_stats->syncp);
mac->hw_stats->reg_offset = id * MTK_STAT_OFFSET;
SET_NETDEV_DEV(eth->netdev[id], eth->dev);
diff --git a/drivers/net/ethernet/mellanox/mlx4/fw.c b/drivers/net/ethernet/mellanox/mlx4/fw.c
index f4497cf4d06d..d728704d0c7b 100644
--- a/drivers/net/ethernet/mellanox/mlx4/fw.c
+++ b/drivers/net/ethernet/mellanox/mlx4/fw.c
@@ -721,6 +721,7 @@ int mlx4_QUERY_DEV_CAP(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
#define QUERY_DEV_CAP_RSVD_LKEY_OFFSET 0x98
#define QUERY_DEV_CAP_MAX_ICM_SZ_OFFSET 0xa0
#define QUERY_DEV_CAP_ETH_BACKPL_OFFSET 0x9c
+#define QUERY_DEV_CAP_DIAG_RPRT_PER_PORT 0x9c
#define QUERY_DEV_CAP_FW_REASSIGN_MAC 0x9d
#define QUERY_DEV_CAP_VXLAN 0x9e
#define QUERY_DEV_CAP_MAD_DEMUX_OFFSET 0xb0
@@ -935,6 +936,9 @@ int mlx4_QUERY_DEV_CAP(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_ETH_BACKPL_AN_REP;
if (field32 & (1 << 7))
dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_RECOVERABLE_ERROR_EVENT;
+ MLX4_GET(field32, outbox, QUERY_DEV_CAP_DIAG_RPRT_PER_PORT);
+ if (field32 & (1 << 17))
+ dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT;
MLX4_GET(field, outbox, QUERY_DEV_CAP_FW_REASSIGN_MAC);
if (field & 1<<6)
dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_REASSIGN_MAC_EN;
@@ -2457,6 +2461,42 @@ int mlx4_NOP(struct mlx4_dev *dev)
MLX4_CMD_NATIVE);
}
+int mlx4_query_diag_counters(struct mlx4_dev *dev, u8 op_modifier,
+ const u32 offset[],
+ u32 value[], size_t array_len, u8 port)
+{
+ struct mlx4_cmd_mailbox *mailbox;
+ u32 *outbox;
+ size_t i;
+ int ret;
+
+ mailbox = mlx4_alloc_cmd_mailbox(dev);
+ if (IS_ERR(mailbox))
+ return PTR_ERR(mailbox);
+
+ outbox = mailbox->buf;
+
+ ret = mlx4_cmd_box(dev, 0, mailbox->dma, port, op_modifier,
+ MLX4_CMD_DIAG_RPRT, MLX4_CMD_TIME_CLASS_A,
+ MLX4_CMD_NATIVE);
+ if (ret)
+ goto out;
+
+ for (i = 0; i < array_len; i++) {
+ if (offset[i] > MLX4_MAILBOX_SIZE) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ MLX4_GET(value[i], outbox, offset[i]);
+ }
+
+out:
+ mlx4_free_cmd_mailbox(dev, mailbox);
+ return ret;
+}
+EXPORT_SYMBOL(mlx4_query_diag_counters);
+
int mlx4_get_phys_port_id(struct mlx4_dev *dev)
{
u8 port;
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
index 0f19b01e3fff..dc8b1cb0fdc8 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
@@ -318,6 +318,7 @@ static int parse_tc_nic_actions(struct mlx5e_priv *priv, struct tcf_exts *exts,
u32 *action, u32 *flow_tag)
{
const struct tc_action *a;
+ LIST_HEAD(actions);
if (tc_no_actions(exts))
return -EINVAL;
@@ -325,7 +326,8 @@ static int parse_tc_nic_actions(struct mlx5e_priv *priv, struct tcf_exts *exts,
*flow_tag = MLX5_FS_DEFAULT_FLOW_TAG;
*action = 0;
- tc_for_each_action(a, exts) {
+ tcf_exts_to_list(exts, &actions);
+ list_for_each_entry(a, &actions, list) {
/* Only support a single action per rule */
if (*action)
return -EINVAL;
@@ -362,13 +364,15 @@ static int parse_tc_fdb_actions(struct mlx5e_priv *priv, struct tcf_exts *exts,
u32 *action, u32 *dest_vport)
{
const struct tc_action *a;
+ LIST_HEAD(actions);
if (tc_no_actions(exts))
return -EINVAL;
*action = 0;
- tc_for_each_action(a, exts) {
+ tcf_exts_to_list(exts, &actions);
+ list_for_each_entry(a, &actions, list) {
/* Only support a single action per rule */
if (*action)
return -EINVAL;
@@ -503,6 +507,7 @@ int mlx5e_stats_flower(struct mlx5e_priv *priv,
struct mlx5e_tc_flow *flow;
struct tc_action *a;
struct mlx5_fc *counter;
+ LIST_HEAD(actions);
u64 bytes;
u64 packets;
u64 lastuse;
@@ -518,7 +523,8 @@ int mlx5e_stats_flower(struct mlx5e_priv *priv,
mlx5_fc_query_cached(counter, &bytes, &packets, &lastuse);
- tc_for_each_action(a, f->exts)
+ tcf_exts_to_list(f->exts, &actions);
+ list_for_each_entry(a, &actions, list)
tcf_action_stats_update(a, bytes, packets, lastuse);
return 0;
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/srq.c b/drivers/net/ethernet/mellanox/mlx5/core/srq.c
index 04bc522605a0..c07f4d01b70e 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/srq.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/srq.c
@@ -63,12 +63,12 @@ void mlx5_srq_event(struct mlx5_core_dev *dev, u32 srqn, int event_type)
complete(&srq->free);
}
-static int get_pas_size(void *srqc)
+static int get_pas_size(struct mlx5_srq_attr *in)
{
- u32 log_page_size = MLX5_GET(srqc, srqc, log_page_size) + 12;
- u32 log_srq_size = MLX5_GET(srqc, srqc, log_srq_size);
- u32 log_rq_stride = MLX5_GET(srqc, srqc, log_rq_stride);
- u32 page_offset = MLX5_GET(srqc, srqc, page_offset);
+ u32 log_page_size = in->log_page_size + 12;
+ u32 log_srq_size = in->log_size;
+ u32 log_rq_stride = in->wqe_shift;
+ u32 page_offset = in->page_offset;
u32 po_quanta = 1 << (log_page_size - 6);
u32 rq_sz = 1 << (log_srq_size + 4 + log_rq_stride);
u32 page_size = 1 << log_page_size;
@@ -78,57 +78,58 @@ static int get_pas_size(void *srqc)
return rq_num_pas * sizeof(u64);
}
-static void rmpc_srqc_reformat(void *srqc, void *rmpc, bool srqc_to_rmpc)
+static void set_wq(void *wq, struct mlx5_srq_attr *in)
{
- void *wq = MLX5_ADDR_OF(rmpc, rmpc, wq);
-
- if (srqc_to_rmpc) {
- switch (MLX5_GET(srqc, srqc, state)) {
- case MLX5_SRQC_STATE_GOOD:
- MLX5_SET(rmpc, rmpc, state, MLX5_RMPC_STATE_RDY);
- break;
- case MLX5_SRQC_STATE_ERROR:
- MLX5_SET(rmpc, rmpc, state, MLX5_RMPC_STATE_ERR);
- break;
- default:
- pr_warn("%s: %d: Unknown srq state = 0x%x\n", __func__,
- __LINE__, MLX5_GET(srqc, srqc, state));
- MLX5_SET(rmpc, rmpc, state, MLX5_GET(srqc, srqc, state));
- }
-
- MLX5_SET(wq, wq, wq_signature, MLX5_GET(srqc, srqc, wq_signature));
- MLX5_SET(wq, wq, log_wq_pg_sz, MLX5_GET(srqc, srqc, log_page_size));
- MLX5_SET(wq, wq, log_wq_stride, MLX5_GET(srqc, srqc, log_rq_stride) + 4);
- MLX5_SET(wq, wq, log_wq_sz, MLX5_GET(srqc, srqc, log_srq_size));
- MLX5_SET(wq, wq, page_offset, MLX5_GET(srqc, srqc, page_offset));
- MLX5_SET(wq, wq, lwm, MLX5_GET(srqc, srqc, lwm));
- MLX5_SET(wq, wq, pd, MLX5_GET(srqc, srqc, pd));
- MLX5_SET64(wq, wq, dbr_addr, MLX5_GET64(srqc, srqc, dbr_addr));
- } else {
- switch (MLX5_GET(rmpc, rmpc, state)) {
- case MLX5_RMPC_STATE_RDY:
- MLX5_SET(srqc, srqc, state, MLX5_SRQC_STATE_GOOD);
- break;
- case MLX5_RMPC_STATE_ERR:
- MLX5_SET(srqc, srqc, state, MLX5_SRQC_STATE_ERROR);
- break;
- default:
- pr_warn("%s: %d: Unknown rmp state = 0x%x\n",
- __func__, __LINE__,
- MLX5_GET(rmpc, rmpc, state));
- MLX5_SET(srqc, srqc, state,
- MLX5_GET(rmpc, rmpc, state));
- }
-
- MLX5_SET(srqc, srqc, wq_signature, MLX5_GET(wq, wq, wq_signature));
- MLX5_SET(srqc, srqc, log_page_size, MLX5_GET(wq, wq, log_wq_pg_sz));
- MLX5_SET(srqc, srqc, log_rq_stride, MLX5_GET(wq, wq, log_wq_stride) - 4);
- MLX5_SET(srqc, srqc, log_srq_size, MLX5_GET(wq, wq, log_wq_sz));
- MLX5_SET(srqc, srqc, page_offset, MLX5_GET(wq, wq, page_offset));
- MLX5_SET(srqc, srqc, lwm, MLX5_GET(wq, wq, lwm));
- MLX5_SET(srqc, srqc, pd, MLX5_GET(wq, wq, pd));
- MLX5_SET64(srqc, srqc, dbr_addr, MLX5_GET64(wq, wq, dbr_addr));
- }
+ MLX5_SET(wq, wq, wq_signature, !!(in->flags
+ & MLX5_SRQ_FLAG_WQ_SIG));
+ MLX5_SET(wq, wq, log_wq_pg_sz, in->log_page_size);
+ MLX5_SET(wq, wq, log_wq_stride, in->wqe_shift + 4);
+ MLX5_SET(wq, wq, log_wq_sz, in->log_size);
+ MLX5_SET(wq, wq, page_offset, in->page_offset);
+ MLX5_SET(wq, wq, lwm, in->lwm);
+ MLX5_SET(wq, wq, pd, in->pd);
+ MLX5_SET64(wq, wq, dbr_addr, in->db_record);
+}
+
+static void set_srqc(void *srqc, struct mlx5_srq_attr *in)
+{
+ MLX5_SET(srqc, srqc, wq_signature, !!(in->flags
+ & MLX5_SRQ_FLAG_WQ_SIG));
+ MLX5_SET(srqc, srqc, log_page_size, in->log_page_size);
+ MLX5_SET(srqc, srqc, log_rq_stride, in->wqe_shift);
+ MLX5_SET(srqc, srqc, log_srq_size, in->log_size);
+ MLX5_SET(srqc, srqc, page_offset, in->page_offset);
+ MLX5_SET(srqc, srqc, lwm, in->lwm);
+ MLX5_SET(srqc, srqc, pd, in->pd);
+ MLX5_SET64(srqc, srqc, dbr_addr, in->db_record);
+ MLX5_SET(srqc, srqc, xrcd, in->xrcd);
+ MLX5_SET(srqc, srqc, cqn, in->cqn);
+}
+
+static void get_wq(void *wq, struct mlx5_srq_attr *in)
+{
+ if (MLX5_GET(wq, wq, wq_signature))
+ in->flags &= MLX5_SRQ_FLAG_WQ_SIG;
+ in->log_page_size = MLX5_GET(wq, wq, log_wq_pg_sz);
+ in->wqe_shift = MLX5_GET(wq, wq, log_wq_stride) - 4;
+ in->log_size = MLX5_GET(wq, wq, log_wq_sz);
+ in->page_offset = MLX5_GET(wq, wq, page_offset);
+ in->lwm = MLX5_GET(wq, wq, lwm);
+ in->pd = MLX5_GET(wq, wq, pd);
+ in->db_record = MLX5_GET64(wq, wq, dbr_addr);
+}
+
+static void get_srqc(void *srqc, struct mlx5_srq_attr *in)
+{
+ if (MLX5_GET(srqc, srqc, wq_signature))
+ in->flags &= MLX5_SRQ_FLAG_WQ_SIG;
+ in->log_page_size = MLX5_GET(srqc, srqc, log_page_size);
+ in->wqe_shift = MLX5_GET(srqc, srqc, log_rq_stride);
+ in->log_size = MLX5_GET(srqc, srqc, log_srq_size);
+ in->page_offset = MLX5_GET(srqc, srqc, page_offset);
+ in->lwm = MLX5_GET(srqc, srqc, lwm);
+ in->pd = MLX5_GET(srqc, srqc, pd);
+ in->db_record = MLX5_GET64(srqc, srqc, dbr_addr);
}
struct mlx5_core_srq *mlx5_core_get_srq(struct mlx5_core_dev *dev, u32 srqn)
@@ -149,19 +150,36 @@ struct mlx5_core_srq *mlx5_core_get_srq(struct mlx5_core_dev *dev, u32 srqn)
EXPORT_SYMBOL(mlx5_core_get_srq);
static int create_srq_cmd(struct mlx5_core_dev *dev, struct mlx5_core_srq *srq,
- struct mlx5_create_srq_mbox_in *in, int inlen)
+ struct mlx5_srq_attr *in)
{
- struct mlx5_create_srq_mbox_out out;
+ u32 create_out[MLX5_ST_SZ_DW(create_srq_out)] = {0};
+ void *create_in;
+ void *srqc;
+ void *pas;
+ int pas_size;
+ int inlen;
int err;
- memset(&out, 0, sizeof(out));
+ pas_size = get_pas_size(in);
+ inlen = MLX5_ST_SZ_BYTES(create_srq_in) + pas_size;
+ create_in = mlx5_vzalloc(inlen);
+ if (!create_in)
+ return -ENOMEM;
+
+ srqc = MLX5_ADDR_OF(create_srq_in, create_in, srq_context_entry);
+ pas = MLX5_ADDR_OF(create_srq_in, create_in, pas);
- in->hdr.opcode = cpu_to_be16(MLX5_CMD_OP_CREATE_SRQ);
+ set_srqc(srqc, in);
+ memcpy(pas, in->pas, pas_size);
- err = mlx5_cmd_exec_check_status(dev, (u32 *)in, inlen, (u32 *)(&out),
- sizeof(out));
+ MLX5_SET(create_srq_in, create_in, opcode,
+ MLX5_CMD_OP_CREATE_SRQ);
- srq->srqn = be32_to_cpu(out.srqn) & 0xffffff;
+ err = mlx5_cmd_exec_check_status(dev, create_in, inlen, create_out,
+ sizeof(create_out));
+ kvfree(create_in);
+ if (!err)
+ srq->srqn = MLX5_GET(create_srq_out, create_out, srqn);
return err;
}
@@ -169,67 +187,75 @@ static int create_srq_cmd(struct mlx5_core_dev *dev, struct mlx5_core_srq *srq,
static int destroy_srq_cmd(struct mlx5_core_dev *dev,
struct mlx5_core_srq *srq)
{
- struct mlx5_destroy_srq_mbox_in in;
- struct mlx5_destroy_srq_mbox_out out;
+ u32 srq_in[MLX5_ST_SZ_DW(destroy_srq_in)] = {0};
+ u32 srq_out[MLX5_ST_SZ_DW(destroy_srq_out)] = {0};
- memset(&in, 0, sizeof(in));
- memset(&out, 0, sizeof(out));
- in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DESTROY_SRQ);
- in.srqn = cpu_to_be32(srq->srqn);
+ MLX5_SET(destroy_srq_in, srq_in, opcode,
+ MLX5_CMD_OP_DESTROY_SRQ);
+ MLX5_SET(destroy_srq_in, srq_in, srqn, srq->srqn);
- return mlx5_cmd_exec_check_status(dev, (u32 *)(&in), sizeof(in),
- (u32 *)(&out), sizeof(out));
+ return mlx5_cmd_exec_check_status(dev, srq_in, sizeof(srq_in),
+ srq_out, sizeof(srq_out));
}
static int arm_srq_cmd(struct mlx5_core_dev *dev, struct mlx5_core_srq *srq,
u16 lwm, int is_srq)
{
- struct mlx5_arm_srq_mbox_in in;
- struct mlx5_arm_srq_mbox_out out;
-
- memset(&in, 0, sizeof(in));
- memset(&out, 0, sizeof(out));
+ /* arm_srq structs missing using identical xrc ones */
+ u32 srq_in[MLX5_ST_SZ_DW(arm_xrc_srq_in)] = {0};
+ u32 srq_out[MLX5_ST_SZ_DW(arm_xrc_srq_out)] = {0};
- in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_ARM_RQ);
- in.hdr.opmod = cpu_to_be16(!!is_srq);
- in.srqn = cpu_to_be32(srq->srqn);
- in.lwm = cpu_to_be16(lwm);
+ MLX5_SET(arm_xrc_srq_in, srq_in, opcode, MLX5_CMD_OP_ARM_XRC_SRQ);
+ MLX5_SET(arm_xrc_srq_in, srq_in, xrc_srqn, srq->srqn);
+ MLX5_SET(arm_xrc_srq_in, srq_in, lwm, lwm);
- return mlx5_cmd_exec_check_status(dev, (u32 *)(&in),
- sizeof(in), (u32 *)(&out),
- sizeof(out));
+ return mlx5_cmd_exec_check_status(dev, srq_in, sizeof(srq_in),
+ srq_out, sizeof(srq_out));
}
static int query_srq_cmd(struct mlx5_core_dev *dev, struct mlx5_core_srq *srq,
- struct mlx5_query_srq_mbox_out *out)
+ struct mlx5_srq_attr *out)
{
- struct mlx5_query_srq_mbox_in in;
+ u32 srq_in[MLX5_ST_SZ_DW(query_srq_in)] = {0};
+ u32 *srq_out;
+ void *srqc;
+ int err;
- memset(&in, 0, sizeof(in));
+ srq_out = mlx5_vzalloc(MLX5_ST_SZ_BYTES(query_srq_out));
+ if (!srq_out)
+ return -ENOMEM;
- in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_QUERY_SRQ);
- in.srqn = cpu_to_be32(srq->srqn);
+ MLX5_SET(query_srq_in, srq_in, opcode,
+ MLX5_CMD_OP_QUERY_SRQ);
+ MLX5_SET(query_srq_in, srq_in, srqn, srq->srqn);
+ err = mlx5_cmd_exec_check_status(dev, srq_in, sizeof(srq_in),
+ srq_out,
+ MLX5_ST_SZ_BYTES(query_srq_out));
+ if (err)
+ goto out;
- return mlx5_cmd_exec_check_status(dev, (u32 *)(&in), sizeof(in),
- (u32 *)out, sizeof(*out));
+ srqc = MLX5_ADDR_OF(query_srq_out, srq_out, srq_context_entry);
+ get_srqc(srqc, out);
+ if (MLX5_GET(srqc, srqc, state) != MLX5_SRQC_STATE_GOOD)
+ out->flags |= MLX5_SRQ_FLAG_ERR;
+out:
+ kvfree(srq_out);
+ return err;
}
static int create_xrc_srq_cmd(struct mlx5_core_dev *dev,
struct mlx5_core_srq *srq,
- struct mlx5_create_srq_mbox_in *in,
- int srq_inlen)
+ struct mlx5_srq_attr *in)
{
u32 create_out[MLX5_ST_SZ_DW(create_xrc_srq_out)];
void *create_in;
- void *srqc;
void *xrc_srqc;
void *pas;
int pas_size;
int inlen;
int err;
- srqc = MLX5_ADDR_OF(create_srq_in, in, srq_context_entry);
- pas_size = get_pas_size(srqc);
+ pas_size = get_pas_size(in);
inlen = MLX5_ST_SZ_BYTES(create_xrc_srq_in) + pas_size;
create_in = mlx5_vzalloc(inlen);
if (!create_in)
@@ -239,7 +265,8 @@ static int create_xrc_srq_cmd(struct mlx5_core_dev *dev,
xrc_srq_context_entry);
pas = MLX5_ADDR_OF(create_xrc_srq_in, create_in, pas);
- memcpy(xrc_srqc, srqc, MLX5_ST_SZ_BYTES(srqc));
+ set_srqc(xrc_srqc, in);
+ MLX5_SET(xrc_srqc, xrc_srqc, user_index, in->user_index);
memcpy(pas, in->pas, pas_size);
MLX5_SET(create_xrc_srq_in, create_in, opcode,
MLX5_CMD_OP_CREATE_XRC_SRQ);
@@ -293,11 +320,10 @@ static int arm_xrc_srq_cmd(struct mlx5_core_dev *dev,
static int query_xrc_srq_cmd(struct mlx5_core_dev *dev,
struct mlx5_core_srq *srq,
- struct mlx5_query_srq_mbox_out *out)
+ struct mlx5_srq_attr *out)
{
u32 xrcsrq_in[MLX5_ST_SZ_DW(query_xrc_srq_in)];
u32 *xrcsrq_out;
- void *srqc;
void *xrc_srqc;
int err;
@@ -317,8 +343,9 @@ static int query_xrc_srq_cmd(struct mlx5_core_dev *dev,
xrc_srqc = MLX5_ADDR_OF(query_xrc_srq_out, xrcsrq_out,
xrc_srq_context_entry);
- srqc = MLX5_ADDR_OF(query_srq_out, out, srq_context_entry);
- memcpy(srqc, xrc_srqc, MLX5_ST_SZ_BYTES(srqc));
+ get_srqc(xrc_srqc, out);
+ if (MLX5_GET(xrc_srqc, xrc_srqc, state) != MLX5_XRC_SRQC_STATE_GOOD)
+ out->flags |= MLX5_SRQ_FLAG_ERR;
out:
kvfree(xrcsrq_out);
@@ -326,26 +353,27 @@ out:
}
static int create_rmp_cmd(struct mlx5_core_dev *dev, struct mlx5_core_srq *srq,
- struct mlx5_create_srq_mbox_in *in, int srq_inlen)
+ struct mlx5_srq_attr *in)
{
void *create_in;
void *rmpc;
- void *srqc;
+ void *wq;
int pas_size;
int inlen;
int err;
- srqc = MLX5_ADDR_OF(create_srq_in, in, srq_context_entry);
- pas_size = get_pas_size(srqc);
+ pas_size = get_pas_size(in);
inlen = MLX5_ST_SZ_BYTES(create_rmp_in) + pas_size;
create_in = mlx5_vzalloc(inlen);
if (!create_in)
return -ENOMEM;
rmpc = MLX5_ADDR_OF(create_rmp_in, create_in, ctx);
+ wq = MLX5_ADDR_OF(rmpc, rmpc, wq);
+ MLX5_SET(rmpc, rmpc, state, MLX5_RMPC_STATE_RDY);
+ set_wq(wq, in);
memcpy(MLX5_ADDR_OF(rmpc, rmpc, wq.pas), in->pas, pas_size);
- rmpc_srqc_reformat(srqc, rmpc, true);
err = mlx5_core_create_rmp(dev, create_in, inlen, &srq->srqn);
@@ -390,11 +418,10 @@ static int arm_rmp_cmd(struct mlx5_core_dev *dev,
}
static int query_rmp_cmd(struct mlx5_core_dev *dev, struct mlx5_core_srq *srq,
- struct mlx5_query_srq_mbox_out *out)
+ struct mlx5_srq_attr *out)
{
u32 *rmp_out;
void *rmpc;
- void *srqc;
int err;
rmp_out = mlx5_vzalloc(MLX5_ST_SZ_BYTES(query_rmp_out));
@@ -405,9 +432,10 @@ static int query_rmp_cmd(struct mlx5_core_dev *dev, struct mlx5_core_srq *srq,
if (err)
goto out;
- srqc = MLX5_ADDR_OF(query_srq_out, out, srq_context_entry);
rmpc = MLX5_ADDR_OF(query_rmp_out, rmp_out, rmp_context);
- rmpc_srqc_reformat(srqc, rmpc, false);
+ get_wq(MLX5_ADDR_OF(rmpc, rmpc, wq), out);
+ if (MLX5_GET(rmpc, rmpc, state) != MLX5_RMPC_STATE_RDY)
+ out->flags |= MLX5_SRQ_FLAG_ERR;
out:
kvfree(rmp_out);
@@ -416,15 +444,14 @@ out:
static int create_srq_split(struct mlx5_core_dev *dev,
struct mlx5_core_srq *srq,
- struct mlx5_create_srq_mbox_in *in,
- int inlen, int is_xrc)
+ struct mlx5_srq_attr *in)
{
if (!dev->issi)
- return create_srq_cmd(dev, srq, in, inlen);
+ return create_srq_cmd(dev, srq, in);
else if (srq->common.res == MLX5_RES_XSRQ)
- return create_xrc_srq_cmd(dev, srq, in, inlen);
+ return create_xrc_srq_cmd(dev, srq, in);
else
- return create_rmp_cmd(dev, srq, in, inlen);
+ return create_rmp_cmd(dev, srq, in);
}
static int destroy_srq_split(struct mlx5_core_dev *dev,
@@ -439,15 +466,17 @@ static int destroy_srq_split(struct mlx5_core_dev *dev,
}
int mlx5_core_create_srq(struct mlx5_core_dev *dev, struct mlx5_core_srq *srq,
- struct mlx5_create_srq_mbox_in *in, int inlen,
- int is_xrc)
+ struct mlx5_srq_attr *in)
{
int err;
struct mlx5_srq_table *table = &dev->priv.srq_table;
- srq->common.res = is_xrc ? MLX5_RES_XSRQ : MLX5_RES_SRQ;
+ if (in->type == IB_SRQT_XRC)
+ srq->common.res = MLX5_RES_XSRQ;
+ else
+ srq->common.res = MLX5_RES_SRQ;
- err = create_srq_split(dev, srq, in, inlen, is_xrc);
+ err = create_srq_split(dev, srq, in);
if (err)
return err;
@@ -502,7 +531,7 @@ int mlx5_core_destroy_srq(struct mlx5_core_dev *dev, struct mlx5_core_srq *srq)
EXPORT_SYMBOL(mlx5_core_destroy_srq);
int mlx5_core_query_srq(struct mlx5_core_dev *dev, struct mlx5_core_srq *srq,
- struct mlx5_query_srq_mbox_out *out)
+ struct mlx5_srq_attr *out)
{
if (!dev->issi)
return query_srq_cmd(dev, srq, out);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/transobj.c b/drivers/net/ethernet/mellanox/mlx5/core/transobj.c
index 03a5093ffeb7..28274a6fbafe 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/transobj.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/transobj.c
@@ -85,6 +85,7 @@ int mlx5_core_create_rq(struct mlx5_core_dev *dev, u32 *in, int inlen, u32 *rqn)
return err;
}
+EXPORT_SYMBOL(mlx5_core_create_rq);
int mlx5_core_modify_rq(struct mlx5_core_dev *dev, u32 rqn, u32 *in, int inlen)
{
@@ -110,6 +111,7 @@ void mlx5_core_destroy_rq(struct mlx5_core_dev *dev, u32 rqn)
mlx5_cmd_exec_check_status(dev, in, sizeof(in), out, sizeof(out));
}
+EXPORT_SYMBOL(mlx5_core_destroy_rq);
int mlx5_core_query_rq(struct mlx5_core_dev *dev, u32 rqn, u32 *out)
{
@@ -430,6 +432,7 @@ int mlx5_core_create_rqt(struct mlx5_core_dev *dev, u32 *in, int inlen,
return err;
}
+EXPORT_SYMBOL(mlx5_core_create_rqt);
int mlx5_core_modify_rqt(struct mlx5_core_dev *dev, u32 rqtn, u32 *in,
int inlen)
@@ -455,3 +458,4 @@ void mlx5_core_destroy_rqt(struct mlx5_core_dev *dev, u32 rqtn)
mlx5_cmd_exec_check_status(dev, in, sizeof(in), out, sizeof(out));
}
+EXPORT_SYMBOL(mlx5_core_destroy_rqt);
diff --git a/drivers/net/ethernet/mellanox/mlxsw/reg.h b/drivers/net/ethernet/mellanox/mlxsw/reg.h
index 7ca9201f7dcb..1721098eef13 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/reg.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/reg.h
@@ -3383,6 +3383,15 @@ MLXSW_ITEM32(reg, ritr, ipv4_fe, 0x04, 29, 1);
*/
MLXSW_ITEM32(reg, ritr, ipv6_fe, 0x04, 28, 1);
+/* reg_ritr_lb_en
+ * Loop-back filter enable for unicast packets.
+ * If the flag is set then loop-back filter for unicast packets is
+ * implemented on the RIF. Multicast packets are always subject to
+ * loop-back filtering.
+ * Access: RW
+ */
+MLXSW_ITEM32(reg, ritr, lb_en, 0x04, 24, 1);
+
/* reg_ritr_virtual_router
* Virtual router ID associated with the router interface.
* Access: RW
@@ -3484,6 +3493,7 @@ static inline void mlxsw_reg_ritr_pack(char *payload, bool enable,
mlxsw_reg_ritr_op_set(payload, op);
mlxsw_reg_ritr_rif_set(payload, rif);
mlxsw_reg_ritr_ipv4_fe_set(payload, 1);
+ mlxsw_reg_ritr_lb_en_set(payload, 1);
mlxsw_reg_ritr_mtu_set(payload, mtu);
mlxsw_reg_ritr_if_mac_memcpy_to(payload, mac);
}
@@ -4000,6 +4010,7 @@ static inline void mlxsw_reg_ralue_pack(char *payload,
{
MLXSW_REG_ZERO(ralue, payload);
mlxsw_reg_ralue_protocol_set(payload, protocol);
+ mlxsw_reg_ralue_op_set(payload, op);
mlxsw_reg_ralue_virtual_router_set(payload, virtual_router);
mlxsw_reg_ralue_prefix_len_set(payload, prefix_len);
mlxsw_reg_ralue_entry_type_set(payload,
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index e1b8f62ccaed..1f8168906811 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -942,8 +942,8 @@ static void mlxsw_sp_port_vport_destroy(struct mlxsw_sp_port *mlxsw_sp_vport)
kfree(mlxsw_sp_vport);
}
-int mlxsw_sp_port_add_vid(struct net_device *dev, __be16 __always_unused proto,
- u16 vid)
+static int mlxsw_sp_port_add_vid(struct net_device *dev,
+ __be16 __always_unused proto, u16 vid)
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
struct mlxsw_sp_port *mlxsw_sp_vport;
@@ -956,16 +956,12 @@ int mlxsw_sp_port_add_vid(struct net_device *dev, __be16 __always_unused proto,
if (!vid)
return 0;
- if (mlxsw_sp_port_vport_find(mlxsw_sp_port, vid)) {
- netdev_warn(dev, "VID=%d already configured\n", vid);
+ if (mlxsw_sp_port_vport_find(mlxsw_sp_port, vid))
return 0;
- }
mlxsw_sp_vport = mlxsw_sp_port_vport_create(mlxsw_sp_port, vid);
- if (!mlxsw_sp_vport) {
- netdev_err(dev, "Failed to create vPort for VID=%d\n", vid);
+ if (!mlxsw_sp_vport)
return -ENOMEM;
- }
/* When adding the first VLAN interface on a bridged port we need to
* transition all the active 802.1Q bridge VLANs to use explicit
@@ -973,24 +969,17 @@ int mlxsw_sp_port_add_vid(struct net_device *dev, __be16 __always_unused proto,
*/
if (list_is_singular(&mlxsw_sp_port->vports_list)) {
err = mlxsw_sp_port_vp_mode_trans(mlxsw_sp_port);
- if (err) {
- netdev_err(dev, "Failed to set to Virtual mode\n");
+ if (err)
goto err_port_vp_mode_trans;
- }
}
err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, false);
- if (err) {
- netdev_err(dev, "Failed to disable learning for VID=%d\n", vid);
+ if (err)
goto err_port_vid_learning_set;
- }
err = mlxsw_sp_port_vlan_set(mlxsw_sp_vport, vid, vid, true, untagged);
- if (err) {
- netdev_err(dev, "Failed to set VLAN membership for VID=%d\n",
- vid);
+ if (err)
goto err_port_add_vid;
- }
return 0;
@@ -1010,7 +999,6 @@ static int mlxsw_sp_port_kill_vid(struct net_device *dev,
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
struct mlxsw_sp_port *mlxsw_sp_vport;
struct mlxsw_sp_fid *f;
- int err;
/* VLAN 0 is removed from HW filter when device goes down, but
* it is reserved in our case, so simply return.
@@ -1019,23 +1007,12 @@ static int mlxsw_sp_port_kill_vid(struct net_device *dev,
return 0;
mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
- if (!mlxsw_sp_vport) {
- netdev_warn(dev, "VID=%d does not exist\n", vid);
+ if (WARN_ON(!mlxsw_sp_vport))
return 0;
- }
- err = mlxsw_sp_port_vlan_set(mlxsw_sp_vport, vid, vid, false, false);
- if (err) {
- netdev_err(dev, "Failed to set VLAN membership for VID=%d\n",
- vid);
- return err;
- }
+ mlxsw_sp_port_vlan_set(mlxsw_sp_vport, vid, vid, false, false);
- err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, true);
- if (err) {
- netdev_err(dev, "Failed to enable learning for VID=%d\n", vid);
- return err;
- }
+ mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, true);
/* Drop FID reference. If this was the last reference the
* resources will be freed.
@@ -1048,13 +1025,8 @@ static int mlxsw_sp_port_kill_vid(struct net_device *dev,
* transition all active 802.1Q bridge VLANs to use VID to FID
* mappings and set port's mode to VLAN mode.
*/
- if (list_is_singular(&mlxsw_sp_port->vports_list)) {
- err = mlxsw_sp_port_vlan_mode_trans(mlxsw_sp_port);
- if (err) {
- netdev_err(dev, "Failed to set to VLAN mode\n");
- return err;
- }
- }
+ if (list_is_singular(&mlxsw_sp_port->vports_list))
+ mlxsw_sp_port_vlan_mode_trans(mlxsw_sp_port);
mlxsw_sp_port_vport_destroy(mlxsw_sp_vport);
@@ -1149,6 +1121,7 @@ static int mlxsw_sp_port_add_cls_matchall(struct mlxsw_sp_port *mlxsw_sp_port,
bool ingress)
{
const struct tc_action *a;
+ LIST_HEAD(actions);
int err;
if (!tc_single_action(cls->exts)) {
@@ -1156,7 +1129,8 @@ static int mlxsw_sp_port_add_cls_matchall(struct mlxsw_sp_port *mlxsw_sp_port,
return -ENOTSUPP;
}
- tc_for_each_action(a, cls->exts) {
+ tcf_exts_to_list(cls->exts, &actions);
+ list_for_each_entry(a, &actions, list) {
if (!is_tcf_mirred_mirror(a) || protocol != htons(ETH_P_ALL))
return -ENOTSUPP;
@@ -2076,6 +2050,18 @@ static int mlxsw_sp_port_ets_init(struct mlxsw_sp_port *mlxsw_sp_port)
return 0;
}
+static int mlxsw_sp_port_pvid_vport_create(struct mlxsw_sp_port *mlxsw_sp_port)
+{
+ mlxsw_sp_port->pvid = 1;
+
+ return mlxsw_sp_port_add_vid(mlxsw_sp_port->dev, 0, 1);
+}
+
+static int mlxsw_sp_port_pvid_vport_destroy(struct mlxsw_sp_port *mlxsw_sp_port)
+{
+ return mlxsw_sp_port_kill_vid(mlxsw_sp_port->dev, 0, 1);
+}
+
static int mlxsw_sp_port_create(struct mlxsw_sp *mlxsw_sp, u8 local_port,
bool split, u8 module, u8 width, u8 lane)
{
@@ -2191,7 +2177,15 @@ static int mlxsw_sp_port_create(struct mlxsw_sp *mlxsw_sp, u8 local_port,
goto err_port_dcb_init;
}
+ err = mlxsw_sp_port_pvid_vport_create(mlxsw_sp_port);
+ if (err) {
+ dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to create PVID vPort\n",
+ mlxsw_sp_port->local_port);
+ goto err_port_pvid_vport_create;
+ }
+
mlxsw_sp_port_switchdev_init(mlxsw_sp_port);
+ mlxsw_sp->ports[local_port] = mlxsw_sp_port;
err = register_netdev(dev);
if (err) {
dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to register netdev\n",
@@ -2208,18 +2202,15 @@ static int mlxsw_sp_port_create(struct mlxsw_sp *mlxsw_sp, u8 local_port,
goto err_core_port_init;
}
- err = mlxsw_sp_port_vlan_init(mlxsw_sp_port);
- if (err)
- goto err_port_vlan_init;
-
- mlxsw_sp->ports[local_port] = mlxsw_sp_port;
return 0;
-err_port_vlan_init:
- mlxsw_core_port_fini(&mlxsw_sp_port->core_port);
err_core_port_init:
unregister_netdev(dev);
err_register_netdev:
+ mlxsw_sp->ports[local_port] = NULL;
+ mlxsw_sp_port_switchdev_fini(mlxsw_sp_port);
+ mlxsw_sp_port_pvid_vport_destroy(mlxsw_sp_port);
+err_port_pvid_vport_create:
mlxsw_sp_port_dcb_fini(mlxsw_sp_port);
err_port_dcb_init:
err_port_ets_init:
@@ -2227,6 +2218,7 @@ err_port_buffers_init:
err_port_admin_status_set:
err_port_mtu_set:
err_port_speed_by_width_set:
+ mlxsw_sp_port_swid_set(mlxsw_sp_port, MLXSW_PORT_SWID_DISABLED_PORT);
err_port_swid_set:
err_port_system_port_mapping_set:
err_dev_addr_init:
@@ -2246,12 +2238,12 @@ static void mlxsw_sp_port_remove(struct mlxsw_sp *mlxsw_sp, u8 local_port)
if (!mlxsw_sp_port)
return;
- mlxsw_sp->ports[local_port] = NULL;
mlxsw_core_port_fini(&mlxsw_sp_port->core_port);
unregister_netdev(mlxsw_sp_port->dev); /* This calls ndo_stop */
- mlxsw_sp_port_dcb_fini(mlxsw_sp_port);
- mlxsw_sp_port_kill_vid(mlxsw_sp_port->dev, 0, 1);
+ mlxsw_sp->ports[local_port] = NULL;
mlxsw_sp_port_switchdev_fini(mlxsw_sp_port);
+ mlxsw_sp_port_pvid_vport_destroy(mlxsw_sp_port);
+ mlxsw_sp_port_dcb_fini(mlxsw_sp_port);
mlxsw_sp_port_swid_set(mlxsw_sp_port, MLXSW_PORT_SWID_DISABLED_PORT);
mlxsw_sp_port_module_unmap(mlxsw_sp, mlxsw_sp_port->local_port);
free_percpu(mlxsw_sp_port->pcpu_stats);
@@ -2663,6 +2655,26 @@ static const struct mlxsw_rx_listener mlxsw_sp_rx_listener[] = {
{
.func = mlxsw_sp_rx_listener_func,
.local_port = MLXSW_PORT_DONT_CARE,
+ .trap_id = MLXSW_TRAP_ID_MTUERROR,
+ },
+ {
+ .func = mlxsw_sp_rx_listener_func,
+ .local_port = MLXSW_PORT_DONT_CARE,
+ .trap_id = MLXSW_TRAP_ID_TTLERROR,
+ },
+ {
+ .func = mlxsw_sp_rx_listener_func,
+ .local_port = MLXSW_PORT_DONT_CARE,
+ .trap_id = MLXSW_TRAP_ID_LBERROR,
+ },
+ {
+ .func = mlxsw_sp_rx_listener_func,
+ .local_port = MLXSW_PORT_DONT_CARE,
+ .trap_id = MLXSW_TRAP_ID_OSPF,
+ },
+ {
+ .func = mlxsw_sp_rx_listener_func,
+ .local_port = MLXSW_PORT_DONT_CARE,
.trap_id = MLXSW_TRAP_ID_IP2ME,
},
{
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
index f69aa37d1521..ab3feb81bd43 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
@@ -536,8 +536,6 @@ int mlxsw_sp_port_vid_to_fid_set(struct mlxsw_sp_port *mlxsw_sp_port,
u16 vid);
int mlxsw_sp_port_vlan_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid_begin,
u16 vid_end, bool is_member, bool untagged);
-int mlxsw_sp_port_add_vid(struct net_device *dev, __be16 __always_unused proto,
- u16 vid);
int mlxsw_sp_vport_flood_set(struct mlxsw_sp_port *mlxsw_sp_vport, u16 fid,
bool set);
void mlxsw_sp_port_active_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port);
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c
index 074cdda7b6f3..237418a0e6e0 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c
@@ -330,7 +330,7 @@ static const struct mlxsw_sp_sb_cm mlxsw_sp_cpu_port_sb_cms[] = {
MLXSW_SP_CPU_PORT_SB_CM,
MLXSW_SP_CPU_PORT_SB_CM,
MLXSW_SP_CPU_PORT_SB_CM,
- MLXSW_SP_CPU_PORT_SB_CM,
+ MLXSW_SP_SB_CM(MLXSW_SP_BYTES_TO_CELLS(10000), 0, 0),
MLXSW_SP_CPU_PORT_SB_CM,
MLXSW_SP_CPU_PORT_SB_CM,
MLXSW_SP_CPU_PORT_SB_CM,
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
index 81418d629231..90bb93b037ec 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
@@ -1651,9 +1651,10 @@ static void mlxsw_sp_router_fib4_add_info_destroy(void const *data)
const struct mlxsw_sp_router_fib4_add_info *info = data;
struct mlxsw_sp_fib_entry *fib_entry = info->fib_entry;
struct mlxsw_sp *mlxsw_sp = info->mlxsw_sp;
+ struct mlxsw_sp_vr *vr = fib_entry->vr;
mlxsw_sp_fib_entry_destroy(fib_entry);
- mlxsw_sp_vr_put(mlxsw_sp, fib_entry->vr);
+ mlxsw_sp_vr_put(mlxsw_sp, vr);
kfree(info);
}
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
index a1ad5e6bdfa8..d1b59cdfacc1 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
@@ -450,6 +450,8 @@ void mlxsw_sp_fid_destroy(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_fid *f)
kfree(f);
+ mlxsw_sp_fid_map(mlxsw_sp, fid, false);
+
mlxsw_sp_fid_op(mlxsw_sp, fid, false);
}
@@ -997,13 +999,13 @@ static int mlxsw_sp_port_obj_add(struct net_device *dev,
}
static int __mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port,
- u16 vid_begin, u16 vid_end, bool init)
+ u16 vid_begin, u16 vid_end)
{
struct net_device *dev = mlxsw_sp_port->dev;
u16 vid, pvid;
int err;
- if (!init && !mlxsw_sp_port->bridged)
+ if (!mlxsw_sp_port->bridged)
return -EINVAL;
err = __mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end,
@@ -1014,9 +1016,6 @@ static int __mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port,
return err;
}
- if (init)
- goto out;
-
pvid = mlxsw_sp_port->pvid;
if (pvid >= vid_begin && pvid <= vid_end) {
err = mlxsw_sp_port_pvid_set(mlxsw_sp_port, 0);
@@ -1028,7 +1027,6 @@ static int __mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port,
mlxsw_sp_port_fid_leave(mlxsw_sp_port, vid_begin, vid_end);
-out:
/* Changing activity bits only if HW operation succeded */
for (vid = vid_begin; vid <= vid_end; vid++)
clear_bit(vid, mlxsw_sp_port->active_vlans);
@@ -1039,8 +1037,8 @@ out:
static int mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port,
const struct switchdev_obj_port_vlan *vlan)
{
- return __mlxsw_sp_port_vlans_del(mlxsw_sp_port,
- vlan->vid_begin, vlan->vid_end, false);
+ return __mlxsw_sp_port_vlans_del(mlxsw_sp_port, vlan->vid_begin,
+ vlan->vid_end);
}
void mlxsw_sp_port_active_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port)
@@ -1048,7 +1046,7 @@ void mlxsw_sp_port_active_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port)
u16 vid;
for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID)
- __mlxsw_sp_port_vlans_del(mlxsw_sp_port, vid, vid, false);
+ __mlxsw_sp_port_vlans_del(mlxsw_sp_port, vid, vid);
}
static int
@@ -1546,32 +1544,6 @@ void mlxsw_sp_switchdev_fini(struct mlxsw_sp *mlxsw_sp)
mlxsw_sp_fdb_fini(mlxsw_sp);
}
-int mlxsw_sp_port_vlan_init(struct mlxsw_sp_port *mlxsw_sp_port)
-{
- struct net_device *dev = mlxsw_sp_port->dev;
- int err;
-
- /* Allow only untagged packets to ingress and tag them internally
- * with VID 1.
- */
- mlxsw_sp_port->pvid = 1;
- err = __mlxsw_sp_port_vlans_del(mlxsw_sp_port, 0, VLAN_N_VID - 1,
- true);
- if (err) {
- netdev_err(dev, "Unable to init VLANs\n");
- return err;
- }
-
- /* Add implicit VLAN interface in the device, so that untagged
- * packets will be classified to the default vFID.
- */
- err = mlxsw_sp_port_add_vid(dev, 0, 1);
- if (err)
- netdev_err(dev, "Failed to configure default vFID\n");
-
- return err;
-}
-
void mlxsw_sp_port_switchdev_init(struct mlxsw_sp_port *mlxsw_sp_port)
{
mlxsw_sp_port->dev->switchdev_ops = &mlxsw_sp_port_switchdev_ops;
diff --git a/drivers/net/ethernet/mellanox/mlxsw/trap.h b/drivers/net/ethernet/mellanox/mlxsw/trap.h
index 470d7696e9fe..ed8e30186400 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/trap.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/trap.h
@@ -56,6 +56,10 @@ enum {
MLXSW_TRAP_ID_IGMP_V3_REPORT = 0x34,
MLXSW_TRAP_ID_ARPBC = 0x50,
MLXSW_TRAP_ID_ARPUC = 0x51,
+ MLXSW_TRAP_ID_MTUERROR = 0x52,
+ MLXSW_TRAP_ID_TTLERROR = 0x53,
+ MLXSW_TRAP_ID_LBERROR = 0x54,
+ MLXSW_TRAP_ID_OSPF = 0x55,
MLXSW_TRAP_ID_IP2ME = 0x5F,
MLXSW_TRAP_ID_RTR_INGRESS0 = 0x70,
MLXSW_TRAP_ID_HOST_MISS_IPV4 = 0x90,
diff --git a/drivers/net/ethernet/qlogic/qed/qed_dcbx.c b/drivers/net/ethernet/qlogic/qed/qed_dcbx.c
index d2f202eae6b2..b900dfbb57ff 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_dcbx.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_dcbx.c
@@ -52,40 +52,94 @@ static bool qed_dcbx_app_ethtype(u32 app_info_bitmap)
DCBX_APP_SF_ETHTYPE);
}
+static bool qed_dcbx_ieee_app_ethtype(u32 app_info_bitmap)
+{
+ u8 mfw_val = QED_MFW_GET_FIELD(app_info_bitmap, DCBX_APP_SF_IEEE);
+
+ /* Old MFW */
+ if (mfw_val == DCBX_APP_SF_IEEE_RESERVED)
+ return qed_dcbx_app_ethtype(app_info_bitmap);
+
+ return !!(mfw_val == DCBX_APP_SF_IEEE_ETHTYPE);
+}
+
static bool qed_dcbx_app_port(u32 app_info_bitmap)
{
return !!(QED_MFW_GET_FIELD(app_info_bitmap, DCBX_APP_SF) ==
DCBX_APP_SF_PORT);
}
-static bool qed_dcbx_default_tlv(u32 app_info_bitmap, u16 proto_id)
+static bool qed_dcbx_ieee_app_port(u32 app_info_bitmap, u8 type)
{
- return !!(qed_dcbx_app_ethtype(app_info_bitmap) &&
- proto_id == QED_ETH_TYPE_DEFAULT);
+ u8 mfw_val = QED_MFW_GET_FIELD(app_info_bitmap, DCBX_APP_SF_IEEE);
+
+ /* Old MFW */
+ if (mfw_val == DCBX_APP_SF_IEEE_RESERVED)
+ return qed_dcbx_app_port(app_info_bitmap);
+
+ return !!(mfw_val == type || mfw_val == DCBX_APP_SF_IEEE_TCP_UDP_PORT);
}
-static bool qed_dcbx_iscsi_tlv(u32 app_info_bitmap, u16 proto_id)
+static bool qed_dcbx_default_tlv(u32 app_info_bitmap, u16 proto_id, bool ieee)
{
- return !!(qed_dcbx_app_port(app_info_bitmap) &&
- proto_id == QED_TCP_PORT_ISCSI);
+ bool ethtype;
+
+ if (ieee)
+ ethtype = qed_dcbx_ieee_app_ethtype(app_info_bitmap);
+ else
+ ethtype = qed_dcbx_app_ethtype(app_info_bitmap);
+
+ return !!(ethtype && (proto_id == QED_ETH_TYPE_DEFAULT));
}
-static bool qed_dcbx_fcoe_tlv(u32 app_info_bitmap, u16 proto_id)
+static bool qed_dcbx_iscsi_tlv(u32 app_info_bitmap, u16 proto_id, bool ieee)
{
- return !!(qed_dcbx_app_ethtype(app_info_bitmap) &&
- proto_id == QED_ETH_TYPE_FCOE);
+ bool port;
+
+ if (ieee)
+ port = qed_dcbx_ieee_app_port(app_info_bitmap,
+ DCBX_APP_SF_IEEE_TCP_PORT);
+ else
+ port = qed_dcbx_app_port(app_info_bitmap);
+
+ return !!(port && (proto_id == QED_TCP_PORT_ISCSI));
}
-static bool qed_dcbx_roce_tlv(u32 app_info_bitmap, u16 proto_id)
+static bool qed_dcbx_fcoe_tlv(u32 app_info_bitmap, u16 proto_id, bool ieee)
{
- return !!(qed_dcbx_app_ethtype(app_info_bitmap) &&
- proto_id == QED_ETH_TYPE_ROCE);
+ bool ethtype;
+
+ if (ieee)
+ ethtype = qed_dcbx_ieee_app_ethtype(app_info_bitmap);
+ else
+ ethtype = qed_dcbx_app_ethtype(app_info_bitmap);
+
+ return !!(ethtype && (proto_id == QED_ETH_TYPE_FCOE));
}
-static bool qed_dcbx_roce_v2_tlv(u32 app_info_bitmap, u16 proto_id)
+static bool qed_dcbx_roce_tlv(u32 app_info_bitmap, u16 proto_id, bool ieee)
{
- return !!(qed_dcbx_app_port(app_info_bitmap) &&
- proto_id == QED_UDP_PORT_TYPE_ROCE_V2);
+ bool ethtype;
+
+ if (ieee)
+ ethtype = qed_dcbx_ieee_app_ethtype(app_info_bitmap);
+ else
+ ethtype = qed_dcbx_app_ethtype(app_info_bitmap);
+
+ return !!(ethtype && (proto_id == QED_ETH_TYPE_ROCE));
+}
+
+static bool qed_dcbx_roce_v2_tlv(u32 app_info_bitmap, u16 proto_id, bool ieee)
+{
+ bool port;
+
+ if (ieee)
+ port = qed_dcbx_ieee_app_port(app_info_bitmap,
+ DCBX_APP_SF_IEEE_UDP_PORT);
+ else
+ port = qed_dcbx_app_port(app_info_bitmap);
+
+ return !!(port && (proto_id == QED_UDP_PORT_TYPE_ROCE_V2));
}
static void
@@ -164,17 +218,17 @@ qed_dcbx_update_app_info(struct qed_dcbx_results *p_data,
static bool
qed_dcbx_get_app_protocol_type(struct qed_hwfn *p_hwfn,
u32 app_prio_bitmap,
- u16 id, enum dcbx_protocol_type *type)
+ u16 id, enum dcbx_protocol_type *type, bool ieee)
{
- if (qed_dcbx_fcoe_tlv(app_prio_bitmap, id)) {
+ if (qed_dcbx_fcoe_tlv(app_prio_bitmap, id, ieee)) {
*type = DCBX_PROTOCOL_FCOE;
- } else if (qed_dcbx_roce_tlv(app_prio_bitmap, id)) {
+ } else if (qed_dcbx_roce_tlv(app_prio_bitmap, id, ieee)) {
*type = DCBX_PROTOCOL_ROCE;
- } else if (qed_dcbx_iscsi_tlv(app_prio_bitmap, id)) {
+ } else if (qed_dcbx_iscsi_tlv(app_prio_bitmap, id, ieee)) {
*type = DCBX_PROTOCOL_ISCSI;
- } else if (qed_dcbx_default_tlv(app_prio_bitmap, id)) {
+ } else if (qed_dcbx_default_tlv(app_prio_bitmap, id, ieee)) {
*type = DCBX_PROTOCOL_ETH;
- } else if (qed_dcbx_roce_v2_tlv(app_prio_bitmap, id)) {
+ } else if (qed_dcbx_roce_v2_tlv(app_prio_bitmap, id, ieee)) {
*type = DCBX_PROTOCOL_ROCE_V2;
} else {
*type = DCBX_MAX_PROTOCOL_TYPE;
@@ -194,17 +248,18 @@ static int
qed_dcbx_process_tlv(struct qed_hwfn *p_hwfn,
struct qed_dcbx_results *p_data,
struct dcbx_app_priority_entry *p_tbl,
- u32 pri_tc_tbl, int count, bool dcbx_enabled)
+ u32 pri_tc_tbl, int count, u8 dcbx_version)
{
u8 tc, priority_map;
enum dcbx_protocol_type type;
+ bool enable, ieee;
u16 protocol_id;
int priority;
- bool enable;
int i;
DP_VERBOSE(p_hwfn, QED_MSG_DCB, "Num APP entries = %d\n", count);
+ ieee = (dcbx_version == DCBX_CONFIG_VERSION_IEEE);
/* Parse APP TLV */
for (i = 0; i < count; i++) {
protocol_id = QED_MFW_GET_FIELD(p_tbl[i].entry,
@@ -219,7 +274,7 @@ qed_dcbx_process_tlv(struct qed_hwfn *p_hwfn,
tc = QED_DCBX_PRIO2TC(pri_tc_tbl, priority);
if (qed_dcbx_get_app_protocol_type(p_hwfn, p_tbl[i].entry,
- protocol_id, &type)) {
+ protocol_id, &type, ieee)) {
/* ETH always have the enable bit reset, as it gets
* vlan information per packet. For other protocols,
* should be set according to the dcbx_enabled
@@ -275,15 +330,12 @@ static int qed_dcbx_process_mib_info(struct qed_hwfn *p_hwfn)
struct dcbx_ets_feature *p_ets;
struct qed_hw_info *p_info;
u32 pri_tc_tbl, flags;
- bool dcbx_enabled;
+ u8 dcbx_version;
int num_entries;
int rc = 0;
- /* If DCBx version is non zero, then negotiation was
- * successfuly performed
- */
flags = p_hwfn->p_dcbx_info->operational.flags;
- dcbx_enabled = !!QED_MFW_GET_FIELD(flags, DCBX_CONFIG_VERSION);
+ dcbx_version = QED_MFW_GET_FIELD(flags, DCBX_CONFIG_VERSION);
p_app = &p_hwfn->p_dcbx_info->operational.features.app;
p_tbl = p_app->app_pri_tbl;
@@ -295,13 +347,13 @@ static int qed_dcbx_process_mib_info(struct qed_hwfn *p_hwfn)
num_entries = QED_MFW_GET_FIELD(p_app->flags, DCBX_APP_NUM_ENTRIES);
rc = qed_dcbx_process_tlv(p_hwfn, &data, p_tbl, pri_tc_tbl,
- num_entries, dcbx_enabled);
+ num_entries, dcbx_version);
if (rc)
return rc;
p_info->num_tc = QED_MFW_GET_FIELD(p_ets->flags, DCBX_ETS_MAX_TCS);
data.pf_id = p_hwfn->rel_pf_id;
- data.dcbx_enabled = dcbx_enabled;
+ data.dcbx_enabled = !!dcbx_version;
qed_dcbx_dp_protocol(p_hwfn, &data);
@@ -400,7 +452,7 @@ static void
qed_dcbx_get_app_data(struct qed_hwfn *p_hwfn,
struct dcbx_app_priority_feature *p_app,
struct dcbx_app_priority_entry *p_tbl,
- struct qed_dcbx_params *p_params)
+ struct qed_dcbx_params *p_params, bool ieee)
{
struct qed_app_entry *entry;
u8 pri_map;
@@ -414,15 +466,46 @@ qed_dcbx_get_app_data(struct qed_hwfn *p_hwfn,
DCBX_APP_NUM_ENTRIES);
for (i = 0; i < DCBX_MAX_APP_PROTOCOL; i++) {
entry = &p_params->app_entry[i];
- entry->ethtype = !(QED_MFW_GET_FIELD(p_tbl[i].entry,
- DCBX_APP_SF));
+ if (ieee) {
+ u8 sf_ieee;
+ u32 val;
+
+ sf_ieee = QED_MFW_GET_FIELD(p_tbl[i].entry,
+ DCBX_APP_SF_IEEE);
+ switch (sf_ieee) {
+ case DCBX_APP_SF_IEEE_RESERVED:
+ /* Old MFW */
+ val = QED_MFW_GET_FIELD(p_tbl[i].entry,
+ DCBX_APP_SF);
+ entry->sf_ieee = val ?
+ QED_DCBX_SF_IEEE_TCP_UDP_PORT :
+ QED_DCBX_SF_IEEE_ETHTYPE;
+ break;
+ case DCBX_APP_SF_IEEE_ETHTYPE:
+ entry->sf_ieee = QED_DCBX_SF_IEEE_ETHTYPE;
+ break;
+ case DCBX_APP_SF_IEEE_TCP_PORT:
+ entry->sf_ieee = QED_DCBX_SF_IEEE_TCP_PORT;
+ break;
+ case DCBX_APP_SF_IEEE_UDP_PORT:
+ entry->sf_ieee = QED_DCBX_SF_IEEE_UDP_PORT;
+ break;
+ case DCBX_APP_SF_IEEE_TCP_UDP_PORT:
+ entry->sf_ieee = QED_DCBX_SF_IEEE_TCP_UDP_PORT;
+ break;
+ }
+ } else {
+ entry->ethtype = !(QED_MFW_GET_FIELD(p_tbl[i].entry,
+ DCBX_APP_SF));
+ }
+
pri_map = QED_MFW_GET_FIELD(p_tbl[i].entry, DCBX_APP_PRI_MAP);
entry->prio = ffs(pri_map) - 1;
entry->proto_id = QED_MFW_GET_FIELD(p_tbl[i].entry,
DCBX_APP_PROTOCOL_ID);
qed_dcbx_get_app_protocol_type(p_hwfn, p_tbl[i].entry,
entry->proto_id,
- &entry->proto_type);
+ &entry->proto_type, ieee);
}
DP_VERBOSE(p_hwfn, QED_MSG_DCB,
@@ -483,7 +566,7 @@ qed_dcbx_get_ets_data(struct qed_hwfn *p_hwfn,
bw_map[1] = be32_to_cpu(p_ets->tc_bw_tbl[1]);
tsa_map[0] = be32_to_cpu(p_ets->tc_tsa_tbl[0]);
tsa_map[1] = be32_to_cpu(p_ets->tc_tsa_tbl[1]);
- pri_map = be32_to_cpu(p_ets->pri_tc_tbl[0]);
+ pri_map = p_ets->pri_tc_tbl[0];
for (i = 0; i < QED_MAX_PFC_PRIORITIES; i++) {
p_params->ets_tc_bw_tbl[i] = ((u8 *)bw_map)[i];
p_params->ets_tc_tsa_tbl[i] = ((u8 *)tsa_map)[i];
@@ -500,9 +583,9 @@ qed_dcbx_get_common_params(struct qed_hwfn *p_hwfn,
struct dcbx_app_priority_feature *p_app,
struct dcbx_app_priority_entry *p_tbl,
struct dcbx_ets_feature *p_ets,
- u32 pfc, struct qed_dcbx_params *p_params)
+ u32 pfc, struct qed_dcbx_params *p_params, bool ieee)
{
- qed_dcbx_get_app_data(p_hwfn, p_app, p_tbl, p_params);
+ qed_dcbx_get_app_data(p_hwfn, p_app, p_tbl, p_params, ieee);
qed_dcbx_get_ets_data(p_hwfn, p_ets, p_params);
qed_dcbx_get_pfc_data(p_hwfn, pfc, p_params);
}
@@ -516,7 +599,7 @@ qed_dcbx_get_local_params(struct qed_hwfn *p_hwfn,
p_feat = &p_hwfn->p_dcbx_info->local_admin.features;
qed_dcbx_get_common_params(p_hwfn, &p_feat->app,
p_feat->app.app_pri_tbl, &p_feat->ets,
- p_feat->pfc, &params->local.params);
+ p_feat->pfc, &params->local.params, false);
params->local.valid = true;
}
@@ -529,7 +612,7 @@ qed_dcbx_get_remote_params(struct qed_hwfn *p_hwfn,
p_feat = &p_hwfn->p_dcbx_info->remote.features;
qed_dcbx_get_common_params(p_hwfn, &p_feat->app,
p_feat->app.app_pri_tbl, &p_feat->ets,
- p_feat->pfc, &params->remote.params);
+ p_feat->pfc, &params->remote.params, false);
params->remote.valid = true;
}
@@ -574,7 +657,8 @@ qed_dcbx_get_operational_params(struct qed_hwfn *p_hwfn,
qed_dcbx_get_common_params(p_hwfn, &p_feat->app,
p_feat->app.app_pri_tbl, &p_feat->ets,
- p_feat->pfc, &params->operational.params);
+ p_feat->pfc, &params->operational.params,
+ p_operational->ieee);
qed_dcbx_get_priority_info(p_hwfn, &p_operational->app_prio, p_results);
err = QED_MFW_GET_FIELD(p_feat->app.flags, DCBX_APP_ERROR);
p_operational->err = err;
@@ -944,7 +1028,6 @@ qed_dcbx_set_ets_data(struct qed_hwfn *p_hwfn,
val = (((u32)p_params->ets_pri_tc_tbl[i]) << ((7 - i) * 4));
p_ets->pri_tc_tbl[0] |= val;
}
- p_ets->pri_tc_tbl[0] = cpu_to_be32(p_ets->pri_tc_tbl[0]);
for (i = 0; i < 2; i++) {
p_ets->tc_bw_tbl[i] = cpu_to_be32(p_ets->tc_bw_tbl[i]);
p_ets->tc_tsa_tbl[i] = cpu_to_be32(p_ets->tc_tsa_tbl[i]);
@@ -954,7 +1037,7 @@ qed_dcbx_set_ets_data(struct qed_hwfn *p_hwfn,
static void
qed_dcbx_set_app_data(struct qed_hwfn *p_hwfn,
struct dcbx_app_priority_feature *p_app,
- struct qed_dcbx_params *p_params)
+ struct qed_dcbx_params *p_params, bool ieee)
{
u32 *entry;
int i;
@@ -975,12 +1058,36 @@ qed_dcbx_set_app_data(struct qed_hwfn *p_hwfn,
for (i = 0; i < DCBX_MAX_APP_PROTOCOL; i++) {
entry = &p_app->app_pri_tbl[i].entry;
- *entry &= ~DCBX_APP_SF_MASK;
- if (p_params->app_entry[i].ethtype)
- *entry |= ((u32)DCBX_APP_SF_ETHTYPE <<
- DCBX_APP_SF_SHIFT);
- else
- *entry |= ((u32)DCBX_APP_SF_PORT << DCBX_APP_SF_SHIFT);
+ if (ieee) {
+ *entry &= ~DCBX_APP_SF_IEEE_MASK;
+ switch (p_params->app_entry[i].sf_ieee) {
+ case QED_DCBX_SF_IEEE_ETHTYPE:
+ *entry |= ((u32)DCBX_APP_SF_IEEE_ETHTYPE <<
+ DCBX_APP_SF_IEEE_SHIFT);
+ break;
+ case QED_DCBX_SF_IEEE_TCP_PORT:
+ *entry |= ((u32)DCBX_APP_SF_IEEE_TCP_PORT <<
+ DCBX_APP_SF_IEEE_SHIFT);
+ break;
+ case QED_DCBX_SF_IEEE_UDP_PORT:
+ *entry |= ((u32)DCBX_APP_SF_IEEE_UDP_PORT <<
+ DCBX_APP_SF_IEEE_SHIFT);
+ break;
+ case QED_DCBX_SF_IEEE_TCP_UDP_PORT:
+ *entry |= ((u32)DCBX_APP_SF_IEEE_TCP_UDP_PORT <<
+ DCBX_APP_SF_IEEE_SHIFT);
+ break;
+ }
+ } else {
+ *entry &= ~DCBX_APP_SF_MASK;
+ if (p_params->app_entry[i].ethtype)
+ *entry |= ((u32)DCBX_APP_SF_ETHTYPE <<
+ DCBX_APP_SF_SHIFT);
+ else
+ *entry |= ((u32)DCBX_APP_SF_PORT <<
+ DCBX_APP_SF_SHIFT);
+ }
+
*entry &= ~DCBX_APP_PROTOCOL_ID_MASK;
*entry |= ((u32)p_params->app_entry[i].proto_id <<
DCBX_APP_PROTOCOL_ID_SHIFT);
@@ -995,15 +1102,19 @@ qed_dcbx_set_local_params(struct qed_hwfn *p_hwfn,
struct dcbx_local_params *local_admin,
struct qed_dcbx_set *params)
{
+ bool ieee = false;
+
local_admin->flags = 0;
memcpy(&local_admin->features,
&p_hwfn->p_dcbx_info->operational.features,
sizeof(local_admin->features));
- if (params->enabled)
+ if (params->enabled) {
local_admin->config = params->ver_num;
- else
+ ieee = !!(params->ver_num & DCBX_CONFIG_VERSION_IEEE);
+ } else {
local_admin->config = DCBX_CONFIG_VERSION_DISABLED;
+ }
if (params->override_flags & QED_DCBX_OVERRIDE_PFC_CFG)
qed_dcbx_set_pfc_data(p_hwfn, &local_admin->features.pfc,
@@ -1015,7 +1126,7 @@ qed_dcbx_set_local_params(struct qed_hwfn *p_hwfn,
if (params->override_flags & QED_DCBX_OVERRIDE_APP_CFG)
qed_dcbx_set_app_data(p_hwfn, &local_admin->features.app,
- &params->config.params);
+ &params->config.params, ieee);
}
int qed_dcbx_config_params(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt,
@@ -1596,8 +1707,10 @@ static int qed_dcbnl_setapp(struct qed_dev *cdev,
if ((entry->ethtype == ethtype) && (entry->proto_id == idval))
break;
/* First empty slot */
- if (!entry->proto_id)
+ if (!entry->proto_id) {
+ dcbx_set.config.params.num_app_entries++;
break;
+ }
}
if (i == QED_DCBX_MAX_APP_PROTOCOL) {
@@ -2118,8 +2231,10 @@ int qed_dcbnl_ieee_setapp(struct qed_dev *cdev, struct dcb_app *app)
(entry->proto_id == app->protocol))
break;
/* First empty slot */
- if (!entry->proto_id)
+ if (!entry->proto_id) {
+ dcbx_set.config.params.num_app_entries++;
break;
+ }
}
if (i == QED_DCBX_MAX_APP_PROTOCOL) {
diff --git a/drivers/net/ethernet/qlogic/qed/qed_hsi.h b/drivers/net/ethernet/qlogic/qed/qed_hsi.h
index 592784019994..6f9d3b831a2a 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_hsi.h
+++ b/drivers/net/ethernet/qlogic/qed/qed_hsi.h
@@ -6850,6 +6850,14 @@ struct dcbx_app_priority_entry {
#define DCBX_APP_SF_SHIFT 8
#define DCBX_APP_SF_ETHTYPE 0
#define DCBX_APP_SF_PORT 1
+#define DCBX_APP_SF_IEEE_MASK 0x0000f000
+#define DCBX_APP_SF_IEEE_SHIFT 12
+#define DCBX_APP_SF_IEEE_RESERVED 0
+#define DCBX_APP_SF_IEEE_ETHTYPE 1
+#define DCBX_APP_SF_IEEE_TCP_PORT 2
+#define DCBX_APP_SF_IEEE_UDP_PORT 3
+#define DCBX_APP_SF_IEEE_TCP_UDP_PORT 4
+
#define DCBX_APP_PROTOCOL_ID_MASK 0xffff0000
#define DCBX_APP_PROTOCOL_ID_SHIFT 16
};
diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c
index b4d3b410c32a..421ebdaf1208 100644
--- a/drivers/net/ethernet/ti/cpsw.c
+++ b/drivers/net/ethernet/ti/cpsw.c
@@ -730,6 +730,7 @@ static void cpsw_rx_handler(void *token, int len, int status)
netif_receive_skb(skb);
ndev->stats.rx_bytes += len;
ndev->stats.rx_packets++;
+ kmemleak_not_leak(new_skb);
} else {
ndev->stats.rx_dropped++;
new_skb = skb;
@@ -1307,6 +1308,7 @@ static int cpsw_ndo_open(struct net_device *ndev)
kfree_skb(skb);
goto err_cleanup;
}
+ kmemleak_not_leak(skb);
}
/* continue even if we didn't manage to submit all
* receive descs
diff --git a/drivers/net/hyperv/hyperv_net.h b/drivers/net/hyperv/hyperv_net.h
index c1403fda874c..fa7b1e42508b 100644
--- a/drivers/net/hyperv/hyperv_net.h
+++ b/drivers/net/hyperv/hyperv_net.h
@@ -645,12 +645,6 @@ struct netvsc_reconfig {
u32 event;
};
-struct garp_wrk {
- struct work_struct dwrk;
- struct net_device *netdev;
- struct netvsc_device *netvsc_dev;
-};
-
/* The context of the netvsc device */
struct net_device_context {
/* point back to our device context */
@@ -668,7 +662,6 @@ struct net_device_context {
struct work_struct work;
u32 msg_enable; /* debug level */
- struct garp_wrk gwrk;
struct netvsc_stats __percpu *tx_stats;
struct netvsc_stats __percpu *rx_stats;
@@ -679,6 +672,15 @@ struct net_device_context {
/* the device is going away */
bool start_remove;
+
+ /* State to manage the associated VF interface. */
+ struct net_device *vf_netdev;
+ bool vf_inject;
+ atomic_t vf_use_cnt;
+ /* 1: allocated, serial number is valid. 0: not allocated */
+ u32 vf_alloc;
+ /* Serial number of the VF to team with */
+ u32 vf_serial;
};
/* Per netvsc device */
@@ -734,15 +736,7 @@ struct netvsc_device {
u32 max_pkt; /* max number of pkt in one send, e.g. 8 */
u32 pkt_align; /* alignment bytes, e.g. 8 */
- /* 1: allocated, serial number is valid. 0: not allocated */
- u32 vf_alloc;
- /* Serial number of the VF to team with */
- u32 vf_serial;
atomic_t open_cnt;
- /* State to manage the associated VF interface. */
- bool vf_inject;
- struct net_device *vf_netdev;
- atomic_t vf_use_cnt;
};
static inline struct netvsc_device *
diff --git a/drivers/net/hyperv/netvsc.c b/drivers/net/hyperv/netvsc.c
index 36a7994f2811..8078bc209cac 100644
--- a/drivers/net/hyperv/netvsc.c
+++ b/drivers/net/hyperv/netvsc.c
@@ -77,13 +77,9 @@ static struct netvsc_device *alloc_net_device(void)
init_waitqueue_head(&net_device->wait_drain);
net_device->destroy = false;
atomic_set(&net_device->open_cnt, 0);
- atomic_set(&net_device->vf_use_cnt, 0);
net_device->max_pkt = RNDIS_MAX_PKT_DEFAULT;
net_device->pkt_align = RNDIS_PKT_ALIGN_DEFAULT;
- net_device->vf_netdev = NULL;
- net_device->vf_inject = false;
-
return net_device;
}
@@ -1110,16 +1106,16 @@ static void netvsc_send_table(struct hv_device *hdev,
nvscdev->send_table[i] = tab[i];
}
-static void netvsc_send_vf(struct netvsc_device *nvdev,
+static void netvsc_send_vf(struct net_device_context *net_device_ctx,
struct nvsp_message *nvmsg)
{
- nvdev->vf_alloc = nvmsg->msg.v4_msg.vf_assoc.allocated;
- nvdev->vf_serial = nvmsg->msg.v4_msg.vf_assoc.serial;
+ net_device_ctx->vf_alloc = nvmsg->msg.v4_msg.vf_assoc.allocated;
+ net_device_ctx->vf_serial = nvmsg->msg.v4_msg.vf_assoc.serial;
}
static inline void netvsc_receive_inband(struct hv_device *hdev,
- struct netvsc_device *nvdev,
- struct nvsp_message *nvmsg)
+ struct net_device_context *net_device_ctx,
+ struct nvsp_message *nvmsg)
{
switch (nvmsg->hdr.msg_type) {
case NVSP_MSG5_TYPE_SEND_INDIRECTION_TABLE:
@@ -1127,7 +1123,7 @@ static inline void netvsc_receive_inband(struct hv_device *hdev,
break;
case NVSP_MSG4_TYPE_SEND_VF_ASSOCIATION:
- netvsc_send_vf(nvdev, nvmsg);
+ netvsc_send_vf(net_device_ctx, nvmsg);
break;
}
}
@@ -1140,6 +1136,7 @@ static void netvsc_process_raw_pkt(struct hv_device *device,
struct vmpacket_descriptor *desc)
{
struct nvsp_message *nvmsg;
+ struct net_device_context *net_device_ctx = netdev_priv(ndev);
nvmsg = (struct nvsp_message *)((unsigned long)
desc + (desc->offset8 << 3));
@@ -1154,7 +1151,7 @@ static void netvsc_process_raw_pkt(struct hv_device *device,
break;
case VM_PKT_DATA_INBAND:
- netvsc_receive_inband(device, net_device, nvmsg);
+ netvsc_receive_inband(device, net_device_ctx, nvmsg);
break;
default:
diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c
index 82c8f6d47283..eb2c122ec10a 100644
--- a/drivers/net/hyperv/netvsc_drv.c
+++ b/drivers/net/hyperv/netvsc_drv.c
@@ -671,20 +671,19 @@ int netvsc_recv_callback(struct hv_device *device_obj,
struct sk_buff *skb;
struct sk_buff *vf_skb;
struct netvsc_stats *rx_stats;
- struct netvsc_device *netvsc_dev = net_device_ctx->nvdev;
u32 bytes_recvd = packet->total_data_buflen;
int ret = 0;
if (!net || net->reg_state != NETREG_REGISTERED)
return NVSP_STAT_FAIL;
- if (READ_ONCE(netvsc_dev->vf_inject)) {
- atomic_inc(&netvsc_dev->vf_use_cnt);
- if (!READ_ONCE(netvsc_dev->vf_inject)) {
+ if (READ_ONCE(net_device_ctx->vf_inject)) {
+ atomic_inc(&net_device_ctx->vf_use_cnt);
+ if (!READ_ONCE(net_device_ctx->vf_inject)) {
/*
* We raced; just move on.
*/
- atomic_dec(&netvsc_dev->vf_use_cnt);
+ atomic_dec(&net_device_ctx->vf_use_cnt);
goto vf_injection_done;
}
@@ -696,17 +695,19 @@ int netvsc_recv_callback(struct hv_device *device_obj,
* the host). Deliver these via the VF interface
* in the guest.
*/
- vf_skb = netvsc_alloc_recv_skb(netvsc_dev->vf_netdev, packet,
- csum_info, *data, vlan_tci);
+ vf_skb = netvsc_alloc_recv_skb(net_device_ctx->vf_netdev,
+ packet, csum_info, *data,
+ vlan_tci);
if (vf_skb != NULL) {
- ++netvsc_dev->vf_netdev->stats.rx_packets;
- netvsc_dev->vf_netdev->stats.rx_bytes += bytes_recvd;
+ ++net_device_ctx->vf_netdev->stats.rx_packets;
+ net_device_ctx->vf_netdev->stats.rx_bytes +=
+ bytes_recvd;
netif_receive_skb(vf_skb);
} else {
++net->stats.rx_dropped;
ret = NVSP_STAT_FAIL;
}
- atomic_dec(&netvsc_dev->vf_use_cnt);
+ atomic_dec(&net_device_ctx->vf_use_cnt);
return ret;
}
@@ -1163,17 +1164,6 @@ static void netvsc_free_netdev(struct net_device *netdev)
free_netdev(netdev);
}
-static void netvsc_notify_peers(struct work_struct *wrk)
-{
- struct garp_wrk *gwrk;
-
- gwrk = container_of(wrk, struct garp_wrk, dwrk);
-
- netdev_notify_peers(gwrk->netdev);
-
- atomic_dec(&gwrk->netvsc_dev->vf_use_cnt);
-}
-
static struct net_device *get_netvsc_net_device(char *mac)
{
struct net_device *dev, *found = NULL;
@@ -1216,7 +1206,7 @@ static int netvsc_register_vf(struct net_device *vf_netdev)
net_device_ctx = netdev_priv(ndev);
netvsc_dev = net_device_ctx->nvdev;
- if (netvsc_dev == NULL)
+ if (!netvsc_dev || net_device_ctx->vf_netdev)
return NOTIFY_DONE;
netdev_info(ndev, "VF registering: %s\n", vf_netdev->name);
@@ -1224,10 +1214,23 @@ static int netvsc_register_vf(struct net_device *vf_netdev)
* Take a reference on the module.
*/
try_module_get(THIS_MODULE);
- netvsc_dev->vf_netdev = vf_netdev;
+ net_device_ctx->vf_netdev = vf_netdev;
return NOTIFY_OK;
}
+static void netvsc_inject_enable(struct net_device_context *net_device_ctx)
+{
+ net_device_ctx->vf_inject = true;
+}
+
+static void netvsc_inject_disable(struct net_device_context *net_device_ctx)
+{
+ net_device_ctx->vf_inject = false;
+
+ /* Wait for currently active users to drain out. */
+ while (atomic_read(&net_device_ctx->vf_use_cnt) != 0)
+ udelay(50);
+}
static int netvsc_vf_up(struct net_device *vf_netdev)
{
@@ -1246,11 +1249,11 @@ static int netvsc_vf_up(struct net_device *vf_netdev)
net_device_ctx = netdev_priv(ndev);
netvsc_dev = net_device_ctx->nvdev;
- if ((netvsc_dev == NULL) || (netvsc_dev->vf_netdev == NULL))
+ if (!netvsc_dev || !net_device_ctx->vf_netdev)
return NOTIFY_DONE;
netdev_info(ndev, "VF up: %s\n", vf_netdev->name);
- netvsc_dev->vf_inject = true;
+ netvsc_inject_enable(net_device_ctx);
/*
* Open the device before switching data path.
@@ -1265,15 +1268,8 @@ static int netvsc_vf_up(struct net_device *vf_netdev)
netif_carrier_off(ndev);
- /*
- * Now notify peers. We are scheduling work to
- * notify peers; take a reference to prevent
- * the VF interface from vanishing.
- */
- atomic_inc(&netvsc_dev->vf_use_cnt);
- net_device_ctx->gwrk.netdev = vf_netdev;
- net_device_ctx->gwrk.netvsc_dev = netvsc_dev;
- schedule_work(&net_device_ctx->gwrk.dwrk);
+ /* Now notify peers through VF device. */
+ call_netdevice_notifiers(NETDEV_NOTIFY_PEERS, vf_netdev);
return NOTIFY_OK;
}
@@ -1296,29 +1292,18 @@ static int netvsc_vf_down(struct net_device *vf_netdev)
net_device_ctx = netdev_priv(ndev);
netvsc_dev = net_device_ctx->nvdev;
- if ((netvsc_dev == NULL) || (netvsc_dev->vf_netdev == NULL))
+ if (!netvsc_dev || !net_device_ctx->vf_netdev)
return NOTIFY_DONE;
netdev_info(ndev, "VF down: %s\n", vf_netdev->name);
- netvsc_dev->vf_inject = false;
- /*
- * Wait for currently active users to
- * drain out.
- */
-
- while (atomic_read(&netvsc_dev->vf_use_cnt) != 0)
- udelay(50);
+ netvsc_inject_disable(net_device_ctx);
netvsc_switch_datapath(ndev, false);
netdev_info(ndev, "Data path switched from VF: %s\n", vf_netdev->name);
rndis_filter_close(netvsc_dev);
netif_carrier_on(ndev);
- /*
- * Notify peers.
- */
- atomic_inc(&netvsc_dev->vf_use_cnt);
- net_device_ctx->gwrk.netdev = ndev;
- net_device_ctx->gwrk.netvsc_dev = netvsc_dev;
- schedule_work(&net_device_ctx->gwrk.dwrk);
+
+ /* Now notify peers through netvsc device. */
+ call_netdevice_notifiers(NETDEV_NOTIFY_PEERS, ndev);
return NOTIFY_OK;
}
@@ -1340,11 +1325,11 @@ static int netvsc_unregister_vf(struct net_device *vf_netdev)
net_device_ctx = netdev_priv(ndev);
netvsc_dev = net_device_ctx->nvdev;
- if (netvsc_dev == NULL)
+ if (!netvsc_dev || !net_device_ctx->vf_netdev)
return NOTIFY_DONE;
netdev_info(ndev, "VF unregistering: %s\n", vf_netdev->name);
-
- netvsc_dev->vf_netdev = NULL;
+ netvsc_inject_disable(net_device_ctx);
+ net_device_ctx->vf_netdev = NULL;
module_put(THIS_MODULE);
return NOTIFY_OK;
}
@@ -1392,11 +1377,14 @@ static int netvsc_probe(struct hv_device *dev,
INIT_DELAYED_WORK(&net_device_ctx->dwork, netvsc_link_change);
INIT_WORK(&net_device_ctx->work, do_set_multicast);
- INIT_WORK(&net_device_ctx->gwrk.dwrk, netvsc_notify_peers);
spin_lock_init(&net_device_ctx->lock);
INIT_LIST_HEAD(&net_device_ctx->reconfig_events);
+ atomic_set(&net_device_ctx->vf_use_cnt, 0);
+ net_device_ctx->vf_netdev = NULL;
+ net_device_ctx->vf_inject = false;
+
net->netdev_ops = &device_ops;
net->hw_features = NETVSC_HW_FEATURES;
@@ -1507,8 +1495,13 @@ static int netvsc_netdev_event(struct notifier_block *this,
{
struct net_device *event_dev = netdev_notifier_info_to_dev(ptr);
- /* Avoid Vlan, Bonding dev with same MAC registering as VF */
- if (event_dev->priv_flags & (IFF_802_1Q_VLAN | IFF_BONDING))
+ /* Avoid Vlan dev with same MAC registering as VF */
+ if (event_dev->priv_flags & IFF_802_1Q_VLAN)
+ return NOTIFY_DONE;
+
+ /* Avoid Bonding master dev with same MAC registering as VF */
+ if (event_dev->priv_flags & IFF_BONDING &&
+ event_dev->flags & IFF_MASTER)
return NOTIFY_DONE;
switch (event) {
diff --git a/drivers/net/macsec.c b/drivers/net/macsec.c
index d13e6e15d7b5..351e701eb043 100644
--- a/drivers/net/macsec.c
+++ b/drivers/net/macsec.c
@@ -270,6 +270,7 @@ struct macsec_dev {
struct pcpu_secy_stats __percpu *stats;
struct list_head secys;
struct gro_cells gro_cells;
+ unsigned int nest_level;
};
/**
@@ -2699,6 +2700,8 @@ static netdev_tx_t macsec_start_xmit(struct sk_buff *skb,
#define MACSEC_FEATURES \
(NETIF_F_SG | NETIF_F_HIGHDMA | NETIF_F_FRAGLIST)
+static struct lock_class_key macsec_netdev_addr_lock_key;
+
static int macsec_dev_init(struct net_device *dev)
{
struct macsec_dev *macsec = macsec_priv(dev);
@@ -2910,6 +2913,13 @@ static int macsec_get_iflink(const struct net_device *dev)
return macsec_priv(dev)->real_dev->ifindex;
}
+
+static int macsec_get_nest_level(struct net_device *dev)
+{
+ return macsec_priv(dev)->nest_level;
+}
+
+
static const struct net_device_ops macsec_netdev_ops = {
.ndo_init = macsec_dev_init,
.ndo_uninit = macsec_dev_uninit,
@@ -2923,6 +2933,7 @@ static const struct net_device_ops macsec_netdev_ops = {
.ndo_start_xmit = macsec_start_xmit,
.ndo_get_stats64 = macsec_get_stats64,
.ndo_get_iflink = macsec_get_iflink,
+ .ndo_get_lock_subclass = macsec_get_nest_level,
};
static const struct device_type macsec_type = {
@@ -3047,22 +3058,31 @@ static void macsec_del_dev(struct macsec_dev *macsec)
}
}
+static void macsec_common_dellink(struct net_device *dev, struct list_head *head)
+{
+ struct macsec_dev *macsec = macsec_priv(dev);
+ struct net_device *real_dev = macsec->real_dev;
+
+ unregister_netdevice_queue(dev, head);
+ list_del_rcu(&macsec->secys);
+ macsec_del_dev(macsec);
+ netdev_upper_dev_unlink(real_dev, dev);
+
+ macsec_generation++;
+}
+
static void macsec_dellink(struct net_device *dev, struct list_head *head)
{
struct macsec_dev *macsec = macsec_priv(dev);
struct net_device *real_dev = macsec->real_dev;
struct macsec_rxh_data *rxd = macsec_data_rtnl(real_dev);
- macsec_generation++;
+ macsec_common_dellink(dev, head);
- unregister_netdevice_queue(dev, head);
- list_del_rcu(&macsec->secys);
if (list_empty(&rxd->secys)) {
netdev_rx_handler_unregister(real_dev);
kfree(rxd);
}
-
- macsec_del_dev(macsec);
}
static int register_macsec_dev(struct net_device *real_dev,
@@ -3181,6 +3201,16 @@ static int macsec_newlink(struct net *net, struct net_device *dev,
dev_hold(real_dev);
+ macsec->nest_level = dev_get_nest_level(real_dev) + 1;
+ netdev_lockdep_set_classes(dev);
+ lockdep_set_class_and_subclass(&dev->addr_list_lock,
+ &macsec_netdev_addr_lock_key,
+ macsec_get_nest_level(dev));
+
+ err = netdev_upper_dev_link(real_dev, dev);
+ if (err < 0)
+ goto unregister;
+
/* need to be already registered so that ->init has run and
* the MAC addr is set
*/
@@ -3193,12 +3223,12 @@ static int macsec_newlink(struct net *net, struct net_device *dev,
if (rx_handler && sci_exists(real_dev, sci)) {
err = -EBUSY;
- goto unregister;
+ goto unlink;
}
err = macsec_add_dev(dev, sci, icv_len);
if (err)
- goto unregister;
+ goto unlink;
if (data)
macsec_changelink_common(dev, data);
@@ -3213,6 +3243,8 @@ static int macsec_newlink(struct net *net, struct net_device *dev,
del_dev:
macsec_del_dev(macsec);
+unlink:
+ netdev_upper_dev_unlink(real_dev, dev);
unregister:
unregister_netdevice(dev);
return err;
@@ -3382,8 +3414,12 @@ static int macsec_notify(struct notifier_block *this, unsigned long event,
rxd = macsec_data_rtnl(real_dev);
list_for_each_entry_safe(m, n, &rxd->secys, secys) {
- macsec_dellink(m->secy.netdev, &head);
+ macsec_common_dellink(m->secy.netdev, &head);
}
+
+ netdev_rx_handler_unregister(real_dev);
+ kfree(rxd);
+
unregister_netdevice_many(&head);
break;
}
diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c
index cd9b53834bf6..3234fcdea317 100644
--- a/drivers/net/macvlan.c
+++ b/drivers/net/macvlan.c
@@ -1315,7 +1315,7 @@ int macvlan_common_newlink(struct net *src_net, struct net_device *dev,
vlan->dev = dev;
vlan->port = port;
vlan->set_features = MACVLAN_FEATURES;
- vlan->nest_level = dev_get_nest_level(lowerdev, netif_is_macvlan) + 1;
+ vlan->nest_level = dev_get_nest_level(lowerdev) + 1;
vlan->mode = MACVLAN_MODE_VEPA;
if (data && data[IFLA_MACVLAN_MODE])
diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c
index a38c0dac514b..070e3290aa6e 100644
--- a/drivers/net/macvtap.c
+++ b/drivers/net/macvtap.c
@@ -275,7 +275,6 @@ static void macvtap_put_queue(struct macvtap_queue *q)
rtnl_unlock();
synchronize_rcu();
- skb_array_cleanup(&q->skb_array);
sock_put(&q->sk);
}
@@ -533,10 +532,8 @@ static void macvtap_sock_write_space(struct sock *sk)
static void macvtap_sock_destruct(struct sock *sk)
{
struct macvtap_queue *q = container_of(sk, struct macvtap_queue, sk);
- struct sk_buff *skb;
- while ((skb = skb_array_consume(&q->skb_array)) != NULL)
- kfree_skb(skb);
+ skb_array_cleanup(&q->skb_array);
}
static int macvtap_open(struct inode *inode, struct file *file)
diff --git a/drivers/net/phy/micrel.c b/drivers/net/phy/micrel.c
index 1882d9828c99..053e87905b94 100644
--- a/drivers/net/phy/micrel.c
+++ b/drivers/net/phy/micrel.c
@@ -677,17 +677,28 @@ static void kszphy_get_stats(struct phy_device *phydev,
data[i] = kszphy_get_stat(phydev, i);
}
-static int kszphy_resume(struct phy_device *phydev)
+static int kszphy_suspend(struct phy_device *phydev)
{
- int value;
+ /* Disable PHY Interrupts */
+ if (phy_interrupt_is_valid(phydev)) {
+ phydev->interrupts = PHY_INTERRUPT_DISABLED;
+ if (phydev->drv->config_intr)
+ phydev->drv->config_intr(phydev);
+ }
- mutex_lock(&phydev->lock);
+ return genphy_suspend(phydev);
+}
- value = phy_read(phydev, MII_BMCR);
- phy_write(phydev, MII_BMCR, value & ~BMCR_PDOWN);
+static int kszphy_resume(struct phy_device *phydev)
+{
+ genphy_resume(phydev);
- kszphy_config_intr(phydev);
- mutex_unlock(&phydev->lock);
+ /* Enable PHY Interrupts */
+ if (phy_interrupt_is_valid(phydev)) {
+ phydev->interrupts = PHY_INTERRUPT_ENABLED;
+ if (phydev->drv->config_intr)
+ phydev->drv->config_intr(phydev);
+ }
return 0;
}
@@ -900,7 +911,7 @@ static struct phy_driver ksphy_driver[] = {
.get_sset_count = kszphy_get_sset_count,
.get_strings = kszphy_get_strings,
.get_stats = kszphy_get_stats,
- .suspend = genphy_suspend,
+ .suspend = kszphy_suspend,
.resume = kszphy_resume,
}, {
.phy_id = PHY_ID_KSZ8061,
diff --git a/drivers/net/wireless/ath/ath10k/debug.c b/drivers/net/wireless/ath/ath10k/debug.c
index 355e1ae665f9..8f0fd41dfd4b 100644
--- a/drivers/net/wireless/ath/ath10k/debug.c
+++ b/drivers/net/wireless/ath/ath10k/debug.c
@@ -139,11 +139,11 @@ void ath10k_debug_print_hwfw_info(struct ath10k *ar)
ar->id.subsystem_vendor, ar->id.subsystem_device);
ath10k_info(ar, "kconfig debug %d debugfs %d tracing %d dfs %d testmode %d\n",
- config_enabled(CONFIG_ATH10K_DEBUG),
- config_enabled(CONFIG_ATH10K_DEBUGFS),
- config_enabled(CONFIG_ATH10K_TRACING),
- config_enabled(CONFIG_ATH10K_DFS_CERTIFIED),
- config_enabled(CONFIG_NL80211_TESTMODE));
+ IS_ENABLED(CONFIG_ATH10K_DEBUG),
+ IS_ENABLED(CONFIG_ATH10K_DEBUGFS),
+ IS_ENABLED(CONFIG_ATH10K_TRACING),
+ IS_ENABLED(CONFIG_ATH10K_DFS_CERTIFIED),
+ IS_ENABLED(CONFIG_NL80211_TESTMODE));
firmware = ar->normal_mode_fw.fw_file.firmware;
if (firmware)
@@ -2424,7 +2424,7 @@ int ath10k_debug_register(struct ath10k *ar)
debugfs_create_file("nf_cal_period", S_IRUSR | S_IWUSR,
ar->debug.debugfs_phy, ar, &fops_nf_cal_period);
- if (config_enabled(CONFIG_ATH10K_DFS_CERTIFIED)) {
+ if (IS_ENABLED(CONFIG_ATH10K_DFS_CERTIFIED)) {
debugfs_create_file("dfs_simulate_radar", S_IWUSR,
ar->debug.debugfs_phy, ar,
&fops_simulate_radar);
diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c
index fb8e38df9446..0bbd0a00edcc 100644
--- a/drivers/net/wireless/ath/ath10k/mac.c
+++ b/drivers/net/wireless/ath/ath10k/mac.c
@@ -3039,7 +3039,7 @@ static void ath10k_regd_update(struct ath10k *ar)
regpair = ar->ath_common.regulatory.regpair;
- if (config_enabled(CONFIG_ATH10K_DFS_CERTIFIED) && ar->dfs_detector) {
+ if (IS_ENABLED(CONFIG_ATH10K_DFS_CERTIFIED) && ar->dfs_detector) {
nl_dfs_reg = ar->dfs_detector->region;
wmi_dfs_reg = ath10k_mac_get_dfs_region(nl_dfs_reg);
} else {
@@ -3068,7 +3068,7 @@ static void ath10k_reg_notifier(struct wiphy *wiphy,
ath_reg_notifier_apply(wiphy, request, &ar->ath_common.regulatory);
- if (config_enabled(CONFIG_ATH10K_DFS_CERTIFIED) && ar->dfs_detector) {
+ if (IS_ENABLED(CONFIG_ATH10K_DFS_CERTIFIED) && ar->dfs_detector) {
ath10k_dbg(ar, ATH10K_DBG_REGULATORY, "dfs region 0x%x\n",
request->dfs_region);
result = ar->dfs_detector->set_dfs_domain(ar->dfs_detector,
@@ -7955,7 +7955,7 @@ int ath10k_mac_register(struct ath10k *ar)
if (!test_bit(ATH10K_FLAG_RAW_MODE, &ar->dev_flags))
ar->hw->netdev_features = NETIF_F_HW_CSUM;
- if (config_enabled(CONFIG_ATH10K_DFS_CERTIFIED)) {
+ if (IS_ENABLED(CONFIG_ATH10K_DFS_CERTIFIED)) {
/* Init ath dfs pattern detector */
ar->ath_common.debug_mask = ATH_DBG_DFS;
ar->dfs_detector = dfs_pattern_detector_init(&ar->ath_common,
@@ -8003,7 +8003,7 @@ err_unregister:
ieee80211_unregister_hw(ar->hw);
err_dfs_detector_exit:
- if (config_enabled(CONFIG_ATH10K_DFS_CERTIFIED) && ar->dfs_detector)
+ if (IS_ENABLED(CONFIG_ATH10K_DFS_CERTIFIED) && ar->dfs_detector)
ar->dfs_detector->exit(ar->dfs_detector);
err_free:
@@ -8018,7 +8018,7 @@ void ath10k_mac_unregister(struct ath10k *ar)
{
ieee80211_unregister_hw(ar->hw);
- if (config_enabled(CONFIG_ATH10K_DFS_CERTIFIED) && ar->dfs_detector)
+ if (IS_ENABLED(CONFIG_ATH10K_DFS_CERTIFIED) && ar->dfs_detector)
ar->dfs_detector->exit(ar->dfs_detector);
kfree(ar->mac.sbands[NL80211_BAND_2GHZ].channels);
diff --git a/drivers/net/wireless/ath/ath10k/wmi.c b/drivers/net/wireless/ath/ath10k/wmi.c
index 169cd2e783eb..d2462886b75c 100644
--- a/drivers/net/wireless/ath/ath10k/wmi.c
+++ b/drivers/net/wireless/ath/ath10k/wmi.c
@@ -3704,7 +3704,7 @@ void ath10k_wmi_event_dfs(struct ath10k *ar,
phyerr->tsf_timestamp, tsf, buf_len);
/* Skip event if DFS disabled */
- if (!config_enabled(CONFIG_ATH10K_DFS_CERTIFIED))
+ if (!IS_ENABLED(CONFIG_ATH10K_DFS_CERTIFIED))
return;
ATH10K_DFS_STAT_INC(ar, pulses_total);
diff --git a/drivers/net/wireless/ath/ath6kl/cfg80211.c b/drivers/net/wireless/ath/ath6kl/cfg80211.c
index 4ad6284fc37d..72e2ec67768d 100644
--- a/drivers/net/wireless/ath/ath6kl/cfg80211.c
+++ b/drivers/net/wireless/ath/ath6kl/cfg80211.c
@@ -3881,7 +3881,7 @@ int ath6kl_cfg80211_init(struct ath6kl *ar)
BIT(NL80211_IFTYPE_P2P_CLIENT);
}
- if (config_enabled(CONFIG_ATH6KL_REGDOMAIN) &&
+ if (IS_ENABLED(CONFIG_ATH6KL_REGDOMAIN) &&
test_bit(ATH6KL_FW_CAPABILITY_REGDOMAIN, ar->fw_capabilities)) {
wiphy->reg_notifier = ath6kl_cfg80211_reg_notify;
ar->wiphy->features |= NL80211_FEATURE_CELL_BASE_REG_HINTS;
diff --git a/drivers/net/wireless/ath/ath9k/common-spectral.c b/drivers/net/wireless/ath/ath9k/common-spectral.c
index a8762711ad74..e2512d5bc0e1 100644
--- a/drivers/net/wireless/ath/ath9k/common-spectral.c
+++ b/drivers/net/wireless/ath/ath9k/common-spectral.c
@@ -731,7 +731,7 @@ void ath9k_cmn_spectral_scan_trigger(struct ath_common *common,
struct ath_hw *ah = spec_priv->ah;
u32 rxfilter;
- if (config_enabled(CONFIG_ATH9K_TX99))
+ if (IS_ENABLED(CONFIG_ATH9K_TX99))
return;
if (!ath9k_hw_ops(ah)->spectral_scan_trigger) {
@@ -806,7 +806,7 @@ static ssize_t write_file_spec_scan_ctl(struct file *file,
char buf[32];
ssize_t len;
- if (config_enabled(CONFIG_ATH9K_TX99))
+ if (IS_ENABLED(CONFIG_ATH9K_TX99))
return -EOPNOTSUPP;
len = min(count, sizeof(buf) - 1);
@@ -1072,7 +1072,7 @@ static struct rchan_callbacks rfs_spec_scan_cb = {
void ath9k_cmn_spectral_deinit_debug(struct ath_spec_scan_priv *spec_priv)
{
- if (config_enabled(CONFIG_ATH9K_DEBUGFS)) {
+ if (IS_ENABLED(CONFIG_ATH9K_DEBUGFS)) {
relay_close(spec_priv->rfs_chan_spec_scan);
spec_priv->rfs_chan_spec_scan = NULL;
}
diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c
index edc74fca60aa..cfa3fe82ade3 100644
--- a/drivers/net/wireless/ath/ath9k/init.c
+++ b/drivers/net/wireless/ath/ath9k/init.c
@@ -843,7 +843,7 @@ static void ath9k_set_hw_capab(struct ath_softc *sc, struct ieee80211_hw *hw)
NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
NL80211_FEATURE_P2P_GO_CTWIN;
- if (!config_enabled(CONFIG_ATH9K_TX99)) {
+ if (!IS_ENABLED(CONFIG_ATH9K_TX99)) {
hw->wiphy->interface_modes =
BIT(NL80211_IFTYPE_P2P_GO) |
BIT(NL80211_IFTYPE_P2P_CLIENT) |
diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index 7594650f214f..a394622c9022 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -1250,7 +1250,7 @@ static int ath9k_add_interface(struct ieee80211_hw *hw,
mutex_lock(&sc->mutex);
- if (config_enabled(CONFIG_ATH9K_TX99)) {
+ if (IS_ENABLED(CONFIG_ATH9K_TX99)) {
if (sc->cur_chan->nvifs >= 1) {
mutex_unlock(&sc->mutex);
return -EOPNOTSUPP;
@@ -1300,7 +1300,7 @@ static int ath9k_change_interface(struct ieee80211_hw *hw,
mutex_lock(&sc->mutex);
- if (config_enabled(CONFIG_ATH9K_TX99)) {
+ if (IS_ENABLED(CONFIG_ATH9K_TX99)) {
mutex_unlock(&sc->mutex);
return -EOPNOTSUPP;
}
@@ -1360,7 +1360,7 @@ static void ath9k_enable_ps(struct ath_softc *sc)
struct ath_hw *ah = sc->sc_ah;
struct ath_common *common = ath9k_hw_common(ah);
- if (config_enabled(CONFIG_ATH9K_TX99))
+ if (IS_ENABLED(CONFIG_ATH9K_TX99))
return;
sc->ps_enabled = true;
@@ -1379,7 +1379,7 @@ static void ath9k_disable_ps(struct ath_softc *sc)
struct ath_hw *ah = sc->sc_ah;
struct ath_common *common = ath9k_hw_common(ah);
- if (config_enabled(CONFIG_ATH9K_TX99))
+ if (IS_ENABLED(CONFIG_ATH9K_TX99))
return;
sc->ps_enabled = false;
@@ -1953,7 +1953,7 @@ static int ath9k_get_survey(struct ieee80211_hw *hw, int idx,
struct ieee80211_channel *chan;
int pos;
- if (config_enabled(CONFIG_ATH9K_TX99))
+ if (IS_ENABLED(CONFIG_ATH9K_TX99))
return -EOPNOTSUPP;
spin_lock_bh(&common->cc_lock);
@@ -2003,7 +2003,7 @@ static void ath9k_set_coverage_class(struct ieee80211_hw *hw,
struct ath_softc *sc = hw->priv;
struct ath_hw *ah = sc->sc_ah;
- if (config_enabled(CONFIG_ATH9K_TX99))
+ if (IS_ENABLED(CONFIG_ATH9K_TX99))
return;
mutex_lock(&sc->mutex);
diff --git a/drivers/net/wireless/ath/ath9k/recv.c b/drivers/net/wireless/ath/ath9k/recv.c
index 32160fca876a..669734252664 100644
--- a/drivers/net/wireless/ath/ath9k/recv.c
+++ b/drivers/net/wireless/ath/ath9k/recv.c
@@ -377,7 +377,7 @@ u32 ath_calcrxfilter(struct ath_softc *sc)
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
u32 rfilt;
- if (config_enabled(CONFIG_ATH9K_TX99))
+ if (IS_ENABLED(CONFIG_ATH9K_TX99))
return 0;
rfilt = ATH9K_RX_FILTER_UCAST | ATH9K_RX_FILTER_BCAST
diff --git a/drivers/net/wireless/ath/dfs_pattern_detector.c b/drivers/net/wireless/ath/dfs_pattern_detector.c
index 2303ef96299d..2f8136d50f78 100644
--- a/drivers/net/wireless/ath/dfs_pattern_detector.c
+++ b/drivers/net/wireless/ath/dfs_pattern_detector.c
@@ -352,7 +352,7 @@ dfs_pattern_detector_init(struct ath_common *common,
{
struct dfs_pattern_detector *dpd;
- if (!config_enabled(CONFIG_CFG80211_CERTIFICATION_ONUS))
+ if (!IS_ENABLED(CONFIG_CFG80211_CERTIFICATION_ONUS))
return NULL;
dpd = kmalloc(sizeof(*dpd), GFP_KERNEL);
diff --git a/drivers/net/wireless/ath/regd.c b/drivers/net/wireless/ath/regd.c
index 7e15ed9ed31f..f8506037736f 100644
--- a/drivers/net/wireless/ath/regd.c
+++ b/drivers/net/wireless/ath/regd.c
@@ -116,7 +116,7 @@ static const struct ieee80211_regdomain ath_world_regdom_67_68_6A_6C = {
static bool dynamic_country_user_possible(struct ath_regulatory *reg)
{
- if (config_enabled(CONFIG_ATH_REG_DYNAMIC_USER_CERT_TESTING))
+ if (IS_ENABLED(CONFIG_ATH_REG_DYNAMIC_USER_CERT_TESTING))
return true;
switch (reg->country_code) {
@@ -188,7 +188,7 @@ static bool dynamic_country_user_possible(struct ath_regulatory *reg)
static bool ath_reg_dyn_country_user_allow(struct ath_regulatory *reg)
{
- if (!config_enabled(CONFIG_ATH_REG_DYNAMIC_USER_REG_HINTS))
+ if (!IS_ENABLED(CONFIG_ATH_REG_DYNAMIC_USER_REG_HINTS))
return false;
if (!dynamic_country_user_possible(reg))
return false;
diff --git a/drivers/ntb/hw/intel/ntb_hw_intel.c b/drivers/ntb/hw/intel/ntb_hw_intel.c
index 40d04ef5da9e..0d5c29ae51de 100644
--- a/drivers/ntb/hw/intel/ntb_hw_intel.c
+++ b/drivers/ntb/hw/intel/ntb_hw_intel.c
@@ -551,13 +551,15 @@ static ssize_t ndev_debugfs_read(struct file *filp, char __user *ubuf,
size_t count, loff_t *offp)
{
struct intel_ntb_dev *ndev;
+ struct pci_dev *pdev;
void __iomem *mmio;
char *buf;
size_t buf_size;
ssize_t ret, off;
- union { u64 v64; u32 v32; u16 v16; } u;
+ union { u64 v64; u32 v32; u16 v16; u8 v8; } u;
ndev = filp->private_data;
+ pdev = ndev_pdev(ndev);
mmio = ndev->self_mmio;
buf_size = min(count, 0x800ul);
@@ -632,6 +634,41 @@ static ssize_t ndev_debugfs_read(struct file *filp, char __user *ubuf,
"Doorbell Bell -\t\t%#llx\n", u.v64);
off += scnprintf(buf + off, buf_size - off,
+ "\nNTB Window Size:\n");
+
+ pci_read_config_byte(pdev, XEON_PBAR23SZ_OFFSET, &u.v8);
+ off += scnprintf(buf + off, buf_size - off,
+ "PBAR23SZ %hhu\n", u.v8);
+ if (!ndev->bar4_split) {
+ pci_read_config_byte(pdev, XEON_PBAR45SZ_OFFSET, &u.v8);
+ off += scnprintf(buf + off, buf_size - off,
+ "PBAR45SZ %hhu\n", u.v8);
+ } else {
+ pci_read_config_byte(pdev, XEON_PBAR4SZ_OFFSET, &u.v8);
+ off += scnprintf(buf + off, buf_size - off,
+ "PBAR4SZ %hhu\n", u.v8);
+ pci_read_config_byte(pdev, XEON_PBAR5SZ_OFFSET, &u.v8);
+ off += scnprintf(buf + off, buf_size - off,
+ "PBAR5SZ %hhu\n", u.v8);
+ }
+
+ pci_read_config_byte(pdev, XEON_SBAR23SZ_OFFSET, &u.v8);
+ off += scnprintf(buf + off, buf_size - off,
+ "SBAR23SZ %hhu\n", u.v8);
+ if (!ndev->bar4_split) {
+ pci_read_config_byte(pdev, XEON_SBAR45SZ_OFFSET, &u.v8);
+ off += scnprintf(buf + off, buf_size - off,
+ "SBAR45SZ %hhu\n", u.v8);
+ } else {
+ pci_read_config_byte(pdev, XEON_SBAR4SZ_OFFSET, &u.v8);
+ off += scnprintf(buf + off, buf_size - off,
+ "SBAR4SZ %hhu\n", u.v8);
+ pci_read_config_byte(pdev, XEON_SBAR5SZ_OFFSET, &u.v8);
+ off += scnprintf(buf + off, buf_size - off,
+ "SBAR5SZ %hhu\n", u.v8);
+ }
+
+ off += scnprintf(buf + off, buf_size - off,
"\nNTB Incoming XLAT:\n");
u.v64 = ioread64(mmio + bar2_off(ndev->xlat_reg->bar2_xlat, 2));
@@ -669,7 +706,7 @@ static ssize_t ndev_debugfs_read(struct file *filp, char __user *ubuf,
"LMT45 -\t\t\t%#018llx\n", u.v64);
}
- if (pdev_is_xeon(ndev->ntb.pdev)) {
+ if (pdev_is_xeon(pdev)) {
if (ntb_topo_is_b2b(ndev->ntb.topo)) {
off += scnprintf(buf + off, buf_size - off,
"\nNTB Outgoing B2B XLAT:\n");
@@ -750,22 +787,22 @@ static ssize_t ndev_debugfs_read(struct file *filp, char __user *ubuf,
off += scnprintf(buf + off, buf_size - off,
"\nXEON NTB Hardware Errors:\n");
- if (!pci_read_config_word(ndev->ntb.pdev,
+ if (!pci_read_config_word(pdev,
XEON_DEVSTS_OFFSET, &u.v16))
off += scnprintf(buf + off, buf_size - off,
"DEVSTS -\t\t%#06x\n", u.v16);
- if (!pci_read_config_word(ndev->ntb.pdev,
+ if (!pci_read_config_word(pdev,
XEON_LINK_STATUS_OFFSET, &u.v16))
off += scnprintf(buf + off, buf_size - off,
"LNKSTS -\t\t%#06x\n", u.v16);
- if (!pci_read_config_dword(ndev->ntb.pdev,
+ if (!pci_read_config_dword(pdev,
XEON_UNCERRSTS_OFFSET, &u.v32))
off += scnprintf(buf + off, buf_size - off,
"UNCERRSTS -\t\t%#06x\n", u.v32);
- if (!pci_read_config_dword(ndev->ntb.pdev,
+ if (!pci_read_config_dword(pdev,
XEON_CORERRSTS_OFFSET, &u.v32))
off += scnprintf(buf + off, buf_size - off,
"CORERRSTS -\t\t%#06x\n", u.v32);
diff --git a/drivers/ntb/ntb_transport.c b/drivers/ntb/ntb_transport.c
index 2ef9d9130864..d5c5894f252e 100644
--- a/drivers/ntb/ntb_transport.c
+++ b/drivers/ntb/ntb_transport.c
@@ -153,6 +153,7 @@ struct ntb_transport_qp {
unsigned int rx_index;
unsigned int rx_max_entry;
unsigned int rx_max_frame;
+ unsigned int rx_alloc_entry;
dma_cookie_t last_cookie;
struct tasklet_struct rxc_db_work;
@@ -480,7 +481,9 @@ static ssize_t debugfs_read(struct file *filp, char __user *ubuf, size_t count,
out_offset += snprintf(buf + out_offset, out_count - out_offset,
"rx_index - \t%u\n", qp->rx_index);
out_offset += snprintf(buf + out_offset, out_count - out_offset,
- "rx_max_entry - \t%u\n\n", qp->rx_max_entry);
+ "rx_max_entry - \t%u\n", qp->rx_max_entry);
+ out_offset += snprintf(buf + out_offset, out_count - out_offset,
+ "rx_alloc_entry - \t%u\n\n", qp->rx_alloc_entry);
out_offset += snprintf(buf + out_offset, out_count - out_offset,
"tx_bytes - \t%llu\n", qp->tx_bytes);
@@ -597,9 +600,12 @@ static int ntb_transport_setup_qp_mw(struct ntb_transport_ctx *nt,
{
struct ntb_transport_qp *qp = &nt->qp_vec[qp_num];
struct ntb_transport_mw *mw;
+ struct ntb_dev *ndev = nt->ndev;
+ struct ntb_queue_entry *entry;
unsigned int rx_size, num_qps_mw;
unsigned int mw_num, mw_count, qp_count;
unsigned int i;
+ int node;
mw_count = nt->mw_count;
qp_count = nt->qp_count;
@@ -626,6 +632,23 @@ static int ntb_transport_setup_qp_mw(struct ntb_transport_ctx *nt,
qp->rx_max_entry = rx_size / qp->rx_max_frame;
qp->rx_index = 0;
+ /*
+ * Checking to see if we have more entries than the default.
+ * We should add additional entries if that is the case so we
+ * can be in sync with the transport frames.
+ */
+ node = dev_to_node(&ndev->dev);
+ for (i = qp->rx_alloc_entry; i < qp->rx_max_entry; i++) {
+ entry = kzalloc_node(sizeof(*entry), GFP_ATOMIC, node);
+ if (!entry)
+ return -ENOMEM;
+
+ entry->qp = qp;
+ ntb_list_add(&qp->ntb_rx_q_lock, &entry->entry,
+ &qp->rx_free_q);
+ qp->rx_alloc_entry++;
+ }
+
qp->remote_rx_info->entry = qp->rx_max_entry - 1;
/* setup the hdr offsets with 0's */
@@ -1037,6 +1060,13 @@ static int ntb_transport_probe(struct ntb_client *self, struct ntb_dev *ndev)
int node;
int rc, i;
+ mw_count = ntb_mw_count(ndev);
+ if (ntb_spad_count(ndev) < (NUM_MWS + 1 + mw_count * 2)) {
+ dev_err(&ndev->dev, "Not enough scratch pad registers for %s",
+ NTB_TRANSPORT_NAME);
+ return -EIO;
+ }
+
if (ntb_db_is_unsafe(ndev))
dev_dbg(&ndev->dev,
"doorbell is unsafe, proceed anyway...\n");
@@ -1052,8 +1082,6 @@ static int ntb_transport_probe(struct ntb_client *self, struct ntb_dev *ndev)
nt->ndev = ndev;
- mw_count = ntb_mw_count(ndev);
-
nt->mw_count = mw_count;
nt->mw_vec = kzalloc_node(mw_count * sizeof(*nt->mw_vec),
@@ -1722,8 +1750,9 @@ ntb_transport_create_queue(void *data, struct device *client_dev,
ntb_list_add(&qp->ntb_rx_q_lock, &entry->entry,
&qp->rx_free_q);
}
+ qp->rx_alloc_entry = NTB_QP_DEF_NUM_ENTRIES;
- for (i = 0; i < NTB_QP_DEF_NUM_ENTRIES; i++) {
+ for (i = 0; i < qp->tx_max_entry; i++) {
entry = kzalloc_node(sizeof(*entry), GFP_ATOMIC, node);
if (!entry)
goto err2;
@@ -1744,6 +1773,7 @@ err2:
while ((entry = ntb_list_rm(&qp->ntb_tx_free_q_lock, &qp->tx_free_q)))
kfree(entry);
err1:
+ qp->rx_alloc_entry = 0;
while ((entry = ntb_list_rm(&qp->ntb_rx_q_lock, &qp->rx_free_q)))
kfree(entry);
if (qp->tx_dma_chan)
diff --git a/drivers/ntb/test/ntb_perf.c b/drivers/ntb/test/ntb_perf.c
index 8dfce9c9aad0..6a50f20bf1cd 100644
--- a/drivers/ntb/test/ntb_perf.c
+++ b/drivers/ntb/test/ntb_perf.c
@@ -58,6 +58,7 @@
#include <linux/delay.h>
#include <linux/sizes.h>
#include <linux/ntb.h>
+#include <linux/mutex.h>
#define DRIVER_NAME "ntb_perf"
#define DRIVER_DESCRIPTION "PCIe NTB Performance Measurement Tool"
@@ -83,6 +84,10 @@ MODULE_DESCRIPTION(DRIVER_DESCRIPTION);
static struct dentry *perf_debugfs_dir;
+static unsigned long max_mw_size;
+module_param(max_mw_size, ulong, 0644);
+MODULE_PARM_DESC(max_mw_size, "Limit size of large memory windows");
+
static unsigned int seg_order = 19; /* 512K */
module_param(seg_order, uint, 0644);
MODULE_PARM_DESC(seg_order, "size order [n^2] of buffer segment for testing");
@@ -117,6 +122,10 @@ struct pthr_ctx {
int dma_prep_err;
int src_idx;
void *srcs[MAX_SRCS];
+ wait_queue_head_t *wq;
+ int status;
+ u64 copied;
+ u64 diff_us;
};
struct perf_ctx {
@@ -124,23 +133,23 @@ struct perf_ctx {
spinlock_t db_lock;
struct perf_mw mw;
bool link_is_up;
- struct work_struct link_cleanup;
struct delayed_work link_work;
+ wait_queue_head_t link_wq;
struct dentry *debugfs_node_dir;
struct dentry *debugfs_run;
struct dentry *debugfs_threads;
u8 perf_threads;
- bool run;
+ /* mutex ensures only one set of threads run at once */
+ struct mutex run_mutex;
struct pthr_ctx pthr_ctx[MAX_THREADS];
atomic_t tsync;
+ atomic_t tdone;
};
enum {
VERSION = 0,
MW_SZ_HIGH,
MW_SZ_LOW,
- SPAD_MSG,
- SPAD_ACK,
MAX_SPAD
};
@@ -148,10 +157,16 @@ static void perf_link_event(void *ctx)
{
struct perf_ctx *perf = ctx;
- if (ntb_link_is_up(perf->ntb, NULL, NULL) == 1)
+ if (ntb_link_is_up(perf->ntb, NULL, NULL) == 1) {
schedule_delayed_work(&perf->link_work, 2*HZ);
- else
- schedule_work(&perf->link_cleanup);
+ } else {
+ dev_dbg(&perf->ntb->pdev->dev, "link down\n");
+
+ if (!perf->link_is_up)
+ cancel_delayed_work_sync(&perf->link_work);
+
+ perf->link_is_up = false;
+ }
}
static void perf_db_event(void *ctx, int vec)
@@ -271,6 +286,7 @@ static int perf_move_data(struct pthr_ctx *pctx, char __iomem *dst, char *src,
char __iomem *tmp = dst;
u64 perf, diff_us;
ktime_t kstart, kstop, kdiff;
+ unsigned long last_sleep = jiffies;
chunks = div64_u64(win_size, buf_size);
total_chunks = div64_u64(total, buf_size);
@@ -286,30 +302,40 @@ static int perf_move_data(struct pthr_ctx *pctx, char __iomem *dst, char *src,
} else
tmp += buf_size;
- /* Probably should schedule every 4GB to prevent soft hang. */
- if (((copied % SZ_4G) == 0) && !use_dma) {
+ /* Probably should schedule every 5s to prevent soft hang. */
+ if (unlikely((jiffies - last_sleep) > 5 * HZ)) {
+ last_sleep = jiffies;
set_current_state(TASK_INTERRUPTIBLE);
schedule_timeout(1);
}
+
+ if (unlikely(kthread_should_stop()))
+ break;
}
if (use_dma) {
- pr_info("%s: All DMA descriptors submitted\n", current->comm);
- while (atomic_read(&pctx->dma_sync) != 0)
+ pr_debug("%s: All DMA descriptors submitted\n", current->comm);
+ while (atomic_read(&pctx->dma_sync) != 0) {
+ if (kthread_should_stop())
+ break;
msleep(20);
+ }
}
kstop = ktime_get();
kdiff = ktime_sub(kstop, kstart);
diff_us = ktime_to_us(kdiff);
- pr_info("%s: copied %llu bytes\n", current->comm, copied);
+ pr_debug("%s: copied %llu bytes\n", current->comm, copied);
- pr_info("%s: lasted %llu usecs\n", current->comm, diff_us);
+ pr_debug("%s: lasted %llu usecs\n", current->comm, diff_us);
perf = div64_u64(copied, diff_us);
- pr_info("%s: MBytes/s: %llu\n", current->comm, perf);
+ pr_debug("%s: MBytes/s: %llu\n", current->comm, perf);
+
+ pctx->copied = copied;
+ pctx->diff_us = diff_us;
return 0;
}
@@ -331,7 +357,7 @@ static int ntb_perf_thread(void *data)
int rc, node, i;
struct dma_chan *dma_chan = NULL;
- pr_info("kthread %s starting...\n", current->comm);
+ pr_debug("kthread %s starting...\n", current->comm);
node = dev_to_node(&pdev->dev);
@@ -389,7 +415,10 @@ static int ntb_perf_thread(void *data)
pctx->srcs[i] = NULL;
}
- return 0;
+ atomic_inc(&perf->tdone);
+ wake_up(pctx->wq);
+ rc = 0;
+ goto done;
err:
for (i = 0; i < MAX_SRCS; i++) {
@@ -402,6 +431,16 @@ err:
pctx->dma_chan = NULL;
}
+done:
+ /* Wait until we are told to stop */
+ for (;;) {
+ set_current_state(TASK_INTERRUPTIBLE);
+ if (kthread_should_stop())
+ break;
+ schedule();
+ }
+ __set_current_state(TASK_RUNNING);
+
return rc;
}
@@ -472,6 +511,10 @@ static void perf_link_work(struct work_struct *work)
dev_dbg(&perf->ntb->pdev->dev, "%s called\n", __func__);
size = perf->mw.phys_size;
+
+ if (max_mw_size && size > max_mw_size)
+ size = max_mw_size;
+
ntb_peer_spad_write(ndev, MW_SZ_HIGH, upper_32_bits(size));
ntb_peer_spad_write(ndev, MW_SZ_LOW, lower_32_bits(size));
ntb_peer_spad_write(ndev, VERSION, PERF_VERSION);
@@ -496,6 +539,7 @@ static void perf_link_work(struct work_struct *work)
goto out1;
perf->link_is_up = true;
+ wake_up(&perf->link_wq);
return;
@@ -508,18 +552,6 @@ out:
msecs_to_jiffies(PERF_LINK_DOWN_TIMEOUT));
}
-static void perf_link_cleanup(struct work_struct *work)
-{
- struct perf_ctx *perf = container_of(work,
- struct perf_ctx,
- link_cleanup);
-
- dev_dbg(&perf->ntb->pdev->dev, "%s called\n", __func__);
-
- if (!perf->link_is_up)
- cancel_delayed_work_sync(&perf->link_work);
-}
-
static int perf_setup_mw(struct ntb_dev *ntb, struct perf_ctx *perf)
{
struct perf_mw *mw;
@@ -544,16 +576,44 @@ static ssize_t debugfs_run_read(struct file *filp, char __user *ubuf,
{
struct perf_ctx *perf = filp->private_data;
char *buf;
- ssize_t ret, out_offset;
+ ssize_t ret, out_off = 0;
+ struct pthr_ctx *pctx;
+ int i;
+ u64 rate;
if (!perf)
return 0;
- buf = kmalloc(64, GFP_KERNEL);
+ buf = kmalloc(1024, GFP_KERNEL);
if (!buf)
return -ENOMEM;
- out_offset = snprintf(buf, 64, "%d\n", perf->run);
- ret = simple_read_from_buffer(ubuf, count, offp, buf, out_offset);
+
+ if (mutex_is_locked(&perf->run_mutex)) {
+ out_off = snprintf(buf, 64, "running\n");
+ goto read_from_buf;
+ }
+
+ for (i = 0; i < MAX_THREADS; i++) {
+ pctx = &perf->pthr_ctx[i];
+
+ if (pctx->status == -ENODATA)
+ break;
+
+ if (pctx->status) {
+ out_off += snprintf(buf + out_off, 1024 - out_off,
+ "%d: error %d\n", i,
+ pctx->status);
+ continue;
+ }
+
+ rate = div64_u64(pctx->copied, pctx->diff_us);
+ out_off += snprintf(buf + out_off, 1024 - out_off,
+ "%d: copied %llu bytes in %llu usecs, %llu MBytes/s\n",
+ i, pctx->copied, pctx->diff_us, rate);
+ }
+
+read_from_buf:
+ ret = simple_read_from_buffer(ubuf, count, offp, buf, out_off);
kfree(buf);
return ret;
@@ -564,80 +624,90 @@ static void threads_cleanup(struct perf_ctx *perf)
struct pthr_ctx *pctx;
int i;
- perf->run = false;
for (i = 0; i < MAX_THREADS; i++) {
pctx = &perf->pthr_ctx[i];
if (pctx->thread) {
- kthread_stop(pctx->thread);
+ pctx->status = kthread_stop(pctx->thread);
pctx->thread = NULL;
}
}
}
+static void perf_clear_thread_status(struct perf_ctx *perf)
+{
+ int i;
+
+ for (i = 0; i < MAX_THREADS; i++)
+ perf->pthr_ctx[i].status = -ENODATA;
+}
+
static ssize_t debugfs_run_write(struct file *filp, const char __user *ubuf,
size_t count, loff_t *offp)
{
struct perf_ctx *perf = filp->private_data;
int node, i;
+ DECLARE_WAIT_QUEUE_HEAD(wq);
- if (!perf->link_is_up)
- return 0;
+ if (wait_event_interruptible(perf->link_wq, perf->link_is_up))
+ return -ENOLINK;
if (perf->perf_threads == 0)
- return 0;
+ return -EINVAL;
- if (atomic_read(&perf->tsync) == 0)
- perf->run = false;
+ if (!mutex_trylock(&perf->run_mutex))
+ return -EBUSY;
- if (perf->run)
- threads_cleanup(perf);
- else {
- perf->run = true;
+ perf_clear_thread_status(perf);
- if (perf->perf_threads > MAX_THREADS) {
- perf->perf_threads = MAX_THREADS;
- pr_info("Reset total threads to: %u\n", MAX_THREADS);
- }
+ if (perf->perf_threads > MAX_THREADS) {
+ perf->perf_threads = MAX_THREADS;
+ pr_info("Reset total threads to: %u\n", MAX_THREADS);
+ }
- /* no greater than 1M */
- if (seg_order > MAX_SEG_ORDER) {
- seg_order = MAX_SEG_ORDER;
- pr_info("Fix seg_order to %u\n", seg_order);
- }
+ /* no greater than 1M */
+ if (seg_order > MAX_SEG_ORDER) {
+ seg_order = MAX_SEG_ORDER;
+ pr_info("Fix seg_order to %u\n", seg_order);
+ }
- if (run_order < seg_order) {
- run_order = seg_order;
- pr_info("Fix run_order to %u\n", run_order);
- }
+ if (run_order < seg_order) {
+ run_order = seg_order;
+ pr_info("Fix run_order to %u\n", run_order);
+ }
- node = dev_to_node(&perf->ntb->pdev->dev);
- /* launch kernel thread */
- for (i = 0; i < perf->perf_threads; i++) {
- struct pthr_ctx *pctx;
-
- pctx = &perf->pthr_ctx[i];
- atomic_set(&pctx->dma_sync, 0);
- pctx->perf = perf;
- pctx->thread =
- kthread_create_on_node(ntb_perf_thread,
- (void *)pctx,
- node, "ntb_perf %d", i);
- if (IS_ERR(pctx->thread)) {
- pctx->thread = NULL;
- goto err;
- } else
- wake_up_process(pctx->thread);
-
- if (perf->run == false)
- return -ENXIO;
- }
+ node = dev_to_node(&perf->ntb->pdev->dev);
+ atomic_set(&perf->tdone, 0);
+ /* launch kernel thread */
+ for (i = 0; i < perf->perf_threads; i++) {
+ struct pthr_ctx *pctx;
+
+ pctx = &perf->pthr_ctx[i];
+ atomic_set(&pctx->dma_sync, 0);
+ pctx->perf = perf;
+ pctx->wq = &wq;
+ pctx->thread =
+ kthread_create_on_node(ntb_perf_thread,
+ (void *)pctx,
+ node, "ntb_perf %d", i);
+ if (IS_ERR(pctx->thread)) {
+ pctx->thread = NULL;
+ goto err;
+ } else {
+ wake_up_process(pctx->thread);
+ }
}
+ wait_event_interruptible(wq,
+ atomic_read(&perf->tdone) == perf->perf_threads);
+
+ threads_cleanup(perf);
+ mutex_unlock(&perf->run_mutex);
return count;
err:
threads_cleanup(perf);
+ mutex_unlock(&perf->run_mutex);
return -ENXIO;
}
@@ -688,6 +758,12 @@ static int perf_probe(struct ntb_client *client, struct ntb_dev *ntb)
int node;
int rc = 0;
+ if (ntb_spad_count(ntb) < MAX_SPAD) {
+ dev_err(&ntb->dev, "Not enough scratch pad registers for %s",
+ DRIVER_NAME);
+ return -EIO;
+ }
+
node = dev_to_node(&pdev->dev);
perf = kzalloc_node(sizeof(*perf), GFP_KERNEL, node);
@@ -699,11 +775,11 @@ static int perf_probe(struct ntb_client *client, struct ntb_dev *ntb)
perf->ntb = ntb;
perf->perf_threads = 1;
atomic_set(&perf->tsync, 0);
- perf->run = false;
+ mutex_init(&perf->run_mutex);
spin_lock_init(&perf->db_lock);
perf_setup_mw(ntb, perf);
+ init_waitqueue_head(&perf->link_wq);
INIT_DELAYED_WORK(&perf->link_work, perf_link_work);
- INIT_WORK(&perf->link_cleanup, perf_link_cleanup);
rc = ntb_set_ctx(ntb, perf, &perf_ops);
if (rc)
@@ -717,11 +793,12 @@ static int perf_probe(struct ntb_client *client, struct ntb_dev *ntb)
if (rc)
goto err_ctx;
+ perf_clear_thread_status(perf);
+
return 0;
err_ctx:
cancel_delayed_work_sync(&perf->link_work);
- cancel_work_sync(&perf->link_cleanup);
kfree(perf);
err_perf:
return rc;
@@ -734,8 +811,9 @@ static void perf_remove(struct ntb_client *client, struct ntb_dev *ntb)
dev_dbg(&perf->ntb->dev, "%s called\n", __func__);
+ mutex_lock(&perf->run_mutex);
+
cancel_delayed_work_sync(&perf->link_work);
- cancel_work_sync(&perf->link_cleanup);
ntb_clear_ctx(ntb);
ntb_link_disable(ntb);
diff --git a/drivers/ntb/test/ntb_pingpong.c b/drivers/ntb/test/ntb_pingpong.c
index fe1600566981..7d311799fca1 100644
--- a/drivers/ntb/test/ntb_pingpong.c
+++ b/drivers/ntb/test/ntb_pingpong.c
@@ -61,6 +61,7 @@
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
+#include <linux/debugfs.h>
#include <linux/ntb.h>
@@ -96,8 +97,13 @@ struct pp_ctx {
spinlock_t db_lock;
struct timer_list db_timer;
unsigned long db_delay;
+ struct dentry *debugfs_node_dir;
+ struct dentry *debugfs_count;
+ atomic_t count;
};
+static struct dentry *pp_debugfs_dir;
+
static void pp_ping(unsigned long ctx)
{
struct pp_ctx *pp = (void *)ctx;
@@ -171,10 +177,32 @@ static void pp_db_event(void *ctx, int vec)
dev_dbg(&pp->ntb->dev,
"Pong vec %d bits %#llx\n",
vec, db_bits);
+ atomic_inc(&pp->count);
}
spin_unlock_irqrestore(&pp->db_lock, irqflags);
}
+static int pp_debugfs_setup(struct pp_ctx *pp)
+{
+ struct pci_dev *pdev = pp->ntb->pdev;
+
+ if (!pp_debugfs_dir)
+ return -ENODEV;
+
+ pp->debugfs_node_dir = debugfs_create_dir(pci_name(pdev),
+ pp_debugfs_dir);
+ if (!pp->debugfs_node_dir)
+ return -ENODEV;
+
+ pp->debugfs_count = debugfs_create_atomic_t("count", S_IRUSR | S_IWUSR,
+ pp->debugfs_node_dir,
+ &pp->count);
+ if (!pp->debugfs_count)
+ return -ENODEV;
+
+ return 0;
+}
+
static const struct ntb_ctx_ops pp_ops = {
.link_event = pp_link_event,
.db_event = pp_db_event,
@@ -210,6 +238,7 @@ static int pp_probe(struct ntb_client *client,
pp->ntb = ntb;
pp->db_bits = 0;
+ atomic_set(&pp->count, 0);
spin_lock_init(&pp->db_lock);
setup_timer(&pp->db_timer, pp_ping, (unsigned long)pp);
pp->db_delay = msecs_to_jiffies(delay_ms);
@@ -218,6 +247,10 @@ static int pp_probe(struct ntb_client *client,
if (rc)
goto err_ctx;
+ rc = pp_debugfs_setup(pp);
+ if (rc)
+ goto err_ctx;
+
ntb_link_enable(ntb, NTB_SPEED_AUTO, NTB_WIDTH_AUTO);
ntb_link_event(ntb);
@@ -234,6 +267,8 @@ static void pp_remove(struct ntb_client *client,
{
struct pp_ctx *pp = ntb->ctx;
+ debugfs_remove_recursive(pp->debugfs_node_dir);
+
ntb_clear_ctx(ntb);
del_timer_sync(&pp->db_timer);
ntb_link_disable(ntb);
@@ -247,4 +282,29 @@ static struct ntb_client pp_client = {
.remove = pp_remove,
},
};
-module_ntb_client(pp_client);
+
+static int __init pp_init(void)
+{
+ int rc;
+
+ if (debugfs_initialized())
+ pp_debugfs_dir = debugfs_create_dir(KBUILD_MODNAME, NULL);
+
+ rc = ntb_register_client(&pp_client);
+ if (rc)
+ goto err_client;
+
+ return 0;
+
+err_client:
+ debugfs_remove_recursive(pp_debugfs_dir);
+ return rc;
+}
+module_init(pp_init);
+
+static void __exit pp_exit(void)
+{
+ ntb_unregister_client(&pp_client);
+ debugfs_remove_recursive(pp_debugfs_dir);
+}
+module_exit(pp_exit);
diff --git a/drivers/ntb/test/ntb_tool.c b/drivers/ntb/test/ntb_tool.c
index 6f5dc6ca673d..61bf2ef87e0e 100644
--- a/drivers/ntb/test/ntb_tool.c
+++ b/drivers/ntb/test/ntb_tool.c
@@ -59,6 +59,12 @@
*
* Eg: check if clearing the doorbell mask generates an interrupt.
*
+ * # Check the link status
+ * root@self# cat $DBG_DIR/link
+ *
+ * # Block until the link is up
+ * root@self# echo Y > $DBG_DIR/link_event
+ *
* # Set the doorbell mask
* root@self# echo 's 1' > $DBG_DIR/mask
*
@@ -79,6 +85,13 @@
* root@self# cat $DBG_DIR/spad
*
* Observe that spad 0 and 1 have the values set by the peer.
+ *
+ * # Check the memory window translation info
+ * cat $DBG_DIR/peer_trans0
+ *
+ * # Setup a 16k memory window buffer
+ * echo 16384 > $DBG_DIR/peer_trans0
+ *
*/
#include <linux/init.h>
@@ -89,6 +102,7 @@
#include <linux/dma-mapping.h>
#include <linux/pci.h>
#include <linux/slab.h>
+#include <linux/uaccess.h>
#include <linux/ntb.h>
@@ -105,11 +119,27 @@ MODULE_VERSION(DRIVER_VERSION);
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESCRIPTION);
+#define MAX_MWS 16
+
static struct dentry *tool_dbgfs;
+struct tool_mw {
+ int idx;
+ struct tool_ctx *tc;
+ resource_size_t win_size;
+ resource_size_t size;
+ u8 __iomem *local;
+ u8 *peer;
+ dma_addr_t peer_dma;
+ struct dentry *peer_dbg_file;
+};
+
struct tool_ctx {
struct ntb_dev *ntb;
struct dentry *dbgfs;
+ wait_queue_head_t link_wq;
+ int mw_count;
+ struct tool_mw mws[MAX_MWS];
};
#define SPAD_FNAME_SIZE 0x10
@@ -135,6 +165,8 @@ static void tool_link_event(void *ctx)
dev_dbg(&tc->ntb->dev, "link is %s speed %d width %d\n",
up ? "up" : "down", speed, width);
+
+ wake_up(&tc->link_wq);
}
static void tool_db_event(void *ctx, int vec)
@@ -239,7 +271,14 @@ static ssize_t tool_spadfn_read(struct tool_ctx *tc, char __user *ubuf,
if (!spad_read_fn)
return -EINVAL;
- buf_size = min_t(size_t, size, 0x100);
+ spad_count = ntb_spad_count(tc->ntb);
+
+ /*
+ * We multiply the number of spads by 15 to get the buffer size
+ * this is from 3 for the %d, 10 for the largest hex value
+ * (0x00000000) and 2 for the tab and line feed.
+ */
+ buf_size = min_t(size_t, size, spad_count * 15);
buf = kmalloc(buf_size, GFP_KERNEL);
if (!buf)
@@ -247,7 +286,6 @@ static ssize_t tool_spadfn_read(struct tool_ctx *tc, char __user *ubuf,
pos = 0;
- spad_count = ntb_spad_count(tc->ntb);
for (i = 0; i < spad_count; ++i) {
pos += scnprintf(buf + pos, buf_size - pos, "%d\t%#x\n",
i, spad_read_fn(tc->ntb, i));
@@ -268,7 +306,7 @@ static ssize_t tool_spadfn_write(struct tool_ctx *tc,
{
int spad_idx;
u32 spad_val;
- char *buf;
+ char *buf, *buf_ptr;
int pos, n;
ssize_t rc;
@@ -288,14 +326,15 @@ static ssize_t tool_spadfn_write(struct tool_ctx *tc,
}
buf[size] = 0;
-
- n = sscanf(buf, "%d %i%n", &spad_idx, &spad_val, &pos);
+ buf_ptr = buf;
+ n = sscanf(buf_ptr, "%d %i%n", &spad_idx, &spad_val, &pos);
while (n == 2) {
+ buf_ptr += pos;
rc = spad_write_fn(tc->ntb, spad_idx, spad_val);
if (rc)
break;
- n = sscanf(buf + pos, "%d %i%n", &spad_idx, &spad_val, &pos);
+ n = sscanf(buf_ptr, "%d %i%n", &spad_idx, &spad_val, &pos);
}
if (n < 0)
@@ -442,8 +481,384 @@ static TOOL_FOPS_RDWR(tool_peer_spad_fops,
tool_peer_spad_read,
tool_peer_spad_write);
+static ssize_t tool_link_read(struct file *filep, char __user *ubuf,
+ size_t size, loff_t *offp)
+{
+ struct tool_ctx *tc = filep->private_data;
+ char buf[3];
+
+ buf[0] = ntb_link_is_up(tc->ntb, NULL, NULL) ? 'Y' : 'N';
+ buf[1] = '\n';
+ buf[2] = '\0';
+
+ return simple_read_from_buffer(ubuf, size, offp, buf, 2);
+}
+
+static ssize_t tool_link_write(struct file *filep, const char __user *ubuf,
+ size_t size, loff_t *offp)
+{
+ struct tool_ctx *tc = filep->private_data;
+ char buf[32];
+ size_t buf_size;
+ bool val;
+ int rc;
+
+ buf_size = min(size, (sizeof(buf) - 1));
+ if (copy_from_user(buf, ubuf, buf_size))
+ return -EFAULT;
+
+ buf[buf_size] = '\0';
+
+ rc = strtobool(buf, &val);
+ if (rc)
+ return rc;
+
+ if (val)
+ rc = ntb_link_enable(tc->ntb, NTB_SPEED_AUTO, NTB_WIDTH_AUTO);
+ else
+ rc = ntb_link_disable(tc->ntb);
+
+ if (rc)
+ return rc;
+
+ return size;
+}
+
+static TOOL_FOPS_RDWR(tool_link_fops,
+ tool_link_read,
+ tool_link_write);
+
+static ssize_t tool_link_event_write(struct file *filep,
+ const char __user *ubuf,
+ size_t size, loff_t *offp)
+{
+ struct tool_ctx *tc = filep->private_data;
+ char buf[32];
+ size_t buf_size;
+ bool val;
+ int rc;
+
+ buf_size = min(size, (sizeof(buf) - 1));
+ if (copy_from_user(buf, ubuf, buf_size))
+ return -EFAULT;
+
+ buf[buf_size] = '\0';
+
+ rc = strtobool(buf, &val);
+ if (rc)
+ return rc;
+
+ if (wait_event_interruptible(tc->link_wq,
+ ntb_link_is_up(tc->ntb, NULL, NULL) == val))
+ return -ERESTART;
+
+ return size;
+}
+
+static TOOL_FOPS_RDWR(tool_link_event_fops,
+ NULL,
+ tool_link_event_write);
+
+static ssize_t tool_mw_read(struct file *filep, char __user *ubuf,
+ size_t size, loff_t *offp)
+{
+ struct tool_mw *mw = filep->private_data;
+ ssize_t rc;
+ loff_t pos = *offp;
+ void *buf;
+
+ if (mw->local == NULL)
+ return -EIO;
+ if (pos < 0)
+ return -EINVAL;
+ if (pos >= mw->win_size || !size)
+ return 0;
+ if (size > mw->win_size - pos)
+ size = mw->win_size - pos;
+
+ buf = kmalloc(size, GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+
+ memcpy_fromio(buf, mw->local + pos, size);
+ rc = copy_to_user(ubuf, buf, size);
+ if (rc == size) {
+ rc = -EFAULT;
+ goto err_free;
+ }
+
+ size -= rc;
+ *offp = pos + size;
+ rc = size;
+
+err_free:
+ kfree(buf);
+
+ return rc;
+}
+
+static ssize_t tool_mw_write(struct file *filep, const char __user *ubuf,
+ size_t size, loff_t *offp)
+{
+ struct tool_mw *mw = filep->private_data;
+ ssize_t rc;
+ loff_t pos = *offp;
+ void *buf;
+
+ if (pos < 0)
+ return -EINVAL;
+ if (pos >= mw->win_size || !size)
+ return 0;
+ if (size > mw->win_size - pos)
+ size = mw->win_size - pos;
+
+ buf = kmalloc(size, GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+
+ rc = copy_from_user(buf, ubuf, size);
+ if (rc == size) {
+ rc = -EFAULT;
+ goto err_free;
+ }
+
+ size -= rc;
+ *offp = pos + size;
+ rc = size;
+
+ memcpy_toio(mw->local + pos, buf, size);
+
+err_free:
+ kfree(buf);
+
+ return rc;
+}
+
+static TOOL_FOPS_RDWR(tool_mw_fops,
+ tool_mw_read,
+ tool_mw_write);
+
+static ssize_t tool_peer_mw_read(struct file *filep, char __user *ubuf,
+ size_t size, loff_t *offp)
+{
+ struct tool_mw *mw = filep->private_data;
+
+ if (!mw->peer)
+ return -ENXIO;
+
+ return simple_read_from_buffer(ubuf, size, offp, mw->peer, mw->size);
+}
+
+static ssize_t tool_peer_mw_write(struct file *filep, const char __user *ubuf,
+ size_t size, loff_t *offp)
+{
+ struct tool_mw *mw = filep->private_data;
+
+ if (!mw->peer)
+ return -ENXIO;
+
+ return simple_write_to_buffer(mw->peer, mw->size, offp, ubuf, size);
+}
+
+static TOOL_FOPS_RDWR(tool_peer_mw_fops,
+ tool_peer_mw_read,
+ tool_peer_mw_write);
+
+static int tool_setup_mw(struct tool_ctx *tc, int idx, size_t req_size)
+{
+ int rc;
+ struct tool_mw *mw = &tc->mws[idx];
+ phys_addr_t base;
+ resource_size_t size, align, align_size;
+ char buf[16];
+
+ if (mw->peer)
+ return 0;
+
+ rc = ntb_mw_get_range(tc->ntb, idx, &base, &size, &align,
+ &align_size);
+ if (rc)
+ return rc;
+
+ mw->size = min_t(resource_size_t, req_size, size);
+ mw->size = round_up(mw->size, align);
+ mw->size = round_up(mw->size, align_size);
+ mw->peer = dma_alloc_coherent(&tc->ntb->pdev->dev, mw->size,
+ &mw->peer_dma, GFP_KERNEL);
+
+ if (!mw->peer)
+ return -ENOMEM;
+
+ rc = ntb_mw_set_trans(tc->ntb, idx, mw->peer_dma, mw->size);
+ if (rc)
+ goto err_free_dma;
+
+ snprintf(buf, sizeof(buf), "peer_mw%d", idx);
+ mw->peer_dbg_file = debugfs_create_file(buf, S_IRUSR | S_IWUSR,
+ mw->tc->dbgfs, mw,
+ &tool_peer_mw_fops);
+
+ return 0;
+
+err_free_dma:
+ dma_free_coherent(&tc->ntb->pdev->dev, mw->size,
+ mw->peer,
+ mw->peer_dma);
+ mw->peer = NULL;
+ mw->peer_dma = 0;
+ mw->size = 0;
+
+ return rc;
+}
+
+static void tool_free_mw(struct tool_ctx *tc, int idx)
+{
+ struct tool_mw *mw = &tc->mws[idx];
+
+ if (mw->peer) {
+ ntb_mw_clear_trans(tc->ntb, idx);
+ dma_free_coherent(&tc->ntb->pdev->dev, mw->size,
+ mw->peer,
+ mw->peer_dma);
+ }
+
+ mw->peer = NULL;
+ mw->peer_dma = 0;
+
+ debugfs_remove(mw->peer_dbg_file);
+
+ mw->peer_dbg_file = NULL;
+}
+
+static ssize_t tool_peer_mw_trans_read(struct file *filep,
+ char __user *ubuf,
+ size_t size, loff_t *offp)
+{
+ struct tool_mw *mw = filep->private_data;
+
+ char *buf;
+ size_t buf_size;
+ ssize_t ret, off = 0;
+
+ phys_addr_t base;
+ resource_size_t mw_size;
+ resource_size_t align;
+ resource_size_t align_size;
+
+ buf_size = min_t(size_t, size, 512);
+
+ buf = kmalloc(buf_size, GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+
+ ntb_mw_get_range(mw->tc->ntb, mw->idx,
+ &base, &mw_size, &align, &align_size);
+
+ off += scnprintf(buf + off, buf_size - off,
+ "Peer MW %d Information:\n", mw->idx);
+
+ off += scnprintf(buf + off, buf_size - off,
+ "Physical Address \t%pa[p]\n",
+ &base);
+
+ off += scnprintf(buf + off, buf_size - off,
+ "Window Size \t%lld\n",
+ (unsigned long long)mw_size);
+
+ off += scnprintf(buf + off, buf_size - off,
+ "Alignment \t%lld\n",
+ (unsigned long long)align);
+
+ off += scnprintf(buf + off, buf_size - off,
+ "Size Alignment \t%lld\n",
+ (unsigned long long)align_size);
+
+ off += scnprintf(buf + off, buf_size - off,
+ "Ready \t%c\n",
+ (mw->peer) ? 'Y' : 'N');
+
+ off += scnprintf(buf + off, buf_size - off,
+ "Allocated Size \t%zd\n",
+ (mw->peer) ? (size_t)mw->size : 0);
+
+ ret = simple_read_from_buffer(ubuf, size, offp, buf, off);
+ kfree(buf);
+ return ret;
+}
+
+static ssize_t tool_peer_mw_trans_write(struct file *filep,
+ const char __user *ubuf,
+ size_t size, loff_t *offp)
+{
+ struct tool_mw *mw = filep->private_data;
+
+ char buf[32];
+ size_t buf_size;
+ unsigned long long val;
+ int rc;
+
+ buf_size = min(size, (sizeof(buf) - 1));
+ if (copy_from_user(buf, ubuf, buf_size))
+ return -EFAULT;
+
+ buf[buf_size] = '\0';
+
+ rc = kstrtoull(buf, 0, &val);
+ if (rc)
+ return rc;
+
+ tool_free_mw(mw->tc, mw->idx);
+ if (val)
+ rc = tool_setup_mw(mw->tc, mw->idx, val);
+
+ if (rc)
+ return rc;
+
+ return size;
+}
+
+static TOOL_FOPS_RDWR(tool_peer_mw_trans_fops,
+ tool_peer_mw_trans_read,
+ tool_peer_mw_trans_write);
+
+static int tool_init_mw(struct tool_ctx *tc, int idx)
+{
+ struct tool_mw *mw = &tc->mws[idx];
+ phys_addr_t base;
+ int rc;
+
+ rc = ntb_mw_get_range(tc->ntb, idx, &base, &mw->win_size,
+ NULL, NULL);
+ if (rc)
+ return rc;
+
+ mw->tc = tc;
+ mw->idx = idx;
+ mw->local = ioremap_wc(base, mw->win_size);
+ if (!mw->local)
+ return -EFAULT;
+
+ return 0;
+}
+
+static void tool_free_mws(struct tool_ctx *tc)
+{
+ int i;
+
+ for (i = 0; i < tc->mw_count; i++) {
+ tool_free_mw(tc, i);
+
+ if (tc->mws[i].local)
+ iounmap(tc->mws[i].local);
+
+ tc->mws[i].local = NULL;
+ }
+}
+
static void tool_setup_dbgfs(struct tool_ctx *tc)
{
+ int i;
+
/* This modules is useless without dbgfs... */
if (!tool_dbgfs) {
tc->dbgfs = NULL;
@@ -472,12 +887,31 @@ static void tool_setup_dbgfs(struct tool_ctx *tc)
debugfs_create_file("peer_spad", S_IRUSR | S_IWUSR, tc->dbgfs,
tc, &tool_peer_spad_fops);
+
+ debugfs_create_file("link", S_IRUSR | S_IWUSR, tc->dbgfs,
+ tc, &tool_link_fops);
+
+ debugfs_create_file("link_event", S_IWUSR, tc->dbgfs,
+ tc, &tool_link_event_fops);
+
+ for (i = 0; i < tc->mw_count; i++) {
+ char buf[30];
+
+ snprintf(buf, sizeof(buf), "mw%d", i);
+ debugfs_create_file(buf, S_IRUSR | S_IWUSR, tc->dbgfs,
+ &tc->mws[i], &tool_mw_fops);
+
+ snprintf(buf, sizeof(buf), "peer_trans%d", i);
+ debugfs_create_file(buf, S_IRUSR | S_IWUSR, tc->dbgfs,
+ &tc->mws[i], &tool_peer_mw_trans_fops);
+ }
}
static int tool_probe(struct ntb_client *self, struct ntb_dev *ntb)
{
struct tool_ctx *tc;
int rc;
+ int i;
if (ntb_db_is_unsafe(ntb))
dev_dbg(&ntb->dev, "doorbell is unsafe\n");
@@ -485,13 +919,21 @@ static int tool_probe(struct ntb_client *self, struct ntb_dev *ntb)
if (ntb_spad_is_unsafe(ntb))
dev_dbg(&ntb->dev, "scratchpad is unsafe\n");
- tc = kmalloc(sizeof(*tc), GFP_KERNEL);
+ tc = kzalloc(sizeof(*tc), GFP_KERNEL);
if (!tc) {
rc = -ENOMEM;
goto err_tc;
}
tc->ntb = ntb;
+ init_waitqueue_head(&tc->link_wq);
+
+ tc->mw_count = min(ntb_mw_count(tc->ntb), MAX_MWS);
+ for (i = 0; i < tc->mw_count; i++) {
+ rc = tool_init_mw(tc, i);
+ if (rc)
+ goto err_ctx;
+ }
tool_setup_dbgfs(tc);
@@ -505,6 +947,7 @@ static int tool_probe(struct ntb_client *self, struct ntb_dev *ntb)
return 0;
err_ctx:
+ tool_free_mws(tc);
debugfs_remove_recursive(tc->dbgfs);
kfree(tc);
err_tc:
@@ -515,6 +958,8 @@ static void tool_remove(struct ntb_client *self, struct ntb_dev *ntb)
{
struct tool_ctx *tc = ntb->ctx;
+ tool_free_mws(tc);
+
ntb_clear_ctx(ntb);
ntb_link_disable(ntb);
diff --git a/drivers/nvdimm/btt.c b/drivers/nvdimm/btt.c
index 9dce03f420eb..368795aad5c9 100644
--- a/drivers/nvdimm/btt.c
+++ b/drivers/nvdimm/btt.c
@@ -1133,11 +1133,11 @@ static int btt_write_pg(struct btt *btt, struct bio_integrity_payload *bip,
static int btt_do_bvec(struct btt *btt, struct bio_integrity_payload *bip,
struct page *page, unsigned int len, unsigned int off,
- int rw, sector_t sector)
+ bool is_write, sector_t sector)
{
int ret;
- if (rw == READ) {
+ if (!is_write) {
ret = btt_read_pg(btt, bip, page, off, sector, len);
flush_dcache_page(page);
} else {
@@ -1155,7 +1155,7 @@ static blk_qc_t btt_make_request(struct request_queue *q, struct bio *bio)
struct bvec_iter iter;
unsigned long start;
struct bio_vec bvec;
- int err = 0, rw;
+ int err = 0;
bool do_acct;
/*
@@ -1170,7 +1170,6 @@ static blk_qc_t btt_make_request(struct request_queue *q, struct bio *bio)
}
do_acct = nd_iostat_start(bio, &start);
- rw = bio_data_dir(bio);
bio_for_each_segment(bvec, bio, iter) {
unsigned int len = bvec.bv_len;
@@ -1181,11 +1180,12 @@ static blk_qc_t btt_make_request(struct request_queue *q, struct bio *bio)
BUG_ON(len % btt->sector_size);
err = btt_do_bvec(btt, bip, bvec.bv_page, len, bvec.bv_offset,
- rw, iter.bi_sector);
+ op_is_write(bio_op(bio)), iter.bi_sector);
if (err) {
dev_info(&btt->nd_btt->dev,
"io error in %s sector %lld, len %d,\n",
- (rw == READ) ? "READ" : "WRITE",
+ (op_is_write(bio_op(bio))) ? "WRITE" :
+ "READ",
(unsigned long long) iter.bi_sector, len);
bio->bi_error = err;
break;
@@ -1200,12 +1200,12 @@ out:
}
static int btt_rw_page(struct block_device *bdev, sector_t sector,
- struct page *page, int rw)
+ struct page *page, bool is_write)
{
struct btt *btt = bdev->bd_disk->private_data;
- btt_do_bvec(btt, NULL, page, PAGE_SIZE, 0, rw, sector);
- page_endio(page, rw & WRITE, 0);
+ btt_do_bvec(btt, NULL, page, PAGE_SIZE, 0, is_write, sector);
+ page_endio(page, is_write, 0);
return 0;
}
@@ -1269,6 +1269,7 @@ static int btt_blk_init(struct btt *btt)
}
}
set_capacity(btt->btt_disk, btt->nlba * btt->sector_size >> 9);
+ btt->nd_btt->size = btt->nlba * (u64)btt->sector_size;
revalidate_disk(btt->btt_disk);
return 0;
diff --git a/drivers/nvdimm/btt_devs.c b/drivers/nvdimm/btt_devs.c
index 3fa7919f94a8..97dd2925ed6e 100644
--- a/drivers/nvdimm/btt_devs.c
+++ b/drivers/nvdimm/btt_devs.c
@@ -140,10 +140,30 @@ static ssize_t namespace_store(struct device *dev,
}
static DEVICE_ATTR_RW(namespace);
+static ssize_t size_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct nd_btt *nd_btt = to_nd_btt(dev);
+ ssize_t rc;
+
+ device_lock(dev);
+ if (dev->driver)
+ rc = sprintf(buf, "%llu\n", nd_btt->size);
+ else {
+ /* no size to convey if the btt instance is disabled */
+ rc = -ENXIO;
+ }
+ device_unlock(dev);
+
+ return rc;
+}
+static DEVICE_ATTR_RO(size);
+
static struct attribute *nd_btt_attributes[] = {
&dev_attr_sector_size.attr,
&dev_attr_namespace.attr,
&dev_attr_uuid.attr,
+ &dev_attr_size.attr,
NULL,
};
diff --git a/drivers/nvdimm/nd.h b/drivers/nvdimm/nd.h
index 40476399d227..8024a0ef86d3 100644
--- a/drivers/nvdimm/nd.h
+++ b/drivers/nvdimm/nd.h
@@ -143,6 +143,7 @@ struct nd_btt {
struct nd_namespace_common *ndns;
struct btt *btt;
unsigned long lbasize;
+ u64 size;
u8 *uuid;
int id;
};
diff --git a/drivers/nvdimm/pmem.c b/drivers/nvdimm/pmem.c
index b511099457db..571a6c7ee2fc 100644
--- a/drivers/nvdimm/pmem.c
+++ b/drivers/nvdimm/pmem.c
@@ -67,7 +67,7 @@ static void pmem_clear_poison(struct pmem_device *pmem, phys_addr_t offset,
}
static int pmem_do_bvec(struct pmem_device *pmem, struct page *page,
- unsigned int len, unsigned int off, int rw,
+ unsigned int len, unsigned int off, bool is_write,
sector_t sector)
{
int rc = 0;
@@ -79,7 +79,7 @@ static int pmem_do_bvec(struct pmem_device *pmem, struct page *page,
if (unlikely(is_bad_pmem(&pmem->bb, sector, len)))
bad_pmem = true;
- if (rw == READ) {
+ if (!is_write) {
if (unlikely(bad_pmem))
rc = -EIO;
else {
@@ -128,13 +128,13 @@ static blk_qc_t pmem_make_request(struct request_queue *q, struct bio *bio)
struct pmem_device *pmem = q->queuedata;
struct nd_region *nd_region = to_region(pmem);
- if (bio->bi_rw & REQ_FLUSH)
+ if (bio->bi_opf & REQ_FLUSH)
nvdimm_flush(nd_region);
do_acct = nd_iostat_start(bio, &start);
bio_for_each_segment(bvec, bio, iter) {
rc = pmem_do_bvec(pmem, bvec.bv_page, bvec.bv_len,
- bvec.bv_offset, bio_data_dir(bio),
+ bvec.bv_offset, op_is_write(bio_op(bio)),
iter.bi_sector);
if (rc) {
bio->bi_error = rc;
@@ -144,7 +144,7 @@ static blk_qc_t pmem_make_request(struct request_queue *q, struct bio *bio)
if (do_acct)
nd_iostat_end(bio, start);
- if (bio->bi_rw & REQ_FUA)
+ if (bio->bi_opf & REQ_FUA)
nvdimm_flush(nd_region);
bio_endio(bio);
@@ -152,12 +152,12 @@ static blk_qc_t pmem_make_request(struct request_queue *q, struct bio *bio)
}
static int pmem_rw_page(struct block_device *bdev, sector_t sector,
- struct page *page, int rw)
+ struct page *page, bool is_write)
{
struct pmem_device *pmem = bdev->bd_queue->queuedata;
int rc;
- rc = pmem_do_bvec(pmem, page, PAGE_SIZE, 0, rw, sector);
+ rc = pmem_do_bvec(pmem, page, PAGE_SIZE, 0, is_write, sector);
/*
* The ->rw_page interface is subtle and tricky. The core
@@ -166,7 +166,7 @@ static int pmem_rw_page(struct block_device *bdev, sector_t sector,
* caused by double completion.
*/
if (rc == 0)
- page_endio(page, rw & WRITE, 0);
+ page_endio(page, is_write, 0);
return rc;
}
diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index d7c33f9361aa..8dcf5a960951 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -1543,15 +1543,10 @@ static void nvme_disable_io_queues(struct nvme_dev *dev)
reinit_completion(&dev->ioq_wait);
retry:
timeout = ADMIN_TIMEOUT;
- for (; i > 0; i--) {
- struct nvme_queue *nvmeq = dev->queues[i];
-
- if (!pass)
- nvme_suspend_queue(nvmeq);
- if (nvme_delete_queue(nvmeq, opcode))
+ for (; i > 0; i--, sent++)
+ if (nvme_delete_queue(dev->queues[i], opcode))
break;
- ++sent;
- }
+
while (sent--) {
timeout = wait_for_completion_io_timeout(&dev->ioq_wait, timeout);
if (timeout == 0)
@@ -1693,11 +1688,12 @@ static void nvme_dev_disable(struct nvme_dev *dev, bool shutdown)
nvme_stop_queues(&dev->ctrl);
csts = readl(dev->bar + NVME_REG_CSTS);
}
+
+ for (i = dev->queue_count - 1; i > 0; i--)
+ nvme_suspend_queue(dev->queues[i]);
+
if (csts & NVME_CSTS_CFS || !(csts & NVME_CSTS_RDY)) {
- for (i = dev->queue_count - 1; i >= 0; i--) {
- struct nvme_queue *nvmeq = dev->queues[i];
- nvme_suspend_queue(nvmeq);
- }
+ nvme_suspend_queue(dev->queues[0]);
} else {
nvme_disable_io_queues(dev);
nvme_disable_admin_queue(dev, shutdown);
diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c
index 3e3ce2b0424e..8d2875b4c56d 100644
--- a/drivers/nvme/host/rdma.c
+++ b/drivers/nvme/host/rdma.c
@@ -12,13 +12,11 @@
* more details.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-#include <linux/delay.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/err.h>
#include <linux/string.h>
-#include <linux/jiffies.h>
#include <linux/atomic.h>
#include <linux/blk-mq.h>
#include <linux/types.h>
@@ -26,7 +24,6 @@
#include <linux/mutex.h>
#include <linux/scatterlist.h>
#include <linux/nvme.h>
-#include <linux/t10-pi.h>
#include <asm/unaligned.h>
#include <rdma/ib_verbs.h>
@@ -169,7 +166,6 @@ MODULE_PARM_DESC(register_always,
static int nvme_rdma_cm_handler(struct rdma_cm_id *cm_id,
struct rdma_cm_event *event);
static void nvme_rdma_recv_done(struct ib_cq *cq, struct ib_wc *wc);
-static int __nvme_rdma_del_ctrl(struct nvme_rdma_ctrl *ctrl);
/* XXX: really should move to a generic header sooner or later.. */
static inline void put_unaligned_le24(u32 val, u8 *p)
@@ -687,11 +683,6 @@ static void nvme_rdma_free_ctrl(struct nvme_ctrl *nctrl)
list_del(&ctrl->list);
mutex_unlock(&nvme_rdma_ctrl_mutex);
- if (ctrl->ctrl.tagset) {
- blk_cleanup_queue(ctrl->ctrl.connect_q);
- blk_mq_free_tag_set(&ctrl->tag_set);
- nvme_rdma_dev_put(ctrl->device);
- }
kfree(ctrl->queues);
nvmf_free_options(nctrl->opts);
free_ctrl:
@@ -748,8 +739,11 @@ static void nvme_rdma_reconnect_ctrl_work(struct work_struct *work)
changed = nvme_change_ctrl_state(&ctrl->ctrl, NVME_CTRL_LIVE);
WARN_ON_ONCE(!changed);
- if (ctrl->queue_count > 1)
+ if (ctrl->queue_count > 1) {
nvme_start_queues(&ctrl->ctrl);
+ nvme_queue_scan(&ctrl->ctrl);
+ nvme_queue_async_events(&ctrl->ctrl);
+ }
dev_info(ctrl->ctrl.device, "Successfully reconnected\n");
@@ -1269,7 +1263,7 @@ static int nvme_rdma_route_resolved(struct nvme_rdma_queue *queue)
{
struct nvme_rdma_ctrl *ctrl = queue->ctrl;
struct rdma_conn_param param = { };
- struct nvme_rdma_cm_req priv;
+ struct nvme_rdma_cm_req priv = { };
int ret;
param.qp_num = queue->qp->qp_num;
@@ -1318,37 +1312,39 @@ out_destroy_queue_ib:
* that caught the event. Since we hold the callout until the controller
* deletion is completed, we'll deadlock if the controller deletion will
* call rdma_destroy_id on this queue's cm_id. Thus, we claim ownership
- * of destroying this queue before-hand, destroy the queue resources
- * after the controller deletion completed with the exception of destroying
- * the cm_id implicitely by returning a non-zero rc to the callout.
+ * of destroying this queue before-hand, destroy the queue resources,
+ * then queue the controller deletion which won't destroy this queue and
+ * we destroy the cm_id implicitely by returning a non-zero rc to the callout.
*/
static int nvme_rdma_device_unplug(struct nvme_rdma_queue *queue)
{
struct nvme_rdma_ctrl *ctrl = queue->ctrl;
- int ret, ctrl_deleted = 0;
+ int ret;
- /* First disable the queue so ctrl delete won't free it */
- if (!test_and_clear_bit(NVME_RDMA_Q_CONNECTED, &queue->flags))
- goto out;
+ /* Own the controller deletion */
+ if (!nvme_change_ctrl_state(&ctrl->ctrl, NVME_CTRL_DELETING))
+ return 0;
- /* delete the controller */
- ret = __nvme_rdma_del_ctrl(ctrl);
- if (!ret) {
- dev_warn(ctrl->ctrl.device,
- "Got rdma device removal event, deleting ctrl\n");
- flush_work(&ctrl->delete_work);
+ dev_warn(ctrl->ctrl.device,
+ "Got rdma device removal event, deleting ctrl\n");
- /* Return non-zero so the cm_id will destroy implicitly */
- ctrl_deleted = 1;
+ /* Get rid of reconnect work if its running */
+ cancel_delayed_work_sync(&ctrl->reconnect_work);
+ /* Disable the queue so ctrl delete won't free it */
+ if (test_and_clear_bit(NVME_RDMA_Q_CONNECTED, &queue->flags)) {
/* Free this queue ourselves */
- rdma_disconnect(queue->cm_id);
- ib_drain_qp(queue->qp);
+ nvme_rdma_stop_queue(queue);
nvme_rdma_destroy_queue_ib(queue);
+
+ /* Return non-zero so the cm_id will destroy implicitly */
+ ret = 1;
}
-out:
- return ctrl_deleted;
+ /* Queue controller deletion */
+ queue_work(nvme_rdma_wq, &ctrl->delete_work);
+ flush_work(&ctrl->delete_work);
+ return ret;
}
static int nvme_rdma_cm_handler(struct rdma_cm_id *cm_id,
@@ -1648,7 +1644,7 @@ static void nvme_rdma_shutdown_ctrl(struct nvme_rdma_ctrl *ctrl)
nvme_rdma_free_io_queues(ctrl);
}
- if (ctrl->ctrl.state == NVME_CTRL_LIVE)
+ if (test_bit(NVME_RDMA_Q_CONNECTED, &ctrl->queues[0].flags))
nvme_shutdown_ctrl(&ctrl->ctrl);
blk_mq_stop_hw_queues(ctrl->ctrl.admin_q);
@@ -1657,15 +1653,27 @@ static void nvme_rdma_shutdown_ctrl(struct nvme_rdma_ctrl *ctrl)
nvme_rdma_destroy_admin_queue(ctrl);
}
+static void __nvme_rdma_remove_ctrl(struct nvme_rdma_ctrl *ctrl, bool shutdown)
+{
+ nvme_uninit_ctrl(&ctrl->ctrl);
+ if (shutdown)
+ nvme_rdma_shutdown_ctrl(ctrl);
+
+ if (ctrl->ctrl.tagset) {
+ blk_cleanup_queue(ctrl->ctrl.connect_q);
+ blk_mq_free_tag_set(&ctrl->tag_set);
+ nvme_rdma_dev_put(ctrl->device);
+ }
+
+ nvme_put_ctrl(&ctrl->ctrl);
+}
+
static void nvme_rdma_del_ctrl_work(struct work_struct *work)
{
struct nvme_rdma_ctrl *ctrl = container_of(work,
struct nvme_rdma_ctrl, delete_work);
- nvme_remove_namespaces(&ctrl->ctrl);
- nvme_rdma_shutdown_ctrl(ctrl);
- nvme_uninit_ctrl(&ctrl->ctrl);
- nvme_put_ctrl(&ctrl->ctrl);
+ __nvme_rdma_remove_ctrl(ctrl, true);
}
static int __nvme_rdma_del_ctrl(struct nvme_rdma_ctrl *ctrl)
@@ -1698,9 +1706,7 @@ static void nvme_rdma_remove_ctrl_work(struct work_struct *work)
struct nvme_rdma_ctrl *ctrl = container_of(work,
struct nvme_rdma_ctrl, delete_work);
- nvme_remove_namespaces(&ctrl->ctrl);
- nvme_uninit_ctrl(&ctrl->ctrl);
- nvme_put_ctrl(&ctrl->ctrl);
+ __nvme_rdma_remove_ctrl(ctrl, false);
}
static void nvme_rdma_reset_ctrl_work(struct work_struct *work)
@@ -1739,6 +1745,7 @@ static void nvme_rdma_reset_ctrl_work(struct work_struct *work)
if (ctrl->queue_count > 1) {
nvme_start_queues(&ctrl->ctrl);
nvme_queue_scan(&ctrl->ctrl);
+ nvme_queue_async_events(&ctrl->ctrl);
}
return;
diff --git a/drivers/nvme/target/admin-cmd.c b/drivers/nvme/target/admin-cmd.c
index 2fac17a5ad53..47c564b5a289 100644
--- a/drivers/nvme/target/admin-cmd.c
+++ b/drivers/nvme/target/admin-cmd.c
@@ -13,7 +13,6 @@
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/module.h>
-#include <linux/random.h>
#include <generated/utsrelease.h>
#include "nvmet.h"
@@ -83,7 +82,6 @@ static void nvmet_execute_identify_ctrl(struct nvmet_req *req)
{
struct nvmet_ctrl *ctrl = req->sq->ctrl;
struct nvme_id_ctrl *id;
- u64 serial;
u16 status = 0;
id = kzalloc(sizeof(*id), GFP_KERNEL);
@@ -96,10 +94,8 @@ static void nvmet_execute_identify_ctrl(struct nvmet_req *req)
id->vid = 0;
id->ssvid = 0;
- /* generate a random serial number as our controllers are ephemeral: */
- get_random_bytes(&serial, sizeof(serial));
memset(id->sn, ' ', sizeof(id->sn));
- snprintf(id->sn, sizeof(id->sn), "%llx", serial);
+ snprintf(id->sn, sizeof(id->sn), "%llx", ctrl->serial);
memset(id->mn, ' ', sizeof(id->mn));
strncpy((char *)id->mn, "Linux", sizeof(id->mn));
diff --git a/drivers/nvme/target/core.c b/drivers/nvme/target/core.c
index 8a891ca53367..6559d5afa7bf 100644
--- a/drivers/nvme/target/core.c
+++ b/drivers/nvme/target/core.c
@@ -13,6 +13,7 @@
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/module.h>
+#include <linux/random.h>
#include "nvmet.h"
static struct nvmet_fabrics_ops *nvmet_transports[NVMF_TRTYPE_MAX];
@@ -728,6 +729,9 @@ u16 nvmet_alloc_ctrl(const char *subsysnqn, const char *hostnqn,
memcpy(ctrl->subsysnqn, subsysnqn, NVMF_NQN_SIZE);
memcpy(ctrl->hostnqn, hostnqn, NVMF_NQN_SIZE);
+ /* generate a random serial number as our controllers are ephemeral: */
+ get_random_bytes(&ctrl->serial, sizeof(ctrl->serial));
+
kref_init(&ctrl->ref);
ctrl->subsys = subsys;
diff --git a/drivers/nvme/target/loop.c b/drivers/nvme/target/loop.c
index 94e782987cc9..7affd40a6b33 100644
--- a/drivers/nvme/target/loop.c
+++ b/drivers/nvme/target/loop.c
@@ -414,9 +414,8 @@ static void nvme_loop_del_ctrl_work(struct work_struct *work)
struct nvme_loop_ctrl *ctrl = container_of(work,
struct nvme_loop_ctrl, delete_work);
- nvme_remove_namespaces(&ctrl->ctrl);
- nvme_loop_shutdown_ctrl(ctrl);
nvme_uninit_ctrl(&ctrl->ctrl);
+ nvme_loop_shutdown_ctrl(ctrl);
nvme_put_ctrl(&ctrl->ctrl);
}
@@ -501,7 +500,6 @@ out_free_queues:
nvme_loop_destroy_admin_queue(ctrl);
out_disable:
dev_warn(ctrl->ctrl.device, "Removing after reset failure\n");
- nvme_remove_namespaces(&ctrl->ctrl);
nvme_uninit_ctrl(&ctrl->ctrl);
nvme_put_ctrl(&ctrl->ctrl);
}
diff --git a/drivers/nvme/target/nvmet.h b/drivers/nvme/target/nvmet.h
index 57dd6d834c28..76b6eedccaf9 100644
--- a/drivers/nvme/target/nvmet.h
+++ b/drivers/nvme/target/nvmet.h
@@ -113,6 +113,7 @@ struct nvmet_ctrl {
struct mutex lock;
u64 cap;
+ u64 serial;
u32 cc;
u32 csts;
diff --git a/drivers/nvme/target/rdma.c b/drivers/nvme/target/rdma.c
index e06d504bdf0c..b4d648536c3e 100644
--- a/drivers/nvme/target/rdma.c
+++ b/drivers/nvme/target/rdma.c
@@ -77,6 +77,7 @@ enum nvmet_rdma_queue_state {
NVMET_RDMA_Q_CONNECTING,
NVMET_RDMA_Q_LIVE,
NVMET_RDMA_Q_DISCONNECTING,
+ NVMET_RDMA_IN_DEVICE_REMOVAL,
};
struct nvmet_rdma_queue {
@@ -615,15 +616,10 @@ static u16 nvmet_rdma_map_sgl_keyed(struct nvmet_rdma_rsp *rsp,
if (!len)
return 0;
- /* use the already allocated data buffer if possible */
- if (len <= NVMET_RDMA_INLINE_DATA_SIZE && rsp->queue->host_qid) {
- nvmet_rdma_use_inline_sg(rsp, len, 0);
- } else {
- status = nvmet_rdma_alloc_sgl(&rsp->req.sg, &rsp->req.sg_cnt,
- len);
- if (status)
- return status;
- }
+ status = nvmet_rdma_alloc_sgl(&rsp->req.sg, &rsp->req.sg_cnt,
+ len);
+ if (status)
+ return status;
ret = rdma_rw_ctx_init(&rsp->rw, cm_id->qp, cm_id->port_num,
rsp->req.sg, rsp->req.sg_cnt, 0, addr, key,
@@ -984,7 +980,10 @@ static void nvmet_rdma_release_queue_work(struct work_struct *w)
struct nvmet_rdma_device *dev = queue->dev;
nvmet_rdma_free_queue(queue);
- rdma_destroy_id(cm_id);
+
+ if (queue->state != NVMET_RDMA_IN_DEVICE_REMOVAL)
+ rdma_destroy_id(cm_id);
+
kref_put(&dev->ref, nvmet_rdma_free_dev);
}
@@ -1233,8 +1232,9 @@ static void __nvmet_rdma_queue_disconnect(struct nvmet_rdma_queue *queue)
switch (queue->state) {
case NVMET_RDMA_Q_CONNECTING:
case NVMET_RDMA_Q_LIVE:
- disconnect = true;
queue->state = NVMET_RDMA_Q_DISCONNECTING;
+ case NVMET_RDMA_IN_DEVICE_REMOVAL:
+ disconnect = true;
break;
case NVMET_RDMA_Q_DISCONNECTING:
break;
@@ -1272,6 +1272,62 @@ static void nvmet_rdma_queue_connect_fail(struct rdma_cm_id *cm_id,
schedule_work(&queue->release_work);
}
+/**
+ * nvme_rdma_device_removal() - Handle RDMA device removal
+ * @queue: nvmet rdma queue (cm id qp_context)
+ * @addr: nvmet address (cm_id context)
+ *
+ * DEVICE_REMOVAL event notifies us that the RDMA device is about
+ * to unplug so we should take care of destroying our RDMA resources.
+ * This event will be generated for each allocated cm_id.
+ *
+ * Note that this event can be generated on a normal queue cm_id
+ * and/or a device bound listener cm_id (where in this case
+ * queue will be null).
+ *
+ * we claim ownership on destroying the cm_id. For queues we move
+ * the queue state to NVMET_RDMA_IN_DEVICE_REMOVAL and for port
+ * we nullify the priv to prevent double cm_id destruction and destroying
+ * the cm_id implicitely by returning a non-zero rc to the callout.
+ */
+static int nvmet_rdma_device_removal(struct rdma_cm_id *cm_id,
+ struct nvmet_rdma_queue *queue)
+{
+ unsigned long flags;
+
+ if (!queue) {
+ struct nvmet_port *port = cm_id->context;
+
+ /*
+ * This is a listener cm_id. Make sure that
+ * future remove_port won't invoke a double
+ * cm_id destroy. use atomic xchg to make sure
+ * we don't compete with remove_port.
+ */
+ if (xchg(&port->priv, NULL) != cm_id)
+ return 0;
+ } else {
+ /*
+ * This is a queue cm_id. Make sure that
+ * release queue will not destroy the cm_id
+ * and schedule all ctrl queues removal (only
+ * if the queue is not disconnecting already).
+ */
+ spin_lock_irqsave(&queue->state_lock, flags);
+ if (queue->state != NVMET_RDMA_Q_DISCONNECTING)
+ queue->state = NVMET_RDMA_IN_DEVICE_REMOVAL;
+ spin_unlock_irqrestore(&queue->state_lock, flags);
+ nvmet_rdma_queue_disconnect(queue);
+ flush_scheduled_work();
+ }
+
+ /*
+ * We need to return 1 so that the core will destroy
+ * it's own ID. What a great API design..
+ */
+ return 1;
+}
+
static int nvmet_rdma_cm_handler(struct rdma_cm_id *cm_id,
struct rdma_cm_event *event)
{
@@ -1294,20 +1350,11 @@ static int nvmet_rdma_cm_handler(struct rdma_cm_id *cm_id,
break;
case RDMA_CM_EVENT_ADDR_CHANGE:
case RDMA_CM_EVENT_DISCONNECTED:
- case RDMA_CM_EVENT_DEVICE_REMOVAL:
case RDMA_CM_EVENT_TIMEWAIT_EXIT:
- /*
- * We can get the device removal callback even for a
- * CM ID that we aren't actually using. In that case
- * the context pointer is NULL, so we shouldn't try
- * to disconnect a non-existing queue. But we also
- * need to return 1 so that the core will destroy
- * it's own ID. What a great API design..
- */
- if (queue)
- nvmet_rdma_queue_disconnect(queue);
- else
- ret = 1;
+ nvmet_rdma_queue_disconnect(queue);
+ break;
+ case RDMA_CM_EVENT_DEVICE_REMOVAL:
+ ret = nvmet_rdma_device_removal(cm_id, queue);
break;
case RDMA_CM_EVENT_REJECTED:
case RDMA_CM_EVENT_UNREACHABLE:
@@ -1396,9 +1443,10 @@ out_destroy_id:
static void nvmet_rdma_remove_port(struct nvmet_port *port)
{
- struct rdma_cm_id *cm_id = port->priv;
+ struct rdma_cm_id *cm_id = xchg(&port->priv, NULL);
- rdma_destroy_id(cm_id);
+ if (cm_id)
+ rdma_destroy_id(cm_id);
}
static struct nvmet_fabrics_ops nvmet_rdma_ops = {
diff --git a/drivers/of/platform.c b/drivers/of/platform.c
index 765390e3ed8d..8aa197691074 100644
--- a/drivers/of/platform.c
+++ b/drivers/of/platform.c
@@ -499,8 +499,24 @@ EXPORT_SYMBOL_GPL(of_platform_default_populate);
static int __init of_platform_default_populate_init(void)
{
- if (of_have_populated_dt())
- of_platform_default_populate(NULL, NULL, NULL);
+ struct device_node *node;
+
+ if (!of_have_populated_dt())
+ return -ENODEV;
+
+ /*
+ * Handle ramoops explicitly, since it is inside /reserved-memory,
+ * which lacks a "compatible" property.
+ */
+ node = of_find_node_by_path("/reserved-memory");
+ if (node) {
+ node = of_find_compatible_node(node, NULL, "ramoops");
+ if (node)
+ of_platform_device_create(node, NULL, NULL);
+ }
+
+ /* Populate everything else. */
+ of_platform_default_populate(NULL, NULL, NULL);
return 0;
}
diff --git a/drivers/parisc/ccio-dma.c b/drivers/parisc/ccio-dma.c
index e24b05996a1b..3ed6238f8f6e 100644
--- a/drivers/parisc/ccio-dma.c
+++ b/drivers/parisc/ccio-dma.c
@@ -790,7 +790,7 @@ ccio_map_single(struct device *dev, void *addr, size_t size,
static dma_addr_t
ccio_map_page(struct device *dev, struct page *page, unsigned long offset,
size_t size, enum dma_data_direction direction,
- struct dma_attrs *attrs)
+ unsigned long attrs)
{
return ccio_map_single(dev, page_address(page) + offset, size,
direction);
@@ -806,7 +806,7 @@ ccio_map_page(struct device *dev, struct page *page, unsigned long offset,
*/
static void
ccio_unmap_page(struct device *dev, dma_addr_t iova, size_t size,
- enum dma_data_direction direction, struct dma_attrs *attrs)
+ enum dma_data_direction direction, unsigned long attrs)
{
struct ioc *ioc;
unsigned long flags;
@@ -844,7 +844,7 @@ ccio_unmap_page(struct device *dev, dma_addr_t iova, size_t size,
*/
static void *
ccio_alloc(struct device *dev, size_t size, dma_addr_t *dma_handle, gfp_t flag,
- struct dma_attrs *attrs)
+ unsigned long attrs)
{
void *ret;
#if 0
@@ -878,9 +878,9 @@ ccio_alloc(struct device *dev, size_t size, dma_addr_t *dma_handle, gfp_t flag,
*/
static void
ccio_free(struct device *dev, size_t size, void *cpu_addr,
- dma_addr_t dma_handle, struct dma_attrs *attrs)
+ dma_addr_t dma_handle, unsigned long attrs)
{
- ccio_unmap_page(dev, dma_handle, size, 0, NULL);
+ ccio_unmap_page(dev, dma_handle, size, 0, 0);
free_pages((unsigned long)cpu_addr, get_order(size));
}
@@ -907,7 +907,7 @@ ccio_free(struct device *dev, size_t size, void *cpu_addr,
*/
static int
ccio_map_sg(struct device *dev, struct scatterlist *sglist, int nents,
- enum dma_data_direction direction, struct dma_attrs *attrs)
+ enum dma_data_direction direction, unsigned long attrs)
{
struct ioc *ioc;
int coalesced, filled = 0;
@@ -984,7 +984,7 @@ ccio_map_sg(struct device *dev, struct scatterlist *sglist, int nents,
*/
static void
ccio_unmap_sg(struct device *dev, struct scatterlist *sglist, int nents,
- enum dma_data_direction direction, struct dma_attrs *attrs)
+ enum dma_data_direction direction, unsigned long attrs)
{
struct ioc *ioc;
@@ -1004,7 +1004,7 @@ ccio_unmap_sg(struct device *dev, struct scatterlist *sglist, int nents,
ioc->usg_pages += sg_dma_len(sglist) >> PAGE_SHIFT;
#endif
ccio_unmap_page(dev, sg_dma_address(sglist),
- sg_dma_len(sglist), direction, NULL);
+ sg_dma_len(sglist), direction, 0);
++sglist;
}
diff --git a/drivers/parisc/sba_iommu.c b/drivers/parisc/sba_iommu.c
index 42ec4600b7e4..151b86b6d2e2 100644
--- a/drivers/parisc/sba_iommu.c
+++ b/drivers/parisc/sba_iommu.c
@@ -783,7 +783,7 @@ sba_map_single(struct device *dev, void *addr, size_t size,
static dma_addr_t
sba_map_page(struct device *dev, struct page *page, unsigned long offset,
size_t size, enum dma_data_direction direction,
- struct dma_attrs *attrs)
+ unsigned long attrs)
{
return sba_map_single(dev, page_address(page) + offset, size,
direction);
@@ -801,7 +801,7 @@ sba_map_page(struct device *dev, struct page *page, unsigned long offset,
*/
static void
sba_unmap_page(struct device *dev, dma_addr_t iova, size_t size,
- enum dma_data_direction direction, struct dma_attrs *attrs)
+ enum dma_data_direction direction, unsigned long attrs)
{
struct ioc *ioc;
#if DELAYED_RESOURCE_CNT > 0
@@ -876,7 +876,7 @@ sba_unmap_page(struct device *dev, dma_addr_t iova, size_t size,
* See Documentation/DMA-API-HOWTO.txt
*/
static void *sba_alloc(struct device *hwdev, size_t size, dma_addr_t *dma_handle,
- gfp_t gfp, struct dma_attrs *attrs)
+ gfp_t gfp, unsigned long attrs)
{
void *ret;
@@ -908,9 +908,9 @@ static void *sba_alloc(struct device *hwdev, size_t size, dma_addr_t *dma_handle
*/
static void
sba_free(struct device *hwdev, size_t size, void *vaddr,
- dma_addr_t dma_handle, struct dma_attrs *attrs)
+ dma_addr_t dma_handle, unsigned long attrs)
{
- sba_unmap_page(hwdev, dma_handle, size, 0, NULL);
+ sba_unmap_page(hwdev, dma_handle, size, 0, 0);
free_pages((unsigned long) vaddr, get_order(size));
}
@@ -943,7 +943,7 @@ int dump_run_sg = 0;
*/
static int
sba_map_sg(struct device *dev, struct scatterlist *sglist, int nents,
- enum dma_data_direction direction, struct dma_attrs *attrs)
+ enum dma_data_direction direction, unsigned long attrs)
{
struct ioc *ioc;
int coalesced, filled = 0;
@@ -1026,7 +1026,7 @@ sba_map_sg(struct device *dev, struct scatterlist *sglist, int nents,
*/
static void
sba_unmap_sg(struct device *dev, struct scatterlist *sglist, int nents,
- enum dma_data_direction direction, struct dma_attrs *attrs)
+ enum dma_data_direction direction, unsigned long attrs)
{
struct ioc *ioc;
#ifdef ASSERT_PDIR_SANITY
@@ -1051,7 +1051,7 @@ sba_unmap_sg(struct device *dev, struct scatterlist *sglist, int nents,
while (sg_dma_len(sglist) && nents--) {
sba_unmap_page(dev, sg_dma_address(sglist), sg_dma_len(sglist),
- direction, NULL);
+ direction, 0);
#ifdef SBA_COLLECT_STATS
ioc->usg_pages += ((sg_dma_address(sglist) & ~IOVP_MASK) + sg_dma_len(sglist) + IOVP_SIZE - 1) >> PAGE_SHIFT;
ioc->usingle_calls--; /* kluge since call is unmap_sg() */
diff --git a/drivers/pci/ecam.c b/drivers/pci/ecam.c
index 66e0d718472f..43ed08dd8b01 100644
--- a/drivers/pci/ecam.c
+++ b/drivers/pci/ecam.c
@@ -27,7 +27,7 @@
* since we have enough virtual address range available. On 32-bit, we
* ioremap the config space for each bus individually.
*/
-static const bool per_bus_mapping = !config_enabled(CONFIG_64BIT);
+static const bool per_bus_mapping = !IS_ENABLED(CONFIG_64BIT);
/*
* Create a PCI config space window
diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c
index 6a33ddcfa20b..a46b585fae31 100644
--- a/drivers/pci/hotplug/acpiphp_glue.c
+++ b/drivers/pci/hotplug/acpiphp_glue.c
@@ -675,7 +675,8 @@ static void acpiphp_check_bridge(struct acpiphp_bridge *bridge)
if (bridge->is_going_away)
return;
- pm_runtime_get_sync(&bridge->pci_dev->dev);
+ if (bridge->pci_dev)
+ pm_runtime_get_sync(&bridge->pci_dev->dev);
list_for_each_entry(slot, &bridge->slots, node) {
struct pci_bus *bus = slot->bus;
@@ -697,7 +698,8 @@ static void acpiphp_check_bridge(struct acpiphp_bridge *bridge)
}
}
- pm_runtime_put(&bridge->pci_dev->dev);
+ if (bridge->pci_dev)
+ pm_runtime_put(&bridge->pci_dev->dev);
}
/*
diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
index a02981efdad5..eafa6138a6b8 100644
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -1411,6 +1411,8 @@ struct irq_domain *pci_msi_create_irq_domain(struct fwnode_handle *fwnode,
if (info->flags & MSI_FLAG_USE_DEF_CHIP_OPS)
pci_msi_domain_update_chip_ops(info);
+ info->flags |= MSI_FLAG_ACTIVATE_EARLY;
+
domain = msi_create_irq_domain(fwnode, info, parent);
if (!domain)
return NULL;
diff --git a/drivers/perf/arm_pmu.c b/drivers/perf/arm_pmu.c
index 6ccb994bdfcb..c494613c1909 100644
--- a/drivers/perf/arm_pmu.c
+++ b/drivers/perf/arm_pmu.c
@@ -688,7 +688,7 @@ static int cpu_pmu_request_irq(struct arm_pmu *cpu_pmu, irq_handler_t handler)
return 0;
}
-static DEFINE_MUTEX(arm_pmu_mutex);
+static DEFINE_SPINLOCK(arm_pmu_lock);
static LIST_HEAD(arm_pmu_list);
/*
@@ -701,7 +701,7 @@ static int arm_perf_starting_cpu(unsigned int cpu)
{
struct arm_pmu *pmu;
- mutex_lock(&arm_pmu_mutex);
+ spin_lock(&arm_pmu_lock);
list_for_each_entry(pmu, &arm_pmu_list, entry) {
if (!cpumask_test_cpu(cpu, &pmu->supported_cpus))
@@ -709,7 +709,7 @@ static int arm_perf_starting_cpu(unsigned int cpu)
if (pmu->reset)
pmu->reset(pmu);
}
- mutex_unlock(&arm_pmu_mutex);
+ spin_unlock(&arm_pmu_lock);
return 0;
}
@@ -821,9 +821,9 @@ static int cpu_pmu_init(struct arm_pmu *cpu_pmu)
if (!cpu_hw_events)
return -ENOMEM;
- mutex_lock(&arm_pmu_mutex);
+ spin_lock(&arm_pmu_lock);
list_add_tail(&cpu_pmu->entry, &arm_pmu_list);
- mutex_unlock(&arm_pmu_mutex);
+ spin_unlock(&arm_pmu_lock);
err = cpu_pm_pmu_register(cpu_pmu);
if (err)
@@ -859,9 +859,9 @@ static int cpu_pmu_init(struct arm_pmu *cpu_pmu)
return 0;
out_unregister:
- mutex_lock(&arm_pmu_mutex);
+ spin_lock(&arm_pmu_lock);
list_del(&cpu_pmu->entry);
- mutex_unlock(&arm_pmu_mutex);
+ spin_unlock(&arm_pmu_lock);
free_percpu(cpu_hw_events);
return err;
}
@@ -869,9 +869,9 @@ out_unregister:
static void cpu_pmu_destroy(struct arm_pmu *cpu_pmu)
{
cpu_pm_pmu_unregister(cpu_pmu);
- mutex_lock(&arm_pmu_mutex);
+ spin_lock(&arm_pmu_lock);
list_del(&cpu_pmu->entry);
- mutex_unlock(&arm_pmu_mutex);
+ spin_unlock(&arm_pmu_lock);
free_percpu(cpu_pmu->hw_events);
}
@@ -967,11 +967,12 @@ static int of_pmu_irq_cfg(struct arm_pmu *pmu)
/* If we didn't manage to parse anything, try the interrupt affinity */
if (cpumask_weight(&pmu->supported_cpus) == 0) {
- if (!using_spi) {
+ int irq = platform_get_irq(pdev, 0);
+
+ if (irq_is_percpu(irq)) {
/* If using PPIs, check the affinity of the partition */
- int ret, irq;
+ int ret;
- irq = platform_get_irq(pdev, 0);
ret = irq_get_percpu_devid_partition(irq, &pmu->supported_cpus);
if (ret) {
kfree(irqs);
diff --git a/drivers/pinctrl/intel/pinctrl-merrifield.c b/drivers/pinctrl/intel/pinctrl-merrifield.c
index eb4990ff26ca..7fb765642ee7 100644
--- a/drivers/pinctrl/intel/pinctrl-merrifield.c
+++ b/drivers/pinctrl/intel/pinctrl-merrifield.c
@@ -11,6 +11,7 @@
#include <linux/bitops.h>
#include <linux/err.h>
+#include <linux/io.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/pinctrl/pinconf.h>
diff --git a/drivers/pinctrl/meson/pinctrl-meson.c b/drivers/pinctrl/meson/pinctrl-meson.c
index 11623c6b0cb3..44e69c963f5d 100644
--- a/drivers/pinctrl/meson/pinctrl-meson.c
+++ b/drivers/pinctrl/meson/pinctrl-meson.c
@@ -727,13 +727,7 @@ static int meson_pinctrl_probe(struct platform_device *pdev)
return PTR_ERR(pc->pcdev);
}
- ret = meson_gpiolib_register(pc);
- if (ret) {
- pinctrl_unregister(pc->pcdev);
- return ret;
- }
-
- return 0;
+ return meson_gpiolib_register(pc);
}
static struct platform_driver meson_pinctrl_driver = {
diff --git a/drivers/pinctrl/pinctrl-amd.c b/drivers/pinctrl/pinctrl-amd.c
index 634b4d30eefb..b3e772390ab6 100644
--- a/drivers/pinctrl/pinctrl-amd.c
+++ b/drivers/pinctrl/pinctrl-amd.c
@@ -43,17 +43,6 @@ static int amd_gpio_direction_input(struct gpio_chip *gc, unsigned offset)
spin_lock_irqsave(&gpio_dev->lock, flags);
pin_reg = readl(gpio_dev->base + offset * 4);
- /*
- * Suppose BIOS or Bootloader sets specific debounce for the
- * GPIO. if not, set debounce to be 2.75ms and remove glitch.
- */
- if ((pin_reg & DB_TMR_OUT_MASK) == 0) {
- pin_reg |= 0xf;
- pin_reg |= BIT(DB_TMR_OUT_UNIT_OFF);
- pin_reg |= DB_TYPE_REMOVE_GLITCH << DB_CNTRL_OFF;
- pin_reg &= ~BIT(DB_TMR_LARGE_OFF);
- }
-
pin_reg &= ~BIT(OUTPUT_ENABLE_OFF);
writel(pin_reg, gpio_dev->base + offset * 4);
spin_unlock_irqrestore(&gpio_dev->lock, flags);
@@ -326,15 +315,6 @@ static void amd_gpio_irq_enable(struct irq_data *d)
spin_lock_irqsave(&gpio_dev->lock, flags);
pin_reg = readl(gpio_dev->base + (d->hwirq)*4);
- /*
- Suppose BIOS or Bootloader sets specific debounce for the
- GPIO. if not, set debounce to be 2.75ms.
- */
- if ((pin_reg & DB_TMR_OUT_MASK) == 0) {
- pin_reg |= 0xf;
- pin_reg |= BIT(DB_TMR_OUT_UNIT_OFF);
- pin_reg &= ~BIT(DB_TMR_LARGE_OFF);
- }
pin_reg |= BIT(INTERRUPT_ENABLE_OFF);
pin_reg |= BIT(INTERRUPT_MASK_OFF);
writel(pin_reg, gpio_dev->base + (d->hwirq)*4);
diff --git a/drivers/pinctrl/pinctrl-pistachio.c b/drivers/pinctrl/pinctrl-pistachio.c
index c6d410ef8de0..7bad200bd67c 100644
--- a/drivers/pinctrl/pinctrl-pistachio.c
+++ b/drivers/pinctrl/pinctrl-pistachio.c
@@ -1432,7 +1432,6 @@ static int pistachio_pinctrl_probe(struct platform_device *pdev)
{
struct pistachio_pinctrl *pctl;
struct resource *res;
- int ret;
pctl = devm_kzalloc(&pdev->dev, sizeof(*pctl), GFP_KERNEL);
if (!pctl)
@@ -1464,13 +1463,7 @@ static int pistachio_pinctrl_probe(struct platform_device *pdev)
return PTR_ERR(pctl->pctldev);
}
- ret = pistachio_gpio_register(pctl);
- if (ret < 0) {
- pinctrl_unregister(pctl->pctldev);
- return ret;
- }
-
- return 0;
+ return pistachio_gpio_register(pctl);
}
static struct platform_driver pistachio_pinctrl_driver = {
diff --git a/drivers/platform/chrome/cros_ec_proto.c b/drivers/platform/chrome/cros_ec_proto.c
index b6e161f71b26..6c084b266651 100644
--- a/drivers/platform/chrome/cros_ec_proto.c
+++ b/drivers/platform/chrome/cros_ec_proto.c
@@ -380,3 +380,20 @@ int cros_ec_cmd_xfer(struct cros_ec_device *ec_dev,
return ret;
}
EXPORT_SYMBOL(cros_ec_cmd_xfer);
+
+int cros_ec_cmd_xfer_status(struct cros_ec_device *ec_dev,
+ struct cros_ec_command *msg)
+{
+ int ret;
+
+ ret = cros_ec_cmd_xfer(ec_dev, msg);
+ if (ret < 0) {
+ dev_err(ec_dev->dev, "Command xfer error (err:%d)\n", ret);
+ } else if (msg->result != EC_RES_SUCCESS) {
+ dev_dbg(ec_dev->dev, "Command result (err: %d)\n", msg->result);
+ return -EPROTO;
+ }
+
+ return ret;
+}
+EXPORT_SYMBOL(cros_ec_cmd_xfer_status);
diff --git a/drivers/platform/x86/dell-wmi.c b/drivers/platform/x86/dell-wmi.c
index d2bc092defd7..da2fe18162e1 100644
--- a/drivers/platform/x86/dell-wmi.c
+++ b/drivers/platform/x86/dell-wmi.c
@@ -110,8 +110,8 @@ static const struct key_entry dell_wmi_keymap_type_0000[] __initconst = {
/* BIOS error detected */
{ KE_IGNORE, 0xe00d, { KEY_RESERVED } },
- /* Unknown, defined in ACPI DSDT */
- /* { KE_IGNORE, 0xe00e, { KEY_RESERVED } }, */
+ /* Battery was removed or inserted */
+ { KE_IGNORE, 0xe00e, { KEY_RESERVED } },
/* Wifi Catcher */
{ KE_KEY, 0xe011, { KEY_PROG2 } },
diff --git a/drivers/pnp/pnpbios/core.c b/drivers/pnp/pnpbios/core.c
index bedb361746a0..c38a5b9733c8 100644
--- a/drivers/pnp/pnpbios/core.c
+++ b/drivers/pnp/pnpbios/core.c
@@ -60,6 +60,7 @@
#include <linux/delay.h>
#include <linux/acpi.h>
#include <linux/freezer.h>
+#include <linux/kmod.h>
#include <linux/kthread.h>
#include <asm/page.h>
diff --git a/drivers/power/max17042_battery.c b/drivers/power/max17042_battery.c
index 9c65f134d447..da7a75f82489 100644
--- a/drivers/power/max17042_battery.c
+++ b/drivers/power/max17042_battery.c
@@ -457,13 +457,16 @@ static inline void max17042_write_model_data(struct max17042_chip *chip,
}
static inline void max17042_read_model_data(struct max17042_chip *chip,
- u8 addr, u32 *data, int size)
+ u8 addr, u16 *data, int size)
{
struct regmap *map = chip->regmap;
int i;
+ u32 tmp;
- for (i = 0; i < size; i++)
- regmap_read(map, addr + i, &data[i]);
+ for (i = 0; i < size; i++) {
+ regmap_read(map, addr + i, &tmp);
+ data[i] = (u16)tmp;
+ }
}
static inline int max17042_model_data_compare(struct max17042_chip *chip,
@@ -486,7 +489,7 @@ static int max17042_init_model(struct max17042_chip *chip)
{
int ret;
int table_size = ARRAY_SIZE(chip->pdata->config_data->cell_char_tbl);
- u32 *temp_data;
+ u16 *temp_data;
temp_data = kcalloc(table_size, sizeof(*temp_data), GFP_KERNEL);
if (!temp_data)
@@ -501,7 +504,7 @@ static int max17042_init_model(struct max17042_chip *chip)
ret = max17042_model_data_compare(
chip,
chip->pdata->config_data->cell_char_tbl,
- (u16 *)temp_data,
+ temp_data,
table_size);
max10742_lock_model(chip);
@@ -514,7 +517,7 @@ static int max17042_verify_model_lock(struct max17042_chip *chip)
{
int i;
int table_size = ARRAY_SIZE(chip->pdata->config_data->cell_char_tbl);
- u32 *temp_data;
+ u16 *temp_data;
int ret = 0;
temp_data = kcalloc(table_size, sizeof(*temp_data), GFP_KERNEL);
diff --git a/drivers/power/reset/Kconfig b/drivers/power/reset/Kconfig
index 3bfac539334b..c74c3f67b8da 100644
--- a/drivers/power/reset/Kconfig
+++ b/drivers/power/reset/Kconfig
@@ -200,8 +200,8 @@ config REBOOT_MODE
config SYSCON_REBOOT_MODE
tristate "Generic SYSCON regmap reboot mode driver"
depends on OF
+ depends on MFD_SYSCON
select REBOOT_MODE
- select MFD_SYSCON
help
Say y here will enable reboot mode driver. This will
get reboot mode arguments and store it in SYSCON mapped
diff --git a/drivers/power/reset/hisi-reboot.c b/drivers/power/reset/hisi-reboot.c
index 9ab7f562a83b..f69387e12c1e 100644
--- a/drivers/power/reset/hisi-reboot.c
+++ b/drivers/power/reset/hisi-reboot.c
@@ -53,13 +53,16 @@ static int hisi_reboot_probe(struct platform_device *pdev)
if (of_property_read_u32(np, "reboot-offset", &reboot_offset) < 0) {
pr_err("failed to find reboot-offset property\n");
+ iounmap(base);
return -EINVAL;
}
err = register_restart_handler(&hisi_restart_nb);
- if (err)
+ if (err) {
dev_err(&pdev->dev, "cannot register restart handler (err=%d)\n",
err);
+ iounmap(base);
+ }
return err;
}
diff --git a/drivers/power/tps65217_charger.c b/drivers/power/tps65217_charger.c
index 73dfae41def8..4c56e54af6ac 100644
--- a/drivers/power/tps65217_charger.c
+++ b/drivers/power/tps65217_charger.c
@@ -206,6 +206,7 @@ static int tps65217_charger_probe(struct platform_device *pdev)
if (!charger)
return -ENOMEM;
+ platform_set_drvdata(pdev, charger);
charger->tps = tps;
charger->dev = &pdev->dev;
diff --git a/drivers/pwm/Kconfig b/drivers/pwm/Kconfig
index c182efc62c7b..80a566a00d04 100644
--- a/drivers/pwm/Kconfig
+++ b/drivers/pwm/Kconfig
@@ -74,6 +74,16 @@ config PWM_ATMEL_TCB
To compile this driver as a module, choose M here: the module
will be called pwm-atmel-tcb.
+config PWM_BCM_IPROC
+ tristate "iProc PWM support"
+ depends on ARCH_BCM_IPROC
+ help
+ Generic PWM framework driver for Broadcom iProc PWM block. This
+ block is used in Broadcom iProc SoC's.
+
+ To compile this driver as a module, choose M here: the module
+ will be called pwm-bcm-iproc.
+
config PWM_BCM_KONA
tristate "Kona PWM support"
depends on ARCH_BCM_MOBILE
@@ -137,6 +147,13 @@ config PWM_CRC
Generic PWM framework driver for Crystalcove (CRC) PMIC based PWM
control.
+config PWM_CROS_EC
+ tristate "ChromeOS EC PWM driver"
+ depends on MFD_CROS_EC
+ help
+ PWM driver for exposing a PWM attached to the ChromeOS Embedded
+ Controller.
+
config PWM_EP93XX
tristate "Cirrus Logic EP93xx PWM support"
depends on ARCH_EP93XX
@@ -305,7 +322,7 @@ config PWM_PXA
config PWM_RCAR
tristate "Renesas R-Car PWM support"
- depends on ARCH_RCAR_GEN1 || ARCH_RCAR_GEN2 || COMPILE_TEST
+ depends on ARCH_RENESAS || COMPILE_TEST
depends on HAS_IOMEM
help
This driver exposes the PWM Timer controller found in Renesas
@@ -362,6 +379,13 @@ config PWM_STI
To compile this driver as a module, choose M here: the module
will be called pwm-sti.
+config PWM_STMPE
+ bool "STMPE expander PWM export"
+ depends on MFD_STMPE
+ help
+ This enables support for the PWMs found in the STMPE I/O
+ expanders.
+
config PWM_SUN4I
tristate "Allwinner PWM support"
depends on ARCH_SUNXI || COMPILE_TEST
diff --git a/drivers/pwm/Makefile b/drivers/pwm/Makefile
index dd35bc121a18..feef1dd29f73 100644
--- a/drivers/pwm/Makefile
+++ b/drivers/pwm/Makefile
@@ -4,6 +4,7 @@ obj-$(CONFIG_PWM_AB8500) += pwm-ab8500.o
obj-$(CONFIG_PWM_ATMEL) += pwm-atmel.o
obj-$(CONFIG_PWM_ATMEL_HLCDC_PWM) += pwm-atmel-hlcdc.o
obj-$(CONFIG_PWM_ATMEL_TCB) += pwm-atmel-tcb.o
+obj-$(CONFIG_PWM_BCM_IPROC) += pwm-bcm-iproc.o
obj-$(CONFIG_PWM_BCM_KONA) += pwm-bcm-kona.o
obj-$(CONFIG_PWM_BCM2835) += pwm-bcm2835.o
obj-$(CONFIG_PWM_BERLIN) += pwm-berlin.o
@@ -11,6 +12,7 @@ obj-$(CONFIG_PWM_BFIN) += pwm-bfin.o
obj-$(CONFIG_PWM_BRCMSTB) += pwm-brcmstb.o
obj-$(CONFIG_PWM_CLPS711X) += pwm-clps711x.o
obj-$(CONFIG_PWM_CRC) += pwm-crc.o
+obj-$(CONFIG_PWM_CROS_EC) += pwm-cros-ec.o
obj-$(CONFIG_PWM_EP93XX) += pwm-ep93xx.o
obj-$(CONFIG_PWM_FSL_FTM) += pwm-fsl-ftm.o
obj-$(CONFIG_PWM_IMG) += pwm-img.o
@@ -34,6 +36,7 @@ obj-$(CONFIG_PWM_ROCKCHIP) += pwm-rockchip.o
obj-$(CONFIG_PWM_SAMSUNG) += pwm-samsung.o
obj-$(CONFIG_PWM_SPEAR) += pwm-spear.o
obj-$(CONFIG_PWM_STI) += pwm-sti.o
+obj-$(CONFIG_PWM_STMPE) += pwm-stmpe.o
obj-$(CONFIG_PWM_SUN4I) += pwm-sun4i.o
obj-$(CONFIG_PWM_TEGRA) += pwm-tegra.o
obj-$(CONFIG_PWM_TIECAP) += pwm-tiecap.o
diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c
index ed337a8c34ab..0dbd29e287db 100644
--- a/drivers/pwm/core.c
+++ b/drivers/pwm/core.c
@@ -526,6 +526,33 @@ int pwm_apply_state(struct pwm_device *pwm, struct pwm_state *state)
EXPORT_SYMBOL_GPL(pwm_apply_state);
/**
+ * pwm_capture() - capture and report a PWM signal
+ * @pwm: PWM device
+ * @result: structure to fill with capture result
+ * @timeout: time to wait, in milliseconds, before giving up on capture
+ *
+ * Returns: 0 on success or a negative error code on failure.
+ */
+int pwm_capture(struct pwm_device *pwm, struct pwm_capture *result,
+ unsigned long timeout)
+{
+ int err;
+
+ if (!pwm || !pwm->chip->ops)
+ return -EINVAL;
+
+ if (!pwm->chip->ops->capture)
+ return -ENOSYS;
+
+ mutex_lock(&pwm_lock);
+ err = pwm->chip->ops->capture(pwm->chip, pwm, result, timeout);
+ mutex_unlock(&pwm_lock);
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(pwm_capture);
+
+/**
* pwm_adjust_config() - adjust the current PWM config to the PWM arguments
* @pwm: PWM device
*
diff --git a/drivers/pwm/pwm-atmel.c b/drivers/pwm/pwm-atmel.c
index 0e4bd4e8e582..e6b8b1b7e6ba 100644
--- a/drivers/pwm/pwm-atmel.c
+++ b/drivers/pwm/pwm-atmel.c
@@ -64,7 +64,8 @@ struct atmel_pwm_chip {
void __iomem *base;
unsigned int updated_pwms;
- struct mutex isr_lock; /* ISR is cleared when read, ensure only one thread does that */
+ /* ISR is cleared when read, ensure only one thread does that */
+ struct mutex isr_lock;
void (*config)(struct pwm_chip *chip, struct pwm_device *pwm,
unsigned long dty, unsigned long prd);
@@ -271,6 +272,16 @@ static void atmel_pwm_disable(struct pwm_chip *chip, struct pwm_device *pwm)
mutex_unlock(&atmel_pwm->isr_lock);
atmel_pwm_writel(atmel_pwm, PWM_DIS, 1 << pwm->hwpwm);
+ /*
+ * Wait for the PWM channel disable operation to be effective before
+ * stopping the clock.
+ */
+ timeout = jiffies + 2 * HZ;
+
+ while ((atmel_pwm_readl(atmel_pwm, PWM_SR) & (1 << pwm->hwpwm)) &&
+ time_before(jiffies, timeout))
+ usleep_range(10, 100);
+
clk_disable(atmel_pwm->clk);
}
@@ -324,21 +335,14 @@ MODULE_DEVICE_TABLE(of, atmel_pwm_dt_ids);
static inline const struct atmel_pwm_data *
atmel_pwm_get_driver_data(struct platform_device *pdev)
{
- if (pdev->dev.of_node) {
- const struct of_device_id *match;
-
- match = of_match_device(atmel_pwm_dt_ids, &pdev->dev);
- if (!match)
- return NULL;
+ const struct platform_device_id *id;
- return match->data;
- } else {
- const struct platform_device_id *id;
+ if (pdev->dev.of_node)
+ return of_device_get_match_data(&pdev->dev);
- id = platform_get_device_id(pdev);
+ id = platform_get_device_id(pdev);
- return (struct atmel_pwm_data *)id->driver_data;
- }
+ return (struct atmel_pwm_data *)id->driver_data;
}
static int atmel_pwm_probe(struct platform_device *pdev)
diff --git a/drivers/pwm/pwm-bcm-iproc.c b/drivers/pwm/pwm-bcm-iproc.c
new file mode 100644
index 000000000000..d961a8207b1c
--- /dev/null
+++ b/drivers/pwm/pwm-bcm-iproc.c
@@ -0,0 +1,277 @@
+/*
+ * Copyright (C) 2016 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/math64.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/pwm.h>
+
+#define IPROC_PWM_CTRL_OFFSET 0x00
+#define IPROC_PWM_CTRL_TYPE_SHIFT(ch) (15 + (ch))
+#define IPROC_PWM_CTRL_POLARITY_SHIFT(ch) (8 + (ch))
+#define IPROC_PWM_CTRL_EN_SHIFT(ch) (ch)
+
+#define IPROC_PWM_PERIOD_OFFSET(ch) (0x04 + ((ch) << 3))
+#define IPROC_PWM_PERIOD_MIN 0x02
+#define IPROC_PWM_PERIOD_MAX 0xffff
+
+#define IPROC_PWM_DUTY_CYCLE_OFFSET(ch) (0x08 + ((ch) << 3))
+#define IPROC_PWM_DUTY_CYCLE_MIN 0x00
+#define IPROC_PWM_DUTY_CYCLE_MAX 0xffff
+
+#define IPROC_PWM_PRESCALE_OFFSET 0x24
+#define IPROC_PWM_PRESCALE_BITS 0x06
+#define IPROC_PWM_PRESCALE_SHIFT(ch) ((3 - (ch)) * \
+ IPROC_PWM_PRESCALE_BITS)
+#define IPROC_PWM_PRESCALE_MASK(ch) (IPROC_PWM_PRESCALE_MAX << \
+ IPROC_PWM_PRESCALE_SHIFT(ch))
+#define IPROC_PWM_PRESCALE_MIN 0x00
+#define IPROC_PWM_PRESCALE_MAX 0x3f
+
+struct iproc_pwmc {
+ struct pwm_chip chip;
+ void __iomem *base;
+ struct clk *clk;
+};
+
+static inline struct iproc_pwmc *to_iproc_pwmc(struct pwm_chip *chip)
+{
+ return container_of(chip, struct iproc_pwmc, chip);
+}
+
+static void iproc_pwmc_enable(struct iproc_pwmc *ip, unsigned int channel)
+{
+ u32 value;
+
+ value = readl(ip->base + IPROC_PWM_CTRL_OFFSET);
+ value |= 1 << IPROC_PWM_CTRL_EN_SHIFT(channel);
+ writel(value, ip->base + IPROC_PWM_CTRL_OFFSET);
+
+ /* must be a 400 ns delay between clearing and setting enable bit */
+ ndelay(400);
+}
+
+static void iproc_pwmc_disable(struct iproc_pwmc *ip, unsigned int channel)
+{
+ u32 value;
+
+ value = readl(ip->base + IPROC_PWM_CTRL_OFFSET);
+ value &= ~(1 << IPROC_PWM_CTRL_EN_SHIFT(channel));
+ writel(value, ip->base + IPROC_PWM_CTRL_OFFSET);
+
+ /* must be a 400 ns delay between clearing and setting enable bit */
+ ndelay(400);
+}
+
+static void iproc_pwmc_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
+ struct pwm_state *state)
+{
+ struct iproc_pwmc *ip = to_iproc_pwmc(chip);
+ u64 tmp, multi, rate;
+ u32 value, prescale;
+
+ rate = clk_get_rate(ip->clk);
+
+ value = readl(ip->base + IPROC_PWM_CTRL_OFFSET);
+
+ if (value & BIT(IPROC_PWM_CTRL_EN_SHIFT(pwm->hwpwm)))
+ state->enabled = true;
+ else
+ state->enabled = false;
+
+ if (value & BIT(IPROC_PWM_CTRL_POLARITY_SHIFT(pwm->hwpwm)))
+ state->polarity = PWM_POLARITY_NORMAL;
+ else
+ state->polarity = PWM_POLARITY_INVERSED;
+
+ value = readl(ip->base + IPROC_PWM_PRESCALE_OFFSET);
+ prescale = value >> IPROC_PWM_PRESCALE_SHIFT(pwm->hwpwm);
+ prescale &= IPROC_PWM_PRESCALE_MAX;
+
+ multi = NSEC_PER_SEC * (prescale + 1);
+
+ value = readl(ip->base + IPROC_PWM_PERIOD_OFFSET(pwm->hwpwm));
+ tmp = (value & IPROC_PWM_PERIOD_MAX) * multi;
+ state->period = div64_u64(tmp, rate);
+
+ value = readl(ip->base + IPROC_PWM_DUTY_CYCLE_OFFSET(pwm->hwpwm));
+ tmp = (value & IPROC_PWM_PERIOD_MAX) * multi;
+ state->duty_cycle = div64_u64(tmp, rate);
+}
+
+static int iproc_pwmc_apply(struct pwm_chip *chip, struct pwm_device *pwm,
+ struct pwm_state *state)
+{
+ unsigned long prescale = IPROC_PWM_PRESCALE_MIN;
+ struct iproc_pwmc *ip = to_iproc_pwmc(chip);
+ u32 value, period, duty;
+ u64 rate;
+
+ rate = clk_get_rate(ip->clk);
+
+ /*
+ * Find period count, duty count and prescale to suit duty_cycle and
+ * period. This is done according to formulas described below:
+ *
+ * period_ns = 10^9 * (PRESCALE + 1) * PC / PWM_CLK_RATE
+ * duty_ns = 10^9 * (PRESCALE + 1) * DC / PWM_CLK_RATE
+ *
+ * PC = (PWM_CLK_RATE * period_ns) / (10^9 * (PRESCALE + 1))
+ * DC = (PWM_CLK_RATE * duty_ns) / (10^9 * (PRESCALE + 1))
+ */
+ while (1) {
+ u64 value, div;
+
+ div = NSEC_PER_SEC * (prescale + 1);
+ value = rate * state->period;
+ period = div64_u64(value, div);
+ value = rate * state->duty_cycle;
+ duty = div64_u64(value, div);
+
+ if (period < IPROC_PWM_PERIOD_MIN ||
+ duty < IPROC_PWM_DUTY_CYCLE_MIN)
+ return -EINVAL;
+
+ if (period <= IPROC_PWM_PERIOD_MAX &&
+ duty <= IPROC_PWM_DUTY_CYCLE_MAX)
+ break;
+
+ /* Otherwise, increase prescale and recalculate counts */
+ if (++prescale > IPROC_PWM_PRESCALE_MAX)
+ return -EINVAL;
+ }
+
+ iproc_pwmc_disable(ip, pwm->hwpwm);
+
+ /* Set prescale */
+ value = readl(ip->base + IPROC_PWM_PRESCALE_OFFSET);
+ value &= ~IPROC_PWM_PRESCALE_MASK(pwm->hwpwm);
+ value |= prescale << IPROC_PWM_PRESCALE_SHIFT(pwm->hwpwm);
+ writel(value, ip->base + IPROC_PWM_PRESCALE_OFFSET);
+
+ /* set period and duty cycle */
+ writel(period, ip->base + IPROC_PWM_PERIOD_OFFSET(pwm->hwpwm));
+ writel(duty, ip->base + IPROC_PWM_DUTY_CYCLE_OFFSET(pwm->hwpwm));
+
+ /* set polarity */
+ value = readl(ip->base + IPROC_PWM_CTRL_OFFSET);
+
+ if (state->polarity == PWM_POLARITY_NORMAL)
+ value |= 1 << IPROC_PWM_CTRL_POLARITY_SHIFT(pwm->hwpwm);
+ else
+ value &= ~(1 << IPROC_PWM_CTRL_POLARITY_SHIFT(pwm->hwpwm));
+
+ writel(value, ip->base + IPROC_PWM_CTRL_OFFSET);
+
+ if (state->enabled)
+ iproc_pwmc_enable(ip, pwm->hwpwm);
+
+ return 0;
+}
+
+static const struct pwm_ops iproc_pwm_ops = {
+ .apply = iproc_pwmc_apply,
+ .get_state = iproc_pwmc_get_state,
+};
+
+static int iproc_pwmc_probe(struct platform_device *pdev)
+{
+ struct iproc_pwmc *ip;
+ struct resource *res;
+ unsigned int i;
+ u32 value;
+ int ret;
+
+ ip = devm_kzalloc(&pdev->dev, sizeof(*ip), GFP_KERNEL);
+ if (!ip)
+ return -ENOMEM;
+
+ platform_set_drvdata(pdev, ip);
+
+ ip->chip.dev = &pdev->dev;
+ ip->chip.ops = &iproc_pwm_ops;
+ ip->chip.base = -1;
+ ip->chip.npwm = 4;
+ ip->chip.of_xlate = of_pwm_xlate_with_flags;
+ ip->chip.of_pwm_n_cells = 3;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ ip->base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(ip->base))
+ return PTR_ERR(ip->base);
+
+ ip->clk = devm_clk_get(&pdev->dev, NULL);
+ if (IS_ERR(ip->clk)) {
+ dev_err(&pdev->dev, "failed to get clock: %ld\n",
+ PTR_ERR(ip->clk));
+ return PTR_ERR(ip->clk);
+ }
+
+ ret = clk_prepare_enable(ip->clk);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "failed to enable clock: %d\n", ret);
+ return ret;
+ }
+
+ /* Set full drive and normal polarity for all channels */
+ value = readl(ip->base + IPROC_PWM_CTRL_OFFSET);
+
+ for (i = 0; i < ip->chip.npwm; i++) {
+ value &= ~(1 << IPROC_PWM_CTRL_TYPE_SHIFT(i));
+ value |= 1 << IPROC_PWM_CTRL_POLARITY_SHIFT(i);
+ }
+
+ writel(value, ip->base + IPROC_PWM_CTRL_OFFSET);
+
+ ret = pwmchip_add(&ip->chip);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "failed to add PWM chip: %d\n", ret);
+ clk_disable_unprepare(ip->clk);
+ }
+
+ return ret;
+}
+
+static int iproc_pwmc_remove(struct platform_device *pdev)
+{
+ struct iproc_pwmc *ip = platform_get_drvdata(pdev);
+
+ clk_disable_unprepare(ip->clk);
+
+ return pwmchip_remove(&ip->chip);
+}
+
+static const struct of_device_id bcm_iproc_pwmc_dt[] = {
+ { .compatible = "brcm,iproc-pwm" },
+ { },
+};
+MODULE_DEVICE_TABLE(of, bcm_iproc_pwmc_dt);
+
+static struct platform_driver iproc_pwmc_driver = {
+ .driver = {
+ .name = "bcm-iproc-pwm",
+ .of_match_table = bcm_iproc_pwmc_dt,
+ },
+ .probe = iproc_pwmc_probe,
+ .remove = iproc_pwmc_remove,
+};
+module_platform_driver(iproc_pwmc_driver);
+
+MODULE_AUTHOR("Yendapally Reddy Dhananjaya Reddy <yendapally.reddy@broadcom.com>");
+MODULE_DESCRIPTION("Broadcom iProc PWM driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/pwm/pwm-cros-ec.c b/drivers/pwm/pwm-cros-ec.c
new file mode 100644
index 000000000000..99b9acc1a420
--- /dev/null
+++ b/drivers/pwm/pwm-cros-ec.c
@@ -0,0 +1,260 @@
+/*
+ * Copyright (C) 2016 Google, Inc
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2, as published by
+ * the Free Software Foundation.
+ *
+ * Expose a PWM controlled by the ChromeOS EC to the host processor.
+ */
+
+#include <linux/module.h>
+#include <linux/mfd/cros_ec.h>
+#include <linux/mfd/cros_ec_commands.h>
+#include <linux/platform_device.h>
+#include <linux/pwm.h>
+#include <linux/slab.h>
+
+/**
+ * struct cros_ec_pwm_device - Driver data for EC PWM
+ *
+ * @dev: Device node
+ * @ec: Pointer to EC device
+ * @chip: PWM controller chip
+ */
+struct cros_ec_pwm_device {
+ struct device *dev;
+ struct cros_ec_device *ec;
+ struct pwm_chip chip;
+};
+
+static inline struct cros_ec_pwm_device *pwm_to_cros_ec_pwm(struct pwm_chip *c)
+{
+ return container_of(c, struct cros_ec_pwm_device, chip);
+}
+
+static int cros_ec_pwm_set_duty(struct cros_ec_device *ec, u8 index, u16 duty)
+{
+ struct {
+ struct cros_ec_command msg;
+ struct ec_params_pwm_set_duty params;
+ } buf;
+ struct ec_params_pwm_set_duty *params = &buf.params;
+ struct cros_ec_command *msg = &buf.msg;
+
+ memset(&buf, 0, sizeof(buf));
+
+ msg->version = 0;
+ msg->command = EC_CMD_PWM_SET_DUTY;
+ msg->insize = 0;
+ msg->outsize = sizeof(*params);
+
+ params->duty = duty;
+ params->pwm_type = EC_PWM_TYPE_GENERIC;
+ params->index = index;
+
+ return cros_ec_cmd_xfer_status(ec, msg);
+}
+
+static int __cros_ec_pwm_get_duty(struct cros_ec_device *ec, u8 index,
+ u32 *result)
+{
+ struct {
+ struct cros_ec_command msg;
+ union {
+ struct ec_params_pwm_get_duty params;
+ struct ec_response_pwm_get_duty resp;
+ };
+ } buf;
+ struct ec_params_pwm_get_duty *params = &buf.params;
+ struct ec_response_pwm_get_duty *resp = &buf.resp;
+ struct cros_ec_command *msg = &buf.msg;
+ int ret;
+
+ memset(&buf, 0, sizeof(buf));
+
+ msg->version = 0;
+ msg->command = EC_CMD_PWM_GET_DUTY;
+ msg->insize = sizeof(*params);
+ msg->outsize = sizeof(*resp);
+
+ params->pwm_type = EC_PWM_TYPE_GENERIC;
+ params->index = index;
+
+ ret = cros_ec_cmd_xfer_status(ec, msg);
+ if (result)
+ *result = msg->result;
+ if (ret < 0)
+ return ret;
+
+ return resp->duty;
+}
+
+static int cros_ec_pwm_get_duty(struct cros_ec_device *ec, u8 index)
+{
+ return __cros_ec_pwm_get_duty(ec, index, NULL);
+}
+
+static int cros_ec_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
+ struct pwm_state *state)
+{
+ struct cros_ec_pwm_device *ec_pwm = pwm_to_cros_ec_pwm(chip);
+ int duty_cycle;
+
+ /* The EC won't let us change the period */
+ if (state->period != EC_PWM_MAX_DUTY)
+ return -EINVAL;
+
+ /*
+ * EC doesn't separate the concept of duty cycle and enabled, but
+ * kernel does. Translate.
+ */
+ duty_cycle = state->enabled ? state->duty_cycle : 0;
+
+ return cros_ec_pwm_set_duty(ec_pwm->ec, pwm->hwpwm, duty_cycle);
+}
+
+static void cros_ec_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
+ struct pwm_state *state)
+{
+ struct cros_ec_pwm_device *ec_pwm = pwm_to_cros_ec_pwm(chip);
+ int ret;
+
+ ret = cros_ec_pwm_get_duty(ec_pwm->ec, pwm->hwpwm);
+ if (ret < 0) {
+ dev_err(chip->dev, "error getting initial duty: %d\n", ret);
+ return;
+ }
+
+ state->enabled = (ret > 0);
+ state->period = EC_PWM_MAX_DUTY;
+
+ /* Note that "disabled" and "duty cycle == 0" are treated the same */
+ state->duty_cycle = ret;
+}
+
+static struct pwm_device *
+cros_ec_pwm_xlate(struct pwm_chip *pc, const struct of_phandle_args *args)
+{
+ struct pwm_device *pwm;
+
+ if (args->args[0] >= pc->npwm)
+ return ERR_PTR(-EINVAL);
+
+ pwm = pwm_request_from_chip(pc, args->args[0], NULL);
+ if (IS_ERR(pwm))
+ return pwm;
+
+ /* The EC won't let us change the period */
+ pwm->args.period = EC_PWM_MAX_DUTY;
+
+ return pwm;
+}
+
+static const struct pwm_ops cros_ec_pwm_ops = {
+ .get_state = cros_ec_pwm_get_state,
+ .apply = cros_ec_pwm_apply,
+ .owner = THIS_MODULE,
+};
+
+static int cros_ec_num_pwms(struct cros_ec_device *ec)
+{
+ int i, ret;
+
+ /* The index field is only 8 bits */
+ for (i = 0; i <= U8_MAX; i++) {
+ u32 result = 0;
+
+ ret = __cros_ec_pwm_get_duty(ec, i, &result);
+ /* We want to parse EC protocol errors */
+ if (ret < 0 && !(ret == -EPROTO && result))
+ return ret;
+
+ /*
+ * We look for SUCCESS, INVALID_COMMAND, or INVALID_PARAM
+ * responses; everything else is treated as an error.
+ */
+ if (result == EC_RES_INVALID_COMMAND)
+ return -ENODEV;
+ else if (result == EC_RES_INVALID_PARAM)
+ return i;
+ else if (result)
+ return -EPROTO;
+ }
+
+ return U8_MAX;
+}
+
+static int cros_ec_pwm_probe(struct platform_device *pdev)
+{
+ struct cros_ec_device *ec = dev_get_drvdata(pdev->dev.parent);
+ struct device *dev = &pdev->dev;
+ struct cros_ec_pwm_device *ec_pwm;
+ struct pwm_chip *chip;
+ int ret;
+
+ if (!ec) {
+ dev_err(dev, "no parent EC device\n");
+ return -EINVAL;
+ }
+
+ ec_pwm = devm_kzalloc(dev, sizeof(*ec_pwm), GFP_KERNEL);
+ if (!ec_pwm)
+ return -ENOMEM;
+ chip = &ec_pwm->chip;
+ ec_pwm->ec = ec;
+
+ /* PWM chip */
+ chip->dev = dev;
+ chip->ops = &cros_ec_pwm_ops;
+ chip->of_xlate = cros_ec_pwm_xlate;
+ chip->of_pwm_n_cells = 1;
+ chip->base = -1;
+ ret = cros_ec_num_pwms(ec);
+ if (ret < 0) {
+ dev_err(dev, "Couldn't find PWMs: %d\n", ret);
+ return ret;
+ }
+ chip->npwm = ret;
+ dev_dbg(dev, "Probed %u PWMs\n", chip->npwm);
+
+ ret = pwmchip_add(chip);
+ if (ret < 0) {
+ dev_err(dev, "cannot register PWM: %d\n", ret);
+ return ret;
+ }
+
+ platform_set_drvdata(pdev, ec_pwm);
+
+ return ret;
+}
+
+static int cros_ec_pwm_remove(struct platform_device *dev)
+{
+ struct cros_ec_pwm_device *ec_pwm = platform_get_drvdata(dev);
+ struct pwm_chip *chip = &ec_pwm->chip;
+
+ return pwmchip_remove(chip);
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id cros_ec_pwm_of_match[] = {
+ { .compatible = "google,cros-ec-pwm" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, cros_ec_pwm_of_match);
+#endif
+
+static struct platform_driver cros_ec_pwm_driver = {
+ .probe = cros_ec_pwm_probe,
+ .remove = cros_ec_pwm_remove,
+ .driver = {
+ .name = "cros-ec-pwm",
+ .of_match_table = of_match_ptr(cros_ec_pwm_of_match),
+ },
+};
+module_platform_driver(cros_ec_pwm_driver);
+
+MODULE_ALIAS("platform:cros-ec-pwm");
+MODULE_DESCRIPTION("ChromeOS EC PWM driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/pwm/pwm-lpc32xx.c b/drivers/pwm/pwm-lpc32xx.c
index 4d470c1a406a..a9b3cff96aac 100644
--- a/drivers/pwm/pwm-lpc32xx.c
+++ b/drivers/pwm/pwm-lpc32xx.c
@@ -25,6 +25,7 @@ struct lpc32xx_pwm_chip {
};
#define PWM_ENABLE BIT(31)
+#define PWM_PIN_LEVEL BIT(30)
#define to_lpc32xx_pwm_chip(_chip) \
container_of(_chip, struct lpc32xx_pwm_chip, chip)
@@ -103,6 +104,7 @@ static int lpc32xx_pwm_probe(struct platform_device *pdev)
struct lpc32xx_pwm_chip *lpc32xx;
struct resource *res;
int ret;
+ u32 val;
lpc32xx = devm_kzalloc(&pdev->dev, sizeof(*lpc32xx), GFP_KERNEL);
if (!lpc32xx)
@@ -128,6 +130,11 @@ static int lpc32xx_pwm_probe(struct platform_device *pdev)
return ret;
}
+ /* When PWM is disable, configure the output to the default value */
+ val = readl(lpc32xx->base + (lpc32xx->chip.pwms[0].hwpwm << 2));
+ val &= ~PWM_PIN_LEVEL;
+ writel(val, lpc32xx->base + (lpc32xx->chip.pwms[0].hwpwm << 2));
+
platform_set_drvdata(pdev, lpc32xx);
return 0;
diff --git a/drivers/pwm/pwm-lpss-pci.c b/drivers/pwm/pwm-lpss-pci.c
index 7160e8ab38a4..3622f093490e 100644
--- a/drivers/pwm/pwm-lpss-pci.c
+++ b/drivers/pwm/pwm-lpss-pci.c
@@ -76,6 +76,7 @@ static const struct pci_device_id pwm_lpss_pci_ids[] = {
{ PCI_VDEVICE(INTEL, 0x0ac8), (unsigned long)&pwm_lpss_bxt_info},
{ PCI_VDEVICE(INTEL, 0x0f08), (unsigned long)&pwm_lpss_byt_info},
{ PCI_VDEVICE(INTEL, 0x0f09), (unsigned long)&pwm_lpss_byt_info},
+ { PCI_VDEVICE(INTEL, 0x11a5), (unsigned long)&pwm_lpss_bxt_info},
{ PCI_VDEVICE(INTEL, 0x1ac8), (unsigned long)&pwm_lpss_bxt_info},
{ PCI_VDEVICE(INTEL, 0x2288), (unsigned long)&pwm_lpss_bsw_info},
{ PCI_VDEVICE(INTEL, 0x2289), (unsigned long)&pwm_lpss_bsw_info},
diff --git a/drivers/pwm/pwm-lpss.c b/drivers/pwm/pwm-lpss.c
index 295b963dbddb..72c0bce5a75c 100644
--- a/drivers/pwm/pwm-lpss.c
+++ b/drivers/pwm/pwm-lpss.c
@@ -27,7 +27,6 @@
#define PWM_SW_UPDATE BIT(30)
#define PWM_BASE_UNIT_SHIFT 8
#define PWM_ON_TIME_DIV_MASK 0x000000ff
-#define PWM_DIVISION_CORRECTION 0x2
/* Size of each PWM register space if multiple */
#define PWM_SIZE 0x400
@@ -92,8 +91,8 @@ static int pwm_lpss_config(struct pwm_chip *chip, struct pwm_device *pwm,
int duty_ns, int period_ns)
{
struct pwm_lpss_chip *lpwm = to_lpwm(chip);
- u8 on_time_div;
- unsigned long c, base_unit_range;
+ unsigned long long on_time_div;
+ unsigned long c = lpwm->info->clk_rate, base_unit_range;
unsigned long long base_unit, freq = NSEC_PER_SEC;
u32 ctrl;
@@ -101,21 +100,18 @@ static int pwm_lpss_config(struct pwm_chip *chip, struct pwm_device *pwm,
/*
* The equation is:
- * base_unit = ((freq / c) * base_unit_range) + correction
+ * base_unit = round(base_unit_range * freq / c)
*/
base_unit_range = BIT(lpwm->info->base_unit_bits);
- base_unit = freq * base_unit_range;
+ freq *= base_unit_range;
- c = lpwm->info->clk_rate;
- if (!c)
- return -EINVAL;
-
- do_div(base_unit, c);
- base_unit += PWM_DIVISION_CORRECTION;
+ base_unit = DIV_ROUND_CLOSEST_ULL(freq, c);
if (duty_ns <= 0)
duty_ns = 1;
- on_time_div = 255 - (255 * duty_ns / period_ns);
+ on_time_div = 255ULL * duty_ns;
+ do_div(on_time_div, period_ns);
+ on_time_div = 255ULL - on_time_div;
pm_runtime_get_sync(chip->dev);
@@ -169,6 +165,7 @@ struct pwm_lpss_chip *pwm_lpss_probe(struct device *dev, struct resource *r,
const struct pwm_lpss_boardinfo *info)
{
struct pwm_lpss_chip *lpwm;
+ unsigned long c;
int ret;
lpwm = devm_kzalloc(dev, sizeof(*lpwm), GFP_KERNEL);
@@ -180,6 +177,11 @@ struct pwm_lpss_chip *pwm_lpss_probe(struct device *dev, struct resource *r,
return ERR_CAST(lpwm->regs);
lpwm->info = info;
+
+ c = lpwm->info->clk_rate;
+ if (!c)
+ return ERR_PTR(-EINVAL);
+
lpwm->chip.dev = dev;
lpwm->chip.ops = &pwm_lpss_ops;
lpwm->chip.base = -1;
diff --git a/drivers/pwm/pwm-rockchip.c b/drivers/pwm/pwm-rockchip.c
index 7d9cc9049522..ef89df1f7336 100644
--- a/drivers/pwm/pwm-rockchip.c
+++ b/drivers/pwm/pwm-rockchip.c
@@ -47,10 +47,14 @@ struct rockchip_pwm_regs {
struct rockchip_pwm_data {
struct rockchip_pwm_regs regs;
unsigned int prescaler;
+ bool supports_polarity;
const struct pwm_ops *ops;
void (*set_enable)(struct pwm_chip *chip,
- struct pwm_device *pwm, bool enable);
+ struct pwm_device *pwm, bool enable,
+ enum pwm_polarity polarity);
+ void (*get_state)(struct pwm_chip *chip, struct pwm_device *pwm,
+ struct pwm_state *state);
};
static inline struct rockchip_pwm_chip *to_rockchip_pwm_chip(struct pwm_chip *c)
@@ -59,7 +63,8 @@ static inline struct rockchip_pwm_chip *to_rockchip_pwm_chip(struct pwm_chip *c)
}
static void rockchip_pwm_set_enable_v1(struct pwm_chip *chip,
- struct pwm_device *pwm, bool enable)
+ struct pwm_device *pwm, bool enable,
+ enum pwm_polarity polarity)
{
struct rockchip_pwm_chip *pc = to_rockchip_pwm_chip(chip);
u32 enable_conf = PWM_CTRL_OUTPUT_EN | PWM_CTRL_TIMER_EN;
@@ -75,15 +80,29 @@ static void rockchip_pwm_set_enable_v1(struct pwm_chip *chip,
writel_relaxed(val, pc->base + pc->data->regs.ctrl);
}
+static void rockchip_pwm_get_state_v1(struct pwm_chip *chip,
+ struct pwm_device *pwm,
+ struct pwm_state *state)
+{
+ struct rockchip_pwm_chip *pc = to_rockchip_pwm_chip(chip);
+ u32 enable_conf = PWM_CTRL_OUTPUT_EN | PWM_CTRL_TIMER_EN;
+ u32 val;
+
+ val = readl_relaxed(pc->base + pc->data->regs.ctrl);
+ if ((val & enable_conf) == enable_conf)
+ state->enabled = true;
+}
+
static void rockchip_pwm_set_enable_v2(struct pwm_chip *chip,
- struct pwm_device *pwm, bool enable)
+ struct pwm_device *pwm, bool enable,
+ enum pwm_polarity polarity)
{
struct rockchip_pwm_chip *pc = to_rockchip_pwm_chip(chip);
u32 enable_conf = PWM_OUTPUT_LEFT | PWM_LP_DISABLE | PWM_ENABLE |
PWM_CONTINUOUS;
u32 val;
- if (pwm_get_polarity(pwm) == PWM_POLARITY_INVERSED)
+ if (polarity == PWM_POLARITY_INVERSED)
enable_conf |= PWM_DUTY_NEGATIVE | PWM_INACTIVE_POSITIVE;
else
enable_conf |= PWM_DUTY_POSITIVE | PWM_INACTIVE_NEGATIVE;
@@ -98,13 +117,59 @@ static void rockchip_pwm_set_enable_v2(struct pwm_chip *chip,
writel_relaxed(val, pc->base + pc->data->regs.ctrl);
}
+static void rockchip_pwm_get_state_v2(struct pwm_chip *chip,
+ struct pwm_device *pwm,
+ struct pwm_state *state)
+{
+ struct rockchip_pwm_chip *pc = to_rockchip_pwm_chip(chip);
+ u32 enable_conf = PWM_OUTPUT_LEFT | PWM_LP_DISABLE | PWM_ENABLE |
+ PWM_CONTINUOUS;
+ u32 val;
+
+ val = readl_relaxed(pc->base + pc->data->regs.ctrl);
+ if ((val & enable_conf) != enable_conf)
+ return;
+
+ state->enabled = true;
+
+ if (!(val & PWM_DUTY_POSITIVE))
+ state->polarity = PWM_POLARITY_INVERSED;
+}
+
+static void rockchip_pwm_get_state(struct pwm_chip *chip,
+ struct pwm_device *pwm,
+ struct pwm_state *state)
+{
+ struct rockchip_pwm_chip *pc = to_rockchip_pwm_chip(chip);
+ unsigned long clk_rate;
+ u64 tmp;
+ int ret;
+
+ ret = clk_enable(pc->clk);
+ if (ret)
+ return;
+
+ clk_rate = clk_get_rate(pc->clk);
+
+ tmp = readl_relaxed(pc->base + pc->data->regs.period);
+ tmp *= pc->data->prescaler * NSEC_PER_SEC;
+ state->period = DIV_ROUND_CLOSEST_ULL(tmp, clk_rate);
+
+ tmp = readl_relaxed(pc->base + pc->data->regs.duty);
+ tmp *= pc->data->prescaler * NSEC_PER_SEC;
+ state->duty_cycle = DIV_ROUND_CLOSEST_ULL(tmp, clk_rate);
+
+ pc->data->get_state(chip, pwm, state);
+
+ clk_disable(pc->clk);
+}
+
static int rockchip_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
int duty_ns, int period_ns)
{
struct rockchip_pwm_chip *pc = to_rockchip_pwm_chip(chip);
unsigned long period, duty;
u64 clk_rate, div;
- int ret;
clk_rate = clk_get_rate(pc->clk);
@@ -114,74 +179,72 @@ static int rockchip_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
* default prescaler value for all practical clock rate values.
*/
div = clk_rate * period_ns;
- do_div(div, pc->data->prescaler * NSEC_PER_SEC);
- period = div;
+ period = DIV_ROUND_CLOSEST_ULL(div,
+ pc->data->prescaler * NSEC_PER_SEC);
div = clk_rate * duty_ns;
- do_div(div, pc->data->prescaler * NSEC_PER_SEC);
- duty = div;
-
- ret = clk_enable(pc->clk);
- if (ret)
- return ret;
+ duty = DIV_ROUND_CLOSEST_ULL(div, pc->data->prescaler * NSEC_PER_SEC);
writel(period, pc->base + pc->data->regs.period);
writel(duty, pc->base + pc->data->regs.duty);
- writel(0, pc->base + pc->data->regs.cntr);
-
- clk_disable(pc->clk);
-
- return 0;
-}
-
-static int rockchip_pwm_set_polarity(struct pwm_chip *chip,
- struct pwm_device *pwm,
- enum pwm_polarity polarity)
-{
- /*
- * No action needed here because pwm->polarity will be set by the core
- * and the core will only change polarity when the PWM is not enabled.
- * We'll handle things in set_enable().
- */
return 0;
}
-static int rockchip_pwm_enable(struct pwm_chip *chip, struct pwm_device *pwm)
+static int rockchip_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
+ struct pwm_state *state)
{
struct rockchip_pwm_chip *pc = to_rockchip_pwm_chip(chip);
+ struct pwm_state curstate;
+ bool enabled;
int ret;
+ pwm_get_state(pwm, &curstate);
+ enabled = curstate.enabled;
+
ret = clk_enable(pc->clk);
if (ret)
return ret;
- pc->data->set_enable(chip, pwm, true);
+ if (state->polarity != curstate.polarity && enabled) {
+ pc->data->set_enable(chip, pwm, false, state->polarity);
+ enabled = false;
+ }
- return 0;
-}
+ ret = rockchip_pwm_config(chip, pwm, state->duty_cycle, state->period);
+ if (ret) {
+ if (enabled != curstate.enabled)
+ pc->data->set_enable(chip, pwm, !enabled,
+ state->polarity);
-static void rockchip_pwm_disable(struct pwm_chip *chip, struct pwm_device *pwm)
-{
- struct rockchip_pwm_chip *pc = to_rockchip_pwm_chip(chip);
+ goto out;
+ }
+
+ if (state->enabled != enabled)
+ pc->data->set_enable(chip, pwm, state->enabled,
+ state->polarity);
- pc->data->set_enable(chip, pwm, false);
+ /*
+ * Update the state with the real hardware, which can differ a bit
+ * because of period/duty_cycle approximation.
+ */
+ rockchip_pwm_get_state(chip, pwm, state);
+out:
clk_disable(pc->clk);
+
+ return ret;
}
static const struct pwm_ops rockchip_pwm_ops_v1 = {
- .config = rockchip_pwm_config,
- .enable = rockchip_pwm_enable,
- .disable = rockchip_pwm_disable,
+ .get_state = rockchip_pwm_get_state,
+ .apply = rockchip_pwm_apply,
.owner = THIS_MODULE,
};
static const struct pwm_ops rockchip_pwm_ops_v2 = {
- .config = rockchip_pwm_config,
- .set_polarity = rockchip_pwm_set_polarity,
- .enable = rockchip_pwm_enable,
- .disable = rockchip_pwm_disable,
+ .get_state = rockchip_pwm_get_state,
+ .apply = rockchip_pwm_apply,
.owner = THIS_MODULE,
};
@@ -195,6 +258,7 @@ static const struct rockchip_pwm_data pwm_data_v1 = {
.prescaler = 2,
.ops = &rockchip_pwm_ops_v1,
.set_enable = rockchip_pwm_set_enable_v1,
+ .get_state = rockchip_pwm_get_state_v1,
};
static const struct rockchip_pwm_data pwm_data_v2 = {
@@ -205,8 +269,10 @@ static const struct rockchip_pwm_data pwm_data_v2 = {
.ctrl = 0x0c,
},
.prescaler = 1,
+ .supports_polarity = true,
.ops = &rockchip_pwm_ops_v2,
.set_enable = rockchip_pwm_set_enable_v2,
+ .get_state = rockchip_pwm_get_state_v2,
};
static const struct rockchip_pwm_data pwm_data_vop = {
@@ -217,8 +283,10 @@ static const struct rockchip_pwm_data pwm_data_vop = {
.ctrl = 0x00,
},
.prescaler = 1,
+ .supports_polarity = true,
.ops = &rockchip_pwm_ops_v2,
.set_enable = rockchip_pwm_set_enable_v2,
+ .get_state = rockchip_pwm_get_state_v2,
};
static const struct of_device_id rockchip_pwm_dt_ids[] = {
@@ -253,7 +321,7 @@ static int rockchip_pwm_probe(struct platform_device *pdev)
if (IS_ERR(pc->clk))
return PTR_ERR(pc->clk);
- ret = clk_prepare(pc->clk);
+ ret = clk_prepare_enable(pc->clk);
if (ret)
return ret;
@@ -265,7 +333,7 @@ static int rockchip_pwm_probe(struct platform_device *pdev)
pc->chip.base = -1;
pc->chip.npwm = 1;
- if (pc->data->ops->set_polarity) {
+ if (pc->data->supports_polarity) {
pc->chip.of_xlate = of_pwm_xlate_with_flags;
pc->chip.of_pwm_n_cells = 3;
}
@@ -276,6 +344,10 @@ static int rockchip_pwm_probe(struct platform_device *pdev)
dev_err(&pdev->dev, "pwmchip_add() failed: %d\n", ret);
}
+ /* Keep the PWM clk enabled if the PWM appears to be up and running. */
+ if (!pwm_is_enabled(pc->chip.pwms))
+ clk_disable(pc->clk);
+
return ret;
}
@@ -283,6 +355,20 @@ static int rockchip_pwm_remove(struct platform_device *pdev)
{
struct rockchip_pwm_chip *pc = platform_get_drvdata(pdev);
+ /*
+ * Disable the PWM clk before unpreparing it if the PWM device is still
+ * running. This should only happen when the last PWM user left it
+ * enabled, or when nobody requested a PWM that was previously enabled
+ * by the bootloader.
+ *
+ * FIXME: Maybe the core should disable all PWM devices in
+ * pwmchip_remove(). In this case we'd only have to call
+ * clk_unprepare() after pwmchip_remove().
+ *
+ */
+ if (pwm_is_enabled(pc->chip.pwms))
+ clk_disable(pc->clk);
+
clk_unprepare(pc->clk);
return pwmchip_remove(&pc->chip);
diff --git a/drivers/pwm/pwm-stmpe.c b/drivers/pwm/pwm-stmpe.c
new file mode 100644
index 000000000000..e464582a390a
--- /dev/null
+++ b/drivers/pwm/pwm-stmpe.c
@@ -0,0 +1,319 @@
+/*
+ * Copyright (C) 2016 Linaro Ltd.
+ *
+ * Author: Linus Walleij <linus.walleij@linaro.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2, as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/bitops.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/mfd/stmpe.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/pwm.h>
+#include <linux/slab.h>
+
+#define STMPE24XX_PWMCS 0x30
+#define PWMCS_EN_PWM0 BIT(0)
+#define PWMCS_EN_PWM1 BIT(1)
+#define PWMCS_EN_PWM2 BIT(2)
+#define STMPE24XX_PWMIC0 0x38
+#define STMPE24XX_PWMIC1 0x39
+#define STMPE24XX_PWMIC2 0x3a
+
+#define STMPE_PWM_24XX_PINBASE 21
+
+struct stmpe_pwm {
+ struct stmpe *stmpe;
+ struct pwm_chip chip;
+ u8 last_duty;
+};
+
+static inline struct stmpe_pwm *to_stmpe_pwm(struct pwm_chip *chip)
+{
+ return container_of(chip, struct stmpe_pwm, chip);
+}
+
+static int stmpe_24xx_pwm_enable(struct pwm_chip *chip, struct pwm_device *pwm)
+{
+ struct stmpe_pwm *stmpe_pwm = to_stmpe_pwm(chip);
+ u8 value;
+ int ret;
+
+ ret = stmpe_reg_read(stmpe_pwm->stmpe, STMPE24XX_PWMCS);
+ if (ret < 0) {
+ dev_err(chip->dev, "error reading PWM#%u control\n",
+ pwm->hwpwm);
+ return ret;
+ }
+
+ value = ret | BIT(pwm->hwpwm);
+
+ ret = stmpe_reg_write(stmpe_pwm->stmpe, STMPE24XX_PWMCS, value);
+ if (ret) {
+ dev_err(chip->dev, "error writing PWM#%u control\n",
+ pwm->hwpwm);
+ return ret;
+ }
+
+ return 0;
+}
+
+static void stmpe_24xx_pwm_disable(struct pwm_chip *chip,
+ struct pwm_device *pwm)
+{
+ struct stmpe_pwm *stmpe_pwm = to_stmpe_pwm(chip);
+ u8 value;
+ int ret;
+
+ ret = stmpe_reg_read(stmpe_pwm->stmpe, STMPE24XX_PWMCS);
+ if (ret < 0) {
+ dev_err(chip->dev, "error reading PWM#%u control\n",
+ pwm->hwpwm);
+ return;
+ }
+
+ value = ret & ~BIT(pwm->hwpwm);
+
+ ret = stmpe_reg_write(stmpe_pwm->stmpe, STMPE24XX_PWMCS, value);
+ if (ret) {
+ dev_err(chip->dev, "error writing PWM#%u control\n",
+ pwm->hwpwm);
+ return;
+ }
+}
+
+/* STMPE 24xx PWM instructions */
+#define SMAX 0x007f
+#define SMIN 0x00ff
+#define GTS 0x0000
+#define LOAD BIT(14) /* Only available on 2403 */
+#define RAMPUP 0x0000
+#define RAMPDOWN BIT(7)
+#define PRESCALE_512 BIT(14)
+#define STEPTIME_1 BIT(8)
+#define BRANCH (BIT(15) | BIT(13))
+
+static int stmpe_24xx_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
+ int duty_ns, int period_ns)
+{
+ struct stmpe_pwm *stmpe_pwm = to_stmpe_pwm(chip);
+ unsigned int i, pin;
+ u16 program[3] = {
+ SMAX,
+ GTS,
+ GTS,
+ };
+ u8 offset;
+ int ret;
+
+ /* Make sure we are disabled */
+ if (pwm_is_enabled(pwm)) {
+ stmpe_24xx_pwm_disable(chip, pwm);
+ } else {
+ /* Connect the PWM to the pin */
+ pin = pwm->hwpwm;
+
+ /* On STMPE2401 and 2403 pins 21,22,23 are used */
+ if (stmpe_pwm->stmpe->partnum == STMPE2401 ||
+ stmpe_pwm->stmpe->partnum == STMPE2403)
+ pin += STMPE_PWM_24XX_PINBASE;
+
+ ret = stmpe_set_altfunc(stmpe_pwm->stmpe, BIT(pin),
+ STMPE_BLOCK_PWM);
+ if (ret) {
+ dev_err(chip->dev, "unable to connect PWM#%u to pin\n",
+ pwm->hwpwm);
+ return ret;
+ }
+ }
+
+ /* STMPE24XX */
+ switch (pwm->hwpwm) {
+ case 0:
+ offset = STMPE24XX_PWMIC0;
+ break;
+
+ case 1:
+ offset = STMPE24XX_PWMIC1;
+ break;
+
+ case 2:
+ offset = STMPE24XX_PWMIC1;
+ break;
+
+ default:
+ /* Should not happen as npwm is 3 */
+ return -ENODEV;
+ }
+
+ dev_dbg(chip->dev, "PWM#%u: config duty %d ns, period %d ns\n",
+ pwm->hwpwm, duty_ns, period_ns);
+
+ if (duty_ns == 0) {
+ if (stmpe_pwm->stmpe->partnum == STMPE2401)
+ program[0] = SMAX; /* off all the time */
+
+ if (stmpe_pwm->stmpe->partnum == STMPE2403)
+ program[0] = LOAD | 0xff; /* LOAD 0xff */
+
+ stmpe_pwm->last_duty = 0x00;
+ } else if (duty_ns == period_ns) {
+ if (stmpe_pwm->stmpe->partnum == STMPE2401)
+ program[0] = SMIN; /* on all the time */
+
+ if (stmpe_pwm->stmpe->partnum == STMPE2403)
+ program[0] = LOAD | 0x00; /* LOAD 0x00 */
+
+ stmpe_pwm->last_duty = 0xff;
+ } else {
+ u8 value, last = stmpe_pwm->last_duty;
+ unsigned long duty;
+
+ /*
+ * Counter goes from 0x00 to 0xff repeatedly at 32768 Hz,
+ * (means a period of 30517 ns) then this is compared to the
+ * counter from the ramp, if this is >= PWM counter the output
+ * is high. With LOAD we can define how much of the cycle it
+ * is on.
+ *
+ * Prescale = 0 -> 2 kHz -> T = 1/f = 488281.25 ns
+ */
+
+ /* Scale to 0..0xff */
+ duty = duty_ns * 256;
+ duty = DIV_ROUND_CLOSEST(duty, period_ns);
+ value = duty;
+
+ if (value == last) {
+ /* Run the old program */
+ if (pwm_is_enabled(pwm))
+ stmpe_24xx_pwm_enable(chip, pwm);
+
+ return 0;
+ } else if (stmpe_pwm->stmpe->partnum == STMPE2403) {
+ /* STMPE2403 can simply set the right PWM value */
+ program[0] = LOAD | value;
+ program[1] = 0x0000;
+ } else if (stmpe_pwm->stmpe->partnum == STMPE2401) {
+ /* STMPE2401 need a complex program */
+ u16 incdec = 0x0000;
+
+ if (last < value)
+ /* Count up */
+ incdec = RAMPUP | (value - last);
+ else
+ /* Count down */
+ incdec = RAMPDOWN | (last - value);
+
+ /* Step to desired value, smoothly */
+ program[0] = PRESCALE_512 | STEPTIME_1 | incdec;
+
+ /* Loop eternally to 0x00 */
+ program[1] = BRANCH;
+ }
+
+ dev_dbg(chip->dev,
+ "PWM#%u: value = %02x, last_duty = %02x, program=%04x,%04x,%04x\n",
+ pwm->hwpwm, value, last, program[0], program[1],
+ program[2]);
+ stmpe_pwm->last_duty = value;
+ }
+
+ /*
+ * We can write programs of up to 64 16-bit words into this channel.
+ */
+ for (i = 0; i < ARRAY_SIZE(program); i++) {
+ u8 value;
+
+ value = (program[i] >> 8) & 0xff;
+
+ ret = stmpe_reg_write(stmpe_pwm->stmpe, offset, value);
+ if (ret) {
+ dev_err(chip->dev, "error writing register %02x: %d\n",
+ offset, ret);
+ return ret;
+ }
+
+ value = program[i] & 0xff;
+
+ ret = stmpe_reg_write(stmpe_pwm->stmpe, offset, value);
+ if (ret) {
+ dev_err(chip->dev, "error writing register %02x: %d\n",
+ offset, ret);
+ return ret;
+ }
+ }
+
+ /* If we were enabled, re-enable this PWM */
+ if (pwm_is_enabled(pwm))
+ stmpe_24xx_pwm_enable(chip, pwm);
+
+ /* Sleep for 200ms so we're sure it will take effect */
+ msleep(200);
+
+ dev_dbg(chip->dev, "programmed PWM#%u, %u bytes\n", pwm->hwpwm, i);
+
+ return 0;
+}
+
+static const struct pwm_ops stmpe_24xx_pwm_ops = {
+ .config = stmpe_24xx_pwm_config,
+ .enable = stmpe_24xx_pwm_enable,
+ .disable = stmpe_24xx_pwm_disable,
+ .owner = THIS_MODULE,
+};
+
+static int __init stmpe_pwm_probe(struct platform_device *pdev)
+{
+ struct stmpe *stmpe = dev_get_drvdata(pdev->dev.parent);
+ struct stmpe_pwm *pwm;
+ int ret;
+
+ pwm = devm_kzalloc(&pdev->dev, sizeof(*pwm), GFP_KERNEL);
+ if (!pwm)
+ return -ENOMEM;
+
+ pwm->stmpe = stmpe;
+ pwm->chip.dev = &pdev->dev;
+ pwm->chip.base = -1;
+
+ if (stmpe->partnum == STMPE2401 || stmpe->partnum == STMPE2403) {
+ pwm->chip.ops = &stmpe_24xx_pwm_ops;
+ pwm->chip.npwm = 3;
+ } else {
+ if (stmpe->partnum == STMPE1601)
+ dev_err(&pdev->dev, "STMPE1601 not yet supported\n");
+ else
+ dev_err(&pdev->dev, "Unknown STMPE PWM\n");
+
+ return -ENODEV;
+ }
+
+ ret = stmpe_enable(stmpe, STMPE_BLOCK_PWM);
+ if (ret)
+ return ret;
+
+ ret = pwmchip_add(&pwm->chip);
+ if (ret) {
+ stmpe_disable(stmpe, STMPE_BLOCK_PWM);
+ return ret;
+ }
+
+ platform_set_drvdata(pdev, pwm);
+
+ return 0;
+}
+
+static struct platform_driver stmpe_pwm_driver = {
+ .driver = {
+ .name = "stmpe-pwm",
+ },
+};
+builtin_platform_driver_probe(stmpe_pwm_driver, stmpe_pwm_probe);
diff --git a/drivers/pwm/pwm-tegra.c b/drivers/pwm/pwm-tegra.c
index d4de0607b502..e4647840cd6e 100644
--- a/drivers/pwm/pwm-tegra.c
+++ b/drivers/pwm/pwm-tegra.c
@@ -26,9 +26,11 @@
#include <linux/io.h>
#include <linux/module.h>
#include <linux/of.h>
+#include <linux/of_device.h>
#include <linux/pwm.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
+#include <linux/reset.h>
#define PWM_ENABLE (1 << 31)
#define PWM_DUTY_WIDTH 8
@@ -36,15 +38,20 @@
#define PWM_SCALE_WIDTH 13
#define PWM_SCALE_SHIFT 0
-#define NUM_PWM 4
+struct tegra_pwm_soc {
+ unsigned int num_channels;
+};
struct tegra_pwm_chip {
- struct pwm_chip chip;
- struct device *dev;
+ struct pwm_chip chip;
+ struct device *dev;
+
+ struct clk *clk;
+ struct reset_control*rst;
- struct clk *clk;
+ void __iomem *regs;
- void __iomem *mmio_base;
+ const struct tegra_pwm_soc *soc;
};
static inline struct tegra_pwm_chip *to_tegra_pwm_chip(struct pwm_chip *chip)
@@ -54,20 +61,20 @@ static inline struct tegra_pwm_chip *to_tegra_pwm_chip(struct pwm_chip *chip)
static inline u32 pwm_readl(struct tegra_pwm_chip *chip, unsigned int num)
{
- return readl(chip->mmio_base + (num << 4));
+ return readl(chip->regs + (num << 4));
}
static inline void pwm_writel(struct tegra_pwm_chip *chip, unsigned int num,
unsigned long val)
{
- writel(val, chip->mmio_base + (num << 4));
+ writel(val, chip->regs + (num << 4));
}
static int tegra_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
int duty_ns, int period_ns)
{
struct tegra_pwm_chip *pc = to_tegra_pwm_chip(chip);
- unsigned long long c;
+ unsigned long long c = duty_ns;
unsigned long rate, hz;
u32 val = 0;
int err;
@@ -77,7 +84,8 @@ static int tegra_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
* per (1 << PWM_DUTY_WIDTH) cycles and make sure to round to the
* nearest integer during division.
*/
- c = duty_ns * ((1 << PWM_DUTY_WIDTH) - 1) + period_ns / 2;
+ c *= (1 << PWM_DUTY_WIDTH);
+ c += period_ns / 2;
do_div(c, period_ns);
val = (u32)c << PWM_DUTY_SHIFT;
@@ -176,12 +184,13 @@ static int tegra_pwm_probe(struct platform_device *pdev)
if (!pwm)
return -ENOMEM;
+ pwm->soc = of_device_get_match_data(&pdev->dev);
pwm->dev = &pdev->dev;
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- pwm->mmio_base = devm_ioremap_resource(&pdev->dev, r);
- if (IS_ERR(pwm->mmio_base))
- return PTR_ERR(pwm->mmio_base);
+ pwm->regs = devm_ioremap_resource(&pdev->dev, r);
+ if (IS_ERR(pwm->regs))
+ return PTR_ERR(pwm->regs);
platform_set_drvdata(pdev, pwm);
@@ -189,14 +198,24 @@ static int tegra_pwm_probe(struct platform_device *pdev)
if (IS_ERR(pwm->clk))
return PTR_ERR(pwm->clk);
+ pwm->rst = devm_reset_control_get(&pdev->dev, "pwm");
+ if (IS_ERR(pwm->rst)) {
+ ret = PTR_ERR(pwm->rst);
+ dev_err(&pdev->dev, "Reset control is not found: %d\n", ret);
+ return ret;
+ }
+
+ reset_control_deassert(pwm->rst);
+
pwm->chip.dev = &pdev->dev;
pwm->chip.ops = &tegra_pwm_ops;
pwm->chip.base = -1;
- pwm->chip.npwm = NUM_PWM;
+ pwm->chip.npwm = pwm->soc->num_channels;
ret = pwmchip_add(&pwm->chip);
if (ret < 0) {
dev_err(&pdev->dev, "pwmchip_add() failed: %d\n", ret);
+ reset_control_assert(pwm->rst);
return ret;
}
@@ -206,12 +225,17 @@ static int tegra_pwm_probe(struct platform_device *pdev)
static int tegra_pwm_remove(struct platform_device *pdev)
{
struct tegra_pwm_chip *pc = platform_get_drvdata(pdev);
- int i;
+ unsigned int i;
+ int err;
if (WARN_ON(!pc))
return -ENODEV;
- for (i = 0; i < NUM_PWM; i++) {
+ err = clk_prepare_enable(pc->clk);
+ if (err < 0)
+ return err;
+
+ for (i = 0; i < pc->chip.npwm; i++) {
struct pwm_device *pwm = &pc->chip.pwms[i];
if (!pwm_is_enabled(pwm))
@@ -223,12 +247,23 @@ static int tegra_pwm_remove(struct platform_device *pdev)
clk_disable_unprepare(pc->clk);
}
+ reset_control_assert(pc->rst);
+ clk_disable_unprepare(pc->clk);
+
return pwmchip_remove(&pc->chip);
}
+static const struct tegra_pwm_soc tegra20_pwm_soc = {
+ .num_channels = 4,
+};
+
+static const struct tegra_pwm_soc tegra186_pwm_soc = {
+ .num_channels = 1,
+};
+
static const struct of_device_id tegra_pwm_of_match[] = {
- { .compatible = "nvidia,tegra20-pwm" },
- { .compatible = "nvidia,tegra30-pwm" },
+ { .compatible = "nvidia,tegra20-pwm", .data = &tegra20_pwm_soc },
+ { .compatible = "nvidia,tegra186-pwm", .data = &tegra186_pwm_soc },
{ }
};
diff --git a/drivers/pwm/pwm-tiecap.c b/drivers/pwm/pwm-tiecap.c
index 616af764a276..6ec342dd3eea 100644
--- a/drivers/pwm/pwm-tiecap.c
+++ b/drivers/pwm/pwm-tiecap.c
@@ -27,8 +27,6 @@
#include <linux/pwm.h>
#include <linux/of_device.h>
-#include "pwm-tipwmss.h"
-
/* ECAP registers and bits definitions */
#define CAP1 0x08
#define CAP2 0x0C
@@ -195,6 +193,7 @@ static const struct pwm_ops ecap_pwm_ops = {
};
static const struct of_device_id ecap_of_match[] = {
+ { .compatible = "ti,am3352-ecap" },
{ .compatible = "ti,am33xx-ecap" },
{},
};
@@ -202,11 +201,11 @@ MODULE_DEVICE_TABLE(of, ecap_of_match);
static int ecap_pwm_probe(struct platform_device *pdev)
{
+ struct device_node *np = pdev->dev.of_node;
int ret;
struct resource *r;
struct clk *clk;
struct ecap_pwm_chip *pc;
- u16 status;
pc = devm_kzalloc(&pdev->dev, sizeof(*pc), GFP_KERNEL);
if (!pc)
@@ -214,6 +213,13 @@ static int ecap_pwm_probe(struct platform_device *pdev)
clk = devm_clk_get(&pdev->dev, "fck");
if (IS_ERR(clk)) {
+ if (of_device_is_compatible(np, "ti,am33xx-ecap")) {
+ dev_warn(&pdev->dev, "Binding is obsolete.\n");
+ clk = devm_clk_get(pdev->dev.parent, "fck");
+ }
+ }
+
+ if (IS_ERR(clk)) {
dev_err(&pdev->dev, "failed to get clock\n");
return PTR_ERR(clk);
}
@@ -243,40 +249,15 @@ static int ecap_pwm_probe(struct platform_device *pdev)
}
pm_runtime_enable(&pdev->dev);
- pm_runtime_get_sync(&pdev->dev);
-
- status = pwmss_submodule_state_change(pdev->dev.parent,
- PWMSS_ECAPCLK_EN);
- if (!(status & PWMSS_ECAPCLK_EN_ACK)) {
- dev_err(&pdev->dev, "PWMSS config space clock enable failed\n");
- ret = -EINVAL;
- goto pwmss_clk_failure;
- }
-
- pm_runtime_put_sync(&pdev->dev);
platform_set_drvdata(pdev, pc);
return 0;
-
-pwmss_clk_failure:
- pm_runtime_put_sync(&pdev->dev);
- pm_runtime_disable(&pdev->dev);
- pwmchip_remove(&pc->chip);
- return ret;
}
static int ecap_pwm_remove(struct platform_device *pdev)
{
struct ecap_pwm_chip *pc = platform_get_drvdata(pdev);
- pm_runtime_get_sync(&pdev->dev);
- /*
- * Due to hardware misbehaviour, acknowledge of the stop_req
- * is missing. Hence checking of the status bit skipped.
- */
- pwmss_submodule_state_change(pdev->dev.parent, PWMSS_ECAPCLK_STOP_REQ);
- pm_runtime_put_sync(&pdev->dev);
-
pm_runtime_disable(&pdev->dev);
return pwmchip_remove(&pc->chip);
}
diff --git a/drivers/pwm/pwm-tiehrpwm.c b/drivers/pwm/pwm-tiehrpwm.c
index 6a41e66015b6..b5c6b0636893 100644
--- a/drivers/pwm/pwm-tiehrpwm.c
+++ b/drivers/pwm/pwm-tiehrpwm.c
@@ -27,8 +27,6 @@
#include <linux/pm_runtime.h>
#include <linux/of_device.h>
-#include "pwm-tipwmss.h"
-
/* EHRPWM registers and bits definitions */
/* Time base module registers */
@@ -426,6 +424,7 @@ static const struct pwm_ops ehrpwm_pwm_ops = {
};
static const struct of_device_id ehrpwm_of_match[] = {
+ { .compatible = "ti,am3352-ehrpwm" },
{ .compatible = "ti,am33xx-ehrpwm" },
{},
};
@@ -433,11 +432,11 @@ MODULE_DEVICE_TABLE(of, ehrpwm_of_match);
static int ehrpwm_pwm_probe(struct platform_device *pdev)
{
+ struct device_node *np = pdev->dev.of_node;
int ret;
struct resource *r;
struct clk *clk;
struct ehrpwm_pwm_chip *pc;
- u16 status;
pc = devm_kzalloc(&pdev->dev, sizeof(*pc), GFP_KERNEL);
if (!pc)
@@ -445,6 +444,13 @@ static int ehrpwm_pwm_probe(struct platform_device *pdev)
clk = devm_clk_get(&pdev->dev, "fck");
if (IS_ERR(clk)) {
+ if (of_device_is_compatible(np, "ti,am33xx-ecap")) {
+ dev_warn(&pdev->dev, "Binding is obsolete.\n");
+ clk = devm_clk_get(pdev->dev.parent, "fck");
+ }
+ }
+
+ if (IS_ERR(clk)) {
dev_err(&pdev->dev, "failed to get clock\n");
return PTR_ERR(clk);
}
@@ -487,27 +493,9 @@ static int ehrpwm_pwm_probe(struct platform_device *pdev)
}
pm_runtime_enable(&pdev->dev);
- pm_runtime_get_sync(&pdev->dev);
-
- status = pwmss_submodule_state_change(pdev->dev.parent,
- PWMSS_EPWMCLK_EN);
- if (!(status & PWMSS_EPWMCLK_EN_ACK)) {
- dev_err(&pdev->dev, "PWMSS config space clock enable failed\n");
- ret = -EINVAL;
- goto pwmss_clk_failure;
- }
-
- pm_runtime_put_sync(&pdev->dev);
platform_set_drvdata(pdev, pc);
return 0;
-
-pwmss_clk_failure:
- pm_runtime_put_sync(&pdev->dev);
- pm_runtime_disable(&pdev->dev);
- pwmchip_remove(&pc->chip);
- clk_unprepare(pc->tbclk);
- return ret;
}
static int ehrpwm_pwm_remove(struct platform_device *pdev)
@@ -516,14 +504,6 @@ static int ehrpwm_pwm_remove(struct platform_device *pdev)
clk_unprepare(pc->tbclk);
- pm_runtime_get_sync(&pdev->dev);
- /*
- * Due to hardware misbehaviour, acknowledge of the stop_req
- * is missing. Hence checking of the status bit skipped.
- */
- pwmss_submodule_state_change(pdev->dev.parent, PWMSS_EPWMCLK_STOP_REQ);
- pm_runtime_put_sync(&pdev->dev);
-
pm_runtime_put_sync(&pdev->dev);
pm_runtime_disable(&pdev->dev);
return pwmchip_remove(&pc->chip);
diff --git a/drivers/pwm/pwm-tipwmss.c b/drivers/pwm/pwm-tipwmss.c
index 5cf65a15d021..829f4991c96f 100644
--- a/drivers/pwm/pwm-tipwmss.c
+++ b/drivers/pwm/pwm-tipwmss.c
@@ -22,32 +22,6 @@
#include <linux/pm_runtime.h>
#include <linux/of_device.h>
-#include "pwm-tipwmss.h"
-
-#define PWMSS_CLKCONFIG 0x8 /* Clock gating reg */
-#define PWMSS_CLKSTATUS 0xc /* Clock gating status reg */
-
-struct pwmss_info {
- void __iomem *mmio_base;
- struct mutex pwmss_lock;
- u16 pwmss_clkconfig;
-};
-
-u16 pwmss_submodule_state_change(struct device *dev, int set)
-{
- struct pwmss_info *info = dev_get_drvdata(dev);
- u16 val;
-
- mutex_lock(&info->pwmss_lock);
- val = readw(info->mmio_base + PWMSS_CLKCONFIG);
- val |= set;
- writew(val , info->mmio_base + PWMSS_CLKCONFIG);
- mutex_unlock(&info->pwmss_lock);
-
- return readw(info->mmio_base + PWMSS_CLKSTATUS);
-}
-EXPORT_SYMBOL(pwmss_submodule_state_change);
-
static const struct of_device_id pwmss_of_match[] = {
{ .compatible = "ti,am33xx-pwmss" },
{},
@@ -57,24 +31,10 @@ MODULE_DEVICE_TABLE(of, pwmss_of_match);
static int pwmss_probe(struct platform_device *pdev)
{
int ret;
- struct resource *r;
- struct pwmss_info *info;
struct device_node *node = pdev->dev.of_node;
- info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
- if (!info)
- return -ENOMEM;
-
- mutex_init(&info->pwmss_lock);
-
- r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- info->mmio_base = devm_ioremap_resource(&pdev->dev, r);
- if (IS_ERR(info->mmio_base))
- return PTR_ERR(info->mmio_base);
-
pm_runtime_enable(&pdev->dev);
pm_runtime_get_sync(&pdev->dev);
- platform_set_drvdata(pdev, info);
/* Populate all the child nodes here... */
ret = of_platform_populate(node, NULL, NULL, &pdev->dev);
@@ -86,30 +46,21 @@ static int pwmss_probe(struct platform_device *pdev)
static int pwmss_remove(struct platform_device *pdev)
{
- struct pwmss_info *info = platform_get_drvdata(pdev);
-
pm_runtime_put_sync(&pdev->dev);
pm_runtime_disable(&pdev->dev);
- mutex_destroy(&info->pwmss_lock);
return 0;
}
#ifdef CONFIG_PM_SLEEP
static int pwmss_suspend(struct device *dev)
{
- struct pwmss_info *info = dev_get_drvdata(dev);
-
- info->pwmss_clkconfig = readw(info->mmio_base + PWMSS_CLKCONFIG);
pm_runtime_put_sync(dev);
return 0;
}
static int pwmss_resume(struct device *dev)
{
- struct pwmss_info *info = dev_get_drvdata(dev);
-
pm_runtime_get_sync(dev);
- writew(info->pwmss_clkconfig, info->mmio_base + PWMSS_CLKCONFIG);
return 0;
}
#endif
diff --git a/drivers/pwm/pwm-tipwmss.h b/drivers/pwm/pwm-tipwmss.h
deleted file mode 100644
index 10ad8040408b..000000000000
--- a/drivers/pwm/pwm-tipwmss.h
+++ /dev/null
@@ -1,39 +0,0 @@
-/*
- * TI PWM Subsystem driver
- *
- * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- */
-
-#ifndef __TIPWMSS_H
-#define __TIPWMSS_H
-
-/* PWM substem clock gating */
-#define PWMSS_ECAPCLK_EN BIT(0)
-#define PWMSS_ECAPCLK_STOP_REQ BIT(1)
-#define PWMSS_EPWMCLK_EN BIT(8)
-#define PWMSS_EPWMCLK_STOP_REQ BIT(9)
-
-#define PWMSS_ECAPCLK_EN_ACK BIT(0)
-#define PWMSS_EPWMCLK_EN_ACK BIT(8)
-
-#ifdef CONFIG_PWM_TIPWMSS
-extern u16 pwmss_submodule_state_change(struct device *dev, int set);
-#else
-static inline u16 pwmss_submodule_state_change(struct device *dev, int set)
-{
- /* return success status value */
- return 0xFFFF;
-}
-#endif
-#endif /* __TIPWMSS_H */
diff --git a/drivers/pwm/sysfs.c b/drivers/pwm/sysfs.c
index 01695d48dd54..18ed725594c3 100644
--- a/drivers/pwm/sysfs.c
+++ b/drivers/pwm/sysfs.c
@@ -208,16 +208,33 @@ static ssize_t polarity_store(struct device *child,
return ret ? : size;
}
+static ssize_t capture_show(struct device *child,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct pwm_device *pwm = child_to_pwm_device(child);
+ struct pwm_capture result;
+ int ret;
+
+ ret = pwm_capture(pwm, &result, jiffies_to_msecs(HZ));
+ if (ret)
+ return ret;
+
+ return sprintf(buf, "%u %u\n", result.period, result.duty_cycle);
+}
+
static DEVICE_ATTR_RW(period);
static DEVICE_ATTR_RW(duty_cycle);
static DEVICE_ATTR_RW(enable);
static DEVICE_ATTR_RW(polarity);
+static DEVICE_ATTR_RO(capture);
static struct attribute *pwm_attrs[] = {
&dev_attr_period.attr,
&dev_attr_duty_cycle.attr,
&dev_attr_enable.attr,
&dev_attr_polarity.attr,
+ &dev_attr_capture.attr,
NULL
};
ATTRIBUTE_GROUPS(pwm);
diff --git a/drivers/rapidio/rio_cm.c b/drivers/rapidio/rio_cm.c
index cecc15a880de..3fa17ac8df54 100644
--- a/drivers/rapidio/rio_cm.c
+++ b/drivers/rapidio/rio_cm.c
@@ -1080,8 +1080,8 @@ static int riocm_send_ack(struct rio_channel *ch)
static struct rio_channel *riocm_ch_accept(u16 ch_id, u16 *new_ch_id,
long timeout)
{
- struct rio_channel *ch = NULL;
- struct rio_channel *new_ch = NULL;
+ struct rio_channel *ch;
+ struct rio_channel *new_ch;
struct conn_req *req;
struct cm_peer *peer;
int found = 0;
@@ -1155,6 +1155,7 @@ static struct rio_channel *riocm_ch_accept(u16 ch_id, u16 *new_ch_id,
spin_unlock_bh(&ch->lock);
riocm_put_channel(ch);
+ ch = NULL;
kfree(req);
down_read(&rdev_sem);
@@ -1172,7 +1173,7 @@ static struct rio_channel *riocm_ch_accept(u16 ch_id, u16 *new_ch_id,
if (!found) {
/* If peer device object not found, simply ignore the request */
err = -ENODEV;
- goto err_nodev;
+ goto err_put_new_ch;
}
new_ch->rdev = peer->rdev;
@@ -1184,15 +1185,16 @@ static struct rio_channel *riocm_ch_accept(u16 ch_id, u16 *new_ch_id,
*new_ch_id = new_ch->id;
return new_ch;
+
+err_put_new_ch:
+ spin_lock_bh(&idr_lock);
+ idr_remove(&ch_idr, new_ch->id);
+ spin_unlock_bh(&idr_lock);
+ riocm_put_channel(new_ch);
+
err_put:
- riocm_put_channel(ch);
-err_nodev:
- if (new_ch) {
- spin_lock_bh(&idr_lock);
- idr_remove(&ch_idr, new_ch->id);
- spin_unlock_bh(&idr_lock);
- riocm_put_channel(new_ch);
- }
+ if (ch)
+ riocm_put_channel(ch);
*new_ch_id = 0;
return ERR_PTR(err);
}
diff --git a/drivers/regulator/pwm-regulator.c b/drivers/regulator/pwm-regulator.c
index 666bc3bb52ef..c24524242da2 100644
--- a/drivers/regulator/pwm-regulator.c
+++ b/drivers/regulator/pwm-regulator.c
@@ -22,6 +22,12 @@
#include <linux/pwm.h>
#include <linux/gpio/consumer.h>
+struct pwm_continuous_reg_data {
+ unsigned int min_uV_dutycycle;
+ unsigned int max_uV_dutycycle;
+ unsigned int dutycycle_unit;
+};
+
struct pwm_regulator_data {
/* Shared */
struct pwm_device *pwm;
@@ -29,6 +35,9 @@ struct pwm_regulator_data {
/* Voltage table */
struct pwm_voltages *duty_cycle_table;
+ /* Continuous mode info */
+ struct pwm_continuous_reg_data continuous;
+
/* regulator descriptor */
struct regulator_desc desc;
@@ -37,9 +46,6 @@ struct pwm_regulator_data {
int state;
- /* Continuous voltage */
- int volt_uV;
-
/* Enable GPIO */
struct gpio_desc *enb_gpio;
};
@@ -52,10 +58,31 @@ struct pwm_voltages {
/**
* Voltage table call-backs
*/
+static void pwm_regulator_init_state(struct regulator_dev *rdev)
+{
+ struct pwm_regulator_data *drvdata = rdev_get_drvdata(rdev);
+ struct pwm_state pwm_state;
+ unsigned int dutycycle;
+ int i;
+
+ pwm_get_state(drvdata->pwm, &pwm_state);
+ dutycycle = pwm_get_relative_duty_cycle(&pwm_state, 100);
+
+ for (i = 0; i < rdev->desc->n_voltages; i++) {
+ if (dutycycle == drvdata->duty_cycle_table[i].dutycycle) {
+ drvdata->state = i;
+ return;
+ }
+ }
+}
+
static int pwm_regulator_get_voltage_sel(struct regulator_dev *rdev)
{
struct pwm_regulator_data *drvdata = rdev_get_drvdata(rdev);
+ if (drvdata->state < 0)
+ pwm_regulator_init_state(rdev);
+
return drvdata->state;
}
@@ -63,16 +90,14 @@ static int pwm_regulator_set_voltage_sel(struct regulator_dev *rdev,
unsigned selector)
{
struct pwm_regulator_data *drvdata = rdev_get_drvdata(rdev);
- struct pwm_args pargs;
- int dutycycle;
+ struct pwm_state pstate;
int ret;
- pwm_get_args(drvdata->pwm, &pargs);
-
- dutycycle = (pargs.period *
- drvdata->duty_cycle_table[selector].dutycycle) / 100;
+ pwm_init_state(drvdata->pwm, &pstate);
+ pwm_set_relative_duty_cycle(&pstate,
+ drvdata->duty_cycle_table[selector].dutycycle, 100);
- ret = pwm_config(drvdata->pwm, dutycycle, pargs.period);
+ ret = pwm_apply_state(drvdata->pwm, &pstate);
if (ret) {
dev_err(&rdev->dev, "Failed to configure PWM: %d\n", ret);
return ret;
@@ -129,57 +154,90 @@ static int pwm_regulator_is_enabled(struct regulator_dev *dev)
static int pwm_regulator_get_voltage(struct regulator_dev *rdev)
{
struct pwm_regulator_data *drvdata = rdev_get_drvdata(rdev);
+ unsigned int min_uV_duty = drvdata->continuous.min_uV_dutycycle;
+ unsigned int max_uV_duty = drvdata->continuous.max_uV_dutycycle;
+ unsigned int duty_unit = drvdata->continuous.dutycycle_unit;
+ int min_uV = rdev->constraints->min_uV;
+ int max_uV = rdev->constraints->max_uV;
+ int diff_uV = max_uV - min_uV;
+ struct pwm_state pstate;
+ unsigned int diff_duty;
+ unsigned int voltage;
+
+ pwm_get_state(drvdata->pwm, &pstate);
+
+ voltage = pwm_get_relative_duty_cycle(&pstate, duty_unit);
+
+ /*
+ * The dutycycle for min_uV might be greater than the one for max_uV.
+ * This is happening when the user needs an inversed polarity, but the
+ * PWM device does not support inversing it in hardware.
+ */
+ if (max_uV_duty < min_uV_duty) {
+ voltage = min_uV_duty - voltage;
+ diff_duty = min_uV_duty - max_uV_duty;
+ } else {
+ voltage = voltage - min_uV_duty;
+ diff_duty = max_uV_duty - min_uV_duty;
+ }
- return drvdata->volt_uV;
+ voltage = DIV_ROUND_CLOSEST_ULL((u64)voltage * diff_uV, diff_duty);
+
+ return voltage + min_uV;
}
static int pwm_regulator_set_voltage(struct regulator_dev *rdev,
- int min_uV, int max_uV,
- unsigned *selector)
+ int req_min_uV, int req_max_uV,
+ unsigned int *selector)
{
struct pwm_regulator_data *drvdata = rdev_get_drvdata(rdev);
+ unsigned int min_uV_duty = drvdata->continuous.min_uV_dutycycle;
+ unsigned int max_uV_duty = drvdata->continuous.max_uV_dutycycle;
+ unsigned int duty_unit = drvdata->continuous.dutycycle_unit;
unsigned int ramp_delay = rdev->constraints->ramp_delay;
- struct pwm_args pargs;
- unsigned int req_diff = min_uV - rdev->constraints->min_uV;
- unsigned int diff;
- unsigned int duty_pulse;
- u64 req_period;
- u32 rem;
+ int min_uV = rdev->constraints->min_uV;
+ int max_uV = rdev->constraints->max_uV;
+ int diff_uV = max_uV - min_uV;
+ struct pwm_state pstate;
int old_uV = pwm_regulator_get_voltage(rdev);
+ unsigned int diff_duty;
+ unsigned int dutycycle;
int ret;
- pwm_get_args(drvdata->pwm, &pargs);
- diff = rdev->constraints->max_uV - rdev->constraints->min_uV;
+ pwm_init_state(drvdata->pwm, &pstate);
- /* First try to find out if we get the iduty cycle time which is
- * factor of PWM period time. If (request_diff_to_min * pwm_period)
- * is perfect divided by voltage_range_diff then it is possible to
- * get duty cycle time which is factor of PWM period. This will help
- * to get output voltage nearer to requested value as there is no
- * calculation loss.
+ /*
+ * The dutycycle for min_uV might be greater than the one for max_uV.
+ * This is happening when the user needs an inversed polarity, but the
+ * PWM device does not support inversing it in hardware.
*/
- req_period = req_diff * pargs.period;
- div_u64_rem(req_period, diff, &rem);
- if (!rem) {
- do_div(req_period, diff);
- duty_pulse = (unsigned int)req_period;
- } else {
- duty_pulse = (pargs.period / 100) * ((req_diff * 100) / diff);
- }
+ if (max_uV_duty < min_uV_duty)
+ diff_duty = min_uV_duty - max_uV_duty;
+ else
+ diff_duty = max_uV_duty - min_uV_duty;
+
+ dutycycle = DIV_ROUND_CLOSEST_ULL((u64)(req_min_uV - min_uV) *
+ diff_duty,
+ diff_uV);
+
+ if (max_uV_duty < min_uV_duty)
+ dutycycle = min_uV_duty - dutycycle;
+ else
+ dutycycle = min_uV_duty + dutycycle;
+
+ pwm_set_relative_duty_cycle(&pstate, dutycycle, duty_unit);
- ret = pwm_config(drvdata->pwm, duty_pulse, pargs.period);
+ ret = pwm_apply_state(drvdata->pwm, &pstate);
if (ret) {
dev_err(&rdev->dev, "Failed to configure PWM: %d\n", ret);
return ret;
}
- drvdata->volt_uV = min_uV;
-
if ((ramp_delay == 0) || !pwm_regulator_is_enabled(rdev))
return 0;
/* Ramp delay is in uV/uS. Adjust to uS and delay */
- ramp_delay = DIV_ROUND_UP(abs(min_uV - old_uV), ramp_delay);
+ ramp_delay = DIV_ROUND_UP(abs(req_min_uV - old_uV), ramp_delay);
usleep_range(ramp_delay, ramp_delay + DIV_ROUND_UP(ramp_delay, 10));
return 0;
@@ -239,6 +297,7 @@ static int pwm_regulator_init_table(struct platform_device *pdev,
return ret;
}
+ drvdata->state = -EINVAL;
drvdata->duty_cycle_table = duty_cycle_table;
memcpy(&drvdata->ops, &pwm_regulator_voltage_table_ops,
sizeof(drvdata->ops));
@@ -251,11 +310,28 @@ static int pwm_regulator_init_table(struct platform_device *pdev,
static int pwm_regulator_init_continuous(struct platform_device *pdev,
struct pwm_regulator_data *drvdata)
{
+ u32 dutycycle_range[2] = { 0, 100 };
+ u32 dutycycle_unit = 100;
+
memcpy(&drvdata->ops, &pwm_regulator_voltage_continuous_ops,
sizeof(drvdata->ops));
drvdata->desc.ops = &drvdata->ops;
drvdata->desc.continuous_voltage_range = true;
+ of_property_read_u32_array(pdev->dev.of_node,
+ "pwm-dutycycle-range",
+ dutycycle_range, 2);
+ of_property_read_u32(pdev->dev.of_node, "pwm-dutycycle-unit",
+ &dutycycle_unit);
+
+ if (dutycycle_range[0] > dutycycle_unit ||
+ dutycycle_range[1] > dutycycle_unit)
+ return -EINVAL;
+
+ drvdata->continuous.dutycycle_unit = dutycycle_unit;
+ drvdata->continuous.min_uV_dutycycle = dutycycle_range[0];
+ drvdata->continuous.max_uV_dutycycle = dutycycle_range[1];
+
return 0;
}
@@ -316,11 +392,9 @@ static int pwm_regulator_probe(struct platform_device *pdev)
return ret;
}
- /*
- * FIXME: pwm_apply_args() should be removed when switching to the
- * atomic PWM API.
- */
- pwm_apply_args(drvdata->pwm);
+ ret = pwm_adjust_config(drvdata->pwm);
+ if (ret)
+ return ret;
regulator = devm_regulator_register(&pdev->dev,
&drvdata->desc, &config);
diff --git a/drivers/remoteproc/qcom_q6v5_pil.c b/drivers/remoteproc/qcom_q6v5_pil.c
index 24791886219a..2a1b2c7d8f2c 100644
--- a/drivers/remoteproc/qcom_q6v5_pil.c
+++ b/drivers/remoteproc/qcom_q6v5_pil.c
@@ -349,13 +349,12 @@ static void q6v5proc_halt_axi_port(struct q6v5 *qproc,
static int q6v5_mpss_init_image(struct q6v5 *qproc, const struct firmware *fw)
{
- DEFINE_DMA_ATTRS(attrs);
+ unsigned long dma_attrs = DMA_ATTR_FORCE_CONTIGUOUS;
dma_addr_t phys;
void *ptr;
int ret;
- dma_set_attr(DMA_ATTR_FORCE_CONTIGUOUS, &attrs);
- ptr = dma_alloc_attrs(qproc->dev, fw->size, &phys, GFP_KERNEL, &attrs);
+ ptr = dma_alloc_attrs(qproc->dev, fw->size, &phys, GFP_KERNEL, dma_attrs);
if (!ptr) {
dev_err(qproc->dev, "failed to allocate mdt buffer\n");
return -ENOMEM;
@@ -372,7 +371,7 @@ static int q6v5_mpss_init_image(struct q6v5 *qproc, const struct firmware *fw)
else if (ret < 0)
dev_err(qproc->dev, "MPSS header authentication failed: %d\n", ret);
- dma_free_attrs(qproc->dev, fw->size, ptr, phys, &attrs);
+ dma_free_attrs(qproc->dev, fw->size, ptr, phys, dma_attrs);
return ret < 0 ? ret : 0;
}
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index 18639e0cb6e2..e215f50794b6 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -5,6 +5,10 @@
config RTC_LIB
bool
+config RTC_MC146818_LIB
+ bool
+ select RTC_LIB
+
menuconfig RTC_CLASS
bool "Real Time Clock"
default n
@@ -574,10 +578,10 @@ config RTC_DRV_EM3027
will be called rtc-em3027.
config RTC_DRV_RV8803
- tristate "Micro Crystal RV8803"
+ tristate "Micro Crystal RV8803, Epson RX8900"
help
- If you say yes here you get support for the Micro Crystal
- RV8803 RTC chips.
+ If you say yes here you get support for the Micro Crystal RV8803 and
+ Epson RX8900 RTC chips.
This driver can also be built as a module. If so, the module
will be called rtc-rv8803.
@@ -670,6 +674,18 @@ config RTC_DRV_DS1390
This driver can also be built as a module. If so, the module
will be called rtc-ds1390.
+config RTC_DRV_MAX6916
+ tristate "Maxim MAX6916"
+ help
+ If you say yes here you will get support for the
+ Maxim MAX6916 SPI RTC chip.
+
+ This driver only supports the RTC feature, and not other chip
+ features such as alarms.
+
+ This driver can also be built as a module. If so, the module
+ will be called rtc-max6916.
+
config RTC_DRV_R9701
tristate "Epson RTC-9701JE"
help
@@ -795,8 +811,9 @@ comment "Platform RTC drivers"
config RTC_DRV_CMOS
tristate "PC-style 'CMOS'"
- depends on X86 || ARM || M32R || PPC || MIPS || SPARC64
+ depends on X86 || ARM || M32R || PPC || MIPS || SPARC64 || MN10300
default y if X86
+ select RTC_MC146818_LIB
help
Say "yes" here to get direct support for the real time clock
found in every PC or ACPI-based system, and some other boards.
@@ -815,6 +832,7 @@ config RTC_DRV_CMOS
config RTC_DRV_ALPHA
bool "Alpha PC-style CMOS"
depends on ALPHA
+ select RTC_MC146818_LIB
default y
help
Direct support for the real-time clock found on every Alpha
diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile
index ea2833723fa9..7cf7ad559c79 100644
--- a/drivers/rtc/Makefile
+++ b/drivers/rtc/Makefile
@@ -8,6 +8,7 @@ obj-$(CONFIG_RTC_LIB) += rtc-lib.o
obj-$(CONFIG_RTC_HCTOSYS) += hctosys.o
obj-$(CONFIG_RTC_SYSTOHC) += systohc.o
obj-$(CONFIG_RTC_CLASS) += rtc-core.o
+obj-$(CONFIG_RTC_MC146818_LIB) += rtc-mc146818-lib.o
rtc-core-y := class.o interface.o
ifdef CONFIG_RTC_DRV_EFI
@@ -85,6 +86,7 @@ obj-$(CONFIG_RTC_DRV_M48T59) += rtc-m48t59.o
obj-$(CONFIG_RTC_DRV_M48T86) += rtc-m48t86.o
obj-$(CONFIG_RTC_DRV_MAX6900) += rtc-max6900.o
obj-$(CONFIG_RTC_DRV_MAX6902) += rtc-max6902.o
+obj-$(CONFIG_RTC_DRV_MAX6916) += rtc-max6916.o
obj-$(CONFIG_RTC_DRV_MAX77686) += rtc-max77686.o
obj-$(CONFIG_RTC_DRV_MAX8907) += rtc-max8907.o
obj-$(CONFIG_RTC_DRV_MAX8925) += rtc-max8925.o
diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c
index 9ef5f6f89f98..84a52db9b05f 100644
--- a/drivers/rtc/interface.c
+++ b/drivers/rtc/interface.c
@@ -104,7 +104,17 @@ static int rtc_read_alarm_internal(struct rtc_device *rtc, struct rtc_wkalrm *al
else if (!rtc->ops->read_alarm)
err = -EINVAL;
else {
- memset(alarm, 0, sizeof(struct rtc_wkalrm));
+ alarm->enabled = 0;
+ alarm->pending = 0;
+ alarm->time.tm_sec = -1;
+ alarm->time.tm_min = -1;
+ alarm->time.tm_hour = -1;
+ alarm->time.tm_mday = -1;
+ alarm->time.tm_mon = -1;
+ alarm->time.tm_year = -1;
+ alarm->time.tm_wday = -1;
+ alarm->time.tm_yday = -1;
+ alarm->time.tm_isdst = -1;
err = rtc->ops->read_alarm(rtc->dev.parent, alarm);
}
@@ -383,7 +393,7 @@ int rtc_initialize_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm)
rtc->aie_timer.node.expires = rtc_tm_to_ktime(alarm->time);
rtc->aie_timer.period = ktime_set(0, 0);
- /* Alarm has to be enabled & in the futrure for us to enqueue it */
+ /* Alarm has to be enabled & in the future for us to enqueue it */
if (alarm->enabled && (rtc_tm_to_ktime(now).tv64 <
rtc->aie_timer.node.expires.tv64)) {
@@ -395,8 +405,6 @@ int rtc_initialize_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm)
}
EXPORT_SYMBOL_GPL(rtc_initialize_alarm);
-
-
int rtc_alarm_irq_enable(struct rtc_device *rtc, unsigned int enabled)
{
int err = mutex_lock_interruptible(&rtc->ops_lock);
@@ -748,9 +756,23 @@ EXPORT_SYMBOL_GPL(rtc_irq_set_freq);
*/
static int rtc_timer_enqueue(struct rtc_device *rtc, struct rtc_timer *timer)
{
+ struct timerqueue_node *next = timerqueue_getnext(&rtc->timerqueue);
+ struct rtc_time tm;
+ ktime_t now;
+
timer->enabled = 1;
+ __rtc_read_time(rtc, &tm);
+ now = rtc_tm_to_ktime(tm);
+
+ /* Skip over expired timers */
+ while (next) {
+ if (next->expires.tv64 >= now.tv64)
+ break;
+ next = timerqueue_iterate_next(next);
+ }
+
timerqueue_add(&rtc->timerqueue, &timer->node);
- if (&timer->node == timerqueue_getnext(&rtc->timerqueue)) {
+ if (!next) {
struct rtc_wkalrm alarm;
int err;
alarm.time = rtc_ktime_to_tm(timer->node.expires);
diff --git a/drivers/rtc/rtc-abx80x.c b/drivers/rtc/rtc-abx80x.c
index ba0d61934d35..fea9a60b06cf 100644
--- a/drivers/rtc/rtc-abx80x.c
+++ b/drivers/rtc/rtc-abx80x.c
@@ -643,17 +643,15 @@ static int abx80x_probe(struct i2c_client *client,
return err;
}
- err = devm_add_action(&client->dev, rtc_calib_remove_sysfs_group,
- &client->dev);
- if (err) {
- rtc_calib_remove_sysfs_group(&client->dev);
+ err = devm_add_action_or_reset(&client->dev,
+ rtc_calib_remove_sysfs_group,
+ &client->dev);
+ if (err)
dev_err(&client->dev,
"Failed to add sysfs cleanup action: %d\n",
err);
- return err;
- }
- return 0;
+ return err;
}
static int abx80x_remove(struct i2c_client *client)
diff --git a/drivers/rtc/rtc-asm9260.c b/drivers/rtc/rtc-asm9260.c
index 355fdb97a006..5219916ce11d 100644
--- a/drivers/rtc/rtc-asm9260.c
+++ b/drivers/rtc/rtc-asm9260.c
@@ -343,7 +343,6 @@ static struct platform_driver asm9260_rtc_driver = {
.remove = asm9260_rtc_remove,
.driver = {
.name = "asm9260-rtc",
- .owner = THIS_MODULE,
.of_match_table = asm9260_dt_ids,
},
};
diff --git a/drivers/rtc/rtc-at91sam9.c b/drivers/rtc/rtc-at91sam9.c
index 99732e6f8c3b..7418a763ce52 100644
--- a/drivers/rtc/rtc-at91sam9.c
+++ b/drivers/rtc/rtc-at91sam9.c
@@ -375,6 +375,7 @@ static int at91_rtc_probe(struct platform_device *pdev)
if (!rtc)
return -ENOMEM;
+ spin_lock_init(&rtc->lock);
rtc->irq = irq;
/* platform setup code should have handled this; sigh */
diff --git a/drivers/rtc/rtc-cmos.c b/drivers/rtc/rtc-cmos.c
index fbe9c72438e1..43745cac0141 100644
--- a/drivers/rtc/rtc-cmos.c
+++ b/drivers/rtc/rtc-cmos.c
@@ -43,7 +43,7 @@
#include <linux/of_platform.h>
/* this is for "generic access to PC-style RTC" using CMOS_READ/CMOS_WRITE */
-#include <asm-generic/rtc.h>
+#include <linux/mc146818rtc.h>
struct cmos_rtc {
struct rtc_device *rtc;
@@ -190,10 +190,10 @@ static inline void cmos_write_bank2(unsigned char val, unsigned char addr)
static int cmos_read_time(struct device *dev, struct rtc_time *t)
{
/* REVISIT: if the clock has a "century" register, use
- * that instead of the heuristic in get_rtc_time().
+ * that instead of the heuristic in mc146818_get_time().
* That'll make Y3K compatility (year > 2070) easy!
*/
- get_rtc_time(t);
+ mc146818_get_time(t);
return 0;
}
@@ -205,7 +205,7 @@ static int cmos_set_time(struct device *dev, struct rtc_time *t)
* takes effect exactly 500ms after we write the register.
* (Also queueing and other delays before we get this far.)
*/
- return set_rtc_time(t);
+ return mc146818_set_time(t);
}
static int cmos_read_alarm(struct device *dev, struct rtc_wkalrm *t)
@@ -220,8 +220,6 @@ static int cmos_read_alarm(struct device *dev, struct rtc_wkalrm *t)
* Some also support day and month, for alarms up to a year in
* the future.
*/
- t->time.tm_mday = -1;
- t->time.tm_mon = -1;
spin_lock_irq(&rtc_lock);
t->time.tm_sec = CMOS_READ(RTC_SECONDS_ALARM);
@@ -272,7 +270,6 @@ static int cmos_read_alarm(struct device *dev, struct rtc_wkalrm *t)
}
}
}
- t->time.tm_year = -1;
t->enabled = !!(rtc_control & RTC_AIE);
t->pending = 0;
@@ -630,7 +627,7 @@ cmos_do_probe(struct device *dev, struct resource *ports, int rtc_irq)
address_space = 64;
#elif defined(__i386__) || defined(__x86_64__) || defined(__arm__) \
|| defined(__sparc__) || defined(__mips__) \
- || defined(__powerpc__)
+ || defined(__powerpc__) || defined(CONFIG_MN10300)
address_space = 128;
#else
#warning Assuming 128 bytes of RTC+NVRAM address space, not 64 bytes.
@@ -1142,14 +1139,14 @@ static __init void cmos_of_init(struct platform_device *pdev)
if (val)
CMOS_WRITE(be32_to_cpup(val), RTC_FREQ_SELECT);
- get_rtc_time(&time);
+ cmos_read_time(&pdev->dev, &time);
ret = rtc_valid_tm(&time);
if (ret) {
struct rtc_time def_time = {
.tm_year = 1,
.tm_mday = 1,
};
- set_rtc_time(&def_time);
+ cmos_set_time(&pdev->dev, &def_time);
}
}
#else
diff --git a/drivers/rtc/rtc-da9052.c b/drivers/rtc/rtc-da9052.c
index a20bcf0e33cd..4273377562ec 100644
--- a/drivers/rtc/rtc-da9052.c
+++ b/drivers/rtc/rtc-da9052.c
@@ -85,6 +85,7 @@ static int da9052_read_alarm(struct da9052_rtc *rtc, struct rtc_time *rtc_tm)
rtc_tm->tm_mday = v[0][2] & DA9052_RTC_DAY;
rtc_tm->tm_hour = v[0][1] & DA9052_RTC_HOUR;
rtc_tm->tm_min = v[0][0] & DA9052_RTC_MIN;
+ rtc_tm->tm_sec = 0;
ret = rtc_valid_tm(rtc_tm);
return ret;
diff --git a/drivers/rtc/rtc-da9055.c b/drivers/rtc/rtc-da9055.c
index 7ec0872d5e3b..678af8648c45 100644
--- a/drivers/rtc/rtc-da9055.c
+++ b/drivers/rtc/rtc-da9055.c
@@ -74,6 +74,7 @@ static int da9055_read_alarm(struct da9055 *da9055, struct rtc_time *rtc_tm)
rtc_tm->tm_mday = v[2] & DA9055_RTC_ALM_DAY;
rtc_tm->tm_hour = v[1] & DA9055_RTC_ALM_HOUR;
rtc_tm->tm_min = v[0] & DA9055_RTC_ALM_MIN;
+ rtc_tm->tm_sec = 0;
return rtc_valid_tm(rtc_tm);
}
diff --git a/drivers/rtc/rtc-davinci.c b/drivers/rtc/rtc-davinci.c
index c5432bf64e1c..dba60c1dfce2 100644
--- a/drivers/rtc/rtc-davinci.c
+++ b/drivers/rtc/rtc-davinci.c
@@ -388,6 +388,8 @@ static int davinci_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alm)
u8 day0, day1;
unsigned long flags;
+ alm->time.tm_sec = 0;
+
spin_lock_irqsave(&davinci_rtc_lock, flags);
davinci_rtcss_calendar_wait(davinci_rtc);
diff --git a/drivers/rtc/rtc-ds1286.c b/drivers/rtc/rtc-ds1286.c
index 756e509f6ed2..ef75c349dff9 100644
--- a/drivers/rtc/rtc-ds1286.c
+++ b/drivers/rtc/rtc-ds1286.c
@@ -16,7 +16,7 @@
#include <linux/rtc.h>
#include <linux/platform_device.h>
#include <linux/bcd.h>
-#include <linux/ds1286.h>
+#include <linux/rtc/ds1286.h>
#include <linux/io.h>
#include <linux/slab.h>
diff --git a/drivers/rtc/rtc-ds1305.c b/drivers/rtc/rtc-ds1305.c
index 8e41c4613e51..72b22935eb62 100644
--- a/drivers/rtc/rtc-ds1305.c
+++ b/drivers/rtc/rtc-ds1305.c
@@ -313,13 +313,6 @@ static int ds1305_get_alarm(struct device *dev, struct rtc_wkalrm *alm)
alm->time.tm_sec = bcd2bin(buf[DS1305_SEC]);
alm->time.tm_min = bcd2bin(buf[DS1305_MIN]);
alm->time.tm_hour = bcd2hour(buf[DS1305_HOUR]);
- alm->time.tm_mday = -1;
- alm->time.tm_mon = -1;
- alm->time.tm_year = -1;
- /* next three fields are unused by Linux */
- alm->time.tm_wday = -1;
- alm->time.tm_mday = -1;
- alm->time.tm_isdst = -1;
return 0;
}
diff --git a/drivers/rtc/rtc-ds1307.c b/drivers/rtc/rtc-ds1307.c
index 821d9c089cdb..8e1c5cb6ece6 100644
--- a/drivers/rtc/rtc-ds1307.c
+++ b/drivers/rtc/rtc-ds1307.c
@@ -482,11 +482,6 @@ static int ds1337_read_alarm(struct device *dev, struct rtc_wkalrm *t)
t->time.tm_min = bcd2bin(ds1307->regs[1] & 0x7f);
t->time.tm_hour = bcd2bin(ds1307->regs[2] & 0x3f);
t->time.tm_mday = bcd2bin(ds1307->regs[3] & 0x3f);
- t->time.tm_mon = -1;
- t->time.tm_year = -1;
- t->time.tm_wday = -1;
- t->time.tm_yday = -1;
- t->time.tm_isdst = -1;
/* ... and status */
t->enabled = !!(ds1307->regs[7] & DS1337_BIT_A1IE);
@@ -602,6 +597,8 @@ static const struct rtc_class_ops ds13xx_rtc_ops = {
* Alarm support for mcp794xx devices.
*/
+#define MCP794XX_REG_WEEKDAY 0x3
+#define MCP794XX_REG_WEEKDAY_WDAY_MASK 0x7
#define MCP794XX_REG_CONTROL 0x07
# define MCP794XX_BIT_ALM0_EN 0x10
# define MCP794XX_BIT_ALM1_EN 0x20
@@ -1231,13 +1228,16 @@ static int ds1307_probe(struct i2c_client *client,
{
struct ds1307 *ds1307;
int err = -ENODEV;
- int tmp;
+ int tmp, wday;
struct chip_desc *chip = &chips[id->driver_data];
struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
bool want_irq = false;
bool ds1307_can_wakeup_device = false;
unsigned char *buf;
struct ds1307_platform_data *pdata = dev_get_platdata(&client->dev);
+ struct rtc_time tm;
+ unsigned long timestamp;
+
irq_handler_t irq_handler = ds1307_irq;
static const int bbsqi_bitpos[] = {
@@ -1526,6 +1526,27 @@ read_rtc:
bin2bcd(tmp));
}
+ /*
+ * Some IPs have weekday reset value = 0x1 which might not correct
+ * hence compute the wday using the current date/month/year values
+ */
+ ds1307_get_time(&client->dev, &tm);
+ wday = tm.tm_wday;
+ timestamp = rtc_tm_to_time64(&tm);
+ rtc_time64_to_tm(timestamp, &tm);
+
+ /*
+ * Check if reset wday is different from the computed wday
+ * If different then set the wday which we computed using
+ * timestamp
+ */
+ if (wday != tm.tm_wday) {
+ wday = i2c_smbus_read_byte_data(client, MCP794XX_REG_WEEKDAY);
+ wday = wday & ~MCP794XX_REG_WEEKDAY_WDAY_MASK;
+ wday = wday | (tm.tm_wday + 1);
+ i2c_smbus_write_byte_data(client, MCP794XX_REG_WEEKDAY, wday);
+ }
+
if (want_irq) {
device_set_wakeup_capable(&client->dev, true);
set_bit(HAS_ALARM, &ds1307->flags);
diff --git a/drivers/rtc/rtc-ds1343.c b/drivers/rtc/rtc-ds1343.c
index 23fa9f0cb5e3..895fbeeb47fe 100644
--- a/drivers/rtc/rtc-ds1343.c
+++ b/drivers/rtc/rtc-ds1343.c
@@ -504,12 +504,6 @@ static int ds1343_read_alarm(struct device *dev, struct rtc_wkalrm *alarm)
alarm->time.tm_hour = priv->alarm_hour < 0 ? 0 : priv->alarm_hour;
alarm->time.tm_mday = priv->alarm_mday < 0 ? 0 : priv->alarm_mday;
- alarm->time.tm_mon = -1;
- alarm->time.tm_year = -1;
- alarm->time.tm_wday = -1;
- alarm->time.tm_yday = -1;
- alarm->time.tm_isdst = -1;
-
out:
mutex_unlock(&priv->mutex);
return res;
diff --git a/drivers/rtc/rtc-ds1685.c b/drivers/rtc/rtc-ds1685.c
index b3ce3c652fcd..ed43b4311660 100644
--- a/drivers/rtc/rtc-ds1685.c
+++ b/drivers/rtc/rtc-ds1685.c
@@ -103,6 +103,26 @@ ds1685_rtc_bin2bcd(struct ds1685_priv *rtc, u8 val, u8 bin_mask, u8 bcd_mask)
}
/**
+ * s1685_rtc_check_mday - check validity of the day of month.
+ * @rtc: pointer to the ds1685 rtc structure.
+ * @mday: day of month.
+ *
+ * Returns -EDOM if the day of month is not within 1..31 range.
+ */
+static inline int
+ds1685_rtc_check_mday(struct ds1685_priv *rtc, u8 mday)
+{
+ if (rtc->bcd_mode) {
+ if (mday < 0x01 || mday > 0x31 || (mday & 0x0f) > 0x09)
+ return -EDOM;
+ } else {
+ if (mday < 1 || mday > 31)
+ return -EDOM;
+ }
+ return 0;
+}
+
+/**
* ds1685_rtc_switch_to_bank0 - switch the rtc to bank 0.
* @rtc: pointer to the ds1685 rtc structure.
*/
@@ -377,6 +397,7 @@ ds1685_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
struct platform_device *pdev = to_platform_device(dev);
struct ds1685_priv *rtc = platform_get_drvdata(pdev);
u8 seconds, minutes, hours, mday, ctrlb, ctrlc;
+ int ret;
/* Fetch the alarm info from the RTC alarm registers. */
ds1685_rtc_begin_data_access(rtc);
@@ -388,34 +409,29 @@ ds1685_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
ctrlc = rtc->read(rtc, RTC_CTRL_C);
ds1685_rtc_end_data_access(rtc);
- /* Check month date. */
- if (!(mday >= 1) && (mday <= 31))
- return -EDOM;
+ /* Check the month date for validity. */
+ ret = ds1685_rtc_check_mday(rtc, mday);
+ if (ret)
+ return ret;
/*
* Check the three alarm bytes.
*
* The Linux RTC system doesn't support the "don't care" capability
* of this RTC chip. We check for it anyways in case support is
- * added in the future.
+ * added in the future and only assign when we care.
*/
- if (unlikely(seconds >= 0xc0))
- alrm->time.tm_sec = -1;
- else
+ if (likely(seconds < 0xc0))
alrm->time.tm_sec = ds1685_rtc_bcd2bin(rtc, seconds,
RTC_SECS_BCD_MASK,
RTC_SECS_BIN_MASK);
- if (unlikely(minutes >= 0xc0))
- alrm->time.tm_min = -1;
- else
+ if (likely(minutes < 0xc0))
alrm->time.tm_min = ds1685_rtc_bcd2bin(rtc, minutes,
RTC_MINS_BCD_MASK,
RTC_MINS_BIN_MASK);
- if (unlikely(hours >= 0xc0))
- alrm->time.tm_hour = -1;
- else
+ if (likely(hours < 0xc0))
alrm->time.tm_hour = ds1685_rtc_bcd2bin(rtc, hours,
RTC_HRS_24_BCD_MASK,
RTC_HRS_24_BIN_MASK);
@@ -423,11 +439,6 @@ ds1685_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
/* Write the data to rtc_wkalrm. */
alrm->time.tm_mday = ds1685_rtc_bcd2bin(rtc, mday, RTC_MDAY_BCD_MASK,
RTC_MDAY_BIN_MASK);
- alrm->time.tm_mon = -1;
- alrm->time.tm_year = -1;
- alrm->time.tm_wday = -1;
- alrm->time.tm_yday = -1;
- alrm->time.tm_isdst = -1;
alrm->enabled = !!(ctrlb & RTC_CTRL_B_AIE);
alrm->pending = !!(ctrlc & RTC_CTRL_C_AF);
@@ -445,6 +456,7 @@ ds1685_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
struct platform_device *pdev = to_platform_device(dev);
struct ds1685_priv *rtc = platform_get_drvdata(pdev);
u8 ctrlb, seconds, minutes, hours, mday;
+ int ret;
/* Fetch the alarm info and convert to BCD. */
seconds = ds1685_rtc_bin2bcd(rtc, alrm->time.tm_sec,
@@ -461,8 +473,9 @@ ds1685_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
RTC_MDAY_BCD_MASK);
/* Check the month date for validity. */
- if (!(mday >= 1) && (mday <= 31))
- return -EDOM;
+ ret = ds1685_rtc_check_mday(rtc, mday);
+ if (ret)
+ return ret;
/*
* Check the three alarm bytes.
diff --git a/drivers/rtc/rtc-ds2404.c b/drivers/rtc/rtc-ds2404.c
index 16310fe79d76..9a1582ed7070 100644
--- a/drivers/rtc/rtc-ds2404.c
+++ b/drivers/rtc/rtc-ds2404.c
@@ -13,7 +13,7 @@
#include <linux/rtc.h>
#include <linux/types.h>
#include <linux/bcd.h>
-#include <linux/rtc-ds2404.h>
+#include <linux/platform_data/rtc-ds2404.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/slab.h>
diff --git a/drivers/rtc/rtc-ds3232.c b/drivers/rtc/rtc-ds3232.c
index 04fbd7fffd0d..b1f20d8c358f 100644
--- a/drivers/rtc/rtc-ds3232.c
+++ b/drivers/rtc/rtc-ds3232.c
@@ -197,12 +197,6 @@ static int ds3232_read_alarm(struct device *dev, struct rtc_wkalrm *alarm)
alarm->time.tm_hour = bcd2bin(buf[2] & 0x7F);
alarm->time.tm_mday = bcd2bin(buf[3] & 0x7F);
- alarm->time.tm_mon = -1;
- alarm->time.tm_year = -1;
- alarm->time.tm_wday = -1;
- alarm->time.tm_yday = -1;
- alarm->time.tm_isdst = -1;
-
alarm->enabled = !!(control & DS3232_REG_CR_A1IE);
alarm->pending = !!(stat & DS3232_REG_SR_A1F);
diff --git a/drivers/rtc/rtc-efi.c b/drivers/rtc/rtc-efi.c
index 96d38609d803..0130afd7fe88 100644
--- a/drivers/rtc/rtc-efi.c
+++ b/drivers/rtc/rtc-efi.c
@@ -259,6 +259,12 @@ static const struct rtc_class_ops efi_rtc_ops = {
static int __init efi_rtc_probe(struct platform_device *dev)
{
struct rtc_device *rtc;
+ efi_time_t eft;
+ efi_time_cap_t cap;
+
+ /* First check if the RTC is usable */
+ if (efi.get_time(&eft, &cap) != EFI_SUCCESS)
+ return -ENODEV;
rtc = devm_rtc_device_register(&dev->dev, "rtc-efi", &efi_rtc_ops,
THIS_MODULE);
diff --git a/drivers/rtc/rtc-generic.c b/drivers/rtc/rtc-generic.c
index d726c6aa96a8..1bf5d2347928 100644
--- a/drivers/rtc/rtc-generic.c
+++ b/drivers/rtc/rtc-generic.c
@@ -9,44 +9,10 @@
#include <linux/platform_device.h>
#include <linux/rtc.h>
-#if defined(CONFIG_M68K) || defined(CONFIG_PARISC) || \
- defined(CONFIG_PPC) || defined(CONFIG_SUPERH32)
-#include <asm/rtc.h>
-
-static int generic_get_time(struct device *dev, struct rtc_time *tm)
-{
- unsigned int ret = get_rtc_time(tm);
-
- if (ret & RTC_BATT_BAD)
- return -EOPNOTSUPP;
-
- return rtc_valid_tm(tm);
-}
-
-static int generic_set_time(struct device *dev, struct rtc_time *tm)
-{
- if (set_rtc_time(tm) < 0)
- return -EOPNOTSUPP;
-
- return 0;
-}
-
-static const struct rtc_class_ops generic_rtc_ops = {
- .read_time = generic_get_time,
- .set_time = generic_set_time,
-};
-#else
-#define generic_rtc_ops *(struct rtc_class_ops*)NULL
-#endif
-
static int __init generic_rtc_probe(struct platform_device *dev)
{
struct rtc_device *rtc;
- const struct rtc_class_ops *ops;
-
- ops = dev_get_platdata(&dev->dev);
- if (!ops)
- ops = &generic_rtc_ops;
+ const struct rtc_class_ops *ops = dev_get_platdata(&dev->dev);
rtc = devm_rtc_device_register(&dev->dev, "rtc-generic",
ops, THIS_MODULE);
diff --git a/drivers/rtc/rtc-hym8563.c b/drivers/rtc/rtc-hym8563.c
index 207270376b55..e5ad527cb75e 100644
--- a/drivers/rtc/rtc-hym8563.c
+++ b/drivers/rtc/rtc-hym8563.c
@@ -198,7 +198,7 @@ static int hym8563_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alm)
return ret;
/* The alarm only has a minute accuracy */
- alm_tm->tm_sec = -1;
+ alm_tm->tm_sec = 0;
alm_tm->tm_min = (buf[0] & HYM8563_ALM_BIT_DISABLE) ?
-1 :
@@ -213,9 +213,6 @@ static int hym8563_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alm)
-1 :
bcd2bin(buf[3] & HYM8563_WEEKDAY_MASK);
- alm_tm->tm_mon = -1;
- alm_tm->tm_year = -1;
-
ret = i2c_smbus_read_byte_data(client, HYM8563_CTL2);
if (ret < 0)
return ret;
diff --git a/drivers/rtc/rtc-isl12057.c b/drivers/rtc/rtc-isl12057.c
index 54328d4ac0d3..0e7f0f52bfe4 100644
--- a/drivers/rtc/rtc-isl12057.c
+++ b/drivers/rtc/rtc-isl12057.c
@@ -245,8 +245,7 @@ static int isl12057_rtc_update_alarm(struct device *dev, int enable)
static int isl12057_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alarm)
{
struct isl12057_rtc_data *data = dev_get_drvdata(dev);
- struct rtc_time rtc_tm, *alarm_tm = &alarm->time;
- unsigned long rtc_secs, alarm_secs;
+ struct rtc_time *alarm_tm = &alarm->time;
u8 regs[ISL12057_A1_SEC_LEN];
unsigned int ir;
int ret;
@@ -264,36 +263,6 @@ static int isl12057_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alarm)
alarm_tm->tm_min = bcd2bin(regs[1] & 0x7f);
alarm_tm->tm_hour = bcd2bin(regs[2] & 0x3f);
alarm_tm->tm_mday = bcd2bin(regs[3] & 0x3f);
- alarm_tm->tm_wday = -1;
-
- /*
- * The alarm section does not store year/month. We use the ones in rtc
- * section as a basis and increment month and then year if needed to get
- * alarm after current time.
- */
- ret = _isl12057_rtc_read_time(dev, &rtc_tm);
- if (ret)
- goto err_unlock;
-
- alarm_tm->tm_year = rtc_tm.tm_year;
- alarm_tm->tm_mon = rtc_tm.tm_mon;
-
- ret = rtc_tm_to_time(&rtc_tm, &rtc_secs);
- if (ret)
- goto err_unlock;
-
- ret = rtc_tm_to_time(alarm_tm, &alarm_secs);
- if (ret)
- goto err_unlock;
-
- if (alarm_secs < rtc_secs) {
- if (alarm_tm->tm_mon == 11) {
- alarm_tm->tm_mon = 0;
- alarm_tm->tm_year += 1;
- } else {
- alarm_tm->tm_mon += 1;
- }
- }
ret = regmap_read(data->regmap, ISL12057_REG_INT, &ir);
if (ret) {
diff --git a/drivers/rtc/rtc-m41t80.c b/drivers/rtc/rtc-m41t80.c
index d1bf93a87200..58698d21c2c3 100644
--- a/drivers/rtc/rtc-m41t80.c
+++ b/drivers/rtc/rtc-m41t80.c
@@ -244,7 +244,7 @@ static int m41t80_alarm_irq_enable(struct device *dev, unsigned int enabled)
retval = i2c_smbus_write_byte_data(client, M41T80_REG_ALARM_MON, flags);
if (retval < 0) {
- dev_info(dev, "Unable to enable alarm IRQ %d\n", retval);
+ dev_err(dev, "Unable to enable alarm IRQ %d\n", retval);
return retval;
}
return 0;
@@ -320,10 +320,8 @@ static int m41t80_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
alrm->time.tm_sec = bcd2bin(alarmvals[4] & 0x7f);
alrm->time.tm_min = bcd2bin(alarmvals[3] & 0x7f);
alrm->time.tm_hour = bcd2bin(alarmvals[2] & 0x3f);
- alrm->time.tm_wday = -1;
alrm->time.tm_mday = bcd2bin(alarmvals[1] & 0x3f);
alrm->time.tm_mon = bcd2bin(alarmvals[0] & 0x3f);
- alrm->time.tm_year = -1;
alrm->enabled = !!(alarmvals[0] & M41T80_ALMON_AFE);
alrm->pending = (flags & M41T80_FLAGS_AF) && alrm->enabled;
@@ -337,6 +335,30 @@ static struct rtc_class_ops m41t80_rtc_ops = {
.proc = m41t80_rtc_proc,
};
+#ifdef CONFIG_PM_SLEEP
+static int m41t80_suspend(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+
+ if (client->irq >= 0 && device_may_wakeup(dev))
+ enable_irq_wake(client->irq);
+
+ return 0;
+}
+
+static int m41t80_resume(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+
+ if (client->irq >= 0 && device_may_wakeup(dev))
+ disable_irq_wake(client->irq);
+
+ return 0;
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(m41t80_pm, m41t80_suspend, m41t80_resume);
+
static ssize_t flags_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
@@ -831,10 +853,9 @@ static int m41t80_probe(struct i2c_client *client,
return rc;
}
- rc = devm_add_action(&client->dev, m41t80_remove_sysfs_group,
- &client->dev);
+ rc = devm_add_action_or_reset(&client->dev, m41t80_remove_sysfs_group,
+ &client->dev);
if (rc) {
- m41t80_remove_sysfs_group(&client->dev);
dev_err(&client->dev,
"Failed to add sysfs cleanup action: %d\n", rc);
return rc;
@@ -873,6 +894,7 @@ static int m41t80_remove(struct i2c_client *client)
static struct i2c_driver m41t80_driver = {
.driver = {
.name = "rtc-m41t80",
+ .pm = &m41t80_pm,
},
.probe = m41t80_probe,
.remove = m41t80_remove,
diff --git a/drivers/rtc/rtc-m48t86.c b/drivers/rtc/rtc-m48t86.c
index f72b91f2501f..0eeb5714c00f 100644
--- a/drivers/rtc/rtc-m48t86.c
+++ b/drivers/rtc/rtc-m48t86.c
@@ -16,7 +16,7 @@
#include <linux/module.h>
#include <linux/rtc.h>
#include <linux/platform_device.h>
-#include <linux/m48t86.h>
+#include <linux/platform_data/rtc-m48t86.h>
#include <linux/bcd.h>
#define M48T86_REG_SEC 0x00
diff --git a/drivers/rtc/rtc-max6916.c b/drivers/rtc/rtc-max6916.c
new file mode 100644
index 000000000000..623ab27b2757
--- /dev/null
+++ b/drivers/rtc/rtc-max6916.c
@@ -0,0 +1,164 @@
+/* rtc-max6916.c
+ *
+ * Driver for MAXIM max6916 Low Current, SPI Compatible
+ * Real Time Clock
+ *
+ * Author : Venkat Prashanth B U <venkat.prashanth2498@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/platform_device.h>
+#include <linux/rtc.h>
+#include <linux/spi/spi.h>
+#include <linux/bcd.h>
+
+/* Registers in max6916 rtc */
+
+#define MAX6916_SECONDS_REG 0x01
+#define MAX6916_MINUTES_REG 0x02
+#define MAX6916_HOURS_REG 0x03
+#define MAX6916_DATE_REG 0x04
+#define MAX6916_MONTH_REG 0x05
+#define MAX6916_DAY_REG 0x06
+#define MAX6916_YEAR_REG 0x07
+#define MAX6916_CONTROL_REG 0x08
+#define MAX6916_STATUS_REG 0x0C
+#define MAX6916_CLOCK_BURST 0x3F
+
+static int max6916_read_reg(struct device *dev, unsigned char address,
+ unsigned char *data)
+{
+ struct spi_device *spi = to_spi_device(dev);
+
+ *data = address | 0x80;
+
+ return spi_write_then_read(spi, data, 1, data, 1);
+}
+
+static int max6916_write_reg(struct device *dev, unsigned char address,
+ unsigned char data)
+{
+ struct spi_device *spi = to_spi_device(dev);
+ unsigned char buf[2];
+
+ buf[0] = address & 0x7F;
+ buf[1] = data;
+
+ return spi_write_then_read(spi, buf, 2, NULL, 0);
+}
+
+static int max6916_read_time(struct device *dev, struct rtc_time *dt)
+{
+ struct spi_device *spi = to_spi_device(dev);
+ int err;
+ unsigned char buf[8];
+
+ buf[0] = MAX6916_CLOCK_BURST | 0x80;
+
+ err = spi_write_then_read(spi, buf, 1, buf, 8);
+
+ if (err)
+ return err;
+
+ dt->tm_sec = bcd2bin(buf[0]);
+ dt->tm_min = bcd2bin(buf[1]);
+ dt->tm_hour = bcd2bin(buf[2] & 0x3F);
+ dt->tm_mday = bcd2bin(buf[3]);
+ dt->tm_mon = bcd2bin(buf[4]) - 1;
+ dt->tm_wday = bcd2bin(buf[5]) - 1;
+ dt->tm_year = bcd2bin(buf[6]) + 100;
+
+ return rtc_valid_tm(dt);
+}
+
+static int max6916_set_time(struct device *dev, struct rtc_time *dt)
+{
+ struct spi_device *spi = to_spi_device(dev);
+ unsigned char buf[9];
+
+ if (dt->tm_year < 100 || dt->tm_year > 199) {
+ dev_err(&spi->dev, "Year must be between 2000 and 2099. It's %d.\n",
+ dt->tm_year + 1900);
+ return -EINVAL;
+ }
+
+ buf[0] = MAX6916_CLOCK_BURST & 0x7F;
+ buf[1] = bin2bcd(dt->tm_sec);
+ buf[2] = bin2bcd(dt->tm_min);
+ buf[3] = (bin2bcd(dt->tm_hour) & 0X3F);
+ buf[4] = bin2bcd(dt->tm_mday);
+ buf[5] = bin2bcd(dt->tm_mon + 1);
+ buf[6] = bin2bcd(dt->tm_wday + 1);
+ buf[7] = bin2bcd(dt->tm_year % 100);
+ buf[8] = bin2bcd(0x00);
+
+ /* write the rtc settings */
+ return spi_write_then_read(spi, buf, 9, NULL, 0);
+}
+
+static const struct rtc_class_ops max6916_rtc_ops = {
+ .read_time = max6916_read_time,
+ .set_time = max6916_set_time,
+};
+
+static int max6916_probe(struct spi_device *spi)
+{
+ struct rtc_device *rtc;
+ unsigned char data;
+ int res;
+
+ /* spi setup with max6916 in mode 3 and bits per word as 8 */
+ spi->mode = SPI_MODE_3;
+ spi->bits_per_word = 8;
+ spi_setup(spi);
+
+ /* RTC Settings */
+ res = max6916_read_reg(&spi->dev, MAX6916_SECONDS_REG, &data);
+ if (res)
+ return res;
+
+ /* Disable the write protect of rtc */
+ max6916_read_reg(&spi->dev, MAX6916_CONTROL_REG, &data);
+ data = data & ~(1 << 7);
+ max6916_write_reg(&spi->dev, MAX6916_CONTROL_REG, data);
+
+ /*Enable oscillator,disable oscillator stop flag, glitch filter*/
+ max6916_read_reg(&spi->dev, MAX6916_STATUS_REG, &data);
+ data = data & 0x1B;
+ max6916_write_reg(&spi->dev, MAX6916_STATUS_REG, data);
+
+ /* display the settings */
+ max6916_read_reg(&spi->dev, MAX6916_CONTROL_REG, &data);
+ dev_info(&spi->dev, "MAX6916 RTC CTRL Reg = 0x%02x\n", data);
+
+ max6916_read_reg(&spi->dev, MAX6916_STATUS_REG, &data);
+ dev_info(&spi->dev, "MAX6916 RTC Status Reg = 0x%02x\n", data);
+
+ rtc = devm_rtc_device_register(&spi->dev, "max6916",
+ &max6916_rtc_ops, THIS_MODULE);
+ if (IS_ERR(rtc))
+ return PTR_ERR(rtc);
+
+ spi_set_drvdata(spi, rtc);
+
+ return 0;
+}
+
+static struct spi_driver max6916_driver = {
+ .driver = {
+ .name = "max6916",
+ },
+ .probe = max6916_probe,
+};
+module_spi_driver(max6916_driver);
+
+MODULE_DESCRIPTION("MAX6916 SPI RTC DRIVER");
+MODULE_AUTHOR("Venkat Prashanth B U <venkat.prashanth2498@gmail.com>");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/rtc/rtc-mc146818-lib.c b/drivers/rtc/rtc-mc146818-lib.c
new file mode 100644
index 000000000000..2f1772a358ca
--- /dev/null
+++ b/drivers/rtc/rtc-mc146818-lib.c
@@ -0,0 +1,198 @@
+#include <linux/bcd.h>
+#include <linux/delay.h>
+#include <linux/export.h>
+#include <linux/mc146818rtc.h>
+
+#ifdef CONFIG_ACPI
+#include <linux/acpi.h>
+#endif
+
+/*
+ * Returns true if a clock update is in progress
+ */
+static inline unsigned char mc146818_is_updating(void)
+{
+ unsigned char uip;
+ unsigned long flags;
+
+ spin_lock_irqsave(&rtc_lock, flags);
+ uip = (CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP);
+ spin_unlock_irqrestore(&rtc_lock, flags);
+ return uip;
+}
+
+unsigned int mc146818_get_time(struct rtc_time *time)
+{
+ unsigned char ctrl;
+ unsigned long flags;
+ unsigned char century = 0;
+
+#ifdef CONFIG_MACH_DECSTATION
+ unsigned int real_year;
+#endif
+
+ /*
+ * read RTC once any update in progress is done. The update
+ * can take just over 2ms. We wait 20ms. There is no need to
+ * to poll-wait (up to 1s - eeccch) for the falling edge of RTC_UIP.
+ * If you need to know *exactly* when a second has started, enable
+ * periodic update complete interrupts, (via ioctl) and then
+ * immediately read /dev/rtc which will block until you get the IRQ.
+ * Once the read clears, read the RTC time (again via ioctl). Easy.
+ */
+ if (mc146818_is_updating())
+ mdelay(20);
+
+ /*
+ * Only the values that we read from the RTC are set. We leave
+ * tm_wday, tm_yday and tm_isdst untouched. Even though the
+ * RTC has RTC_DAY_OF_WEEK, we ignore it, as it is only updated
+ * by the RTC when initially set to a non-zero value.
+ */
+ spin_lock_irqsave(&rtc_lock, flags);
+ time->tm_sec = CMOS_READ(RTC_SECONDS);
+ time->tm_min = CMOS_READ(RTC_MINUTES);
+ time->tm_hour = CMOS_READ(RTC_HOURS);
+ time->tm_mday = CMOS_READ(RTC_DAY_OF_MONTH);
+ time->tm_mon = CMOS_READ(RTC_MONTH);
+ time->tm_year = CMOS_READ(RTC_YEAR);
+#ifdef CONFIG_MACH_DECSTATION
+ real_year = CMOS_READ(RTC_DEC_YEAR);
+#endif
+#ifdef CONFIG_ACPI
+ if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID &&
+ acpi_gbl_FADT.century)
+ century = CMOS_READ(acpi_gbl_FADT.century);
+#endif
+ ctrl = CMOS_READ(RTC_CONTROL);
+ spin_unlock_irqrestore(&rtc_lock, flags);
+
+ if (!(ctrl & RTC_DM_BINARY) || RTC_ALWAYS_BCD)
+ {
+ time->tm_sec = bcd2bin(time->tm_sec);
+ time->tm_min = bcd2bin(time->tm_min);
+ time->tm_hour = bcd2bin(time->tm_hour);
+ time->tm_mday = bcd2bin(time->tm_mday);
+ time->tm_mon = bcd2bin(time->tm_mon);
+ time->tm_year = bcd2bin(time->tm_year);
+ century = bcd2bin(century);
+ }
+
+#ifdef CONFIG_MACH_DECSTATION
+ time->tm_year += real_year - 72;
+#endif
+
+ if (century)
+ time->tm_year += (century - 19) * 100;
+
+ /*
+ * Account for differences between how the RTC uses the values
+ * and how they are defined in a struct rtc_time;
+ */
+ if (time->tm_year <= 69)
+ time->tm_year += 100;
+
+ time->tm_mon--;
+
+ return RTC_24H;
+}
+EXPORT_SYMBOL_GPL(mc146818_get_time);
+
+/* Set the current date and time in the real time clock. */
+int mc146818_set_time(struct rtc_time *time)
+{
+ unsigned long flags;
+ unsigned char mon, day, hrs, min, sec;
+ unsigned char save_control, save_freq_select;
+ unsigned int yrs;
+#ifdef CONFIG_MACH_DECSTATION
+ unsigned int real_yrs, leap_yr;
+#endif
+ unsigned char century = 0;
+
+ yrs = time->tm_year;
+ mon = time->tm_mon + 1; /* tm_mon starts at zero */
+ day = time->tm_mday;
+ hrs = time->tm_hour;
+ min = time->tm_min;
+ sec = time->tm_sec;
+
+ if (yrs > 255) /* They are unsigned */
+ return -EINVAL;
+
+ spin_lock_irqsave(&rtc_lock, flags);
+#ifdef CONFIG_MACH_DECSTATION
+ real_yrs = yrs;
+ leap_yr = ((!((yrs + 1900) % 4) && ((yrs + 1900) % 100)) ||
+ !((yrs + 1900) % 400));
+ yrs = 72;
+
+ /*
+ * We want to keep the year set to 73 until March
+ * for non-leap years, so that Feb, 29th is handled
+ * correctly.
+ */
+ if (!leap_yr && mon < 3) {
+ real_yrs--;
+ yrs = 73;
+ }
+#endif
+
+#ifdef CONFIG_ACPI
+ if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID &&
+ acpi_gbl_FADT.century) {
+ century = (yrs + 1900) / 100;
+ yrs %= 100;
+ }
+#endif
+
+ /* These limits and adjustments are independent of
+ * whether the chip is in binary mode or not.
+ */
+ if (yrs > 169) {
+ spin_unlock_irqrestore(&rtc_lock, flags);
+ return -EINVAL;
+ }
+
+ if (yrs >= 100)
+ yrs -= 100;
+
+ if (!(CMOS_READ(RTC_CONTROL) & RTC_DM_BINARY)
+ || RTC_ALWAYS_BCD) {
+ sec = bin2bcd(sec);
+ min = bin2bcd(min);
+ hrs = bin2bcd(hrs);
+ day = bin2bcd(day);
+ mon = bin2bcd(mon);
+ yrs = bin2bcd(yrs);
+ century = bin2bcd(century);
+ }
+
+ save_control = CMOS_READ(RTC_CONTROL);
+ CMOS_WRITE((save_control|RTC_SET), RTC_CONTROL);
+ save_freq_select = CMOS_READ(RTC_FREQ_SELECT);
+ CMOS_WRITE((save_freq_select|RTC_DIV_RESET2), RTC_FREQ_SELECT);
+
+#ifdef CONFIG_MACH_DECSTATION
+ CMOS_WRITE(real_yrs, RTC_DEC_YEAR);
+#endif
+ CMOS_WRITE(yrs, RTC_YEAR);
+ CMOS_WRITE(mon, RTC_MONTH);
+ CMOS_WRITE(day, RTC_DAY_OF_MONTH);
+ CMOS_WRITE(hrs, RTC_HOURS);
+ CMOS_WRITE(min, RTC_MINUTES);
+ CMOS_WRITE(sec, RTC_SECONDS);
+#ifdef CONFIG_ACPI
+ if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID &&
+ acpi_gbl_FADT.century)
+ CMOS_WRITE(century, acpi_gbl_FADT.century);
+#endif
+
+ CMOS_WRITE(save_control, RTC_CONTROL);
+ CMOS_WRITE(save_freq_select, RTC_FREQ_SELECT);
+
+ spin_unlock_irqrestore(&rtc_lock, flags);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(mc146818_set_time);
diff --git a/drivers/rtc/rtc-mrst.c b/drivers/rtc/rtc-mrst.c
index 0094d9bdd1e6..7334c44fa7c3 100644
--- a/drivers/rtc/rtc-mrst.c
+++ b/drivers/rtc/rtc-mrst.c
@@ -32,11 +32,11 @@
#include <linux/interrupt.h>
#include <linux/spinlock.h>
#include <linux/kernel.h>
+#include <linux/mc146818rtc.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/sfi.h>
-#include <asm-generic/rtc.h>
#include <asm/intel_scu_ipc.h>
#include <asm/intel-mid.h>
#include <asm/intel_mid_vrtc.h>
@@ -149,14 +149,6 @@ static int mrst_read_alarm(struct device *dev, struct rtc_wkalrm *t)
if (mrst->irq <= 0)
return -EIO;
- /* Basic alarms only support hour, minute, and seconds fields.
- * Some also support day and month, for alarms up to a year in
- * the future.
- */
- t->time.tm_mday = -1;
- t->time.tm_mon = -1;
- t->time.tm_year = -1;
-
/* vRTC only supports binary mode */
spin_lock_irq(&rtc_lock);
t->time.tm_sec = vrtc_cmos_read(RTC_SECONDS_ALARM);
diff --git a/drivers/rtc/rtc-pcf2123.c b/drivers/rtc/rtc-pcf2123.c
index f22e060709e5..b4478cc92b55 100644
--- a/drivers/rtc/rtc-pcf2123.c
+++ b/drivers/rtc/rtc-pcf2123.c
@@ -96,7 +96,7 @@
#define CD_TMR_TE BIT(3) /* Countdown timer enable */
/* PCF2123_REG_OFFSET BITS */
-#define OFFSET_SIGN_BIT BIT(6) /* 2's complement sign bit */
+#define OFFSET_SIGN_BIT 6 /* 2's complement sign bit */
#define OFFSET_COARSE BIT(7) /* Coarse mode offset */
#define OFFSET_STEP (2170) /* Offset step in parts per billion */
@@ -217,7 +217,7 @@ static int pcf2123_read_offset(struct device *dev, long *offset)
if (reg & OFFSET_COARSE)
reg <<= 1; /* multiply by 2 and sign extend */
else
- reg |= (reg & OFFSET_SIGN_BIT) << 1; /* sign extend only */
+ reg = sign_extend32(reg, OFFSET_SIGN_BIT);
*offset = ((long)reg) * OFFSET_STEP;
diff --git a/drivers/rtc/rtc-pcf85063.c b/drivers/rtc/rtc-pcf85063.c
index e8ddbb359d11..efb0a08ac117 100644
--- a/drivers/rtc/rtc-pcf85063.c
+++ b/drivers/rtc/rtc-pcf85063.c
@@ -16,6 +16,16 @@
#include <linux/rtc.h>
#include <linux/module.h>
+/*
+ * Information for this driver was pulled from the following datasheets.
+ *
+ * http://www.nxp.com/documents/data_sheet/PCF85063A.pdf
+ * http://www.nxp.com/documents/data_sheet/PCF85063TP.pdf
+ *
+ * PCF85063A -- Rev. 6 — 18 November 2015
+ * PCF85063TP -- Rev. 4 — 6 May 2015
+*/
+
#define PCF85063_REG_CTRL1 0x00 /* status */
#define PCF85063_REG_CTRL1_STOP BIT(5)
#define PCF85063_REG_CTRL2 0x01
@@ -55,10 +65,22 @@ static int pcf85063_stop_clock(struct i2c_client *client, u8 *ctrl1)
return 0;
}
-/*
- * In the routines that deal directly with the pcf85063 hardware, we use
- * rtc_time -- month 0-11, hour 0-23, yr = calendar year-epoch.
- */
+static int pcf85063_start_clock(struct i2c_client *client, u8 ctrl1)
+{
+ s32 ret;
+
+ /* start the clock */
+ ctrl1 &= PCF85063_REG_CTRL1_STOP;
+
+ ret = i2c_smbus_write_byte_data(client, PCF85063_REG_CTRL1, ctrl1);
+ if (ret < 0) {
+ dev_err(&client->dev, "Failing to start the clock\n");
+ return -EIO;
+ }
+
+ return 0;
+}
+
static int pcf85063_get_datetime(struct i2c_client *client, struct rtc_time *tm)
{
int rc;
@@ -90,8 +112,7 @@ static int pcf85063_get_datetime(struct i2c_client *client, struct rtc_time *tm)
tm->tm_wday = regs[4] & 0x07;
tm->tm_mon = bcd2bin(regs[5] & 0x1F) - 1; /* rtc mn 1-12 */
tm->tm_year = bcd2bin(regs[6]);
- if (tm->tm_year < 70)
- tm->tm_year += 100; /* assume we are in 1970...2069 */
+ tm->tm_year += 100;
return rtc_valid_tm(tm);
}
@@ -99,13 +120,17 @@ static int pcf85063_get_datetime(struct i2c_client *client, struct rtc_time *tm)
static int pcf85063_set_datetime(struct i2c_client *client, struct rtc_time *tm)
{
int rc;
- u8 regs[8];
+ u8 regs[7];
+ u8 ctrl1;
+
+ if ((tm->tm_year < 100) || (tm->tm_year > 199))
+ return -EINVAL;
/*
* to accurately set the time, reset the divider chain and keep it in
* reset state until all time/date registers are written
*/
- rc = pcf85063_stop_clock(client, &regs[7]);
+ rc = pcf85063_stop_clock(client, &ctrl1);
if (rc != 0)
return rc;
@@ -125,14 +150,7 @@ static int pcf85063_set_datetime(struct i2c_client *client, struct rtc_time *tm)
regs[5] = bin2bcd(tm->tm_mon + 1);
/* year and century */
- regs[6] = bin2bcd(tm->tm_year % 100);
-
- /*
- * after all time/date registers are written, let the 'address auto
- * increment' feature wrap around and write register CTRL1 to re-enable
- * the clock divider chain again
- */
- regs[7] &= ~PCF85063_REG_CTRL1_STOP;
+ regs[6] = bin2bcd(tm->tm_year - 100);
/* write all registers at once */
rc = i2c_smbus_write_i2c_block_data(client, PCF85063_REG_SC,
@@ -142,6 +160,15 @@ static int pcf85063_set_datetime(struct i2c_client *client, struct rtc_time *tm)
return rc;
}
+ /*
+ * Write the control register as a separate action since the size of
+ * the register space is different between the PCF85063TP and
+ * PCF85063A devices. The rollover point can not be used.
+ */
+ rc = pcf85063_start_clock(client, ctrl1);
+ if (rc != 0)
+ return rc;
+
return 0;
}
diff --git a/drivers/rtc/rtc-pcf8563.c b/drivers/rtc/rtc-pcf8563.c
index b9ddbb001283..1227ceab61ee 100644
--- a/drivers/rtc/rtc-pcf8563.c
+++ b/drivers/rtc/rtc-pcf8563.c
@@ -341,14 +341,11 @@ static int pcf8563_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *tm)
"%s: raw data is min=%02x, hr=%02x, mday=%02x, wday=%02x\n",
__func__, buf[0], buf[1], buf[2], buf[3]);
+ tm->time.tm_sec = 0;
tm->time.tm_min = bcd2bin(buf[0] & 0x7F);
tm->time.tm_hour = bcd2bin(buf[1] & 0x3F);
tm->time.tm_mday = bcd2bin(buf[2] & 0x3F);
tm->time.tm_wday = bcd2bin(buf[3] & 0x7);
- tm->time.tm_mon = -1;
- tm->time.tm_year = -1;
- tm->time.tm_yday = -1;
- tm->time.tm_isdst = -1;
err = pcf8563_get_alarm_mode(client, &tm->enabled, &tm->pending);
if (err < 0)
diff --git a/drivers/rtc/rtc-rc5t583.c b/drivers/rtc/rtc-rc5t583.c
index f28d57788951..68ce77414bdc 100644
--- a/drivers/rtc/rtc-rc5t583.c
+++ b/drivers/rtc/rtc-rc5t583.c
@@ -128,6 +128,7 @@ static int rc5t583_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alm)
return ret;
}
+ alm->time.tm_sec = 0;
alm->time.tm_min = bcd2bin(alarm_data[0]);
alm->time.tm_hour = bcd2bin(alarm_data[1]);
alm->time.tm_mday = bcd2bin(alarm_data[2]);
diff --git a/drivers/rtc/rtc-rs5c372.c b/drivers/rtc/rtc-rs5c372.c
index ef86229428fc..c8c757466783 100644
--- a/drivers/rtc/rtc-rs5c372.c
+++ b/drivers/rtc/rtc-rs5c372.c
@@ -341,12 +341,6 @@ static int rs5c_read_alarm(struct device *dev, struct rtc_wkalrm *t)
t->time.tm_sec = 0;
t->time.tm_min = bcd2bin(rs5c->regs[RS5C_REG_ALARM_A_MIN] & 0x7f);
t->time.tm_hour = rs5c_reg2hr(rs5c, rs5c->regs[RS5C_REG_ALARM_A_HOURS]);
- t->time.tm_mday = -1;
- t->time.tm_mon = -1;
- t->time.tm_year = -1;
- t->time.tm_wday = -1;
- t->time.tm_yday = -1;
- t->time.tm_isdst = -1;
/* ... and status */
t->enabled = !!(rs5c->regs[RS5C_REG_CTRL1] & RS5C_CTRL1_AALE);
diff --git a/drivers/rtc/rtc-rv8803.c b/drivers/rtc/rtc-rv8803.c
index f623038e586e..9a2f6a95d5a7 100644
--- a/drivers/rtc/rtc-rv8803.c
+++ b/drivers/rtc/rtc-rv8803.c
@@ -13,12 +13,15 @@
#include <linux/bcd.h>
#include <linux/bitops.h>
+#include <linux/log2.h>
#include <linux/i2c.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/rtc.h>
+#define RV8803_I2C_TRY_COUNT 4
+
#define RV8803_SEC 0x00
#define RV8803_MIN 0x01
#define RV8803_HOUR 0x02
@@ -56,19 +59,85 @@ struct rv8803_data {
u8 ctrl;
};
+static int rv8803_read_reg(const struct i2c_client *client, u8 reg)
+{
+ int try = RV8803_I2C_TRY_COUNT;
+ s32 ret;
+
+ /*
+ * There is a 61µs window during which the RTC does not acknowledge I2C
+ * transfers. In that case, ensure that there are multiple attempts.
+ */
+ do
+ ret = i2c_smbus_read_byte_data(client, reg);
+ while ((ret == -ENXIO || ret == -EIO) && --try);
+ if (ret < 0)
+ dev_err(&client->dev, "Unable to read register 0x%02x\n", reg);
+
+ return ret;
+}
+
+static int rv8803_read_regs(const struct i2c_client *client,
+ u8 reg, u8 count, u8 *values)
+{
+ int try = RV8803_I2C_TRY_COUNT;
+ s32 ret;
+
+ do
+ ret = i2c_smbus_read_i2c_block_data(client, reg, count, values);
+ while ((ret == -ENXIO || ret == -EIO) && --try);
+ if (ret != count) {
+ dev_err(&client->dev,
+ "Unable to read registers 0x%02x..0x%02x\n",
+ reg, reg + count - 1);
+ return ret < 0 ? ret : -EIO;
+ }
+
+ return 0;
+}
+
+static int rv8803_write_reg(const struct i2c_client *client, u8 reg, u8 value)
+{
+ int try = RV8803_I2C_TRY_COUNT;
+ s32 ret;
+
+ do
+ ret = i2c_smbus_write_byte_data(client, reg, value);
+ while ((ret == -ENXIO || ret == -EIO) && --try);
+ if (ret)
+ dev_err(&client->dev, "Unable to write register 0x%02x\n", reg);
+
+ return ret;
+}
+
+static int rv8803_write_regs(const struct i2c_client *client,
+ u8 reg, u8 count, const u8 *values)
+{
+ int try = RV8803_I2C_TRY_COUNT;
+ s32 ret;
+
+ do
+ ret = i2c_smbus_write_i2c_block_data(client, reg, count,
+ values);
+ while ((ret == -ENXIO || ret == -EIO) && --try);
+ if (ret)
+ dev_err(&client->dev,
+ "Unable to write registers 0x%02x..0x%02x\n",
+ reg, reg + count - 1);
+
+ return ret;
+}
+
static irqreturn_t rv8803_handle_irq(int irq, void *dev_id)
{
struct i2c_client *client = dev_id;
struct rv8803_data *rv8803 = i2c_get_clientdata(client);
unsigned long events = 0;
- int flags, try = 0;
+ int flags;
mutex_lock(&rv8803->flags_lock);
- do {
- flags = i2c_smbus_read_byte_data(client, RV8803_FLAG);
- try++;
- } while ((flags == -ENXIO) && (try < 3));
+ flags = rv8803_read_reg(client, RV8803_FLAG);
if (flags <= 0) {
mutex_unlock(&rv8803->flags_lock);
return IRQ_NONE;
@@ -100,9 +169,8 @@ static irqreturn_t rv8803_handle_irq(int irq, void *dev_id)
if (events) {
rtc_update_irq(rv8803->rtc, 1, events);
- i2c_smbus_write_byte_data(client, RV8803_FLAG, flags);
- i2c_smbus_write_byte_data(rv8803->client, RV8803_CTRL,
- rv8803->ctrl);
+ rv8803_write_reg(client, RV8803_FLAG, flags);
+ rv8803_write_reg(rv8803->client, RV8803_CTRL, rv8803->ctrl);
}
mutex_unlock(&rv8803->flags_lock);
@@ -118,7 +186,7 @@ static int rv8803_get_time(struct device *dev, struct rtc_time *tm)
u8 *date = date1;
int ret, flags;
- flags = i2c_smbus_read_byte_data(rv8803->client, RV8803_FLAG);
+ flags = rv8803_read_reg(rv8803->client, RV8803_FLAG);
if (flags < 0)
return flags;
@@ -127,16 +195,14 @@ static int rv8803_get_time(struct device *dev, struct rtc_time *tm)
return -EINVAL;
}
- ret = i2c_smbus_read_i2c_block_data(rv8803->client, RV8803_SEC,
- 7, date);
- if (ret != 7)
- return ret < 0 ? ret : -EIO;
+ ret = rv8803_read_regs(rv8803->client, RV8803_SEC, 7, date);
+ if (ret)
+ return ret;
if ((date1[RV8803_SEC] & 0x7f) == bin2bcd(59)) {
- ret = i2c_smbus_read_i2c_block_data(rv8803->client, RV8803_SEC,
- 7, date2);
- if (ret != 7)
- return ret < 0 ? ret : -EIO;
+ ret = rv8803_read_regs(rv8803->client, RV8803_SEC, 7, date2);
+ if (ret)
+ return ret;
if ((date2[RV8803_SEC] & 0x7f) != bin2bcd(59))
date = date2;
@@ -145,23 +211,33 @@ static int rv8803_get_time(struct device *dev, struct rtc_time *tm)
tm->tm_sec = bcd2bin(date[RV8803_SEC] & 0x7f);
tm->tm_min = bcd2bin(date[RV8803_MIN] & 0x7f);
tm->tm_hour = bcd2bin(date[RV8803_HOUR] & 0x3f);
- tm->tm_wday = ffs(date[RV8803_WEEK] & 0x7f);
+ tm->tm_wday = ilog2(date[RV8803_WEEK] & 0x7f);
tm->tm_mday = bcd2bin(date[RV8803_DAY] & 0x3f);
tm->tm_mon = bcd2bin(date[RV8803_MONTH] & 0x1f) - 1;
tm->tm_year = bcd2bin(date[RV8803_YEAR]) + 100;
- return rtc_valid_tm(tm);
+ return 0;
}
static int rv8803_set_time(struct device *dev, struct rtc_time *tm)
{
struct rv8803_data *rv8803 = dev_get_drvdata(dev);
u8 date[7];
- int flags, ret;
+ int ctrl, flags, ret;
if ((tm->tm_year < 100) || (tm->tm_year > 199))
return -EINVAL;
+ ctrl = rv8803_read_reg(rv8803->client, RV8803_CTRL);
+ if (ctrl < 0)
+ return ctrl;
+
+ /* Stop the clock */
+ ret = rv8803_write_reg(rv8803->client, RV8803_CTRL,
+ ctrl | RV8803_CTRL_RESET);
+ if (ret)
+ return ret;
+
date[RV8803_SEC] = bin2bcd(tm->tm_sec);
date[RV8803_MIN] = bin2bcd(tm->tm_min);
date[RV8803_HOUR] = bin2bcd(tm->tm_hour);
@@ -170,21 +246,26 @@ static int rv8803_set_time(struct device *dev, struct rtc_time *tm)
date[RV8803_MONTH] = bin2bcd(tm->tm_mon + 1);
date[RV8803_YEAR] = bin2bcd(tm->tm_year - 100);
- ret = i2c_smbus_write_i2c_block_data(rv8803->client, RV8803_SEC,
- 7, date);
- if (ret < 0)
+ ret = rv8803_write_regs(rv8803->client, RV8803_SEC, 7, date);
+ if (ret)
+ return ret;
+
+ /* Restart the clock */
+ ret = rv8803_write_reg(rv8803->client, RV8803_CTRL,
+ ctrl & ~RV8803_CTRL_RESET);
+ if (ret)
return ret;
mutex_lock(&rv8803->flags_lock);
- flags = i2c_smbus_read_byte_data(rv8803->client, RV8803_FLAG);
+ flags = rv8803_read_reg(rv8803->client, RV8803_FLAG);
if (flags < 0) {
mutex_unlock(&rv8803->flags_lock);
return flags;
}
- ret = i2c_smbus_write_byte_data(rv8803->client, RV8803_FLAG,
- flags & ~RV8803_FLAG_V2F);
+ ret = rv8803_write_reg(rv8803->client, RV8803_FLAG,
+ flags & ~(RV8803_FLAG_V1F | RV8803_FLAG_V2F));
mutex_unlock(&rv8803->flags_lock);
@@ -198,22 +279,18 @@ static int rv8803_get_alarm(struct device *dev, struct rtc_wkalrm *alrm)
u8 alarmvals[3];
int flags, ret;
- ret = i2c_smbus_read_i2c_block_data(client, RV8803_ALARM_MIN,
- 3, alarmvals);
- if (ret != 3)
- return ret < 0 ? ret : -EIO;
+ ret = rv8803_read_regs(client, RV8803_ALARM_MIN, 3, alarmvals);
+ if (ret)
+ return ret;
- flags = i2c_smbus_read_byte_data(client, RV8803_FLAG);
+ flags = rv8803_read_reg(client, RV8803_FLAG);
if (flags < 0)
return flags;
alrm->time.tm_sec = 0;
alrm->time.tm_min = bcd2bin(alarmvals[0] & 0x7f);
alrm->time.tm_hour = bcd2bin(alarmvals[1] & 0x3f);
- alrm->time.tm_wday = -1;
alrm->time.tm_mday = bcd2bin(alarmvals[2] & 0x3f);
- alrm->time.tm_mon = -1;
- alrm->time.tm_year = -1;
alrm->enabled = !!(rv8803->ctrl & RV8803_CTRL_AIE);
alrm->pending = (flags & RV8803_FLAG_AF) && alrm->enabled;
@@ -239,10 +316,10 @@ static int rv8803_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
mutex_lock(&rv8803->flags_lock);
- ret = i2c_smbus_read_i2c_block_data(client, RV8803_FLAG, 2, ctrl);
- if (ret != 2) {
+ ret = rv8803_read_regs(client, RV8803_FLAG, 2, ctrl);
+ if (ret) {
mutex_unlock(&rv8803->flags_lock);
- return ret < 0 ? ret : -EIO;
+ return ret;
}
alarmvals[0] = bin2bcd(alrm->time.tm_min);
@@ -251,8 +328,8 @@ static int rv8803_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
if (rv8803->ctrl & (RV8803_CTRL_AIE | RV8803_CTRL_UIE)) {
rv8803->ctrl &= ~(RV8803_CTRL_AIE | RV8803_CTRL_UIE);
- err = i2c_smbus_write_byte_data(rv8803->client, RV8803_CTRL,
- rv8803->ctrl);
+ err = rv8803_write_reg(rv8803->client, RV8803_CTRL,
+ rv8803->ctrl);
if (err) {
mutex_unlock(&rv8803->flags_lock);
return err;
@@ -260,13 +337,12 @@ static int rv8803_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
}
ctrl[1] &= ~RV8803_FLAG_AF;
- err = i2c_smbus_write_byte_data(rv8803->client, RV8803_FLAG, ctrl[1]);
+ err = rv8803_write_reg(rv8803->client, RV8803_FLAG, ctrl[1]);
mutex_unlock(&rv8803->flags_lock);
if (err)
return err;
- err = i2c_smbus_write_i2c_block_data(rv8803->client, RV8803_ALARM_MIN,
- 3, alarmvals);
+ err = rv8803_write_regs(rv8803->client, RV8803_ALARM_MIN, 3, alarmvals);
if (err)
return err;
@@ -276,8 +352,8 @@ static int rv8803_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
if (rv8803->rtc->aie_timer.enabled)
rv8803->ctrl |= RV8803_CTRL_AIE;
- err = i2c_smbus_write_byte_data(rv8803->client, RV8803_CTRL,
- rv8803->ctrl);
+ err = rv8803_write_reg(rv8803->client, RV8803_CTRL,
+ rv8803->ctrl);
if (err)
return err;
}
@@ -306,21 +382,20 @@ static int rv8803_alarm_irq_enable(struct device *dev, unsigned int enabled)
}
mutex_lock(&rv8803->flags_lock);
- flags = i2c_smbus_read_byte_data(client, RV8803_FLAG);
+ flags = rv8803_read_reg(client, RV8803_FLAG);
if (flags < 0) {
mutex_unlock(&rv8803->flags_lock);
return flags;
}
flags &= ~(RV8803_FLAG_AF | RV8803_FLAG_UF);
- err = i2c_smbus_write_byte_data(client, RV8803_FLAG, flags);
+ err = rv8803_write_reg(client, RV8803_FLAG, flags);
mutex_unlock(&rv8803->flags_lock);
if (err)
return err;
if (ctrl != rv8803->ctrl) {
rv8803->ctrl = ctrl;
- err = i2c_smbus_write_byte_data(client, RV8803_CTRL,
- rv8803->ctrl);
+ err = rv8803_write_reg(client, RV8803_CTRL, rv8803->ctrl);
if (err)
return err;
}
@@ -336,7 +411,7 @@ static int rv8803_ioctl(struct device *dev, unsigned int cmd, unsigned long arg)
switch (cmd) {
case RTC_VL_READ:
- flags = i2c_smbus_read_byte_data(client, RV8803_FLAG);
+ flags = rv8803_read_reg(client, RV8803_FLAG);
if (flags < 0)
return flags;
@@ -355,16 +430,16 @@ static int rv8803_ioctl(struct device *dev, unsigned int cmd, unsigned long arg)
case RTC_VL_CLR:
mutex_lock(&rv8803->flags_lock);
- flags = i2c_smbus_read_byte_data(client, RV8803_FLAG);
+ flags = rv8803_read_reg(client, RV8803_FLAG);
if (flags < 0) {
mutex_unlock(&rv8803->flags_lock);
return flags;
}
flags &= ~(RV8803_FLAG_V1F | RV8803_FLAG_V2F);
- ret = i2c_smbus_write_byte_data(client, RV8803_FLAG, flags);
+ ret = rv8803_write_reg(client, RV8803_FLAG, flags);
mutex_unlock(&rv8803->flags_lock);
- if (ret < 0)
+ if (ret)
return ret;
return 0;
@@ -382,8 +457,8 @@ static ssize_t rv8803_nvram_write(struct file *filp, struct kobject *kobj,
struct i2c_client *client = to_i2c_client(dev);
int ret;
- ret = i2c_smbus_write_byte_data(client, RV8803_RAM, buf[0]);
- if (ret < 0)
+ ret = rv8803_write_reg(client, RV8803_RAM, buf[0]);
+ if (ret)
return ret;
return 1;
@@ -397,7 +472,7 @@ static ssize_t rv8803_nvram_read(struct file *filp, struct kobject *kobj,
struct i2c_client *client = to_i2c_client(dev);
int ret;
- ret = i2c_smbus_read_byte_data(client, RV8803_RAM);
+ ret = rv8803_read_reg(client, RV8803_RAM);
if (ret < 0)
return ret;
@@ -427,7 +502,7 @@ static int rv8803_probe(struct i2c_client *client,
{
struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
struct rv8803_data *rv8803;
- int err, flags, try = 0;
+ int err, flags;
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA |
I2C_FUNC_SMBUS_I2C_BLOCK)) {
@@ -444,16 +519,7 @@ static int rv8803_probe(struct i2c_client *client,
rv8803->client = client;
i2c_set_clientdata(client, rv8803);
- /*
- * There is a 60µs window where the RTC may not reply on the i2c bus in
- * that case, the transfer is not ACKed. In that case, ensure there are
- * multiple attempts.
- */
- do {
- flags = i2c_smbus_read_byte_data(client, RV8803_FLAG);
- try++;
- } while ((flags == -ENXIO) && (try < 3));
-
+ flags = rv8803_read_reg(client, RV8803_FLAG);
if (flags < 0)
return flags;
@@ -488,12 +554,7 @@ static int rv8803_probe(struct i2c_client *client,
return PTR_ERR(rv8803->rtc);
}
- try = 0;
- do {
- err = i2c_smbus_write_byte_data(rv8803->client, RV8803_EXT,
- RV8803_EXT_WADA);
- try++;
- } while ((err == -ENXIO) && (try < 3));
+ err = rv8803_write_reg(rv8803->client, RV8803_EXT, RV8803_EXT_WADA);
if (err)
return err;
diff --git a/drivers/rtc/rtc-rx8010.c b/drivers/rtc/rtc-rx8010.c
index 772d221ec2d9..7163b91bb773 100644
--- a/drivers/rtc/rtc-rx8010.c
+++ b/drivers/rtc/rtc-rx8010.c
@@ -272,15 +272,9 @@ static int rx8010_read_alarm(struct device *dev, struct rtc_wkalrm *t)
t->time.tm_min = bcd2bin(alarmvals[0] & 0x7f);
t->time.tm_hour = bcd2bin(alarmvals[1] & 0x3f);
- if (alarmvals[2] & RX8010_ALARM_AE)
- t->time.tm_mday = -1;
- else
+ if (!(alarmvals[2] & RX8010_ALARM_AE))
t->time.tm_mday = bcd2bin(alarmvals[2] & 0x7f);
- t->time.tm_wday = -1;
- t->time.tm_mon = -1;
- t->time.tm_year = -1;
-
t->enabled = !!(rx8010->ctrlreg & RX8010_CTRL_AIE);
t->pending = (flagreg & RX8010_FLAG_AF) && t->enabled;
diff --git a/drivers/rtc/rtc-rx8025.c b/drivers/rtc/rtc-rx8025.c
index 9f105efbc546..2b85cc7a24e7 100644
--- a/drivers/rtc/rtc-rx8025.c
+++ b/drivers/rtc/rtc-rx8025.c
@@ -319,11 +319,6 @@ static int rx8025_read_alarm(struct device *dev, struct rtc_wkalrm *t)
t->time.tm_hour = bcd2bin(ald[1] & 0x1f) % 12
+ (ald[1] & 0x20 ? 12 : 0);
- t->time.tm_wday = -1;
- t->time.tm_mday = -1;
- t->time.tm_mon = -1;
- t->time.tm_year = -1;
-
dev_dbg(dev, "%s: date: %ds %dm %dh %dmd %dm %dy\n",
__func__,
t->time.tm_sec, t->time.tm_min, t->time.tm_hour,
diff --git a/drivers/rtc/rtc-s35390a.c b/drivers/rtc/rtc-s35390a.c
index f40afdd0e5f5..5dab4665ca3b 100644
--- a/drivers/rtc/rtc-s35390a.c
+++ b/drivers/rtc/rtc-s35390a.c
@@ -15,6 +15,7 @@
#include <linux/bitrev.h>
#include <linux/bcd.h>
#include <linux/slab.h>
+#include <linux/delay.h>
#define S35390A_CMD_STATUS1 0
#define S35390A_CMD_STATUS2 1
@@ -34,10 +35,14 @@
#define S35390A_ALRM_BYTE_HOURS 1
#define S35390A_ALRM_BYTE_MINS 2
+/* flags for STATUS1 */
#define S35390A_FLAG_POC 0x01
#define S35390A_FLAG_BLD 0x02
+#define S35390A_FLAG_INT2 0x04
#define S35390A_FLAG_24H 0x40
#define S35390A_FLAG_RESET 0x80
+
+/* flag for STATUS2 */
#define S35390A_FLAG_TEST 0x01
#define S35390A_INT2_MODE_MASK 0xF0
@@ -94,19 +99,63 @@ static int s35390a_get_reg(struct s35390a *s35390a, int reg, char *buf, int len)
return 0;
}
-static int s35390a_reset(struct s35390a *s35390a)
+/*
+ * Returns <0 on error, 0 if rtc is setup fine and 1 if the chip was reset.
+ * To keep the information if an irq is pending, pass the value read from
+ * STATUS1 to the caller.
+ */
+static int s35390a_reset(struct s35390a *s35390a, char *status1)
{
- char buf[1];
-
- if (s35390a_get_reg(s35390a, S35390A_CMD_STATUS1, buf, sizeof(buf)) < 0)
- return -EIO;
-
- if (!(buf[0] & (S35390A_FLAG_POC | S35390A_FLAG_BLD)))
+ char buf;
+ int ret;
+ unsigned initcount = 0;
+
+ ret = s35390a_get_reg(s35390a, S35390A_CMD_STATUS1, status1, 1);
+ if (ret < 0)
+ return ret;
+
+ if (*status1 & S35390A_FLAG_POC)
+ /*
+ * Do not communicate for 0.5 seconds since the power-on
+ * detection circuit is in operation.
+ */
+ msleep(500);
+ else if (!(*status1 & S35390A_FLAG_BLD))
+ /*
+ * If both POC and BLD are unset everything is fine.
+ */
return 0;
- buf[0] |= (S35390A_FLAG_RESET | S35390A_FLAG_24H);
- buf[0] &= 0xf0;
- return s35390a_set_reg(s35390a, S35390A_CMD_STATUS1, buf, sizeof(buf));
+ /*
+ * At least one of POC and BLD are set, so reinitialise chip. Keeping
+ * this information in the hardware to know later that the time isn't
+ * valid is unfortunately not possible because POC and BLD are cleared
+ * on read. So the reset is best done now.
+ *
+ * The 24H bit is kept over reset, so set it already here.
+ */
+initialize:
+ *status1 = S35390A_FLAG_24H;
+ buf = S35390A_FLAG_RESET | S35390A_FLAG_24H;
+ ret = s35390a_set_reg(s35390a, S35390A_CMD_STATUS1, &buf, 1);
+
+ if (ret < 0)
+ return ret;
+
+ ret = s35390a_get_reg(s35390a, S35390A_CMD_STATUS1, &buf, 1);
+ if (ret < 0)
+ return ret;
+
+ if (buf & (S35390A_FLAG_POC | S35390A_FLAG_BLD)) {
+ /* Try up to five times to reset the chip */
+ if (initcount < 5) {
+ ++initcount;
+ goto initialize;
+ } else
+ return -EIO;
+ }
+
+ return 1;
}
static int s35390a_disable_test_mode(struct s35390a *s35390a)
@@ -217,12 +266,12 @@ static int s35390a_set_alarm(struct i2c_client *client, struct rtc_wkalrm *alm)
alm->time.tm_min, alm->time.tm_hour, alm->time.tm_mday,
alm->time.tm_mon, alm->time.tm_year, alm->time.tm_wday);
- /* disable interrupt */
+ /* disable interrupt (which deasserts the irq line) */
err = s35390a_set_reg(s35390a, S35390A_CMD_STATUS2, &sts, sizeof(sts));
if (err < 0)
return err;
- /* clear pending interrupt, if any */
+ /* clear pending interrupt (in STATUS1 only), if any */
err = s35390a_get_reg(s35390a, S35390A_CMD_STATUS1, &sts, sizeof(sts));
if (err < 0)
return err;
@@ -242,6 +291,8 @@ static int s35390a_set_alarm(struct i2c_client *client, struct rtc_wkalrm *alm)
if (alm->time.tm_wday != -1)
buf[S35390A_ALRM_BYTE_WDAY] = bin2bcd(alm->time.tm_wday) | 0x80;
+ else
+ buf[S35390A_ALRM_BYTE_WDAY] = 0;
buf[S35390A_ALRM_BYTE_HOURS] = s35390a_hr2reg(s35390a,
alm->time.tm_hour) | 0x80;
@@ -269,23 +320,43 @@ static int s35390a_read_alarm(struct i2c_client *client, struct rtc_wkalrm *alm)
if (err < 0)
return err;
- if (bitrev8(sts) != S35390A_INT2_MODE_ALARM)
- return -EINVAL;
+ if ((bitrev8(sts) & S35390A_INT2_MODE_MASK) != S35390A_INT2_MODE_ALARM) {
+ /*
+ * When the alarm isn't enabled, the register to configure
+ * the alarm time isn't accessible.
+ */
+ alm->enabled = 0;
+ return 0;
+ } else {
+ alm->enabled = 1;
+ }
err = s35390a_get_reg(s35390a, S35390A_CMD_INT2_REG1, buf, sizeof(buf));
if (err < 0)
return err;
/* This chip returns the bits of each byte in reverse order */
- for (i = 0; i < 3; ++i) {
+ for (i = 0; i < 3; ++i)
buf[i] = bitrev8(buf[i]);
- buf[i] &= ~0x80;
- }
- alm->time.tm_wday = bcd2bin(buf[S35390A_ALRM_BYTE_WDAY]);
- alm->time.tm_hour = s35390a_reg2hr(s35390a,
- buf[S35390A_ALRM_BYTE_HOURS]);
- alm->time.tm_min = bcd2bin(buf[S35390A_ALRM_BYTE_MINS]);
+ /*
+ * B0 of the three matching registers is an enable flag. Iff it is set
+ * the configured value is used for matching.
+ */
+ if (buf[S35390A_ALRM_BYTE_WDAY] & 0x80)
+ alm->time.tm_wday =
+ bcd2bin(buf[S35390A_ALRM_BYTE_WDAY] & ~0x80);
+
+ if (buf[S35390A_ALRM_BYTE_HOURS] & 0x80)
+ alm->time.tm_hour =
+ s35390a_reg2hr(s35390a,
+ buf[S35390A_ALRM_BYTE_HOURS] & ~0x80);
+
+ if (buf[S35390A_ALRM_BYTE_MINS] & 0x80)
+ alm->time.tm_min = bcd2bin(buf[S35390A_ALRM_BYTE_MINS] & ~0x80);
+
+ /* alarm triggers always at s=0 */
+ alm->time.tm_sec = 0;
dev_dbg(&client->dev, "%s: alm is mins=%d, hours=%d, wday=%d\n",
__func__, alm->time.tm_min, alm->time.tm_hour,
@@ -327,11 +398,11 @@ static struct i2c_driver s35390a_driver;
static int s35390a_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
- int err;
+ int err, err_reset;
unsigned int i;
struct s35390a *s35390a;
struct rtc_time tm;
- char buf[1];
+ char buf, status1;
if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
err = -ENODEV;
@@ -360,29 +431,35 @@ static int s35390a_probe(struct i2c_client *client,
}
}
- err = s35390a_reset(s35390a);
- if (err < 0) {
+ err_reset = s35390a_reset(s35390a, &status1);
+ if (err_reset < 0) {
+ err = err_reset;
dev_err(&client->dev, "error resetting chip\n");
goto exit_dummy;
}
- err = s35390a_disable_test_mode(s35390a);
- if (err < 0) {
- dev_err(&client->dev, "error disabling test mode\n");
- goto exit_dummy;
- }
-
- err = s35390a_get_reg(s35390a, S35390A_CMD_STATUS1, buf, sizeof(buf));
- if (err < 0) {
- dev_err(&client->dev, "error checking 12/24 hour mode\n");
- goto exit_dummy;
- }
- if (buf[0] & S35390A_FLAG_24H)
+ if (status1 & S35390A_FLAG_24H)
s35390a->twentyfourhour = 1;
else
s35390a->twentyfourhour = 0;
- if (s35390a_get_datetime(client, &tm) < 0)
+ if (status1 & S35390A_FLAG_INT2) {
+ /* disable alarm (and maybe test mode) */
+ buf = 0;
+ err = s35390a_set_reg(s35390a, S35390A_CMD_STATUS2, &buf, 1);
+ if (err < 0) {
+ dev_err(&client->dev, "error disabling alarm");
+ goto exit_dummy;
+ }
+ } else {
+ err = s35390a_disable_test_mode(s35390a);
+ if (err < 0) {
+ dev_err(&client->dev, "error disabling test mode\n");
+ goto exit_dummy;
+ }
+ }
+
+ if (err_reset > 0 || s35390a_get_datetime(client, &tm) < 0)
dev_warn(&client->dev, "clock needs to be set\n");
device_set_wakeup_capable(&client->dev, 1);
@@ -395,6 +472,10 @@ static int s35390a_probe(struct i2c_client *client,
err = PTR_ERR(s35390a->rtc);
goto exit_dummy;
}
+
+ if (status1 & S35390A_FLAG_INT2)
+ rtc_update_irq(s35390a->rtc, 1, RTC_AF);
+
return 0;
exit_dummy:
diff --git a/drivers/rtc/rtc-s3c.c b/drivers/rtc/rtc-s3c.c
index d01ad7e8078e..d44fb34df8fe 100644
--- a/drivers/rtc/rtc-s3c.c
+++ b/drivers/rtc/rtc-s3c.c
@@ -149,12 +149,14 @@ static int s3c_rtc_setfreq(struct s3c_rtc *info, int freq)
if (!is_power_of_2(freq))
return -EINVAL;
+ s3c_rtc_enable_clk(info);
spin_lock_irq(&info->pie_lock);
if (info->data->set_freq)
info->data->set_freq(info, freq);
spin_unlock_irq(&info->pie_lock);
+ s3c_rtc_disable_clk(info);
return 0;
}
@@ -264,35 +266,23 @@ static int s3c_rtc_getalarm(struct device *dev, struct rtc_wkalrm *alrm)
/* decode the alarm enable field */
if (alm_en & S3C2410_RTCALM_SECEN)
alm_tm->tm_sec = bcd2bin(alm_tm->tm_sec);
- else
- alm_tm->tm_sec = -1;
if (alm_en & S3C2410_RTCALM_MINEN)
alm_tm->tm_min = bcd2bin(alm_tm->tm_min);
- else
- alm_tm->tm_min = -1;
if (alm_en & S3C2410_RTCALM_HOUREN)
alm_tm->tm_hour = bcd2bin(alm_tm->tm_hour);
- else
- alm_tm->tm_hour = -1;
if (alm_en & S3C2410_RTCALM_DAYEN)
alm_tm->tm_mday = bcd2bin(alm_tm->tm_mday);
- else
- alm_tm->tm_mday = -1;
if (alm_en & S3C2410_RTCALM_MONEN) {
alm_tm->tm_mon = bcd2bin(alm_tm->tm_mon);
alm_tm->tm_mon -= 1;
- } else {
- alm_tm->tm_mon = -1;
}
if (alm_en & S3C2410_RTCALM_YEAREN)
alm_tm->tm_year = bcd2bin(alm_tm->tm_year);
- else
- alm_tm->tm_year = -1;
return 0;
}
@@ -577,8 +567,6 @@ static int s3c_rtc_probe(struct platform_device *pdev)
s3c_rtc_setfreq(info, 1);
- s3c_rtc_disable_clk(info);
-
return 0;
err_nortc:
diff --git a/drivers/rtc/rtc-sh.c b/drivers/rtc/rtc-sh.c
index a45845a571e5..17b6235d67a5 100644
--- a/drivers/rtc/rtc-sh.c
+++ b/drivers/rtc/rtc-sh.c
@@ -481,7 +481,6 @@ static int sh_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *wkalrm)
tm->tm_mon = sh_rtc_read_alarm_value(rtc, RMONAR);
if (tm->tm_mon > 0)
tm->tm_mon -= 1; /* RTC is 1-12, tm_mon is 0-11 */
- tm->tm_year = 0xffff;
wkalrm->enabled = (readb(rtc->regbase + RCR1) & RCR1_AIE) ? 1 : 0;
@@ -500,52 +499,13 @@ static inline void sh_rtc_write_alarm_value(struct sh_rtc *rtc,
writeb(bin2bcd(value) | AR_ENB, rtc->regbase + reg_off);
}
-static int sh_rtc_check_alarm(struct rtc_time *tm)
-{
- /*
- * The original rtc says anything > 0xc0 is "don't care" or "match
- * all" - most users use 0xff but rtc-dev uses -1 for the same thing.
- * The original rtc doesn't support years - some things use -1 and
- * some 0xffff. We use -1 to make out tests easier.
- */
- if (tm->tm_year == 0xffff)
- tm->tm_year = -1;
- if (tm->tm_mon >= 0xff)
- tm->tm_mon = -1;
- if (tm->tm_mday >= 0xff)
- tm->tm_mday = -1;
- if (tm->tm_wday >= 0xff)
- tm->tm_wday = -1;
- if (tm->tm_hour >= 0xff)
- tm->tm_hour = -1;
- if (tm->tm_min >= 0xff)
- tm->tm_min = -1;
- if (tm->tm_sec >= 0xff)
- tm->tm_sec = -1;
-
- if (tm->tm_year > 9999 ||
- tm->tm_mon >= 12 ||
- tm->tm_mday == 0 || tm->tm_mday >= 32 ||
- tm->tm_wday >= 7 ||
- tm->tm_hour >= 24 ||
- tm->tm_min >= 60 ||
- tm->tm_sec >= 60)
- return -EINVAL;
-
- return 0;
-}
-
static int sh_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *wkalrm)
{
struct platform_device *pdev = to_platform_device(dev);
struct sh_rtc *rtc = platform_get_drvdata(pdev);
unsigned int rcr1;
struct rtc_time *tm = &wkalrm->time;
- int mon, err;
-
- err = sh_rtc_check_alarm(tm);
- if (unlikely(err < 0))
- return err;
+ int mon;
spin_lock_irq(&rtc->lock);
diff --git a/drivers/rtc/rtc-tegra.c b/drivers/rtc/rtc-tegra.c
index 60232bd366ef..15ac597d54da 100644
--- a/drivers/rtc/rtc-tegra.c
+++ b/drivers/rtc/rtc-tegra.c
@@ -179,12 +179,6 @@ static int tegra_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alarm)
if (sec == 0) {
/* alarm is disabled. */
alarm->enabled = 0;
- alarm->time.tm_mon = -1;
- alarm->time.tm_mday = -1;
- alarm->time.tm_year = -1;
- alarm->time.tm_hour = -1;
- alarm->time.tm_min = -1;
- alarm->time.tm_sec = -1;
} else {
/* alarm is enabled. */
alarm->enabled = 1;
diff --git a/drivers/rtc/rtc-v3020.c b/drivers/rtc/rtc-v3020.c
index 7a0436329d6c..1f3117b5a83c 100644
--- a/drivers/rtc/rtc-v3020.c
+++ b/drivers/rtc/rtc-v3020.c
@@ -25,7 +25,7 @@
#include <linux/rtc.h>
#include <linux/types.h>
#include <linux/bcd.h>
-#include <linux/rtc-v3020.h>
+#include <linux/platform_data/rtc-v3020.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/slab.h>
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index 8973d34ce5ba..fb1b56a71475 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -1643,9 +1643,18 @@ void dasd_int_handler(struct ccw_device *cdev, unsigned long intparm,
u8 *sense = NULL;
int expires;
+ cqr = (struct dasd_ccw_req *) intparm;
if (IS_ERR(irb)) {
switch (PTR_ERR(irb)) {
case -EIO:
+ if (cqr && cqr->status == DASD_CQR_CLEAR_PENDING) {
+ device = (struct dasd_device *) cqr->startdev;
+ cqr->status = DASD_CQR_CLEARED;
+ dasd_device_clear_timer(device);
+ wake_up(&dasd_flush_wq);
+ dasd_schedule_device_bh(device);
+ return;
+ }
break;
case -ETIMEDOUT:
DBF_EVENT_DEVID(DBF_WARNING, cdev, "%s: "
@@ -1661,7 +1670,6 @@ void dasd_int_handler(struct ccw_device *cdev, unsigned long intparm,
}
now = get_tod_clock();
- cqr = (struct dasd_ccw_req *) intparm;
/* check for conditions that should be handled immediately */
if (!cqr ||
!(scsw_dstat(&irb->scsw) == (DEV_STAT_CHN_END | DEV_STAT_DEV_END) &&
diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c
index fd2eff440098..98bbec44bcd0 100644
--- a/drivers/s390/block/dasd_eckd.c
+++ b/drivers/s390/block/dasd_eckd.c
@@ -5078,6 +5078,8 @@ static int dasd_eckd_read_message_buffer(struct dasd_device *device,
return PTR_ERR(cqr);
}
+ cqr->lpm = lpum;
+retry:
cqr->startdev = device;
cqr->memdev = device;
cqr->block = NULL;
@@ -5122,6 +5124,14 @@ static int dasd_eckd_read_message_buffer(struct dasd_device *device,
(prssdp + 1);
memcpy(messages, message_buf,
sizeof(struct dasd_rssd_messages));
+ } else if (cqr->lpm) {
+ /*
+ * on z/VM we might not be able to do I/O on the requested path
+ * but instead we get the required information on any path
+ * so retry with open path mask
+ */
+ cqr->lpm = 0;
+ goto retry;
} else
DBF_EVENT_DEVID(DBF_WARNING, device->cdev,
"Reading messages failed with rc=%d\n"
diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
index 7ada078ffdd0..6a58bc8f46e2 100644
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -762,7 +762,6 @@ static int io_subchannel_initialize_dev(struct subchannel *sch,
priv->state = DEV_STATE_NOT_OPER;
priv->dev_id.devno = sch->schib.pmcw.dev;
priv->dev_id.ssid = sch->schid.ssid;
- priv->schid = sch->schid;
INIT_WORK(&priv->todo_work, ccw_device_todo);
INIT_LIST_HEAD(&priv->cmb_list);
@@ -1000,7 +999,6 @@ static int ccw_device_move_to_sch(struct ccw_device *cdev,
put_device(&old_sch->dev);
/* Initialize new subchannel. */
spin_lock_irq(sch->lock);
- cdev->private->schid = sch->schid;
cdev->ccwlock = sch->lock;
if (!sch_is_pseudo_sch(sch))
sch_set_cdev(sch, cdev);
diff --git a/drivers/s390/cio/device_status.c b/drivers/s390/cio/device_status.c
index 15b56a15db15..9bc3512374c9 100644
--- a/drivers/s390/cio/device_status.c
+++ b/drivers/s390/cio/device_status.c
@@ -26,6 +26,7 @@
static void
ccw_device_msg_control_check(struct ccw_device *cdev, struct irb *irb)
{
+ struct subchannel *sch = to_subchannel(cdev->dev.parent);
char dbf_text[15];
if (!scsw_is_valid_cstat(&irb->scsw) ||
@@ -36,10 +37,10 @@ ccw_device_msg_control_check(struct ccw_device *cdev, struct irb *irb)
"received"
" ... device %04x on subchannel 0.%x.%04x, dev_stat "
": %02X sch_stat : %02X\n",
- cdev->private->dev_id.devno, cdev->private->schid.ssid,
- cdev->private->schid.sch_no,
+ cdev->private->dev_id.devno, sch->schid.ssid,
+ sch->schid.sch_no,
scsw_dstat(&irb->scsw), scsw_cstat(&irb->scsw));
- sprintf(dbf_text, "chk%x", cdev->private->schid.sch_no);
+ sprintf(dbf_text, "chk%x", sch->schid.sch_no);
CIO_TRACE_EVENT(0, dbf_text);
CIO_HEX_EVENT(0, irb, sizeof(struct irb));
}
diff --git a/drivers/s390/cio/io_sch.h b/drivers/s390/cio/io_sch.h
index 8975060af96c..220f49145b2f 100644
--- a/drivers/s390/cio/io_sch.h
+++ b/drivers/s390/cio/io_sch.h
@@ -120,7 +120,6 @@ struct ccw_device_private {
int state; /* device state */
atomic_t onoff;
struct ccw_dev_id dev_id; /* device id */
- struct subchannel_id schid; /* subchannel number */
struct ccw_request req; /* internal I/O request */
int iretry;
u8 pgid_valid_mask; /* mask of valid PGIDs */
diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c
index 4bb5262f7aee..71bf9bded485 100644
--- a/drivers/s390/cio/qdio_main.c
+++ b/drivers/s390/cio/qdio_main.c
@@ -686,6 +686,15 @@ static void qdio_kick_handler(struct qdio_q *q)
q->qdio_error = 0;
}
+static inline int qdio_tasklet_schedule(struct qdio_q *q)
+{
+ if (likely(q->irq_ptr->state == QDIO_IRQ_STATE_ACTIVE)) {
+ tasklet_schedule(&q->tasklet);
+ return 0;
+ }
+ return -EPERM;
+}
+
static void __qdio_inbound_processing(struct qdio_q *q)
{
qperf_inc(q, tasklet_inbound);
@@ -698,10 +707,8 @@ static void __qdio_inbound_processing(struct qdio_q *q)
if (!qdio_inbound_q_done(q)) {
/* means poll time is not yet over */
qperf_inc(q, tasklet_inbound_resched);
- if (likely(q->irq_ptr->state != QDIO_IRQ_STATE_STOPPED)) {
- tasklet_schedule(&q->tasklet);
+ if (!qdio_tasklet_schedule(q))
return;
- }
}
qdio_stop_polling(q);
@@ -711,8 +718,7 @@ static void __qdio_inbound_processing(struct qdio_q *q)
*/
if (!qdio_inbound_q_done(q)) {
qperf_inc(q, tasklet_inbound_resched2);
- if (likely(q->irq_ptr->state != QDIO_IRQ_STATE_STOPPED))
- tasklet_schedule(&q->tasklet);
+ qdio_tasklet_schedule(q);
}
}
@@ -869,16 +875,15 @@ static void __qdio_outbound_processing(struct qdio_q *q)
* is noticed and outbound_handler is called after some time.
*/
if (qdio_outbound_q_done(q))
- del_timer(&q->u.out.timer);
+ del_timer_sync(&q->u.out.timer);
else
- if (!timer_pending(&q->u.out.timer))
+ if (!timer_pending(&q->u.out.timer) &&
+ likely(q->irq_ptr->state == QDIO_IRQ_STATE_ACTIVE))
mod_timer(&q->u.out.timer, jiffies + 10 * HZ);
return;
sched:
- if (unlikely(q->irq_ptr->state == QDIO_IRQ_STATE_STOPPED))
- return;
- tasklet_schedule(&q->tasklet);
+ qdio_tasklet_schedule(q);
}
/* outbound tasklet */
@@ -892,9 +897,7 @@ void qdio_outbound_timer(unsigned long data)
{
struct qdio_q *q = (struct qdio_q *)data;
- if (unlikely(q->irq_ptr->state == QDIO_IRQ_STATE_STOPPED))
- return;
- tasklet_schedule(&q->tasklet);
+ qdio_tasklet_schedule(q);
}
static inline void qdio_check_outbound_after_thinint(struct qdio_q *q)
@@ -907,7 +910,7 @@ static inline void qdio_check_outbound_after_thinint(struct qdio_q *q)
for_each_output_queue(q->irq_ptr, out, i)
if (!qdio_outbound_q_done(out))
- tasklet_schedule(&out->tasklet);
+ qdio_tasklet_schedule(out);
}
static void __tiqdio_inbound_processing(struct qdio_q *q)
@@ -929,10 +932,8 @@ static void __tiqdio_inbound_processing(struct qdio_q *q)
if (!qdio_inbound_q_done(q)) {
qperf_inc(q, tasklet_inbound_resched);
- if (likely(q->irq_ptr->state != QDIO_IRQ_STATE_STOPPED)) {
- tasklet_schedule(&q->tasklet);
+ if (!qdio_tasklet_schedule(q))
return;
- }
}
qdio_stop_polling(q);
@@ -942,8 +943,7 @@ static void __tiqdio_inbound_processing(struct qdio_q *q)
*/
if (!qdio_inbound_q_done(q)) {
qperf_inc(q, tasklet_inbound_resched2);
- if (likely(q->irq_ptr->state != QDIO_IRQ_STATE_STOPPED))
- tasklet_schedule(&q->tasklet);
+ qdio_tasklet_schedule(q);
}
}
@@ -977,7 +977,7 @@ static void qdio_int_handler_pci(struct qdio_irq *irq_ptr)
int i;
struct qdio_q *q;
- if (unlikely(irq_ptr->state == QDIO_IRQ_STATE_STOPPED))
+ if (unlikely(irq_ptr->state != QDIO_IRQ_STATE_ACTIVE))
return;
for_each_input_queue(irq_ptr, q, i) {
@@ -1003,7 +1003,7 @@ static void qdio_int_handler_pci(struct qdio_irq *irq_ptr)
continue;
if (need_siga_sync(q) && need_siga_sync_out_after_pci(q))
qdio_siga_sync_q(q);
- tasklet_schedule(&q->tasklet);
+ qdio_tasklet_schedule(q);
}
}
@@ -1066,10 +1066,12 @@ void qdio_int_handler(struct ccw_device *cdev, unsigned long intparm,
struct irb *irb)
{
struct qdio_irq *irq_ptr = cdev->private->qdio_data;
+ struct subchannel_id schid;
int cstat, dstat;
if (!intparm || !irq_ptr) {
- DBF_ERROR("qint:%4x", cdev->private->schid.sch_no);
+ ccw_device_get_schid(cdev, &schid);
+ DBF_ERROR("qint:%4x", schid.sch_no);
return;
}
@@ -1122,12 +1124,14 @@ void qdio_int_handler(struct ccw_device *cdev, unsigned long intparm,
int qdio_get_ssqd_desc(struct ccw_device *cdev,
struct qdio_ssqd_desc *data)
{
+ struct subchannel_id schid;
if (!cdev || !cdev->private)
return -EINVAL;
- DBF_EVENT("get ssqd:%4x", cdev->private->schid.sch_no);
- return qdio_setup_get_ssqd(NULL, &cdev->private->schid, data);
+ ccw_device_get_schid(cdev, &schid);
+ DBF_EVENT("get ssqd:%4x", schid.sch_no);
+ return qdio_setup_get_ssqd(NULL, &schid, data);
}
EXPORT_SYMBOL_GPL(qdio_get_ssqd_desc);
@@ -1141,7 +1145,7 @@ static void qdio_shutdown_queues(struct ccw_device *cdev)
tasklet_kill(&q->tasklet);
for_each_output_queue(irq_ptr, q, i) {
- del_timer(&q->u.out.timer);
+ del_timer_sync(&q->u.out.timer);
tasklet_kill(&q->tasklet);
}
}
@@ -1154,14 +1158,15 @@ static void qdio_shutdown_queues(struct ccw_device *cdev)
int qdio_shutdown(struct ccw_device *cdev, int how)
{
struct qdio_irq *irq_ptr = cdev->private->qdio_data;
+ struct subchannel_id schid;
int rc;
- unsigned long flags;
if (!irq_ptr)
return -ENODEV;
WARN_ON_ONCE(irqs_disabled());
- DBF_EVENT("qshutdown:%4x", cdev->private->schid.sch_no);
+ ccw_device_get_schid(cdev, &schid);
+ DBF_EVENT("qshutdown:%4x", schid.sch_no);
mutex_lock(&irq_ptr->setup_mutex);
/*
@@ -1184,7 +1189,7 @@ int qdio_shutdown(struct ccw_device *cdev, int how)
qdio_shutdown_debug_entries(irq_ptr);
/* cleanup subchannel */
- spin_lock_irqsave(get_ccwdev_lock(cdev), flags);
+ spin_lock_irq(get_ccwdev_lock(cdev));
if (how & QDIO_FLAG_CLEANUP_USING_CLEAR)
rc = ccw_device_clear(cdev, QDIO_DOING_CLEANUP);
@@ -1198,12 +1203,12 @@ int qdio_shutdown(struct ccw_device *cdev, int how)
}
qdio_set_state(irq_ptr, QDIO_IRQ_STATE_CLEANUP);
- spin_unlock_irqrestore(get_ccwdev_lock(cdev), flags);
+ spin_unlock_irq(get_ccwdev_lock(cdev));
wait_event_interruptible_timeout(cdev->private->wait_q,
irq_ptr->state == QDIO_IRQ_STATE_INACTIVE ||
irq_ptr->state == QDIO_IRQ_STATE_ERR,
10 * HZ);
- spin_lock_irqsave(get_ccwdev_lock(cdev), flags);
+ spin_lock_irq(get_ccwdev_lock(cdev));
no_cleanup:
qdio_shutdown_thinint(irq_ptr);
@@ -1211,7 +1216,7 @@ no_cleanup:
/* restore interrupt handler */
if ((void *)cdev->handler == (void *)qdio_int_handler)
cdev->handler = irq_ptr->orig_handler;
- spin_unlock_irqrestore(get_ccwdev_lock(cdev), flags);
+ spin_unlock_irq(get_ccwdev_lock(cdev));
qdio_set_state(irq_ptr, QDIO_IRQ_STATE_INACTIVE);
mutex_unlock(&irq_ptr->setup_mutex);
@@ -1228,11 +1233,13 @@ EXPORT_SYMBOL_GPL(qdio_shutdown);
int qdio_free(struct ccw_device *cdev)
{
struct qdio_irq *irq_ptr = cdev->private->qdio_data;
+ struct subchannel_id schid;
if (!irq_ptr)
return -ENODEV;
- DBF_EVENT("qfree:%4x", cdev->private->schid.sch_no);
+ ccw_device_get_schid(cdev, &schid);
+ DBF_EVENT("qfree:%4x", schid.sch_no);
DBF_DEV_EVENT(DBF_ERR, irq_ptr, "dbf abandoned");
mutex_lock(&irq_ptr->setup_mutex);
@@ -1251,9 +1258,11 @@ EXPORT_SYMBOL_GPL(qdio_free);
*/
int qdio_allocate(struct qdio_initialize *init_data)
{
+ struct subchannel_id schid;
struct qdio_irq *irq_ptr;
- DBF_EVENT("qallocate:%4x", init_data->cdev->private->schid.sch_no);
+ ccw_device_get_schid(init_data->cdev, &schid);
+ DBF_EVENT("qallocate:%4x", schid.sch_no);
if ((init_data->no_input_qs && !init_data->input_handler) ||
(init_data->no_output_qs && !init_data->output_handler))
@@ -1331,20 +1340,18 @@ static void qdio_detect_hsicq(struct qdio_irq *irq_ptr)
*/
int qdio_establish(struct qdio_initialize *init_data)
{
- struct qdio_irq *irq_ptr;
struct ccw_device *cdev = init_data->cdev;
- unsigned long saveflags;
+ struct subchannel_id schid;
+ struct qdio_irq *irq_ptr;
int rc;
- DBF_EVENT("qestablish:%4x", cdev->private->schid.sch_no);
+ ccw_device_get_schid(cdev, &schid);
+ DBF_EVENT("qestablish:%4x", schid.sch_no);
irq_ptr = cdev->private->qdio_data;
if (!irq_ptr)
return -ENODEV;
- if (cdev->private->state != DEV_STATE_ONLINE)
- return -EINVAL;
-
mutex_lock(&irq_ptr->setup_mutex);
qdio_setup_irq(init_data);
@@ -1361,17 +1368,14 @@ int qdio_establish(struct qdio_initialize *init_data)
irq_ptr->ccw.count = irq_ptr->equeue.count;
irq_ptr->ccw.cda = (u32)((addr_t)irq_ptr->qdr);
- spin_lock_irqsave(get_ccwdev_lock(cdev), saveflags);
+ spin_lock_irq(get_ccwdev_lock(cdev));
ccw_device_set_options_mask(cdev, 0);
rc = ccw_device_start(cdev, &irq_ptr->ccw, QDIO_DOING_ESTABLISH, 0, 0);
+ spin_unlock_irq(get_ccwdev_lock(cdev));
if (rc) {
DBF_ERROR("%4x est IO ERR", irq_ptr->schid.sch_no);
DBF_ERROR("rc:%4x", rc);
- }
- spin_unlock_irqrestore(get_ccwdev_lock(cdev), saveflags);
-
- if (rc) {
mutex_unlock(&irq_ptr->setup_mutex);
qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR);
return rc;
@@ -1407,19 +1411,17 @@ EXPORT_SYMBOL_GPL(qdio_establish);
*/
int qdio_activate(struct ccw_device *cdev)
{
+ struct subchannel_id schid;
struct qdio_irq *irq_ptr;
int rc;
- unsigned long saveflags;
- DBF_EVENT("qactivate:%4x", cdev->private->schid.sch_no);
+ ccw_device_get_schid(cdev, &schid);
+ DBF_EVENT("qactivate:%4x", schid.sch_no);
irq_ptr = cdev->private->qdio_data;
if (!irq_ptr)
return -ENODEV;
- if (cdev->private->state != DEV_STATE_ONLINE)
- return -EINVAL;
-
mutex_lock(&irq_ptr->setup_mutex);
if (irq_ptr->state == QDIO_IRQ_STATE_INACTIVE) {
rc = -EBUSY;
@@ -1431,19 +1433,17 @@ int qdio_activate(struct ccw_device *cdev)
irq_ptr->ccw.count = irq_ptr->aqueue.count;
irq_ptr->ccw.cda = 0;
- spin_lock_irqsave(get_ccwdev_lock(cdev), saveflags);
+ spin_lock_irq(get_ccwdev_lock(cdev));
ccw_device_set_options(cdev, CCWDEV_REPORT_ALL);
rc = ccw_device_start(cdev, &irq_ptr->ccw, QDIO_DOING_ACTIVATE,
0, DOIO_DENY_PREFETCH);
+ spin_unlock_irq(get_ccwdev_lock(cdev));
if (rc) {
DBF_ERROR("%4x act IO ERR", irq_ptr->schid.sch_no);
DBF_ERROR("rc:%4x", rc);
- }
- spin_unlock_irqrestore(get_ccwdev_lock(cdev), saveflags);
-
- if (rc)
goto out;
+ }
if (is_thinint_irq(irq_ptr))
tiqdio_add_input_queues(irq_ptr);
@@ -1585,10 +1585,11 @@ static int handle_outbound(struct qdio_q *q, unsigned int callflags,
/* in case of SIGA errors we must process the error immediately */
if (used >= q->u.out.scan_threshold || rc)
- tasklet_schedule(&q->tasklet);
+ qdio_tasklet_schedule(q);
else
/* free the SBALs in case of no further traffic */
- if (!timer_pending(&q->u.out.timer))
+ if (!timer_pending(&q->u.out.timer) &&
+ likely(q->irq_ptr->state == QDIO_IRQ_STATE_ACTIVE))
mod_timer(&q->u.out.timer, jiffies + HZ);
return rc;
}
diff --git a/drivers/s390/virtio/Makefile b/drivers/s390/virtio/Makefile
index 241891a57caf..df40692a9011 100644
--- a/drivers/s390/virtio/Makefile
+++ b/drivers/s390/virtio/Makefile
@@ -6,4 +6,8 @@
# it under the terms of the GNU General Public License (version 2 only)
# as published by the Free Software Foundation.
-obj-$(CONFIG_S390_GUEST) += kvm_virtio.o virtio_ccw.o
+s390-virtio-objs := virtio_ccw.o
+ifdef CONFIG_S390_GUEST_OLD_TRANSPORT
+s390-virtio-objs += kvm_virtio.o
+endif
+obj-$(CONFIG_S390_GUEST) += $(s390-virtio-objs)
diff --git a/drivers/s390/virtio/kvm_virtio.c b/drivers/s390/virtio/kvm_virtio.c
index 1d060fd293a3..5e5c11f37b24 100644
--- a/drivers/s390/virtio/kvm_virtio.c
+++ b/drivers/s390/virtio/kvm_virtio.c
@@ -458,6 +458,8 @@ static int __init kvm_devices_init(void)
if (test_devices_support(total_memory_size) < 0)
return -ENODEV;
+ pr_warn("The s390-virtio transport is deprecated. Please switch to a modern host providing virtio-ccw.\n");
+
rc = vmem_add_mapping(total_memory_size, PAGE_SIZE);
if (rc)
return rc;
@@ -482,7 +484,7 @@ static int __init kvm_devices_init(void)
}
/* code for early console output with virtio_console */
-static __init int early_put_chars(u32 vtermno, const char *buf, int count)
+static int early_put_chars(u32 vtermno, const char *buf, int count)
{
char scratch[17];
unsigned int len = count;
diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig
index 1918f5483b23..7d1b4317eccc 100644
--- a/drivers/scsi/Kconfig
+++ b/drivers/scsi/Kconfig
@@ -838,6 +838,23 @@ config SCSI_IBMVSCSI
To compile this driver as a module, choose M here: the
module will be called ibmvscsi.
+config SCSI_IBMVSCSIS
+ tristate "IBM Virtual SCSI Server support"
+ depends on PPC_PSERIES && TARGET_CORE && SCSI && PCI
+ help
+ This is the IBM POWER Virtual SCSI Target Server
+ This driver uses the SRP protocol for communication betwen servers
+ guest and/or the host that run on the same server.
+ More information on VSCSI protocol can be found at www.power.org
+
+ The userspace configuration needed to initialize the driver can be
+ be found here:
+
+ https://github.com/powervm/ibmvscsis/wiki/Configuration
+
+ To compile this driver as a module, choose M here: the
+ module will be called ibmvscsis.
+
config SCSI_IBMVFC
tristate "IBM Virtual FC support"
depends on PPC_PSERIES && SCSI
diff --git a/drivers/scsi/Makefile b/drivers/scsi/Makefile
index 862ab4efad61..d5397987e731 100644
--- a/drivers/scsi/Makefile
+++ b/drivers/scsi/Makefile
@@ -128,6 +128,7 @@ obj-$(CONFIG_SCSI_SNI_53C710) += 53c700.o sni_53c710.o
obj-$(CONFIG_SCSI_NSP32) += nsp32.o
obj-$(CONFIG_SCSI_IPR) += ipr.o
obj-$(CONFIG_SCSI_IBMVSCSI) += ibmvscsi/
+obj-$(CONFIG_SCSI_IBMVSCSIS) += ibmvscsi_tgt/
obj-$(CONFIG_SCSI_IBMVFC) += ibmvscsi/
obj-$(CONFIG_SCSI_HPTIOP) += hptiop.o
obj-$(CONFIG_SCSI_STEX) += stex.o
diff --git a/drivers/scsi/cxlflash/main.c b/drivers/scsi/cxlflash/main.c
index 860008d42466..661bb94e2548 100644
--- a/drivers/scsi/cxlflash/main.c
+++ b/drivers/scsi/cxlflash/main.c
@@ -778,7 +778,7 @@ static void notify_shutdown(struct cxlflash_cfg *cfg, bool wait)
{
struct afu *afu = cfg->afu;
struct device *dev = &cfg->dev->dev;
- struct sisl_global_map __iomem *global = &afu->afu_map->global;
+ struct sisl_global_map __iomem *global;
struct dev_dependent_vals *ddv;
u64 reg, status;
int i, retry_cnt = 0;
@@ -787,6 +787,14 @@ static void notify_shutdown(struct cxlflash_cfg *cfg, bool wait)
if (!(ddv->flags & CXLFLASH_NOTIFY_SHUTDOWN))
return;
+ if (!afu || !afu->afu_map) {
+ dev_dbg(dev, "%s: The problem state area is not mapped\n",
+ __func__);
+ return;
+ }
+
+ global = &afu->afu_map->global;
+
/* Notify AFU */
for (i = 0; i < NUM_FC_PORTS; i++) {
reg = readq_be(&global->fc_regs[i][FC_CONFIG2 / 8]);
diff --git a/drivers/scsi/fcoe/fcoe.c b/drivers/scsi/fcoe/fcoe.c
index c8a4305c7662..9bd41a35a78a 100644
--- a/drivers/scsi/fcoe/fcoe.c
+++ b/drivers/scsi/fcoe/fcoe.c
@@ -92,6 +92,8 @@ static struct fcoe_interface
static int fcoe_fip_recv(struct sk_buff *, struct net_device *,
struct packet_type *, struct net_device *);
+static int fcoe_fip_vlan_recv(struct sk_buff *, struct net_device *,
+ struct packet_type *, struct net_device *);
static void fcoe_fip_send(struct fcoe_ctlr *, struct sk_buff *);
static void fcoe_update_src_mac(struct fc_lport *, u8 *);
@@ -363,6 +365,12 @@ static int fcoe_interface_setup(struct fcoe_interface *fcoe,
fcoe->fip_packet_type.dev = netdev;
dev_add_pack(&fcoe->fip_packet_type);
+ if (netdev != real_dev) {
+ fcoe->fip_vlan_packet_type.func = fcoe_fip_vlan_recv;
+ fcoe->fip_vlan_packet_type.type = htons(ETH_P_FIP);
+ fcoe->fip_vlan_packet_type.dev = real_dev;
+ dev_add_pack(&fcoe->fip_vlan_packet_type);
+ }
return 0;
}
@@ -450,6 +458,8 @@ static void fcoe_interface_remove(struct fcoe_interface *fcoe)
*/
__dev_remove_pack(&fcoe->fcoe_packet_type);
__dev_remove_pack(&fcoe->fip_packet_type);
+ if (netdev != fcoe->realdev)
+ __dev_remove_pack(&fcoe->fip_vlan_packet_type);
synchronize_net();
/* Delete secondary MAC addresses */
@@ -520,6 +530,29 @@ static int fcoe_fip_recv(struct sk_buff *skb, struct net_device *netdev,
}
/**
+ * fcoe_fip_vlan_recv() - Handler for received FIP VLAN discovery frames
+ * @skb: The receive skb
+ * @netdev: The associated net device
+ * @ptype: The packet_type structure which was used to register this handler
+ * @orig_dev: The original net_device the the skb was received on.
+ * (in case dev is a bond)
+ *
+ * Returns: 0 for success
+ */
+static int fcoe_fip_vlan_recv(struct sk_buff *skb, struct net_device *netdev,
+ struct packet_type *ptype,
+ struct net_device *orig_dev)
+{
+ struct fcoe_interface *fcoe;
+ struct fcoe_ctlr *ctlr;
+
+ fcoe = container_of(ptype, struct fcoe_interface, fip_vlan_packet_type);
+ ctlr = fcoe_to_ctlr(fcoe);
+ fcoe_ctlr_recv(ctlr, skb);
+ return 0;
+}
+
+/**
* fcoe_port_send() - Send an Ethernet-encapsulated FIP/FCoE frame
* @port: The FCoE port
* @skb: The FIP/FCoE packet to be sent
@@ -539,7 +572,21 @@ static void fcoe_port_send(struct fcoe_port *port, struct sk_buff *skb)
*/
static void fcoe_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb)
{
- skb->dev = fcoe_from_ctlr(fip)->netdev;
+ struct fcoe_interface *fcoe = fcoe_from_ctlr(fip);
+ struct fip_frame {
+ struct ethhdr eth;
+ struct fip_header fip;
+ } __packed *frame;
+
+ /*
+ * Use default VLAN for FIP VLAN discovery protocol
+ */
+ frame = (struct fip_frame *)skb->data;
+ if (frame->fip.fip_op == ntohs(FIP_OP_VLAN) &&
+ fcoe->realdev != fcoe->netdev)
+ skb->dev = fcoe->realdev;
+ else
+ skb->dev = fcoe->netdev;
fcoe_port_send(lport_priv(fip->lp), skb);
}
@@ -2448,7 +2495,7 @@ static int __init fcoe_init(void)
if (rc) {
printk(KERN_ERR "failed to register an fcoe transport, check "
"if libfcoe is loaded\n");
- return rc;
+ goto out_destroy;
}
mutex_lock(&fcoe_config_mutex);
@@ -2471,6 +2518,7 @@ static int __init fcoe_init(void)
out_free:
mutex_unlock(&fcoe_config_mutex);
+out_destroy:
destroy_workqueue(fcoe_wq);
return rc;
}
diff --git a/drivers/scsi/fcoe/fcoe.h b/drivers/scsi/fcoe/fcoe.h
index 2b53672bf932..6aa4820f6cc0 100644
--- a/drivers/scsi/fcoe/fcoe.h
+++ b/drivers/scsi/fcoe/fcoe.h
@@ -80,6 +80,7 @@ struct fcoe_interface {
struct net_device *realdev;
struct packet_type fcoe_packet_type;
struct packet_type fip_packet_type;
+ struct packet_type fip_vlan_packet_type;
struct fc_exch_mgr *oem;
u8 removed;
u8 priority;
diff --git a/drivers/scsi/ibmvscsi/ibmvfc.h b/drivers/scsi/ibmvscsi/ibmvfc.h
index 8fae03215a85..5c70a52ad346 100644
--- a/drivers/scsi/ibmvscsi/ibmvfc.h
+++ b/drivers/scsi/ibmvscsi/ibmvfc.h
@@ -26,7 +26,7 @@
#include <linux/list.h>
#include <linux/types.h>
-#include "viosrp.h"
+#include <scsi/viosrp.h>
#define IBMVFC_NAME "ibmvfc"
#define IBMVFC_DRIVER_VERSION "1.0.11"
diff --git a/drivers/scsi/ibmvscsi/ibmvscsi.h b/drivers/scsi/ibmvscsi/ibmvscsi.h
index 1067367395cd..e0f6c3aeb4ee 100644
--- a/drivers/scsi/ibmvscsi/ibmvscsi.h
+++ b/drivers/scsi/ibmvscsi/ibmvscsi.h
@@ -33,7 +33,7 @@
#include <linux/list.h>
#include <linux/completion.h>
#include <linux/interrupt.h>
-#include "viosrp.h"
+#include <scsi/viosrp.h>
struct scsi_cmnd;
struct Scsi_Host;
diff --git a/drivers/scsi/ibmvscsi/viosrp.h b/drivers/scsi/ibmvscsi/viosrp.h
deleted file mode 100644
index c1ab8a4c3161..000000000000
--- a/drivers/scsi/ibmvscsi/viosrp.h
+++ /dev/null
@@ -1,225 +0,0 @@
-/*****************************************************************************/
-/* srp.h -- SCSI RDMA Protocol definitions */
-/* */
-/* Written By: Colin Devilbis, IBM Corporation */
-/* */
-/* Copyright (C) 2003 IBM Corporation */
-/* */
-/* This program is free software; you can redistribute it and/or modify */
-/* it under the terms of the GNU General Public License as published by */
-/* the Free Software Foundation; either version 2 of the License, or */
-/* (at your option) any later version. */
-/* */
-/* This program is distributed in the hope that it will be useful, */
-/* but WITHOUT ANY WARRANTY; without even the implied warranty of */
-/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */
-/* GNU General Public License for more details. */
-/* */
-/* You should have received a copy of the GNU General Public License */
-/* along with this program; if not, write to the Free Software */
-/* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
-/* */
-/* */
-/* This file contains structures and definitions for IBM RPA (RS/6000 */
-/* platform architecture) implementation of the SRP (SCSI RDMA Protocol) */
-/* standard. SRP is used on IBM iSeries and pSeries platforms to send SCSI */
-/* commands between logical partitions. */
-/* */
-/* SRP Information Units (IUs) are sent on a "Command/Response Queue" (CRQ) */
-/* between partitions. The definitions in this file are architected, */
-/* and cannot be changed without breaking compatibility with other versions */
-/* of Linux and other operating systems (AIX, OS/400) that talk this protocol*/
-/* between logical partitions */
-/*****************************************************************************/
-#ifndef VIOSRP_H
-#define VIOSRP_H
-#include <scsi/srp.h>
-
-#define SRP_VERSION "16.a"
-#define SRP_MAX_IU_LEN 256
-#define SRP_MAX_LOC_LEN 32
-
-union srp_iu {
- struct srp_login_req login_req;
- struct srp_login_rsp login_rsp;
- struct srp_login_rej login_rej;
- struct srp_i_logout i_logout;
- struct srp_t_logout t_logout;
- struct srp_tsk_mgmt tsk_mgmt;
- struct srp_cmd cmd;
- struct srp_rsp rsp;
- u8 reserved[SRP_MAX_IU_LEN];
-};
-
-enum viosrp_crq_headers {
- VIOSRP_CRQ_FREE = 0x00,
- VIOSRP_CRQ_CMD_RSP = 0x80,
- VIOSRP_CRQ_INIT_RSP = 0xC0,
- VIOSRP_CRQ_XPORT_EVENT = 0xFF
-};
-
-enum viosrp_crq_init_formats {
- VIOSRP_CRQ_INIT = 0x01,
- VIOSRP_CRQ_INIT_COMPLETE = 0x02
-};
-
-enum viosrp_crq_formats {
- VIOSRP_SRP_FORMAT = 0x01,
- VIOSRP_MAD_FORMAT = 0x02,
- VIOSRP_OS400_FORMAT = 0x03,
- VIOSRP_AIX_FORMAT = 0x04,
- VIOSRP_LINUX_FORMAT = 0x05,
- VIOSRP_INLINE_FORMAT = 0x06
-};
-
-enum viosrp_crq_status {
- VIOSRP_OK = 0x0,
- VIOSRP_NONRECOVERABLE_ERR = 0x1,
- VIOSRP_VIOLATES_MAX_XFER = 0x2,
- VIOSRP_PARTNER_PANIC = 0x3,
- VIOSRP_DEVICE_BUSY = 0x8,
- VIOSRP_ADAPTER_FAIL = 0x10,
- VIOSRP_OK2 = 0x99,
-};
-
-struct viosrp_crq {
- u8 valid; /* used by RPA */
- u8 format; /* SCSI vs out-of-band */
- u8 reserved;
- u8 status; /* non-scsi failure? (e.g. DMA failure) */
- __be16 timeout; /* in seconds */
- __be16 IU_length; /* in bytes */
- __be64 IU_data_ptr; /* the TCE for transferring data */
-};
-
-/* MADs are Management requests above and beyond the IUs defined in the SRP
- * standard.
- */
-enum viosrp_mad_types {
- VIOSRP_EMPTY_IU_TYPE = 0x01,
- VIOSRP_ERROR_LOG_TYPE = 0x02,
- VIOSRP_ADAPTER_INFO_TYPE = 0x03,
- VIOSRP_CAPABILITIES_TYPE = 0x05,
- VIOSRP_ENABLE_FAST_FAIL = 0x08,
-};
-
-enum viosrp_mad_status {
- VIOSRP_MAD_SUCCESS = 0x00,
- VIOSRP_MAD_NOT_SUPPORTED = 0xF1,
- VIOSRP_MAD_FAILED = 0xF7,
-};
-
-enum viosrp_capability_type {
- MIGRATION_CAPABILITIES = 0x01,
- RESERVATION_CAPABILITIES = 0x02,
-};
-
-enum viosrp_capability_support {
- SERVER_DOES_NOT_SUPPORTS_CAP = 0x0,
- SERVER_SUPPORTS_CAP = 0x01,
- SERVER_CAP_DATA = 0x02,
-};
-
-enum viosrp_reserve_type {
- CLIENT_RESERVE_SCSI_2 = 0x01,
-};
-
-enum viosrp_capability_flag {
- CLIENT_MIGRATED = 0x01,
- CLIENT_RECONNECT = 0x02,
- CAP_LIST_SUPPORTED = 0x04,
- CAP_LIST_DATA = 0x08,
-};
-
-/*
- * Common MAD header
- */
-struct mad_common {
- __be32 type;
- __be16 status;
- __be16 length;
- __be64 tag;
-};
-
-/*
- * All SRP (and MAD) requests normally flow from the
- * client to the server. There is no way for the server to send
- * an asynchronous message back to the client. The Empty IU is used
- * to hang out a meaningless request to the server so that it can respond
- * asynchrouously with something like a SCSI AER
- */
-struct viosrp_empty_iu {
- struct mad_common common;
- __be64 buffer;
- __be32 port;
-};
-
-struct viosrp_error_log {
- struct mad_common common;
- __be64 buffer;
-};
-
-struct viosrp_adapter_info {
- struct mad_common common;
- __be64 buffer;
-};
-
-struct viosrp_fast_fail {
- struct mad_common common;
-};
-
-struct viosrp_capabilities {
- struct mad_common common;
- __be64 buffer;
-};
-
-struct mad_capability_common {
- __be32 cap_type;
- __be16 length;
- __be16 server_support;
-};
-
-struct mad_reserve_cap {
- struct mad_capability_common common;
- __be32 type;
-};
-
-struct mad_migration_cap {
- struct mad_capability_common common;
- __be32 ecl;
-};
-
-struct capabilities{
- __be32 flags;
- char name[SRP_MAX_LOC_LEN];
- char loc[SRP_MAX_LOC_LEN];
- struct mad_migration_cap migration;
- struct mad_reserve_cap reserve;
-};
-
-union mad_iu {
- struct viosrp_empty_iu empty_iu;
- struct viosrp_error_log error_log;
- struct viosrp_adapter_info adapter_info;
- struct viosrp_fast_fail fast_fail;
- struct viosrp_capabilities capabilities;
-};
-
-union viosrp_iu {
- union srp_iu srp;
- union mad_iu mad;
-};
-
-struct mad_adapter_info_data {
- char srp_version[8];
- char partition_name[96];
- __be32 partition_number;
-#define SRP_MAD_VERSION_1 1
- __be32 mad_version;
-#define SRP_MAD_OS_LINUX 2
-#define SRP_MAD_OS_AIX 3
- __be32 os_type;
- __be32 port_max_txu[8]; /* per-port maximum transfer */
-};
-
-#endif
diff --git a/drivers/scsi/ibmvscsi_tgt/Makefile b/drivers/scsi/ibmvscsi_tgt/Makefile
new file mode 100644
index 000000000000..0c060ce64cb0
--- /dev/null
+++ b/drivers/scsi/ibmvscsi_tgt/Makefile
@@ -0,0 +1,3 @@
+obj-$(CONFIG_SCSI_IBMVSCSIS) += ibmvscsis.o
+
+ibmvscsis-y := libsrp.o ibmvscsi_tgt.o
diff --git a/drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c b/drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c
new file mode 100644
index 000000000000..b29fef9d0f27
--- /dev/null
+++ b/drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c
@@ -0,0 +1,4087 @@
+/*******************************************************************************
+ * IBM Virtual SCSI Target Driver
+ * Copyright (C) 2003-2005 Dave Boutcher (boutcher@us.ibm.com) IBM Corp.
+ * Santiago Leon (santil@us.ibm.com) IBM Corp.
+ * Linda Xie (lxie@us.ibm.com) IBM Corp.
+ *
+ * Copyright (C) 2005-2011 FUJITA Tomonori <tomof@acm.org>
+ * Copyright (C) 2010 Nicholas A. Bellinger <nab@kernel.org>
+ *
+ * Authors: Bryant G. Ly <bryantly@linux.vnet.ibm.com>
+ * Authors: Michael Cyr <mikecyr@linux.vnet.ibm.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ ****************************************************************************/
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/list.h>
+#include <linux/string.h>
+
+#include <target/target_core_base.h>
+#include <target/target_core_fabric.h>
+
+#include <asm/hvcall.h>
+#include <asm/vio.h>
+
+#include <scsi/viosrp.h>
+
+#include "ibmvscsi_tgt.h"
+
+#define IBMVSCSIS_VERSION "v0.2"
+
+#define INITIAL_SRP_LIMIT 800
+#define DEFAULT_MAX_SECTORS 256
+
+static uint max_vdma_size = MAX_H_COPY_RDMA;
+
+static char system_id[SYS_ID_NAME_LEN] = "";
+static char partition_name[PARTITION_NAMELEN] = "UNKNOWN";
+static uint partition_number = -1;
+
+/* Adapter list and lock to control it */
+static DEFINE_SPINLOCK(ibmvscsis_dev_lock);
+static LIST_HEAD(ibmvscsis_dev_list);
+
+static long ibmvscsis_parse_command(struct scsi_info *vscsi,
+ struct viosrp_crq *crq);
+
+static void ibmvscsis_adapter_idle(struct scsi_info *vscsi);
+
+static void ibmvscsis_determine_resid(struct se_cmd *se_cmd,
+ struct srp_rsp *rsp)
+{
+ u32 residual_count = se_cmd->residual_count;
+
+ if (!residual_count)
+ return;
+
+ if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) {
+ if (se_cmd->data_direction == DMA_TO_DEVICE) {
+ /* residual data from an underflow write */
+ rsp->flags = SRP_RSP_FLAG_DOUNDER;
+ rsp->data_out_res_cnt = cpu_to_be32(residual_count);
+ } else if (se_cmd->data_direction == DMA_FROM_DEVICE) {
+ /* residual data from an underflow read */
+ rsp->flags = SRP_RSP_FLAG_DIUNDER;
+ rsp->data_in_res_cnt = cpu_to_be32(residual_count);
+ }
+ } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
+ if (se_cmd->data_direction == DMA_TO_DEVICE) {
+ /* residual data from an overflow write */
+ rsp->flags = SRP_RSP_FLAG_DOOVER;
+ rsp->data_out_res_cnt = cpu_to_be32(residual_count);
+ } else if (se_cmd->data_direction == DMA_FROM_DEVICE) {
+ /* residual data from an overflow read */
+ rsp->flags = SRP_RSP_FLAG_DIOVER;
+ rsp->data_in_res_cnt = cpu_to_be32(residual_count);
+ }
+ }
+}
+
+/**
+ * connection_broken() - Determine if the connection to the client is good
+ * @vscsi: Pointer to our adapter structure
+ *
+ * This function attempts to send a ping MAD to the client. If the call to
+ * queue the request returns H_CLOSED then the connection has been broken
+ * and the function returns TRUE.
+ *
+ * EXECUTION ENVIRONMENT:
+ * Interrupt or Process environment
+ */
+static bool connection_broken(struct scsi_info *vscsi)
+{
+ struct viosrp_crq *crq;
+ u64 buffer[2] = { 0, 0 };
+ long h_return_code;
+ bool rc = false;
+
+ /* create a PING crq */
+ crq = (struct viosrp_crq *)&buffer;
+ crq->valid = VALID_CMD_RESP_EL;
+ crq->format = MESSAGE_IN_CRQ;
+ crq->status = PING;
+
+ h_return_code = h_send_crq(vscsi->dds.unit_id,
+ cpu_to_be64(buffer[MSG_HI]),
+ cpu_to_be64(buffer[MSG_LOW]));
+
+ pr_debug("connection_broken: rc %ld\n", h_return_code);
+
+ if (h_return_code == H_CLOSED)
+ rc = true;
+
+ return rc;
+}
+
+/**
+ * ibmvscsis_unregister_command_q() - Helper Function-Unregister Command Queue
+ * @vscsi: Pointer to our adapter structure
+ *
+ * This function calls h_free_q then frees the interrupt bit etc.
+ * It must release the lock before doing so because of the time it can take
+ * for h_free_crq in PHYP
+ * NOTE: the caller must make sure that state and or flags will prevent
+ * interrupt handler from scheduling work.
+ * NOTE: anyone calling this function may need to set the CRQ_CLOSED flag
+ * we can't do it here, because we don't have the lock
+ *
+ * EXECUTION ENVIRONMENT:
+ * Process level
+ */
+static long ibmvscsis_unregister_command_q(struct scsi_info *vscsi)
+{
+ long qrc;
+ long rc = ADAPT_SUCCESS;
+ int ticks = 0;
+
+ do {
+ qrc = h_free_crq(vscsi->dds.unit_id);
+ switch (qrc) {
+ case H_SUCCESS:
+ break;
+
+ case H_HARDWARE:
+ case H_PARAMETER:
+ dev_err(&vscsi->dev, "unregister_command_q: error from h_free_crq %ld\n",
+ qrc);
+ rc = ERROR;
+ break;
+
+ case H_BUSY:
+ case H_LONG_BUSY_ORDER_1_MSEC:
+ /* msleep not good for small values */
+ usleep_range(1000, 2000);
+ ticks += 1;
+ break;
+ case H_LONG_BUSY_ORDER_10_MSEC:
+ usleep_range(10000, 20000);
+ ticks += 10;
+ break;
+ case H_LONG_BUSY_ORDER_100_MSEC:
+ msleep(100);
+ ticks += 100;
+ break;
+ case H_LONG_BUSY_ORDER_1_SEC:
+ ssleep(1);
+ ticks += 1000;
+ break;
+ case H_LONG_BUSY_ORDER_10_SEC:
+ ssleep(10);
+ ticks += 10000;
+ break;
+ case H_LONG_BUSY_ORDER_100_SEC:
+ ssleep(100);
+ ticks += 100000;
+ break;
+ default:
+ dev_err(&vscsi->dev, "unregister_command_q: unknown error %ld from h_free_crq\n",
+ qrc);
+ rc = ERROR;
+ break;
+ }
+
+ /*
+ * dont wait more then 300 seconds
+ * ticks are in milliseconds more or less
+ */
+ if (ticks > 300000 && qrc != H_SUCCESS) {
+ rc = ERROR;
+ dev_err(&vscsi->dev, "Excessive wait for h_free_crq\n");
+ }
+ } while (qrc != H_SUCCESS && rc == ADAPT_SUCCESS);
+
+ pr_debug("Freeing CRQ: phyp rc %ld, rc %ld\n", qrc, rc);
+
+ return rc;
+}
+
+/**
+ * ibmvscsis_delete_client_info() - Helper function to Delete Client Info
+ * @vscsi: Pointer to our adapter structure
+ * @client_closed: True if client closed its queue
+ *
+ * Deletes information specific to the client when the client goes away
+ *
+ * EXECUTION ENVIRONMENT:
+ * Interrupt or Process
+ */
+static void ibmvscsis_delete_client_info(struct scsi_info *vscsi,
+ bool client_closed)
+{
+ vscsi->client_cap = 0;
+
+ /*
+ * Some things we don't want to clear if we're closing the queue,
+ * because some clients don't resend the host handshake when they
+ * get a transport event.
+ */
+ if (client_closed)
+ vscsi->client_data.os_type = 0;
+}
+
+/**
+ * ibmvscsis_free_command_q() - Free Command Queue
+ * @vscsi: Pointer to our adapter structure
+ *
+ * This function calls unregister_command_q, then clears interrupts and
+ * any pending interrupt acknowledgments associated with the command q.
+ * It also clears memory if there is no error.
+ *
+ * PHYP did not meet the PAPR architecture so that we must give up the
+ * lock. This causes a timing hole regarding state change. To close the
+ * hole this routine does accounting on any change that occurred during
+ * the time the lock is not held.
+ * NOTE: must give up and then acquire the interrupt lock, the caller must
+ * make sure that state and or flags will prevent interrupt handler from
+ * scheduling work.
+ *
+ * EXECUTION ENVIRONMENT:
+ * Process level, interrupt lock is held
+ */
+static long ibmvscsis_free_command_q(struct scsi_info *vscsi)
+{
+ int bytes;
+ u32 flags_under_lock;
+ u16 state_under_lock;
+ long rc = ADAPT_SUCCESS;
+
+ if (!(vscsi->flags & CRQ_CLOSED)) {
+ vio_disable_interrupts(vscsi->dma_dev);
+
+ state_under_lock = vscsi->new_state;
+ flags_under_lock = vscsi->flags;
+ vscsi->phyp_acr_state = 0;
+ vscsi->phyp_acr_flags = 0;
+
+ spin_unlock_bh(&vscsi->intr_lock);
+ rc = ibmvscsis_unregister_command_q(vscsi);
+ spin_lock_bh(&vscsi->intr_lock);
+
+ if (state_under_lock != vscsi->new_state)
+ vscsi->phyp_acr_state = vscsi->new_state;
+
+ vscsi->phyp_acr_flags = ((~flags_under_lock) & vscsi->flags);
+
+ if (rc == ADAPT_SUCCESS) {
+ bytes = vscsi->cmd_q.size * PAGE_SIZE;
+ memset(vscsi->cmd_q.base_addr, 0, bytes);
+ vscsi->cmd_q.index = 0;
+ vscsi->flags |= CRQ_CLOSED;
+
+ ibmvscsis_delete_client_info(vscsi, false);
+ }
+
+ pr_debug("free_command_q: flags 0x%x, state 0x%hx, acr_flags 0x%x, acr_state 0x%hx\n",
+ vscsi->flags, vscsi->state, vscsi->phyp_acr_flags,
+ vscsi->phyp_acr_state);
+ }
+ return rc;
+}
+
+/**
+ * ibmvscsis_cmd_q_dequeue() - Get valid Command element
+ * @mask: Mask to use in case index wraps
+ * @current_index: Current index into command queue
+ * @base_addr: Pointer to start of command queue
+ *
+ * Returns a pointer to a valid command element or NULL, if the command
+ * queue is empty
+ *
+ * EXECUTION ENVIRONMENT:
+ * Interrupt environment, interrupt lock held
+ */
+static struct viosrp_crq *ibmvscsis_cmd_q_dequeue(uint mask,
+ uint *current_index,
+ struct viosrp_crq *base_addr)
+{
+ struct viosrp_crq *ptr;
+
+ ptr = base_addr + *current_index;
+
+ if (ptr->valid) {
+ *current_index = (*current_index + 1) & mask;
+ dma_rmb();
+ } else {
+ ptr = NULL;
+ }
+
+ return ptr;
+}
+
+/**
+ * ibmvscsis_send_init_message() - send initialize message to the client
+ * @vscsi: Pointer to our adapter structure
+ * @format: Which Init Message format to send
+ *
+ * EXECUTION ENVIRONMENT:
+ * Interrupt environment interrupt lock held
+ */
+static long ibmvscsis_send_init_message(struct scsi_info *vscsi, u8 format)
+{
+ struct viosrp_crq *crq;
+ u64 buffer[2] = { 0, 0 };
+ long rc;
+
+ crq = (struct viosrp_crq *)&buffer;
+ crq->valid = VALID_INIT_MSG;
+ crq->format = format;
+ rc = h_send_crq(vscsi->dds.unit_id, cpu_to_be64(buffer[MSG_HI]),
+ cpu_to_be64(buffer[MSG_LOW]));
+
+ return rc;
+}
+
+/**
+ * ibmvscsis_check_init_msg() - Check init message valid
+ * @vscsi: Pointer to our adapter structure
+ * @format: Pointer to return format of Init Message, if any.
+ * Set to UNUSED_FORMAT if no Init Message in queue.
+ *
+ * Checks if an initialize message was queued by the initiatior
+ * after the queue was created and before the interrupt was enabled.
+ *
+ * EXECUTION ENVIRONMENT:
+ * Process level only, interrupt lock held
+ */
+static long ibmvscsis_check_init_msg(struct scsi_info *vscsi, uint *format)
+{
+ struct viosrp_crq *crq;
+ long rc = ADAPT_SUCCESS;
+
+ crq = ibmvscsis_cmd_q_dequeue(vscsi->cmd_q.mask, &vscsi->cmd_q.index,
+ vscsi->cmd_q.base_addr);
+ if (!crq) {
+ *format = (uint)UNUSED_FORMAT;
+ } else if (crq->valid == VALID_INIT_MSG && crq->format == INIT_MSG) {
+ *format = (uint)INIT_MSG;
+ crq->valid = INVALIDATE_CMD_RESP_EL;
+ dma_rmb();
+
+ /*
+ * the caller has ensured no initialize message was
+ * sent after the queue was
+ * created so there should be no other message on the queue.
+ */
+ crq = ibmvscsis_cmd_q_dequeue(vscsi->cmd_q.mask,
+ &vscsi->cmd_q.index,
+ vscsi->cmd_q.base_addr);
+ if (crq) {
+ *format = (uint)(crq->format);
+ rc = ERROR;
+ crq->valid = INVALIDATE_CMD_RESP_EL;
+ dma_rmb();
+ }
+ } else {
+ *format = (uint)(crq->format);
+ rc = ERROR;
+ crq->valid = INVALIDATE_CMD_RESP_EL;
+ dma_rmb();
+ }
+
+ return rc;
+}
+
+/**
+ * ibmvscsis_establish_new_q() - Establish new CRQ queue
+ * @vscsi: Pointer to our adapter structure
+ * @new_state: New state being established after resetting the queue
+ *
+ * Must be called with interrupt lock held.
+ */
+static long ibmvscsis_establish_new_q(struct scsi_info *vscsi, uint new_state)
+{
+ long rc = ADAPT_SUCCESS;
+ uint format;
+
+ vscsi->flags &= PRESERVE_FLAG_FIELDS;
+ vscsi->rsp_q_timer.timer_pops = 0;
+ vscsi->debit = 0;
+ vscsi->credit = 0;
+
+ rc = vio_enable_interrupts(vscsi->dma_dev);
+ if (rc) {
+ pr_warn("reset_queue: failed to enable interrupts, rc %ld\n",
+ rc);
+ return rc;
+ }
+
+ rc = ibmvscsis_check_init_msg(vscsi, &format);
+ if (rc) {
+ dev_err(&vscsi->dev, "reset_queue: check_init_msg failed, rc %ld\n",
+ rc);
+ return rc;
+ }
+
+ if (format == UNUSED_FORMAT && new_state == WAIT_CONNECTION) {
+ rc = ibmvscsis_send_init_message(vscsi, INIT_MSG);
+ switch (rc) {
+ case H_SUCCESS:
+ case H_DROPPED:
+ case H_CLOSED:
+ rc = ADAPT_SUCCESS;
+ break;
+
+ case H_PARAMETER:
+ case H_HARDWARE:
+ break;
+
+ default:
+ vscsi->state = UNDEFINED;
+ rc = H_HARDWARE;
+ break;
+ }
+ }
+
+ return rc;
+}
+
+/**
+ * ibmvscsis_reset_queue() - Reset CRQ Queue
+ * @vscsi: Pointer to our adapter structure
+ * @new_state: New state to establish after resetting the queue
+ *
+ * This function calls h_free_q and then calls h_reg_q and does all
+ * of the bookkeeping to get us back to where we can communicate.
+ *
+ * Actually, we don't always call h_free_crq. A problem was discovered
+ * where one partition would close and reopen his queue, which would
+ * cause his partner to get a transport event, which would cause him to
+ * close and reopen his queue, which would cause the original partition
+ * to get a transport event, etc., etc. To prevent this, we don't
+ * actually close our queue if the client initiated the reset, (i.e.
+ * either we got a transport event or we have detected that the client's
+ * queue is gone)
+ *
+ * EXECUTION ENVIRONMENT:
+ * Process environment, called with interrupt lock held
+ */
+static void ibmvscsis_reset_queue(struct scsi_info *vscsi, uint new_state)
+{
+ int bytes;
+ long rc = ADAPT_SUCCESS;
+
+ pr_debug("reset_queue: flags 0x%x\n", vscsi->flags);
+
+ /* don't reset, the client did it for us */
+ if (vscsi->flags & (CLIENT_FAILED | TRANS_EVENT)) {
+ vscsi->flags &= PRESERVE_FLAG_FIELDS;
+ vscsi->rsp_q_timer.timer_pops = 0;
+ vscsi->debit = 0;
+ vscsi->credit = 0;
+ vscsi->state = new_state;
+ vio_enable_interrupts(vscsi->dma_dev);
+ } else {
+ rc = ibmvscsis_free_command_q(vscsi);
+ if (rc == ADAPT_SUCCESS) {
+ vscsi->state = new_state;
+
+ bytes = vscsi->cmd_q.size * PAGE_SIZE;
+ rc = h_reg_crq(vscsi->dds.unit_id,
+ vscsi->cmd_q.crq_token, bytes);
+ if (rc == H_CLOSED || rc == H_SUCCESS) {
+ rc = ibmvscsis_establish_new_q(vscsi,
+ new_state);
+ }
+
+ if (rc != ADAPT_SUCCESS) {
+ pr_debug("reset_queue: reg_crq rc %ld\n", rc);
+
+ vscsi->state = ERR_DISCONNECTED;
+ vscsi->flags |= RESPONSE_Q_DOWN;
+ ibmvscsis_free_command_q(vscsi);
+ }
+ } else {
+ vscsi->state = ERR_DISCONNECTED;
+ vscsi->flags |= RESPONSE_Q_DOWN;
+ }
+ }
+}
+
+/**
+ * ibmvscsis_free_cmd_resources() - Free command resources
+ * @vscsi: Pointer to our adapter structure
+ * @cmd: Command which is not longer in use
+ *
+ * Must be called with interrupt lock held.
+ */
+static void ibmvscsis_free_cmd_resources(struct scsi_info *vscsi,
+ struct ibmvscsis_cmd *cmd)
+{
+ struct iu_entry *iue = cmd->iue;
+
+ switch (cmd->type) {
+ case TASK_MANAGEMENT:
+ case SCSI_CDB:
+ /*
+ * When the queue goes down this value is cleared, so it
+ * cannot be cleared in this general purpose function.
+ */
+ if (vscsi->debit)
+ vscsi->debit -= 1;
+ break;
+ case ADAPTER_MAD:
+ vscsi->flags &= ~PROCESSING_MAD;
+ break;
+ case UNSET_TYPE:
+ break;
+ default:
+ dev_err(&vscsi->dev, "free_cmd_resources unknown type %d\n",
+ cmd->type);
+ break;
+ }
+
+ cmd->iue = NULL;
+ list_add_tail(&cmd->list, &vscsi->free_cmd);
+ srp_iu_put(iue);
+
+ if (list_empty(&vscsi->active_q) && list_empty(&vscsi->schedule_q) &&
+ list_empty(&vscsi->waiting_rsp) && (vscsi->flags & WAIT_FOR_IDLE)) {
+ vscsi->flags &= ~WAIT_FOR_IDLE;
+ complete(&vscsi->wait_idle);
+ }
+}
+
+/**
+ * ibmvscsis_disconnect() - Helper function to disconnect
+ * @work: Pointer to work_struct, gives access to our adapter structure
+ *
+ * An error has occurred or the driver received a Transport event,
+ * and the driver is requesting that the command queue be de-registered
+ * in a safe manner. If there is no outstanding I/O then we can stop the
+ * queue. If we are restarting the queue it will be reflected in the
+ * the state of the adapter.
+ *
+ * EXECUTION ENVIRONMENT:
+ * Process environment
+ */
+static void ibmvscsis_disconnect(struct work_struct *work)
+{
+ struct scsi_info *vscsi = container_of(work, struct scsi_info,
+ proc_work);
+ u16 new_state;
+ bool wait_idle = false;
+ long rc = ADAPT_SUCCESS;
+
+ spin_lock_bh(&vscsi->intr_lock);
+ new_state = vscsi->new_state;
+ vscsi->new_state = 0;
+
+ pr_debug("disconnect: flags 0x%x, state 0x%hx\n", vscsi->flags,
+ vscsi->state);
+
+ /*
+ * check which state we are in and see if we
+ * should transitition to the new state
+ */
+ switch (vscsi->state) {
+ /* Should never be called while in this state. */
+ case NO_QUEUE:
+ /*
+ * Can never transition from this state;
+ * igonore errors and logout.
+ */
+ case UNCONFIGURING:
+ break;
+
+ /* can transition from this state to UNCONFIGURING */
+ case ERR_DISCONNECT:
+ if (new_state == UNCONFIGURING)
+ vscsi->state = new_state;
+ break;
+
+ /*
+ * Can transition from this state to to unconfiguring
+ * or err disconnect.
+ */
+ case ERR_DISCONNECT_RECONNECT:
+ switch (new_state) {
+ case UNCONFIGURING:
+ case ERR_DISCONNECT:
+ vscsi->state = new_state;
+ break;
+
+ case WAIT_IDLE:
+ break;
+ default:
+ break;
+ }
+ break;
+
+ /* can transition from this state to UNCONFIGURING */
+ case ERR_DISCONNECTED:
+ if (new_state == UNCONFIGURING)
+ vscsi->state = new_state;
+ break;
+
+ /*
+ * If this is a transition into an error state.
+ * a client is attempting to establish a connection
+ * and has violated the RPA protocol.
+ * There can be nothing pending on the adapter although
+ * there can be requests in the command queue.
+ */
+ case WAIT_ENABLED:
+ case PART_UP_WAIT_ENAB:
+ switch (new_state) {
+ case ERR_DISCONNECT:
+ vscsi->flags |= RESPONSE_Q_DOWN;
+ vscsi->state = new_state;
+ vscsi->flags &= ~(SCHEDULE_DISCONNECT |
+ DISCONNECT_SCHEDULED);
+ ibmvscsis_free_command_q(vscsi);
+ break;
+ case ERR_DISCONNECT_RECONNECT:
+ ibmvscsis_reset_queue(vscsi, WAIT_ENABLED);
+ break;
+
+ /* should never happen */
+ case WAIT_IDLE:
+ rc = ERROR;
+ dev_err(&vscsi->dev, "disconnect: invalid state %d for WAIT_IDLE\n",
+ vscsi->state);
+ break;
+ }
+ break;
+
+ case WAIT_IDLE:
+ switch (new_state) {
+ case ERR_DISCONNECT:
+ case ERR_DISCONNECT_RECONNECT:
+ vscsi->state = new_state;
+ break;
+ }
+ break;
+
+ /*
+ * Initiator has not done a successful srp login
+ * or has done a successful srp logout ( adapter was not
+ * busy). In the first case there can be responses queued
+ * waiting for space on the initiators response queue (MAD)
+ * The second case the adapter is idle. Assume the worse case,
+ * i.e. the second case.
+ */
+ case WAIT_CONNECTION:
+ case CONNECTED:
+ case SRP_PROCESSING:
+ wait_idle = true;
+ vscsi->state = new_state;
+ break;
+
+ /* can transition from this state to UNCONFIGURING */
+ case UNDEFINED:
+ if (new_state == UNCONFIGURING)
+ vscsi->state = new_state;
+ break;
+ default:
+ break;
+ }
+
+ if (wait_idle) {
+ pr_debug("disconnect start wait, active %d, sched %d\n",
+ (int)list_empty(&vscsi->active_q),
+ (int)list_empty(&vscsi->schedule_q));
+ if (!list_empty(&vscsi->active_q) ||
+ !list_empty(&vscsi->schedule_q)) {
+ vscsi->flags |= WAIT_FOR_IDLE;
+ pr_debug("disconnect flags 0x%x\n", vscsi->flags);
+ /*
+ * This routine is can not be called with the interrupt
+ * lock held.
+ */
+ spin_unlock_bh(&vscsi->intr_lock);
+ wait_for_completion(&vscsi->wait_idle);
+ spin_lock_bh(&vscsi->intr_lock);
+ }
+ pr_debug("disconnect stop wait\n");
+
+ ibmvscsis_adapter_idle(vscsi);
+ }
+
+ spin_unlock_bh(&vscsi->intr_lock);
+}
+
+/**
+ * ibmvscsis_post_disconnect() - Schedule the disconnect
+ * @vscsi: Pointer to our adapter structure
+ * @new_state: State to move to after disconnecting
+ * @flag_bits: Flags to turn on in adapter structure
+ *
+ * If it's already been scheduled, then see if we need to "upgrade"
+ * the new state (if the one passed in is more "severe" than the
+ * previous one).
+ *
+ * PRECONDITION:
+ * interrupt lock is held
+ */
+static void ibmvscsis_post_disconnect(struct scsi_info *vscsi, uint new_state,
+ uint flag_bits)
+{
+ uint state;
+
+ /* check the validity of the new state */
+ switch (new_state) {
+ case UNCONFIGURING:
+ case ERR_DISCONNECT:
+ case ERR_DISCONNECT_RECONNECT:
+ case WAIT_IDLE:
+ break;
+
+ default:
+ dev_err(&vscsi->dev, "post_disconnect: Invalid new state %d\n",
+ new_state);
+ return;
+ }
+
+ vscsi->flags |= flag_bits;
+
+ pr_debug("post_disconnect: new_state 0x%x, flag_bits 0x%x, vscsi->flags 0x%x, state %hx\n",
+ new_state, flag_bits, vscsi->flags, vscsi->state);
+
+ if (!(vscsi->flags & (DISCONNECT_SCHEDULED | SCHEDULE_DISCONNECT))) {
+ vscsi->flags |= SCHEDULE_DISCONNECT;
+ vscsi->new_state = new_state;
+
+ INIT_WORK(&vscsi->proc_work, ibmvscsis_disconnect);
+ (void)queue_work(vscsi->work_q, &vscsi->proc_work);
+ } else {
+ if (vscsi->new_state)
+ state = vscsi->new_state;
+ else
+ state = vscsi->state;
+
+ switch (state) {
+ case NO_QUEUE:
+ case UNCONFIGURING:
+ break;
+
+ case ERR_DISCONNECTED:
+ case ERR_DISCONNECT:
+ case UNDEFINED:
+ if (new_state == UNCONFIGURING)
+ vscsi->new_state = new_state;
+ break;
+
+ case ERR_DISCONNECT_RECONNECT:
+ switch (new_state) {
+ case UNCONFIGURING:
+ case ERR_DISCONNECT:
+ vscsi->new_state = new_state;
+ break;
+ default:
+ break;
+ }
+ break;
+
+ case WAIT_ENABLED:
+ case PART_UP_WAIT_ENAB:
+ case WAIT_IDLE:
+ case WAIT_CONNECTION:
+ case CONNECTED:
+ case SRP_PROCESSING:
+ vscsi->new_state = new_state;
+ break;
+
+ default:
+ break;
+ }
+ }
+
+ pr_debug("Leaving post_disconnect: flags 0x%x, new_state 0x%x\n",
+ vscsi->flags, vscsi->new_state);
+}
+
+/**
+ * ibmvscsis_trans_event() - Handle a Transport Event
+ * @vscsi: Pointer to our adapter structure
+ * @crq: Pointer to CRQ entry containing the Transport Event
+ *
+ * Do the logic to close the I_T nexus. This function may not
+ * behave to specification.
+ *
+ * EXECUTION ENVIRONMENT:
+ * Interrupt, interrupt lock held
+ */
+static long ibmvscsis_trans_event(struct scsi_info *vscsi,
+ struct viosrp_crq *crq)
+{
+ long rc = ADAPT_SUCCESS;
+
+ pr_debug("trans_event: format %d, flags 0x%x, state 0x%hx\n",
+ (int)crq->format, vscsi->flags, vscsi->state);
+
+ switch (crq->format) {
+ case MIGRATED:
+ case PARTNER_FAILED:
+ case PARTNER_DEREGISTER:
+ ibmvscsis_delete_client_info(vscsi, true);
+ break;
+
+ default:
+ rc = ERROR;
+ dev_err(&vscsi->dev, "trans_event: invalid format %d\n",
+ (uint)crq->format);
+ ibmvscsis_post_disconnect(vscsi, ERR_DISCONNECT,
+ RESPONSE_Q_DOWN);
+ break;
+ }
+
+ if (rc == ADAPT_SUCCESS) {
+ switch (vscsi->state) {
+ case NO_QUEUE:
+ case ERR_DISCONNECTED:
+ case UNDEFINED:
+ break;
+
+ case UNCONFIGURING:
+ vscsi->flags |= (RESPONSE_Q_DOWN | TRANS_EVENT);
+ break;
+
+ case WAIT_ENABLED:
+ break;
+
+ case WAIT_CONNECTION:
+ break;
+
+ case CONNECTED:
+ ibmvscsis_post_disconnect(vscsi, WAIT_IDLE,
+ (RESPONSE_Q_DOWN |
+ TRANS_EVENT));
+ break;
+
+ case PART_UP_WAIT_ENAB:
+ vscsi->state = WAIT_ENABLED;
+ break;
+
+ case SRP_PROCESSING:
+ if ((vscsi->debit > 0) ||
+ !list_empty(&vscsi->schedule_q) ||
+ !list_empty(&vscsi->waiting_rsp) ||
+ !list_empty(&vscsi->active_q)) {
+ pr_debug("debit %d, sched %d, wait %d, active %d\n",
+ vscsi->debit,
+ (int)list_empty(&vscsi->schedule_q),
+ (int)list_empty(&vscsi->waiting_rsp),
+ (int)list_empty(&vscsi->active_q));
+ pr_warn("connection lost with outstanding work\n");
+ } else {
+ pr_debug("trans_event: SRP Processing, but no outstanding work\n");
+ }
+
+ ibmvscsis_post_disconnect(vscsi, WAIT_IDLE,
+ (RESPONSE_Q_DOWN |
+ TRANS_EVENT));
+ break;
+
+ case ERR_DISCONNECT:
+ case ERR_DISCONNECT_RECONNECT:
+ case WAIT_IDLE:
+ vscsi->flags |= (RESPONSE_Q_DOWN | TRANS_EVENT);
+ break;
+ }
+ }
+
+ rc = vscsi->flags & SCHEDULE_DISCONNECT;
+
+ pr_debug("Leaving trans_event: flags 0x%x, state 0x%hx, rc %ld\n",
+ vscsi->flags, vscsi->state, rc);
+
+ return rc;
+}
+
+/**
+ * ibmvscsis_poll_cmd_q() - Poll Command Queue
+ * @vscsi: Pointer to our adapter structure
+ *
+ * Called to handle command elements that may have arrived while
+ * interrupts were disabled.
+ *
+ * EXECUTION ENVIRONMENT:
+ * intr_lock must be held
+ */
+static void ibmvscsis_poll_cmd_q(struct scsi_info *vscsi)
+{
+ struct viosrp_crq *crq;
+ long rc;
+ bool ack = true;
+ volatile u8 valid;
+
+ pr_debug("poll_cmd_q: flags 0x%x, state 0x%hx, q index %ud\n",
+ vscsi->flags, vscsi->state, vscsi->cmd_q.index);
+
+ rc = vscsi->flags & SCHEDULE_DISCONNECT;
+ crq = vscsi->cmd_q.base_addr + vscsi->cmd_q.index;
+ valid = crq->valid;
+ dma_rmb();
+
+ while (valid) {
+poll_work:
+ vscsi->cmd_q.index =
+ (vscsi->cmd_q.index + 1) & vscsi->cmd_q.mask;
+
+ if (!rc) {
+ rc = ibmvscsis_parse_command(vscsi, crq);
+ } else {
+ if ((uint)crq->valid == VALID_TRANS_EVENT) {
+ /*
+ * must service the transport layer events even
+ * in an error state, dont break out until all
+ * the consecutive transport events have been
+ * processed
+ */
+ rc = ibmvscsis_trans_event(vscsi, crq);
+ } else if (vscsi->flags & TRANS_EVENT) {
+ /*
+ * if a tranport event has occurred leave
+ * everything but transport events on the queue
+ */
+ pr_debug("poll_cmd_q, ignoring\n");
+
+ /*
+ * need to decrement the queue index so we can
+ * look at the elment again
+ */
+ if (vscsi->cmd_q.index)
+ vscsi->cmd_q.index -= 1;
+ else
+ /*
+ * index is at 0 it just wrapped.
+ * have it index last element in q
+ */
+ vscsi->cmd_q.index = vscsi->cmd_q.mask;
+ break;
+ }
+ }
+
+ crq->valid = INVALIDATE_CMD_RESP_EL;
+
+ crq = vscsi->cmd_q.base_addr + vscsi->cmd_q.index;
+ valid = crq->valid;
+ dma_rmb();
+ }
+
+ if (!rc) {
+ if (ack) {
+ vio_enable_interrupts(vscsi->dma_dev);
+ ack = false;
+ pr_debug("poll_cmd_q, reenabling interrupts\n");
+ }
+ valid = crq->valid;
+ dma_rmb();
+ if (valid)
+ goto poll_work;
+ }
+
+ pr_debug("Leaving poll_cmd_q: rc %ld\n", rc);
+}
+
+/**
+ * ibmvscsis_free_cmd_qs() - Free elements in queue
+ * @vscsi: Pointer to our adapter structure
+ *
+ * Free all of the elements on all queues that are waiting for
+ * whatever reason.
+ *
+ * PRECONDITION:
+ * Called with interrupt lock held
+ */
+static void ibmvscsis_free_cmd_qs(struct scsi_info *vscsi)
+{
+ struct ibmvscsis_cmd *cmd, *nxt;
+
+ pr_debug("free_cmd_qs: waiting_rsp empty %d, timer starter %d\n",
+ (int)list_empty(&vscsi->waiting_rsp),
+ vscsi->rsp_q_timer.started);
+
+ list_for_each_entry_safe(cmd, nxt, &vscsi->waiting_rsp, list) {
+ list_del(&cmd->list);
+ ibmvscsis_free_cmd_resources(vscsi, cmd);
+ }
+}
+
+/**
+ * ibmvscsis_get_free_cmd() - Get free command from list
+ * @vscsi: Pointer to our adapter structure
+ *
+ * Must be called with interrupt lock held.
+ */
+static struct ibmvscsis_cmd *ibmvscsis_get_free_cmd(struct scsi_info *vscsi)
+{
+ struct ibmvscsis_cmd *cmd = NULL;
+ struct iu_entry *iue;
+
+ iue = srp_iu_get(&vscsi->target);
+ if (iue) {
+ cmd = list_first_entry_or_null(&vscsi->free_cmd,
+ struct ibmvscsis_cmd, list);
+ if (cmd) {
+ list_del(&cmd->list);
+ cmd->iue = iue;
+ cmd->type = UNSET_TYPE;
+ memset(&cmd->se_cmd, 0, sizeof(cmd->se_cmd));
+ } else {
+ srp_iu_put(iue);
+ }
+ }
+
+ return cmd;
+}
+
+/**
+ * ibmvscsis_adapter_idle() - Helper function to handle idle adapter
+ * @vscsi: Pointer to our adapter structure
+ *
+ * This function is called when the adapter is idle when the driver
+ * is attempting to clear an error condition.
+ * The adapter is considered busy if any of its cmd queues
+ * are non-empty. This function can be invoked
+ * from the off level disconnect function.
+ *
+ * EXECUTION ENVIRONMENT:
+ * Process environment called with interrupt lock held
+ */
+static void ibmvscsis_adapter_idle(struct scsi_info *vscsi)
+{
+ int free_qs = false;
+
+ pr_debug("adapter_idle: flags 0x%x, state 0x%hx\n", vscsi->flags,
+ vscsi->state);
+
+ /* Only need to free qs if we're disconnecting from client */
+ if (vscsi->state != WAIT_CONNECTION || vscsi->flags & TRANS_EVENT)
+ free_qs = true;
+
+ switch (vscsi->state) {
+ case ERR_DISCONNECT_RECONNECT:
+ ibmvscsis_reset_queue(vscsi, WAIT_CONNECTION);
+ pr_debug("adapter_idle, disc_rec: flags 0x%x\n", vscsi->flags);
+ break;
+
+ case ERR_DISCONNECT:
+ ibmvscsis_free_command_q(vscsi);
+ vscsi->flags &= ~DISCONNECT_SCHEDULED;
+ vscsi->flags |= RESPONSE_Q_DOWN;
+ vscsi->state = ERR_DISCONNECTED;
+ pr_debug("adapter_idle, disc: flags 0x%x, state 0x%hx\n",
+ vscsi->flags, vscsi->state);
+ break;
+
+ case WAIT_IDLE:
+ vscsi->rsp_q_timer.timer_pops = 0;
+ vscsi->debit = 0;
+ vscsi->credit = 0;
+ if (vscsi->flags & TRANS_EVENT) {
+ vscsi->state = WAIT_CONNECTION;
+ vscsi->flags &= PRESERVE_FLAG_FIELDS;
+ } else {
+ vscsi->state = CONNECTED;
+ vscsi->flags &= ~DISCONNECT_SCHEDULED;
+ }
+
+ pr_debug("adapter_idle, wait: flags 0x%x, state 0x%hx\n",
+ vscsi->flags, vscsi->state);
+ ibmvscsis_poll_cmd_q(vscsi);
+ break;
+
+ case ERR_DISCONNECTED:
+ vscsi->flags &= ~DISCONNECT_SCHEDULED;
+ pr_debug("adapter_idle, disconnected: flags 0x%x, state 0x%hx\n",
+ vscsi->flags, vscsi->state);
+ break;
+
+ default:
+ dev_err(&vscsi->dev, "adapter_idle: in invalid state %d\n",
+ vscsi->state);
+ break;
+ }
+
+ if (free_qs)
+ ibmvscsis_free_cmd_qs(vscsi);
+
+ /*
+ * There is a timing window where we could lose a disconnect request.
+ * The known path to this window occurs during the DISCONNECT_RECONNECT
+ * case above: reset_queue calls free_command_q, which will release the
+ * interrupt lock. During that time, a new post_disconnect call can be
+ * made with a "more severe" state (DISCONNECT or UNCONFIGURING).
+ * Because the DISCONNECT_SCHEDULED flag is already set, post_disconnect
+ * will only set the new_state. Now free_command_q reacquires the intr
+ * lock and clears the DISCONNECT_SCHEDULED flag (using PRESERVE_FLAG_
+ * FIELDS), and the disconnect is lost. This is particularly bad when
+ * the new disconnect was for UNCONFIGURING, since the unconfigure hangs
+ * forever.
+ * Fix is that free command queue sets acr state and acr flags if there
+ * is a change under the lock
+ * note free command queue writes to this state it clears it
+ * before releasing the lock, different drivers call the free command
+ * queue different times so dont initialize above
+ */
+ if (vscsi->phyp_acr_state != 0) {
+ /*
+ * set any bits in flags that may have been cleared by
+ * a call to free command queue in switch statement
+ * or reset queue
+ */
+ vscsi->flags |= vscsi->phyp_acr_flags;
+ ibmvscsis_post_disconnect(vscsi, vscsi->phyp_acr_state, 0);
+ vscsi->phyp_acr_state = 0;
+ vscsi->phyp_acr_flags = 0;
+
+ pr_debug("adapter_idle: flags 0x%x, state 0x%hx, acr_flags 0x%x, acr_state 0x%hx\n",
+ vscsi->flags, vscsi->state, vscsi->phyp_acr_flags,
+ vscsi->phyp_acr_state);
+ }
+
+ pr_debug("Leaving adapter_idle: flags 0x%x, state 0x%hx, new_state 0x%x\n",
+ vscsi->flags, vscsi->state, vscsi->new_state);
+}
+
+/**
+ * ibmvscsis_copy_crq_packet() - Copy CRQ Packet
+ * @vscsi: Pointer to our adapter structure
+ * @cmd: Pointer to command element to use to process the request
+ * @crq: Pointer to CRQ entry containing the request
+ *
+ * Copy the srp information unit from the hosted
+ * partition using remote dma
+ *
+ * EXECUTION ENVIRONMENT:
+ * Interrupt, interrupt lock held
+ */
+static long ibmvscsis_copy_crq_packet(struct scsi_info *vscsi,
+ struct ibmvscsis_cmd *cmd,
+ struct viosrp_crq *crq)
+{
+ struct iu_entry *iue = cmd->iue;
+ long rc = 0;
+ u16 len;
+
+ len = be16_to_cpu(crq->IU_length);
+ if ((len > SRP_MAX_IU_LEN) || (len == 0)) {
+ dev_err(&vscsi->dev, "copy_crq: Invalid len %d passed", len);
+ ibmvscsis_post_disconnect(vscsi, ERR_DISCONNECT_RECONNECT, 0);
+ return SRP_VIOLATION;
+ }
+
+ rc = h_copy_rdma(len, vscsi->dds.window[REMOTE].liobn,
+ be64_to_cpu(crq->IU_data_ptr),
+ vscsi->dds.window[LOCAL].liobn, iue->sbuf->dma);
+
+ switch (rc) {
+ case H_SUCCESS:
+ cmd->init_time = mftb();
+ iue->remote_token = crq->IU_data_ptr;
+ iue->iu_len = len;
+ pr_debug("copy_crq: ioba 0x%llx, init_time 0x%llx\n",
+ be64_to_cpu(crq->IU_data_ptr), cmd->init_time);
+ break;
+ case H_PERMISSION:
+ if (connection_broken(vscsi))
+ ibmvscsis_post_disconnect(vscsi,
+ ERR_DISCONNECT_RECONNECT,
+ (RESPONSE_Q_DOWN |
+ CLIENT_FAILED));
+ else
+ ibmvscsis_post_disconnect(vscsi,
+ ERR_DISCONNECT_RECONNECT, 0);
+
+ dev_err(&vscsi->dev, "copy_crq: h_copy_rdma failed, rc %ld\n",
+ rc);
+ break;
+ case H_DEST_PARM:
+ case H_SOURCE_PARM:
+ default:
+ dev_err(&vscsi->dev, "copy_crq: h_copy_rdma failed, rc %ld\n",
+ rc);
+ ibmvscsis_post_disconnect(vscsi, ERR_DISCONNECT_RECONNECT, 0);
+ break;
+ }
+
+ return rc;
+}
+
+/**
+ * ibmvscsis_adapter_info - Service an Adapter Info MAnagement Data gram
+ * @vscsi: Pointer to our adapter structure
+ * @iue: Information Unit containing the Adapter Info MAD request
+ *
+ * EXECUTION ENVIRONMENT:
+ * Interrupt adpater lock is held
+ */
+static long ibmvscsis_adapter_info(struct scsi_info *vscsi,
+ struct iu_entry *iue)
+{
+ struct viosrp_adapter_info *mad = &vio_iu(iue)->mad.adapter_info;
+ struct mad_adapter_info_data *info;
+ uint flag_bits = 0;
+ dma_addr_t token;
+ long rc;
+
+ mad->common.status = cpu_to_be16(VIOSRP_MAD_SUCCESS);
+
+ if (be16_to_cpu(mad->common.length) > sizeof(*info)) {
+ mad->common.status = cpu_to_be16(VIOSRP_MAD_FAILED);
+ return 0;
+ }
+
+ info = dma_alloc_coherent(&vscsi->dma_dev->dev, sizeof(*info), &token,
+ GFP_KERNEL);
+ if (!info) {
+ dev_err(&vscsi->dev, "bad dma_alloc_coherent %p\n",
+ iue->target);
+ mad->common.status = cpu_to_be16(VIOSRP_MAD_FAILED);
+ return 0;
+ }
+
+ /* Get remote info */
+ rc = h_copy_rdma(be16_to_cpu(mad->common.length),
+ vscsi->dds.window[REMOTE].liobn,
+ be64_to_cpu(mad->buffer),
+ vscsi->dds.window[LOCAL].liobn, token);
+
+ if (rc != H_SUCCESS) {
+ if (rc == H_PERMISSION) {
+ if (connection_broken(vscsi))
+ flag_bits = (RESPONSE_Q_DOWN | CLIENT_FAILED);
+ }
+ pr_warn("adapter_info: h_copy_rdma from client failed, rc %ld\n",
+ rc);
+ pr_debug("adapter_info: ioba 0x%llx, flags 0x%x, flag_bits 0x%x\n",
+ be64_to_cpu(mad->buffer), vscsi->flags, flag_bits);
+ ibmvscsis_post_disconnect(vscsi, ERR_DISCONNECT_RECONNECT,
+ flag_bits);
+ goto free_dma;
+ }
+
+ /*
+ * Copy client info, but ignore partition number, which we
+ * already got from phyp - unless we failed to get it from
+ * phyp (e.g. if we're running on a p5 system).
+ */
+ if (vscsi->client_data.partition_number == 0)
+ vscsi->client_data.partition_number =
+ be32_to_cpu(info->partition_number);
+ strncpy(vscsi->client_data.srp_version, info->srp_version,
+ sizeof(vscsi->client_data.srp_version));
+ strncpy(vscsi->client_data.partition_name, info->partition_name,
+ sizeof(vscsi->client_data.partition_name));
+ vscsi->client_data.mad_version = be32_to_cpu(info->mad_version);
+ vscsi->client_data.os_type = be32_to_cpu(info->os_type);
+
+ /* Copy our info */
+ strncpy(info->srp_version, SRP_VERSION,
+ sizeof(info->srp_version));
+ strncpy(info->partition_name, vscsi->dds.partition_name,
+ sizeof(info->partition_name));
+ info->partition_number = cpu_to_be32(vscsi->dds.partition_num);
+ info->mad_version = cpu_to_be32(MAD_VERSION_1);
+ info->os_type = cpu_to_be32(LINUX);
+ memset(&info->port_max_txu[0], 0, sizeof(info->port_max_txu));
+ info->port_max_txu[0] = cpu_to_be32(128 * PAGE_SIZE);
+
+ dma_wmb();
+ rc = h_copy_rdma(sizeof(*info), vscsi->dds.window[LOCAL].liobn,
+ token, vscsi->dds.window[REMOTE].liobn,
+ be64_to_cpu(mad->buffer));
+ switch (rc) {
+ case H_SUCCESS:
+ break;
+
+ case H_SOURCE_PARM:
+ case H_DEST_PARM:
+ case H_PERMISSION:
+ if (connection_broken(vscsi))
+ flag_bits = (RESPONSE_Q_DOWN | CLIENT_FAILED);
+ default:
+ dev_err(&vscsi->dev, "adapter_info: h_copy_rdma to client failed, rc %ld\n",
+ rc);
+ ibmvscsis_post_disconnect(vscsi,
+ ERR_DISCONNECT_RECONNECT,
+ flag_bits);
+ break;
+ }
+
+free_dma:
+ dma_free_coherent(&vscsi->dma_dev->dev, sizeof(*info), info, token);
+ pr_debug("Leaving adapter_info, rc %ld\n", rc);
+
+ return rc;
+}
+
+/**
+ * ibmvscsis_cap_mad() - Service a Capabilities MAnagement Data gram
+ * @vscsi: Pointer to our adapter structure
+ * @iue: Information Unit containing the Capabilities MAD request
+ *
+ * NOTE: if you return an error from this routine you must be
+ * disconnecting or you will cause a hang
+ *
+ * EXECUTION ENVIRONMENT:
+ * Interrupt called with adapter lock held
+ */
+static int ibmvscsis_cap_mad(struct scsi_info *vscsi, struct iu_entry *iue)
+{
+ struct viosrp_capabilities *mad = &vio_iu(iue)->mad.capabilities;
+ struct capabilities *cap;
+ struct mad_capability_common *common;
+ dma_addr_t token;
+ u16 olen, len, status, min_len, cap_len;
+ u32 flag;
+ uint flag_bits = 0;
+ long rc = 0;
+
+ olen = be16_to_cpu(mad->common.length);
+ /*
+ * struct capabilities hardcodes a couple capabilities after the
+ * header, but the capabilities can actually be in any order.
+ */
+ min_len = offsetof(struct capabilities, migration);
+ if ((olen < min_len) || (olen > PAGE_SIZE)) {
+ pr_warn("cap_mad: invalid len %d\n", olen);
+ mad->common.status = cpu_to_be16(VIOSRP_MAD_FAILED);
+ return 0;
+ }
+
+ cap = dma_alloc_coherent(&vscsi->dma_dev->dev, olen, &token,
+ GFP_KERNEL);
+ if (!cap) {
+ dev_err(&vscsi->dev, "bad dma_alloc_coherent %p\n",
+ iue->target);
+ mad->common.status = cpu_to_be16(VIOSRP_MAD_FAILED);
+ return 0;
+ }
+ rc = h_copy_rdma(olen, vscsi->dds.window[REMOTE].liobn,
+ be64_to_cpu(mad->buffer),
+ vscsi->dds.window[LOCAL].liobn, token);
+ if (rc == H_SUCCESS) {
+ strncpy(cap->name, dev_name(&vscsi->dma_dev->dev),
+ SRP_MAX_LOC_LEN);
+
+ len = olen - min_len;
+ status = VIOSRP_MAD_SUCCESS;
+ common = (struct mad_capability_common *)&cap->migration;
+
+ while ((len > 0) && (status == VIOSRP_MAD_SUCCESS) && !rc) {
+ pr_debug("cap_mad: len left %hd, cap type %d, cap len %hd\n",
+ len, be32_to_cpu(common->cap_type),
+ be16_to_cpu(common->length));
+
+ cap_len = be16_to_cpu(common->length);
+ if (cap_len > len) {
+ dev_err(&vscsi->dev, "cap_mad: cap len mismatch with total len\n");
+ status = VIOSRP_MAD_FAILED;
+ break;
+ }
+
+ if (cap_len == 0) {
+ dev_err(&vscsi->dev, "cap_mad: cap len is 0\n");
+ status = VIOSRP_MAD_FAILED;
+ break;
+ }
+
+ switch (common->cap_type) {
+ default:
+ pr_debug("cap_mad: unsupported capability\n");
+ common->server_support = 0;
+ flag = cpu_to_be32((u32)CAP_LIST_SUPPORTED);
+ cap->flags &= ~flag;
+ break;
+ }
+
+ len = len - cap_len;
+ common = (struct mad_capability_common *)
+ ((char *)common + cap_len);
+ }
+
+ mad->common.status = cpu_to_be16(status);
+
+ dma_wmb();
+ rc = h_copy_rdma(olen, vscsi->dds.window[LOCAL].liobn, token,
+ vscsi->dds.window[REMOTE].liobn,
+ be64_to_cpu(mad->buffer));
+
+ if (rc != H_SUCCESS) {
+ pr_debug("cap_mad: failed to copy to client, rc %ld\n",
+ rc);
+
+ if (rc == H_PERMISSION) {
+ if (connection_broken(vscsi))
+ flag_bits = (RESPONSE_Q_DOWN |
+ CLIENT_FAILED);
+ }
+
+ pr_warn("cap_mad: error copying data to client, rc %ld\n",
+ rc);
+ ibmvscsis_post_disconnect(vscsi,
+ ERR_DISCONNECT_RECONNECT,
+ flag_bits);
+ }
+ }
+
+ dma_free_coherent(&vscsi->dma_dev->dev, olen, cap, token);
+
+ pr_debug("Leaving cap_mad, rc %ld, client_cap 0x%x\n",
+ rc, vscsi->client_cap);
+
+ return rc;
+}
+
+/**
+ * ibmvscsis_process_mad() - Service a MAnagement Data gram
+ * @vscsi: Pointer to our adapter structure
+ * @iue: Information Unit containing the MAD request
+ *
+ * Must be called with interrupt lock held.
+ */
+static long ibmvscsis_process_mad(struct scsi_info *vscsi, struct iu_entry *iue)
+{
+ struct mad_common *mad = (struct mad_common *)&vio_iu(iue)->mad;
+ struct viosrp_empty_iu *empty;
+ long rc = ADAPT_SUCCESS;
+
+ switch (be32_to_cpu(mad->type)) {
+ case VIOSRP_EMPTY_IU_TYPE:
+ empty = &vio_iu(iue)->mad.empty_iu;
+ vscsi->empty_iu_id = be64_to_cpu(empty->buffer);
+ vscsi->empty_iu_tag = be64_to_cpu(empty->common.tag);
+ mad->status = cpu_to_be16(VIOSRP_MAD_SUCCESS);
+ break;
+ case VIOSRP_ADAPTER_INFO_TYPE:
+ rc = ibmvscsis_adapter_info(vscsi, iue);
+ break;
+ case VIOSRP_CAPABILITIES_TYPE:
+ rc = ibmvscsis_cap_mad(vscsi, iue);
+ break;
+ case VIOSRP_ENABLE_FAST_FAIL:
+ if (vscsi->state == CONNECTED) {
+ vscsi->fast_fail = true;
+ mad->status = cpu_to_be16(VIOSRP_MAD_SUCCESS);
+ } else {
+ pr_warn("fast fail mad sent after login\n");
+ mad->status = cpu_to_be16(VIOSRP_MAD_FAILED);
+ }
+ break;
+ default:
+ mad->status = cpu_to_be16(VIOSRP_MAD_NOT_SUPPORTED);
+ break;
+ }
+
+ return rc;
+}
+
+/**
+ * srp_snd_msg_failed() - Handle an error when sending a response
+ * @vscsi: Pointer to our adapter structure
+ * @rc: The return code from the h_send_crq command
+ *
+ * Must be called with interrupt lock held.
+ */
+static void srp_snd_msg_failed(struct scsi_info *vscsi, long rc)
+{
+ ktime_t kt;
+
+ if (rc != H_DROPPED) {
+ ibmvscsis_free_cmd_qs(vscsi);
+
+ if (rc == H_CLOSED)
+ vscsi->flags |= CLIENT_FAILED;
+
+ /* don't flag the same problem multiple times */
+ if (!(vscsi->flags & RESPONSE_Q_DOWN)) {
+ vscsi->flags |= RESPONSE_Q_DOWN;
+ if (!(vscsi->state & (ERR_DISCONNECT |
+ ERR_DISCONNECT_RECONNECT |
+ ERR_DISCONNECTED | UNDEFINED))) {
+ dev_err(&vscsi->dev, "snd_msg_failed: setting RESPONSE_Q_DOWN, state 0x%hx, flags 0x%x, rc %ld\n",
+ vscsi->state, vscsi->flags, rc);
+ }
+ ibmvscsis_post_disconnect(vscsi,
+ ERR_DISCONNECT_RECONNECT, 0);
+ }
+ return;
+ }
+
+ /*
+ * The response queue is full.
+ * If the server is processing SRP requests, i.e.
+ * the client has successfully done an
+ * SRP_LOGIN, then it will wait forever for room in
+ * the queue. However if the system admin
+ * is attempting to unconfigure the server then one
+ * or more children will be in a state where
+ * they are being removed. So if there is even one
+ * child being removed then the driver assumes
+ * the system admin is attempting to break the
+ * connection with the client and MAX_TIMER_POPS
+ * is honored.
+ */
+ if ((vscsi->rsp_q_timer.timer_pops < MAX_TIMER_POPS) ||
+ (vscsi->state == SRP_PROCESSING)) {
+ pr_debug("snd_msg_failed: response queue full, flags 0x%x, timer started %d, pops %d\n",
+ vscsi->flags, (int)vscsi->rsp_q_timer.started,
+ vscsi->rsp_q_timer.timer_pops);
+
+ /*
+ * Check if the timer is running; if it
+ * is not then start it up.
+ */
+ if (!vscsi->rsp_q_timer.started) {
+ if (vscsi->rsp_q_timer.timer_pops <
+ MAX_TIMER_POPS) {
+ kt = ktime_set(0, WAIT_NANO_SECONDS);
+ } else {
+ /*
+ * slide the timeslice if the maximum
+ * timer pops have already happened
+ */
+ kt = ktime_set(WAIT_SECONDS, 0);
+ }
+
+ vscsi->rsp_q_timer.started = true;
+ hrtimer_start(&vscsi->rsp_q_timer.timer, kt,
+ HRTIMER_MODE_REL);
+ }
+ } else {
+ /*
+ * TBD: Do we need to worry about this? Need to get
+ * remove working.
+ */
+ /*
+ * waited a long time and it appears the system admin
+ * is bring this driver down
+ */
+ vscsi->flags |= RESPONSE_Q_DOWN;
+ ibmvscsis_free_cmd_qs(vscsi);
+ /*
+ * if the driver is already attempting to disconnect
+ * from the client and has already logged an error
+ * trace this event but don't put it in the error log
+ */
+ if (!(vscsi->state & (ERR_DISCONNECT |
+ ERR_DISCONNECT_RECONNECT |
+ ERR_DISCONNECTED | UNDEFINED))) {
+ dev_err(&vscsi->dev, "client crq full too long\n");
+ ibmvscsis_post_disconnect(vscsi,
+ ERR_DISCONNECT_RECONNECT,
+ 0);
+ }
+ }
+}
+
+/**
+ * ibmvscsis_send_messages() - Send a Response
+ * @vscsi: Pointer to our adapter structure
+ *
+ * Send a response, first checking the waiting queue. Responses are
+ * sent in order they are received. If the response cannot be sent,
+ * because the client queue is full, it stays on the waiting queue.
+ *
+ * PRECONDITION:
+ * Called with interrupt lock held
+ */
+static void ibmvscsis_send_messages(struct scsi_info *vscsi)
+{
+ u64 msg_hi = 0;
+ /* note do not attmempt to access the IU_data_ptr with this pointer
+ * it is not valid
+ */
+ struct viosrp_crq *crq = (struct viosrp_crq *)&msg_hi;
+ struct ibmvscsis_cmd *cmd, *nxt;
+ struct iu_entry *iue;
+ long rc = ADAPT_SUCCESS;
+
+ if (!(vscsi->flags & RESPONSE_Q_DOWN)) {
+ list_for_each_entry_safe(cmd, nxt, &vscsi->waiting_rsp, list) {
+ pr_debug("send_messages cmd %p\n", cmd);
+
+ iue = cmd->iue;
+
+ crq->valid = VALID_CMD_RESP_EL;
+ crq->format = cmd->rsp.format;
+
+ if (cmd->flags & CMD_FAST_FAIL)
+ crq->status = VIOSRP_ADAPTER_FAIL;
+
+ crq->IU_length = cpu_to_be16(cmd->rsp.len);
+
+ rc = h_send_crq(vscsi->dma_dev->unit_address,
+ be64_to_cpu(msg_hi),
+ be64_to_cpu(cmd->rsp.tag));
+
+ pr_debug("send_messages: tag 0x%llx, rc %ld\n",
+ be64_to_cpu(cmd->rsp.tag), rc);
+
+ /* if all ok free up the command element resources */
+ if (rc == H_SUCCESS) {
+ /* some movement has occurred */
+ vscsi->rsp_q_timer.timer_pops = 0;
+ list_del(&cmd->list);
+
+ ibmvscsis_free_cmd_resources(vscsi, cmd);
+ } else {
+ srp_snd_msg_failed(vscsi, rc);
+ break;
+ }
+ }
+
+ if (!rc) {
+ /*
+ * The timer could pop with the queue empty. If
+ * this happens, rc will always indicate a
+ * success; clear the pop count.
+ */
+ vscsi->rsp_q_timer.timer_pops = 0;
+ }
+ } else {
+ ibmvscsis_free_cmd_qs(vscsi);
+ }
+}
+
+/* Called with intr lock held */
+static void ibmvscsis_send_mad_resp(struct scsi_info *vscsi,
+ struct ibmvscsis_cmd *cmd,
+ struct viosrp_crq *crq)
+{
+ struct iu_entry *iue = cmd->iue;
+ struct mad_common *mad = (struct mad_common *)&vio_iu(iue)->mad;
+ uint flag_bits = 0;
+ long rc;
+
+ dma_wmb();
+ rc = h_copy_rdma(sizeof(struct mad_common),
+ vscsi->dds.window[LOCAL].liobn, iue->sbuf->dma,
+ vscsi->dds.window[REMOTE].liobn,
+ be64_to_cpu(crq->IU_data_ptr));
+ if (!rc) {
+ cmd->rsp.format = VIOSRP_MAD_FORMAT;
+ cmd->rsp.len = sizeof(struct mad_common);
+ cmd->rsp.tag = mad->tag;
+ list_add_tail(&cmd->list, &vscsi->waiting_rsp);
+ ibmvscsis_send_messages(vscsi);
+ } else {
+ pr_debug("Error sending mad response, rc %ld\n", rc);
+ if (rc == H_PERMISSION) {
+ if (connection_broken(vscsi))
+ flag_bits = (RESPONSE_Q_DOWN | CLIENT_FAILED);
+ }
+ dev_err(&vscsi->dev, "mad: failed to copy to client, rc %ld\n",
+ rc);
+
+ ibmvscsis_free_cmd_resources(vscsi, cmd);
+ ibmvscsis_post_disconnect(vscsi, ERR_DISCONNECT_RECONNECT,
+ flag_bits);
+ }
+}
+
+/**
+ * ibmvscsis_mad() - Service a MAnagement Data gram.
+ * @vscsi: Pointer to our adapter structure
+ * @crq: Pointer to the CRQ entry containing the MAD request
+ *
+ * EXECUTION ENVIRONMENT:
+ * Interrupt called with adapter lock held
+ */
+static long ibmvscsis_mad(struct scsi_info *vscsi, struct viosrp_crq *crq)
+{
+ struct iu_entry *iue;
+ struct ibmvscsis_cmd *cmd;
+ struct mad_common *mad;
+ long rc = ADAPT_SUCCESS;
+
+ switch (vscsi->state) {
+ /*
+ * We have not exchanged Init Msgs yet, so this MAD was sent
+ * before the last Transport Event; client will not be
+ * expecting a response.
+ */
+ case WAIT_CONNECTION:
+ pr_debug("mad: in Wait Connection state, ignoring MAD, flags %d\n",
+ vscsi->flags);
+ return ADAPT_SUCCESS;
+
+ case SRP_PROCESSING:
+ case CONNECTED:
+ break;
+
+ /*
+ * We should never get here while we're in these states.
+ * Just log an error and get out.
+ */
+ case UNCONFIGURING:
+ case WAIT_IDLE:
+ case ERR_DISCONNECT:
+ case ERR_DISCONNECT_RECONNECT:
+ default:
+ dev_err(&vscsi->dev, "mad: invalid adapter state %d for mad\n",
+ vscsi->state);
+ return ADAPT_SUCCESS;
+ }
+
+ cmd = ibmvscsis_get_free_cmd(vscsi);
+ if (!cmd) {
+ dev_err(&vscsi->dev, "mad: failed to get cmd, debit %d\n",
+ vscsi->debit);
+ ibmvscsis_post_disconnect(vscsi, ERR_DISCONNECT_RECONNECT, 0);
+ return ERROR;
+ }
+ iue = cmd->iue;
+ cmd->type = ADAPTER_MAD;
+
+ rc = ibmvscsis_copy_crq_packet(vscsi, cmd, crq);
+ if (!rc) {
+ mad = (struct mad_common *)&vio_iu(iue)->mad;
+
+ pr_debug("mad: type %d\n", be32_to_cpu(mad->type));
+
+ if (be16_to_cpu(mad->length) < 0) {
+ dev_err(&vscsi->dev, "mad: length is < 0\n");
+ ibmvscsis_post_disconnect(vscsi,
+ ERR_DISCONNECT_RECONNECT, 0);
+ rc = SRP_VIOLATION;
+ } else {
+ rc = ibmvscsis_process_mad(vscsi, iue);
+ }
+
+ pr_debug("mad: status %hd, rc %ld\n", be16_to_cpu(mad->status),
+ rc);
+
+ if (!rc)
+ ibmvscsis_send_mad_resp(vscsi, cmd, crq);
+ } else {
+ ibmvscsis_free_cmd_resources(vscsi, cmd);
+ }
+
+ pr_debug("Leaving mad, rc %ld\n", rc);
+ return rc;
+}
+
+/**
+ * ibmvscsis_login_rsp() - Create/copy a login response notice to the client
+ * @vscsi: Pointer to our adapter structure
+ * @cmd: Pointer to the command for the SRP Login request
+ *
+ * EXECUTION ENVIRONMENT:
+ * Interrupt, interrupt lock held
+ */
+static long ibmvscsis_login_rsp(struct scsi_info *vscsi,
+ struct ibmvscsis_cmd *cmd)
+{
+ struct iu_entry *iue = cmd->iue;
+ struct srp_login_rsp *rsp = &vio_iu(iue)->srp.login_rsp;
+ struct format_code *fmt;
+ uint flag_bits = 0;
+ long rc = ADAPT_SUCCESS;
+
+ memset(rsp, 0, sizeof(struct srp_login_rsp));
+
+ rsp->opcode = SRP_LOGIN_RSP;
+ rsp->req_lim_delta = cpu_to_be32(vscsi->request_limit);
+ rsp->tag = cmd->rsp.tag;
+ rsp->max_it_iu_len = cpu_to_be32(SRP_MAX_IU_LEN);
+ rsp->max_ti_iu_len = cpu_to_be32(SRP_MAX_IU_LEN);
+ fmt = (struct format_code *)&rsp->buf_fmt;
+ fmt->buffers = SUPPORTED_FORMATS;
+ vscsi->credit = 0;
+
+ cmd->rsp.len = sizeof(struct srp_login_rsp);
+
+ dma_wmb();
+ rc = h_copy_rdma(cmd->rsp.len, vscsi->dds.window[LOCAL].liobn,
+ iue->sbuf->dma, vscsi->dds.window[REMOTE].liobn,
+ be64_to_cpu(iue->remote_token));
+
+ switch (rc) {
+ case H_SUCCESS:
+ break;
+
+ case H_PERMISSION:
+ if (connection_broken(vscsi))
+ flag_bits = RESPONSE_Q_DOWN | CLIENT_FAILED;
+ dev_err(&vscsi->dev, "login_rsp: error copying to client, rc %ld\n",
+ rc);
+ ibmvscsis_post_disconnect(vscsi, ERR_DISCONNECT_RECONNECT,
+ flag_bits);
+ break;
+ case H_SOURCE_PARM:
+ case H_DEST_PARM:
+ default:
+ dev_err(&vscsi->dev, "login_rsp: error copying to client, rc %ld\n",
+ rc);
+ ibmvscsis_post_disconnect(vscsi, ERR_DISCONNECT_RECONNECT, 0);
+ break;
+ }
+
+ return rc;
+}
+
+/**
+ * ibmvscsis_srp_login_rej() - Create/copy a login rejection notice to client
+ * @vscsi: Pointer to our adapter structure
+ * @cmd: Pointer to the command for the SRP Login request
+ * @reason: The reason the SRP Login is being rejected, per SRP protocol
+ *
+ * EXECUTION ENVIRONMENT:
+ * Interrupt, interrupt lock held
+ */
+static long ibmvscsis_srp_login_rej(struct scsi_info *vscsi,
+ struct ibmvscsis_cmd *cmd, u32 reason)
+{
+ struct iu_entry *iue = cmd->iue;
+ struct srp_login_rej *rej = &vio_iu(iue)->srp.login_rej;
+ struct format_code *fmt;
+ uint flag_bits = 0;
+ long rc = ADAPT_SUCCESS;
+
+ memset(rej, 0, sizeof(*rej));
+
+ rej->opcode = SRP_LOGIN_REJ;
+ rej->reason = cpu_to_be32(reason);
+ rej->tag = cmd->rsp.tag;
+ fmt = (struct format_code *)&rej->buf_fmt;
+ fmt->buffers = SUPPORTED_FORMATS;
+
+ cmd->rsp.len = sizeof(*rej);
+
+ dma_wmb();
+ rc = h_copy_rdma(cmd->rsp.len, vscsi->dds.window[LOCAL].liobn,
+ iue->sbuf->dma, vscsi->dds.window[REMOTE].liobn,
+ be64_to_cpu(iue->remote_token));
+
+ switch (rc) {
+ case H_SUCCESS:
+ break;
+ case H_PERMISSION:
+ if (connection_broken(vscsi))
+ flag_bits = RESPONSE_Q_DOWN | CLIENT_FAILED;
+ dev_err(&vscsi->dev, "login_rej: error copying to client, rc %ld\n",
+ rc);
+ ibmvscsis_post_disconnect(vscsi, ERR_DISCONNECT_RECONNECT,
+ flag_bits);
+ break;
+ case H_SOURCE_PARM:
+ case H_DEST_PARM:
+ default:
+ dev_err(&vscsi->dev, "login_rej: error copying to client, rc %ld\n",
+ rc);
+ ibmvscsis_post_disconnect(vscsi, ERR_DISCONNECT_RECONNECT, 0);
+ break;
+ }
+
+ return rc;
+}
+
+static int ibmvscsis_make_nexus(struct ibmvscsis_tport *tport)
+{
+ char *name = tport->tport_name;
+ struct ibmvscsis_nexus *nexus;
+ int rc;
+
+ if (tport->ibmv_nexus) {
+ pr_debug("tport->ibmv_nexus already exists\n");
+ return 0;
+ }
+
+ nexus = kzalloc(sizeof(*nexus), GFP_KERNEL);
+ if (!nexus) {
+ pr_err("Unable to allocate struct ibmvscsis_nexus\n");
+ return -ENOMEM;
+ }
+
+ nexus->se_sess = target_alloc_session(&tport->se_tpg, 0, 0,
+ TARGET_PROT_NORMAL, name, nexus,
+ NULL);
+ if (IS_ERR(nexus->se_sess)) {
+ rc = PTR_ERR(nexus->se_sess);
+ goto transport_init_fail;
+ }
+
+ tport->ibmv_nexus = nexus;
+
+ return 0;
+
+transport_init_fail:
+ kfree(nexus);
+ return rc;
+}
+
+static int ibmvscsis_drop_nexus(struct ibmvscsis_tport *tport)
+{
+ struct se_session *se_sess;
+ struct ibmvscsis_nexus *nexus;
+
+ nexus = tport->ibmv_nexus;
+ if (!nexus)
+ return -ENODEV;
+
+ se_sess = nexus->se_sess;
+ if (!se_sess)
+ return -ENODEV;
+
+ /*
+ * Release the SCSI I_T Nexus to the emulated ibmvscsis Target Port
+ */
+ transport_deregister_session(se_sess);
+ tport->ibmv_nexus = NULL;
+ kfree(nexus);
+
+ return 0;
+}
+
+/**
+ * ibmvscsis_srp_login() - Process an SRP Login Request
+ * @vscsi: Pointer to our adapter structure
+ * @cmd: Command element to use to process the SRP Login request
+ * @crq: Pointer to CRQ entry containing the SRP Login request
+ *
+ * EXECUTION ENVIRONMENT:
+ * Interrupt, called with interrupt lock held
+ */
+static long ibmvscsis_srp_login(struct scsi_info *vscsi,
+ struct ibmvscsis_cmd *cmd,
+ struct viosrp_crq *crq)
+{
+ struct iu_entry *iue = cmd->iue;
+ struct srp_login_req *req = &vio_iu(iue)->srp.login_req;
+ struct port_id {
+ __be64 id_extension;
+ __be64 io_guid;
+ } *iport, *tport;
+ struct format_code *fmt;
+ u32 reason = 0x0;
+ long rc = ADAPT_SUCCESS;
+
+ iport = (struct port_id *)req->initiator_port_id;
+ tport = (struct port_id *)req->target_port_id;
+ fmt = (struct format_code *)&req->req_buf_fmt;
+ if (be32_to_cpu(req->req_it_iu_len) > SRP_MAX_IU_LEN)
+ reason = SRP_LOGIN_REJ_REQ_IT_IU_LENGTH_TOO_LARGE;
+ else if (be32_to_cpu(req->req_it_iu_len) < 64)
+ reason = SRP_LOGIN_REJ_UNABLE_ESTABLISH_CHANNEL;
+ else if ((be64_to_cpu(iport->id_extension) > (MAX_NUM_PORTS - 1)) ||
+ (be64_to_cpu(tport->id_extension) > (MAX_NUM_PORTS - 1)))
+ reason = SRP_LOGIN_REJ_UNABLE_ASSOCIATE_CHANNEL;
+ else if (req->req_flags & SRP_MULTICHAN_MULTI)
+ reason = SRP_LOGIN_REJ_MULTI_CHANNEL_UNSUPPORTED;
+ else if (fmt->buffers & (~SUPPORTED_FORMATS))
+ reason = SRP_LOGIN_REJ_UNSUPPORTED_DESCRIPTOR_FMT;
+ else if ((fmt->buffers | SUPPORTED_FORMATS) == 0)
+ reason = SRP_LOGIN_REJ_UNSUPPORTED_DESCRIPTOR_FMT;
+
+ if (vscsi->state == SRP_PROCESSING)
+ reason = SRP_LOGIN_REJ_CHANNEL_LIMIT_REACHED;
+
+ rc = ibmvscsis_make_nexus(&vscsi->tport);
+ if (rc)
+ reason = SRP_LOGIN_REJ_UNABLE_ESTABLISH_CHANNEL;
+
+ cmd->rsp.format = VIOSRP_SRP_FORMAT;
+ cmd->rsp.tag = req->tag;
+
+ pr_debug("srp_login: reason 0x%x\n", reason);
+
+ if (reason)
+ rc = ibmvscsis_srp_login_rej(vscsi, cmd, reason);
+ else
+ rc = ibmvscsis_login_rsp(vscsi, cmd);
+
+ if (!rc) {
+ if (!reason)
+ vscsi->state = SRP_PROCESSING;
+
+ list_add_tail(&cmd->list, &vscsi->waiting_rsp);
+ ibmvscsis_send_messages(vscsi);
+ } else {
+ ibmvscsis_free_cmd_resources(vscsi, cmd);
+ }
+
+ pr_debug("Leaving srp_login, rc %ld\n", rc);
+ return rc;
+}
+
+/**
+ * ibmvscsis_srp_i_logout() - Helper Function to close I_T Nexus
+ * @vscsi: Pointer to our adapter structure
+ * @cmd: Command element to use to process the Implicit Logout request
+ * @crq: Pointer to CRQ entry containing the Implicit Logout request
+ *
+ * Do the logic to close the I_T nexus. This function may not
+ * behave to specification.
+ *
+ * EXECUTION ENVIRONMENT:
+ * Interrupt, interrupt lock held
+ */
+static long ibmvscsis_srp_i_logout(struct scsi_info *vscsi,
+ struct ibmvscsis_cmd *cmd,
+ struct viosrp_crq *crq)
+{
+ struct iu_entry *iue = cmd->iue;
+ struct srp_i_logout *log_out = &vio_iu(iue)->srp.i_logout;
+ long rc = ADAPT_SUCCESS;
+
+ if ((vscsi->debit > 0) || !list_empty(&vscsi->schedule_q) ||
+ !list_empty(&vscsi->waiting_rsp)) {
+ dev_err(&vscsi->dev, "i_logout: outstanding work\n");
+ ibmvscsis_post_disconnect(vscsi, ERR_DISCONNECT, 0);
+ } else {
+ cmd->rsp.format = SRP_FORMAT;
+ cmd->rsp.tag = log_out->tag;
+ cmd->rsp.len = sizeof(struct mad_common);
+ list_add_tail(&cmd->list, &vscsi->waiting_rsp);
+ ibmvscsis_send_messages(vscsi);
+
+ ibmvscsis_post_disconnect(vscsi, WAIT_IDLE, 0);
+ }
+
+ return rc;
+}
+
+/* Called with intr lock held */
+static void ibmvscsis_srp_cmd(struct scsi_info *vscsi, struct viosrp_crq *crq)
+{
+ struct ibmvscsis_cmd *cmd;
+ struct iu_entry *iue;
+ struct srp_cmd *srp;
+ struct srp_tsk_mgmt *tsk;
+ long rc;
+
+ if (vscsi->request_limit - vscsi->debit <= 0) {
+ /* Client has exceeded request limit */
+ dev_err(&vscsi->dev, "Client exceeded the request limit (%d), debit %d\n",
+ vscsi->request_limit, vscsi->debit);
+ ibmvscsis_post_disconnect(vscsi, ERR_DISCONNECT_RECONNECT, 0);
+ return;
+ }
+
+ cmd = ibmvscsis_get_free_cmd(vscsi);
+ if (!cmd) {
+ dev_err(&vscsi->dev, "srp_cmd failed to get cmd, debit %d\n",
+ vscsi->debit);
+ ibmvscsis_post_disconnect(vscsi, ERR_DISCONNECT_RECONNECT, 0);
+ return;
+ }
+ iue = cmd->iue;
+ srp = &vio_iu(iue)->srp.cmd;
+
+ rc = ibmvscsis_copy_crq_packet(vscsi, cmd, crq);
+ if (rc) {
+ ibmvscsis_free_cmd_resources(vscsi, cmd);
+ return;
+ }
+
+ if (vscsi->state == SRP_PROCESSING) {
+ switch (srp->opcode) {
+ case SRP_LOGIN_REQ:
+ rc = ibmvscsis_srp_login(vscsi, cmd, crq);
+ break;
+
+ case SRP_TSK_MGMT:
+ tsk = &vio_iu(iue)->srp.tsk_mgmt;
+ pr_debug("tsk_mgmt tag: %llu (0x%llx)\n", tsk->tag,
+ tsk->tag);
+ cmd->rsp.tag = tsk->tag;
+ vscsi->debit += 1;
+ cmd->type = TASK_MANAGEMENT;
+ list_add_tail(&cmd->list, &vscsi->schedule_q);
+ queue_work(vscsi->work_q, &cmd->work);
+ break;
+
+ case SRP_CMD:
+ pr_debug("srp_cmd tag: %llu (0x%llx)\n", srp->tag,
+ srp->tag);
+ cmd->rsp.tag = srp->tag;
+ vscsi->debit += 1;
+ cmd->type = SCSI_CDB;
+ /*
+ * We want to keep track of work waiting for
+ * the workqueue.
+ */
+ list_add_tail(&cmd->list, &vscsi->schedule_q);
+ queue_work(vscsi->work_q, &cmd->work);
+ break;
+
+ case SRP_I_LOGOUT:
+ rc = ibmvscsis_srp_i_logout(vscsi, cmd, crq);
+ break;
+
+ case SRP_CRED_RSP:
+ case SRP_AER_RSP:
+ default:
+ ibmvscsis_free_cmd_resources(vscsi, cmd);
+ dev_err(&vscsi->dev, "invalid srp cmd, opcode %d\n",
+ (uint)srp->opcode);
+ ibmvscsis_post_disconnect(vscsi,
+ ERR_DISCONNECT_RECONNECT, 0);
+ break;
+ }
+ } else if (srp->opcode == SRP_LOGIN_REQ && vscsi->state == CONNECTED) {
+ rc = ibmvscsis_srp_login(vscsi, cmd, crq);
+ } else {
+ ibmvscsis_free_cmd_resources(vscsi, cmd);
+ dev_err(&vscsi->dev, "Invalid state %d to handle srp cmd\n",
+ vscsi->state);
+ ibmvscsis_post_disconnect(vscsi, ERR_DISCONNECT_RECONNECT, 0);
+ }
+}
+
+/**
+ * ibmvscsis_ping_response() - Respond to a ping request
+ * @vscsi: Pointer to our adapter structure
+ *
+ * Let the client know that the server is alive and waiting on
+ * its native I/O stack.
+ * If any type of error occurs from the call to queue a ping
+ * response then the client is either not accepting or receiving
+ * interrupts. Disconnect with an error.
+ *
+ * EXECUTION ENVIRONMENT:
+ * Interrupt, interrupt lock held
+ */
+static long ibmvscsis_ping_response(struct scsi_info *vscsi)
+{
+ struct viosrp_crq *crq;
+ u64 buffer[2] = { 0, 0 };
+ long rc;
+
+ crq = (struct viosrp_crq *)&buffer;
+ crq->valid = VALID_CMD_RESP_EL;
+ crq->format = (u8)MESSAGE_IN_CRQ;
+ crq->status = PING_RESPONSE;
+
+ rc = h_send_crq(vscsi->dds.unit_id, cpu_to_be64(buffer[MSG_HI]),
+ cpu_to_be64(buffer[MSG_LOW]));
+
+ switch (rc) {
+ case H_SUCCESS:
+ break;
+ case H_CLOSED:
+ vscsi->flags |= CLIENT_FAILED;
+ case H_DROPPED:
+ vscsi->flags |= RESPONSE_Q_DOWN;
+ case H_REMOTE_PARM:
+ dev_err(&vscsi->dev, "ping_response: h_send_crq failed, rc %ld\n",
+ rc);
+ ibmvscsis_post_disconnect(vscsi, ERR_DISCONNECT_RECONNECT, 0);
+ break;
+ default:
+ dev_err(&vscsi->dev, "ping_response: h_send_crq returned unknown rc %ld\n",
+ rc);
+ ibmvscsis_post_disconnect(vscsi, ERR_DISCONNECT, 0);
+ break;
+ }
+
+ return rc;
+}
+
+/**
+ * ibmvscsis_handle_init_compl_msg() - Respond to an Init Complete Message
+ * @vscsi: Pointer to our adapter structure
+ *
+ * Must be called with interrupt lock held.
+ */
+static long ibmvscsis_handle_init_compl_msg(struct scsi_info *vscsi)
+{
+ long rc = ADAPT_SUCCESS;
+
+ switch (vscsi->state) {
+ case NO_QUEUE:
+ case ERR_DISCONNECT:
+ case ERR_DISCONNECT_RECONNECT:
+ case ERR_DISCONNECTED:
+ case UNCONFIGURING:
+ case UNDEFINED:
+ rc = ERROR;
+ break;
+
+ case WAIT_CONNECTION:
+ vscsi->state = CONNECTED;
+ break;
+
+ case WAIT_IDLE:
+ case SRP_PROCESSING:
+ case CONNECTED:
+ case WAIT_ENABLED:
+ case PART_UP_WAIT_ENAB:
+ default:
+ rc = ERROR;
+ dev_err(&vscsi->dev, "init_msg: invalid state %d to get init compl msg\n",
+ vscsi->state);
+ ibmvscsis_post_disconnect(vscsi, ERR_DISCONNECT_RECONNECT, 0);
+ break;
+ }
+
+ return rc;
+}
+
+/**
+ * ibmvscsis_handle_init_msg() - Respond to an Init Message
+ * @vscsi: Pointer to our adapter structure
+ *
+ * Must be called with interrupt lock held.
+ */
+static long ibmvscsis_handle_init_msg(struct scsi_info *vscsi)
+{
+ long rc = ADAPT_SUCCESS;
+
+ switch (vscsi->state) {
+ case WAIT_ENABLED:
+ vscsi->state = PART_UP_WAIT_ENAB;
+ break;
+
+ case WAIT_CONNECTION:
+ rc = ibmvscsis_send_init_message(vscsi, INIT_COMPLETE_MSG);
+ switch (rc) {
+ case H_SUCCESS:
+ vscsi->state = CONNECTED;
+ break;
+
+ case H_PARAMETER:
+ dev_err(&vscsi->dev, "init_msg: failed to send, rc %ld\n",
+ rc);
+ ibmvscsis_post_disconnect(vscsi, ERR_DISCONNECT, 0);
+ break;
+
+ case H_DROPPED:
+ dev_err(&vscsi->dev, "init_msg: failed to send, rc %ld\n",
+ rc);
+ rc = ERROR;
+ ibmvscsis_post_disconnect(vscsi,
+ ERR_DISCONNECT_RECONNECT, 0);
+ break;
+
+ case H_CLOSED:
+ pr_warn("init_msg: failed to send, rc %ld\n", rc);
+ rc = 0;
+ break;
+ }
+ break;
+
+ case UNDEFINED:
+ rc = ERROR;
+ break;
+
+ case UNCONFIGURING:
+ break;
+
+ case PART_UP_WAIT_ENAB:
+ case CONNECTED:
+ case SRP_PROCESSING:
+ case WAIT_IDLE:
+ case NO_QUEUE:
+ case ERR_DISCONNECT:
+ case ERR_DISCONNECT_RECONNECT:
+ case ERR_DISCONNECTED:
+ default:
+ rc = ERROR;
+ dev_err(&vscsi->dev, "init_msg: invalid state %d to get init msg\n",
+ vscsi->state);
+ ibmvscsis_post_disconnect(vscsi, ERR_DISCONNECT_RECONNECT, 0);
+ break;
+ }
+
+ return rc;
+}
+
+/**
+ * ibmvscsis_init_msg() - Respond to an init message
+ * @vscsi: Pointer to our adapter structure
+ * @crq: Pointer to CRQ element containing the Init Message
+ *
+ * EXECUTION ENVIRONMENT:
+ * Interrupt, interrupt lock held
+ */
+static long ibmvscsis_init_msg(struct scsi_info *vscsi, struct viosrp_crq *crq)
+{
+ long rc = ADAPT_SUCCESS;
+
+ pr_debug("init_msg: state 0x%hx\n", vscsi->state);
+
+ rc = h_vioctl(vscsi->dds.unit_id, H_GET_PARTNER_INFO,
+ (u64)vscsi->map_ioba | ((u64)PAGE_SIZE << 32), 0, 0, 0,
+ 0);
+ if (rc == H_SUCCESS) {
+ vscsi->client_data.partition_number =
+ be64_to_cpu(*(u64 *)vscsi->map_buf);
+ pr_debug("init_msg, part num %d\n",
+ vscsi->client_data.partition_number);
+ } else {
+ pr_debug("init_msg h_vioctl rc %ld\n", rc);
+ rc = ADAPT_SUCCESS;
+ }
+
+ if (crq->format == INIT_MSG) {
+ rc = ibmvscsis_handle_init_msg(vscsi);
+ } else if (crq->format == INIT_COMPLETE_MSG) {
+ rc = ibmvscsis_handle_init_compl_msg(vscsi);
+ } else {
+ rc = ERROR;
+ dev_err(&vscsi->dev, "init_msg: invalid format %d\n",
+ (uint)crq->format);
+ ibmvscsis_post_disconnect(vscsi, ERR_DISCONNECT_RECONNECT, 0);
+ }
+
+ return rc;
+}
+
+/**
+ * ibmvscsis_parse_command() - Parse an element taken from the cmd rsp queue.
+ * @vscsi: Pointer to our adapter structure
+ * @crq: Pointer to CRQ element containing the SRP request
+ *
+ * This function will return success if the command queue element is valid
+ * and the srp iu or MAD request it pointed to was also valid. That does
+ * not mean that an error was not returned to the client.
+ *
+ * EXECUTION ENVIRONMENT:
+ * Interrupt, intr lock held
+ */
+static long ibmvscsis_parse_command(struct scsi_info *vscsi,
+ struct viosrp_crq *crq)
+{
+ long rc = ADAPT_SUCCESS;
+
+ switch (crq->valid) {
+ case VALID_CMD_RESP_EL:
+ switch (crq->format) {
+ case OS400_FORMAT:
+ case AIX_FORMAT:
+ case LINUX_FORMAT:
+ case MAD_FORMAT:
+ if (vscsi->flags & PROCESSING_MAD) {
+ rc = ERROR;
+ dev_err(&vscsi->dev, "parse_command: already processing mad\n");
+ ibmvscsis_post_disconnect(vscsi,
+ ERR_DISCONNECT_RECONNECT,
+ 0);
+ } else {
+ vscsi->flags |= PROCESSING_MAD;
+ rc = ibmvscsis_mad(vscsi, crq);
+ }
+ break;
+
+ case SRP_FORMAT:
+ ibmvscsis_srp_cmd(vscsi, crq);
+ break;
+
+ case MESSAGE_IN_CRQ:
+ if (crq->status == PING)
+ ibmvscsis_ping_response(vscsi);
+ break;
+
+ default:
+ dev_err(&vscsi->dev, "parse_command: invalid format %d\n",
+ (uint)crq->format);
+ ibmvscsis_post_disconnect(vscsi,
+ ERR_DISCONNECT_RECONNECT, 0);
+ break;
+ }
+ break;
+
+ case VALID_TRANS_EVENT:
+ rc = ibmvscsis_trans_event(vscsi, crq);
+ break;
+
+ case VALID_INIT_MSG:
+ rc = ibmvscsis_init_msg(vscsi, crq);
+ break;
+
+ default:
+ dev_err(&vscsi->dev, "parse_command: invalid valid field %d\n",
+ (uint)crq->valid);
+ ibmvscsis_post_disconnect(vscsi, ERR_DISCONNECT_RECONNECT, 0);
+ break;
+ }
+
+ /*
+ * Return only what the interrupt handler cares
+ * about. Most errors we keep right on trucking.
+ */
+ rc = vscsi->flags & SCHEDULE_DISCONNECT;
+
+ return rc;
+}
+
+static int read_dma_window(struct scsi_info *vscsi)
+{
+ struct vio_dev *vdev = vscsi->dma_dev;
+ const __be32 *dma_window;
+ const __be32 *prop;
+
+ /* TODO Using of_parse_dma_window would be better, but it doesn't give
+ * a way to read multiple windows without already knowing the size of
+ * a window or the number of windows.
+ */
+ dma_window = (const __be32 *)vio_get_attribute(vdev,
+ "ibm,my-dma-window",
+ NULL);
+ if (!dma_window) {
+ pr_err("Couldn't find ibm,my-dma-window property\n");
+ return -1;
+ }
+
+ vscsi->dds.window[LOCAL].liobn = be32_to_cpu(*dma_window);
+ dma_window++;
+
+ prop = (const __be32 *)vio_get_attribute(vdev, "ibm,#dma-address-cells",
+ NULL);
+ if (!prop) {
+ pr_warn("Couldn't find ibm,#dma-address-cells property\n");
+ dma_window++;
+ } else {
+ dma_window += be32_to_cpu(*prop);
+ }
+
+ prop = (const __be32 *)vio_get_attribute(vdev, "ibm,#dma-size-cells",
+ NULL);
+ if (!prop) {
+ pr_warn("Couldn't find ibm,#dma-size-cells property\n");
+ dma_window++;
+ } else {
+ dma_window += be32_to_cpu(*prop);
+ }
+
+ /* dma_window should point to the second window now */
+ vscsi->dds.window[REMOTE].liobn = be32_to_cpu(*dma_window);
+
+ return 0;
+}
+
+static struct ibmvscsis_tport *ibmvscsis_lookup_port(const char *name)
+{
+ struct ibmvscsis_tport *tport = NULL;
+ struct vio_dev *vdev;
+ struct scsi_info *vscsi;
+
+ spin_lock_bh(&ibmvscsis_dev_lock);
+ list_for_each_entry(vscsi, &ibmvscsis_dev_list, list) {
+ vdev = vscsi->dma_dev;
+ if (!strcmp(dev_name(&vdev->dev), name)) {
+ tport = &vscsi->tport;
+ break;
+ }
+ }
+ spin_unlock_bh(&ibmvscsis_dev_lock);
+
+ return tport;
+}
+
+/**
+ * ibmvscsis_parse_cmd() - Parse SRP Command
+ * @vscsi: Pointer to our adapter structure
+ * @cmd: Pointer to command element with SRP command
+ *
+ * Parse the srp command; if it is valid then submit it to tcm.
+ * Note: The return code does not reflect the status of the SCSI CDB.
+ *
+ * EXECUTION ENVIRONMENT:
+ * Process level
+ */
+static void ibmvscsis_parse_cmd(struct scsi_info *vscsi,
+ struct ibmvscsis_cmd *cmd)
+{
+ struct iu_entry *iue = cmd->iue;
+ struct srp_cmd *srp = (struct srp_cmd *)iue->sbuf->buf;
+ struct ibmvscsis_nexus *nexus;
+ u64 data_len = 0;
+ enum dma_data_direction dir;
+ int attr = 0;
+ int rc = 0;
+
+ nexus = vscsi->tport.ibmv_nexus;
+ /*
+ * additional length in bytes. Note that the SRP spec says that
+ * additional length is in 4-byte words, but technically the
+ * additional length field is only the upper 6 bits of the byte.
+ * The lower 2 bits are reserved. If the lower 2 bits are 0 (as
+ * all reserved fields should be), then interpreting the byte as
+ * an int will yield the length in bytes.
+ */
+ if (srp->add_cdb_len & 0x03) {
+ dev_err(&vscsi->dev, "parse_cmd: reserved bits set in IU\n");
+ spin_lock_bh(&vscsi->intr_lock);
+ ibmvscsis_post_disconnect(vscsi, ERR_DISCONNECT_RECONNECT, 0);
+ ibmvscsis_free_cmd_resources(vscsi, cmd);
+ spin_unlock_bh(&vscsi->intr_lock);
+ return;
+ }
+
+ if (srp_get_desc_table(srp, &dir, &data_len)) {
+ dev_err(&vscsi->dev, "0x%llx: parsing SRP descriptor table failed.\n",
+ srp->tag);
+ goto fail;
+ return;
+ }
+
+ cmd->rsp.sol_not = srp->sol_not;
+
+ switch (srp->task_attr) {
+ case SRP_SIMPLE_TASK:
+ attr = TCM_SIMPLE_TAG;
+ break;
+ case SRP_ORDERED_TASK:
+ attr = TCM_ORDERED_TAG;
+ break;
+ case SRP_HEAD_TASK:
+ attr = TCM_HEAD_TAG;
+ break;
+ case SRP_ACA_TASK:
+ attr = TCM_ACA_TAG;
+ break;
+ default:
+ dev_err(&vscsi->dev, "Invalid task attribute %d\n",
+ srp->task_attr);
+ goto fail;
+ }
+
+ cmd->se_cmd.tag = be64_to_cpu(srp->tag);
+
+ spin_lock_bh(&vscsi->intr_lock);
+ list_add_tail(&cmd->list, &vscsi->active_q);
+ spin_unlock_bh(&vscsi->intr_lock);
+
+ srp->lun.scsi_lun[0] &= 0x3f;
+
+ pr_debug("calling submit_cmd, se_cmd %p, lun 0x%llx, cdb 0x%x, attr:%d\n",
+ &cmd->se_cmd, scsilun_to_int(&srp->lun), (int)srp->cdb[0],
+ attr);
+
+ rc = target_submit_cmd(&cmd->se_cmd, nexus->se_sess, srp->cdb,
+ cmd->sense_buf, scsilun_to_int(&srp->lun),
+ data_len, attr, dir, 0);
+ if (rc) {
+ dev_err(&vscsi->dev, "target_submit_cmd failed, rc %d\n", rc);
+ goto fail;
+ }
+ return;
+
+fail:
+ spin_lock_bh(&vscsi->intr_lock);
+ ibmvscsis_post_disconnect(vscsi, ERR_DISCONNECT_RECONNECT, 0);
+ spin_unlock_bh(&vscsi->intr_lock);
+}
+
+/**
+ * ibmvscsis_parse_task() - Parse SRP Task Management Request
+ * @vscsi: Pointer to our adapter structure
+ * @cmd: Pointer to command element with SRP task management request
+ *
+ * Parse the srp task management request; if it is valid then submit it to tcm.
+ * Note: The return code does not reflect the status of the task management
+ * request.
+ *
+ * EXECUTION ENVIRONMENT:
+ * Processor level
+ */
+static void ibmvscsis_parse_task(struct scsi_info *vscsi,
+ struct ibmvscsis_cmd *cmd)
+{
+ struct iu_entry *iue = cmd->iue;
+ struct srp_tsk_mgmt *srp_tsk = &vio_iu(iue)->srp.tsk_mgmt;
+ int tcm_type;
+ u64 tag_to_abort = 0;
+ int rc = 0;
+ struct ibmvscsis_nexus *nexus;
+
+ nexus = vscsi->tport.ibmv_nexus;
+
+ cmd->rsp.sol_not = srp_tsk->sol_not;
+
+ switch (srp_tsk->tsk_mgmt_func) {
+ case SRP_TSK_ABORT_TASK:
+ tcm_type = TMR_ABORT_TASK;
+ tag_to_abort = be64_to_cpu(srp_tsk->task_tag);
+ break;
+ case SRP_TSK_ABORT_TASK_SET:
+ tcm_type = TMR_ABORT_TASK_SET;
+ break;
+ case SRP_TSK_CLEAR_TASK_SET:
+ tcm_type = TMR_CLEAR_TASK_SET;
+ break;
+ case SRP_TSK_LUN_RESET:
+ tcm_type = TMR_LUN_RESET;
+ break;
+ case SRP_TSK_CLEAR_ACA:
+ tcm_type = TMR_CLEAR_ACA;
+ break;
+ default:
+ dev_err(&vscsi->dev, "unknown task mgmt func %d\n",
+ srp_tsk->tsk_mgmt_func);
+ cmd->se_cmd.se_tmr_req->response =
+ TMR_TASK_MGMT_FUNCTION_NOT_SUPPORTED;
+ rc = -1;
+ break;
+ }
+
+ if (!rc) {
+ cmd->se_cmd.tag = be64_to_cpu(srp_tsk->tag);
+
+ spin_lock_bh(&vscsi->intr_lock);
+ list_add_tail(&cmd->list, &vscsi->active_q);
+ spin_unlock_bh(&vscsi->intr_lock);
+
+ srp_tsk->lun.scsi_lun[0] &= 0x3f;
+
+ pr_debug("calling submit_tmr, func %d\n",
+ srp_tsk->tsk_mgmt_func);
+ rc = target_submit_tmr(&cmd->se_cmd, nexus->se_sess, NULL,
+ scsilun_to_int(&srp_tsk->lun), srp_tsk,
+ tcm_type, GFP_KERNEL, tag_to_abort, 0);
+ if (rc) {
+ dev_err(&vscsi->dev, "target_submit_tmr failed, rc %d\n",
+ rc);
+ cmd->se_cmd.se_tmr_req->response =
+ TMR_FUNCTION_REJECTED;
+ }
+ }
+
+ if (rc)
+ transport_send_check_condition_and_sense(&cmd->se_cmd, 0, 0);
+}
+
+static void ibmvscsis_scheduler(struct work_struct *work)
+{
+ struct ibmvscsis_cmd *cmd = container_of(work, struct ibmvscsis_cmd,
+ work);
+ struct scsi_info *vscsi = cmd->adapter;
+
+ spin_lock_bh(&vscsi->intr_lock);
+
+ /* Remove from schedule_q */
+ list_del(&cmd->list);
+
+ /* Don't submit cmd if we're disconnecting */
+ if (vscsi->flags & (SCHEDULE_DISCONNECT | DISCONNECT_SCHEDULED)) {
+ ibmvscsis_free_cmd_resources(vscsi, cmd);
+
+ /* ibmvscsis_disconnect might be waiting for us */
+ if (list_empty(&vscsi->active_q) &&
+ list_empty(&vscsi->schedule_q) &&
+ (vscsi->flags & WAIT_FOR_IDLE)) {
+ vscsi->flags &= ~WAIT_FOR_IDLE;
+ complete(&vscsi->wait_idle);
+ }
+
+ spin_unlock_bh(&vscsi->intr_lock);
+ return;
+ }
+
+ spin_unlock_bh(&vscsi->intr_lock);
+
+ switch (cmd->type) {
+ case SCSI_CDB:
+ ibmvscsis_parse_cmd(vscsi, cmd);
+ break;
+ case TASK_MANAGEMENT:
+ ibmvscsis_parse_task(vscsi, cmd);
+ break;
+ default:
+ dev_err(&vscsi->dev, "scheduler, invalid cmd type %d\n",
+ cmd->type);
+ spin_lock_bh(&vscsi->intr_lock);
+ ibmvscsis_free_cmd_resources(vscsi, cmd);
+ spin_unlock_bh(&vscsi->intr_lock);
+ break;
+ }
+}
+
+static int ibmvscsis_alloc_cmds(struct scsi_info *vscsi, int num)
+{
+ struct ibmvscsis_cmd *cmd;
+ int i;
+
+ INIT_LIST_HEAD(&vscsi->free_cmd);
+ vscsi->cmd_pool = kcalloc(num, sizeof(struct ibmvscsis_cmd),
+ GFP_KERNEL);
+ if (!vscsi->cmd_pool)
+ return -ENOMEM;
+
+ for (i = 0, cmd = (struct ibmvscsis_cmd *)vscsi->cmd_pool; i < num;
+ i++, cmd++) {
+ cmd->adapter = vscsi;
+ INIT_WORK(&cmd->work, ibmvscsis_scheduler);
+ list_add_tail(&cmd->list, &vscsi->free_cmd);
+ }
+
+ return 0;
+}
+
+static void ibmvscsis_free_cmds(struct scsi_info *vscsi)
+{
+ kfree(vscsi->cmd_pool);
+ vscsi->cmd_pool = NULL;
+ INIT_LIST_HEAD(&vscsi->free_cmd);
+}
+
+/**
+ * ibmvscsis_service_wait_q() - Service Waiting Queue
+ * @timer: Pointer to timer which has expired
+ *
+ * This routine is called when the timer pops to service the waiting
+ * queue. Elements on the queue have completed, their responses have been
+ * copied to the client, but the client's response queue was full so
+ * the queue message could not be sent. The routine grabs the proper locks
+ * and calls send messages.
+ *
+ * EXECUTION ENVIRONMENT:
+ * called at interrupt level
+ */
+static enum hrtimer_restart ibmvscsis_service_wait_q(struct hrtimer *timer)
+{
+ struct timer_cb *p_timer = container_of(timer, struct timer_cb, timer);
+ struct scsi_info *vscsi = container_of(p_timer, struct scsi_info,
+ rsp_q_timer);
+
+ spin_lock_bh(&vscsi->intr_lock);
+ p_timer->timer_pops += 1;
+ p_timer->started = false;
+ ibmvscsis_send_messages(vscsi);
+ spin_unlock_bh(&vscsi->intr_lock);
+
+ return HRTIMER_NORESTART;
+}
+
+static long ibmvscsis_alloctimer(struct scsi_info *vscsi)
+{
+ struct timer_cb *p_timer;
+
+ p_timer = &vscsi->rsp_q_timer;
+ hrtimer_init(&p_timer->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
+
+ p_timer->timer.function = ibmvscsis_service_wait_q;
+ p_timer->started = false;
+ p_timer->timer_pops = 0;
+
+ return ADAPT_SUCCESS;
+}
+
+static void ibmvscsis_freetimer(struct scsi_info *vscsi)
+{
+ struct timer_cb *p_timer;
+
+ p_timer = &vscsi->rsp_q_timer;
+
+ (void)hrtimer_cancel(&p_timer->timer);
+
+ p_timer->started = false;
+ p_timer->timer_pops = 0;
+}
+
+static irqreturn_t ibmvscsis_interrupt(int dummy, void *data)
+{
+ struct scsi_info *vscsi = data;
+
+ vio_disable_interrupts(vscsi->dma_dev);
+ tasklet_schedule(&vscsi->work_task);
+
+ return IRQ_HANDLED;
+}
+
+/**
+ * ibmvscsis_check_q() - Helper function to Check Init Message Valid
+ * @vscsi: Pointer to our adapter structure
+ *
+ * Checks if a initialize message was queued by the initiatior
+ * while the timing window was open. This function is called from
+ * probe after the CRQ is created and interrupts are enabled.
+ * It would only be used by adapters who wait for some event before
+ * completing the init handshake with the client. For ibmvscsi, this
+ * event is waiting for the port to be enabled.
+ *
+ * EXECUTION ENVIRONMENT:
+ * Process level only, interrupt lock held
+ */
+static long ibmvscsis_check_q(struct scsi_info *vscsi)
+{
+ uint format;
+ long rc;
+
+ rc = ibmvscsis_check_init_msg(vscsi, &format);
+ if (rc)
+ ibmvscsis_post_disconnect(vscsi, ERR_DISCONNECT_RECONNECT, 0);
+ else if (format == UNUSED_FORMAT)
+ vscsi->state = WAIT_ENABLED;
+ else
+ vscsi->state = PART_UP_WAIT_ENAB;
+
+ return rc;
+}
+
+/**
+ * ibmvscsis_enable_change_state() - Set new state based on enabled status
+ * @vscsi: Pointer to our adapter structure
+ *
+ * This function determines our new state now that we are enabled. This
+ * may involve sending an Init Complete message to the client.
+ *
+ * Must be called with interrupt lock held.
+ */
+static long ibmvscsis_enable_change_state(struct scsi_info *vscsi)
+{
+ long rc = ADAPT_SUCCESS;
+
+handle_state_change:
+ switch (vscsi->state) {
+ case WAIT_ENABLED:
+ rc = ibmvscsis_send_init_message(vscsi, INIT_MSG);
+ switch (rc) {
+ case H_SUCCESS:
+ case H_DROPPED:
+ case H_CLOSED:
+ vscsi->state = WAIT_CONNECTION;
+ rc = ADAPT_SUCCESS;
+ break;
+
+ case H_PARAMETER:
+ break;
+
+ case H_HARDWARE:
+ break;
+
+ default:
+ vscsi->state = UNDEFINED;
+ rc = H_HARDWARE;
+ break;
+ }
+ break;
+ case PART_UP_WAIT_ENAB:
+ rc = ibmvscsis_send_init_message(vscsi, INIT_COMPLETE_MSG);
+ switch (rc) {
+ case H_SUCCESS:
+ vscsi->state = CONNECTED;
+ rc = ADAPT_SUCCESS;
+ break;
+
+ case H_DROPPED:
+ case H_CLOSED:
+ vscsi->state = WAIT_ENABLED;
+ goto handle_state_change;
+
+ case H_PARAMETER:
+ break;
+
+ case H_HARDWARE:
+ break;
+
+ default:
+ rc = H_HARDWARE;
+ break;
+ }
+ break;
+
+ case WAIT_CONNECTION:
+ case WAIT_IDLE:
+ case SRP_PROCESSING:
+ case CONNECTED:
+ rc = ADAPT_SUCCESS;
+ break;
+ /* should not be able to get here */
+ case UNCONFIGURING:
+ rc = ERROR;
+ vscsi->state = UNDEFINED;
+ break;
+
+ /* driver should never allow this to happen */
+ case ERR_DISCONNECT:
+ case ERR_DISCONNECT_RECONNECT:
+ default:
+ dev_err(&vscsi->dev, "in invalid state %d during enable_change_state\n",
+ vscsi->state);
+ rc = ADAPT_SUCCESS;
+ break;
+ }
+
+ return rc;
+}
+
+/**
+ * ibmvscsis_create_command_q() - Create Command Queue
+ * @vscsi: Pointer to our adapter structure
+ * @num_cmds: Currently unused. In the future, may be used to determine
+ * the size of the CRQ.
+ *
+ * Allocates memory for command queue maps remote memory into an ioba
+ * initializes the command response queue
+ *
+ * EXECUTION ENVIRONMENT:
+ * Process level only
+ */
+static long ibmvscsis_create_command_q(struct scsi_info *vscsi, int num_cmds)
+{
+ long rc = 0;
+ int pages;
+ struct vio_dev *vdev = vscsi->dma_dev;
+
+ /* We might support multiple pages in the future, but just 1 for now */
+ pages = 1;
+
+ vscsi->cmd_q.size = pages;
+
+ vscsi->cmd_q.base_addr =
+ (struct viosrp_crq *)get_zeroed_page(GFP_KERNEL);
+ if (!vscsi->cmd_q.base_addr)
+ return -ENOMEM;
+
+ vscsi->cmd_q.mask = ((uint)pages * CRQ_PER_PAGE) - 1;
+
+ vscsi->cmd_q.crq_token = dma_map_single(&vdev->dev,
+ vscsi->cmd_q.base_addr,
+ PAGE_SIZE, DMA_BIDIRECTIONAL);
+ if (dma_mapping_error(&vdev->dev, vscsi->cmd_q.crq_token)) {
+ free_page((unsigned long)vscsi->cmd_q.base_addr);
+ return -ENOMEM;
+ }
+
+ rc = h_reg_crq(vscsi->dds.unit_id, vscsi->cmd_q.crq_token, PAGE_SIZE);
+ if (rc) {
+ if (rc == H_CLOSED) {
+ vscsi->state = WAIT_ENABLED;
+ rc = 0;
+ } else {
+ dma_unmap_single(&vdev->dev, vscsi->cmd_q.crq_token,
+ PAGE_SIZE, DMA_BIDIRECTIONAL);
+ free_page((unsigned long)vscsi->cmd_q.base_addr);
+ rc = -ENODEV;
+ }
+ } else {
+ vscsi->state = WAIT_ENABLED;
+ }
+
+ return rc;
+}
+
+/**
+ * ibmvscsis_destroy_command_q - Destroy Command Queue
+ * @vscsi: Pointer to our adapter structure
+ *
+ * Releases memory for command queue and unmaps mapped remote memory.
+ *
+ * EXECUTION ENVIRONMENT:
+ * Process level only
+ */
+static void ibmvscsis_destroy_command_q(struct scsi_info *vscsi)
+{
+ dma_unmap_single(&vscsi->dma_dev->dev, vscsi->cmd_q.crq_token,
+ PAGE_SIZE, DMA_BIDIRECTIONAL);
+ free_page((unsigned long)vscsi->cmd_q.base_addr);
+ vscsi->cmd_q.base_addr = NULL;
+ vscsi->state = NO_QUEUE;
+}
+
+static u8 ibmvscsis_fast_fail(struct scsi_info *vscsi,
+ struct ibmvscsis_cmd *cmd)
+{
+ struct iu_entry *iue = cmd->iue;
+ struct se_cmd *se_cmd = &cmd->se_cmd;
+ struct srp_cmd *srp = (struct srp_cmd *)iue->sbuf->buf;
+ struct scsi_sense_hdr sshdr;
+ u8 rc = se_cmd->scsi_status;
+
+ if (vscsi->fast_fail && (READ_CMD(srp->cdb) || WRITE_CMD(srp->cdb)))
+ if (scsi_normalize_sense(se_cmd->sense_buffer,
+ se_cmd->scsi_sense_length, &sshdr))
+ if (sshdr.sense_key == HARDWARE_ERROR &&
+ (se_cmd->residual_count == 0 ||
+ se_cmd->residual_count == se_cmd->data_length)) {
+ rc = NO_SENSE;
+ cmd->flags |= CMD_FAST_FAIL;
+ }
+
+ return rc;
+}
+
+/**
+ * srp_build_response() - Build an SRP response buffer
+ * @vscsi: Pointer to our adapter structure
+ * @cmd: Pointer to command for which to send the response
+ * @len_p: Where to return the length of the IU response sent. This
+ * is needed to construct the CRQ response.
+ *
+ * Build the SRP response buffer and copy it to the client's memory space.
+ */
+static long srp_build_response(struct scsi_info *vscsi,
+ struct ibmvscsis_cmd *cmd, uint *len_p)
+{
+ struct iu_entry *iue = cmd->iue;
+ struct se_cmd *se_cmd = &cmd->se_cmd;
+ struct srp_rsp *rsp;
+ uint len;
+ u32 rsp_code;
+ char *data;
+ u32 *tsk_status;
+ long rc = ADAPT_SUCCESS;
+
+ spin_lock_bh(&vscsi->intr_lock);
+
+ rsp = &vio_iu(iue)->srp.rsp;
+ len = sizeof(*rsp);
+ memset(rsp, 0, len);
+ data = rsp->data;
+
+ rsp->opcode = SRP_RSP;
+
+ if (vscsi->credit > 0 && vscsi->state == SRP_PROCESSING)
+ rsp->req_lim_delta = cpu_to_be32(vscsi->credit);
+ else
+ rsp->req_lim_delta = cpu_to_be32(1 + vscsi->credit);
+ rsp->tag = cmd->rsp.tag;
+ rsp->flags = 0;
+
+ if (cmd->type == SCSI_CDB) {
+ rsp->status = ibmvscsis_fast_fail(vscsi, cmd);
+ if (rsp->status) {
+ pr_debug("build_resp: cmd %p, scsi status %d\n", cmd,
+ (int)rsp->status);
+ ibmvscsis_determine_resid(se_cmd, rsp);
+ if (se_cmd->scsi_sense_length && se_cmd->sense_buffer) {
+ rsp->sense_data_len =
+ cpu_to_be32(se_cmd->scsi_sense_length);
+ rsp->flags |= SRP_RSP_FLAG_SNSVALID;
+ len += se_cmd->scsi_sense_length;
+ memcpy(data, se_cmd->sense_buffer,
+ se_cmd->scsi_sense_length);
+ }
+ rsp->sol_not = (cmd->rsp.sol_not & UCSOLNT) >>
+ UCSOLNT_RESP_SHIFT;
+ } else if (cmd->flags & CMD_FAST_FAIL) {
+ pr_debug("build_resp: cmd %p, fast fail\n", cmd);
+ rsp->sol_not = (cmd->rsp.sol_not & UCSOLNT) >>
+ UCSOLNT_RESP_SHIFT;
+ } else {
+ rsp->sol_not = (cmd->rsp.sol_not & SCSOLNT) >>
+ SCSOLNT_RESP_SHIFT;
+ }
+ } else {
+ /* this is task management */
+ rsp->status = 0;
+ rsp->resp_data_len = cpu_to_be32(4);
+ rsp->flags |= SRP_RSP_FLAG_RSPVALID;
+
+ switch (se_cmd->se_tmr_req->response) {
+ case TMR_FUNCTION_COMPLETE:
+ case TMR_TASK_DOES_NOT_EXIST:
+ rsp_code = SRP_TASK_MANAGEMENT_FUNCTION_COMPLETE;
+ rsp->sol_not = (cmd->rsp.sol_not & SCSOLNT) >>
+ SCSOLNT_RESP_SHIFT;
+ break;
+ case TMR_TASK_MGMT_FUNCTION_NOT_SUPPORTED:
+ case TMR_LUN_DOES_NOT_EXIST:
+ rsp_code = SRP_TASK_MANAGEMENT_FUNCTION_NOT_SUPPORTED;
+ rsp->sol_not = (cmd->rsp.sol_not & UCSOLNT) >>
+ UCSOLNT_RESP_SHIFT;
+ break;
+ case TMR_FUNCTION_FAILED:
+ case TMR_FUNCTION_REJECTED:
+ default:
+ rsp_code = SRP_TASK_MANAGEMENT_FUNCTION_FAILED;
+ rsp->sol_not = (cmd->rsp.sol_not & UCSOLNT) >>
+ UCSOLNT_RESP_SHIFT;
+ break;
+ }
+
+ tsk_status = (u32 *)data;
+ *tsk_status = cpu_to_be32(rsp_code);
+ data = (char *)(tsk_status + 1);
+ len += 4;
+ }
+
+ dma_wmb();
+ rc = h_copy_rdma(len, vscsi->dds.window[LOCAL].liobn, iue->sbuf->dma,
+ vscsi->dds.window[REMOTE].liobn,
+ be64_to_cpu(iue->remote_token));
+
+ switch (rc) {
+ case H_SUCCESS:
+ vscsi->credit = 0;
+ *len_p = len;
+ break;
+ case H_PERMISSION:
+ if (connection_broken(vscsi))
+ vscsi->flags |= RESPONSE_Q_DOWN | CLIENT_FAILED;
+
+ dev_err(&vscsi->dev, "build_response: error copying to client, rc %ld, flags 0x%x, state 0x%hx\n",
+ rc, vscsi->flags, vscsi->state);
+ break;
+ case H_SOURCE_PARM:
+ case H_DEST_PARM:
+ default:
+ dev_err(&vscsi->dev, "build_response: error copying to client, rc %ld\n",
+ rc);
+ break;
+ }
+
+ spin_unlock_bh(&vscsi->intr_lock);
+
+ return rc;
+}
+
+static int ibmvscsis_rdma(struct ibmvscsis_cmd *cmd, struct scatterlist *sg,
+ int nsg, struct srp_direct_buf *md, int nmd,
+ enum dma_data_direction dir, unsigned int bytes)
+{
+ struct iu_entry *iue = cmd->iue;
+ struct srp_target *target = iue->target;
+ struct scsi_info *vscsi = target->ldata;
+ struct scatterlist *sgp;
+ dma_addr_t client_ioba, server_ioba;
+ ulong buf_len;
+ ulong client_len, server_len;
+ int md_idx;
+ long tx_len;
+ long rc = 0;
+
+ pr_debug("rdma: dir %d, bytes 0x%x\n", dir, bytes);
+
+ if (bytes == 0)
+ return 0;
+
+ sgp = sg;
+ client_len = 0;
+ server_len = 0;
+ md_idx = 0;
+ tx_len = bytes;
+
+ do {
+ if (client_len == 0) {
+ if (md_idx >= nmd) {
+ dev_err(&vscsi->dev, "rdma: ran out of client memory descriptors\n");
+ rc = -EIO;
+ break;
+ }
+ client_ioba = be64_to_cpu(md[md_idx].va);
+ client_len = be32_to_cpu(md[md_idx].len);
+ }
+ if (server_len == 0) {
+ if (!sgp) {
+ dev_err(&vscsi->dev, "rdma: ran out of scatter/gather list\n");
+ rc = -EIO;
+ break;
+ }
+ server_ioba = sg_dma_address(sgp);
+ server_len = sg_dma_len(sgp);
+ }
+
+ buf_len = tx_len;
+
+ if (buf_len > client_len)
+ buf_len = client_len;
+
+ if (buf_len > server_len)
+ buf_len = server_len;
+
+ if (buf_len > max_vdma_size)
+ buf_len = max_vdma_size;
+
+ if (dir == DMA_TO_DEVICE) {
+ /* read from client */
+ rc = h_copy_rdma(buf_len,
+ vscsi->dds.window[REMOTE].liobn,
+ client_ioba,
+ vscsi->dds.window[LOCAL].liobn,
+ server_ioba);
+ } else {
+ /* write to client */
+ struct srp_cmd *srp = (struct srp_cmd *)iue->sbuf->buf;
+
+ if (!READ_CMD(srp->cdb))
+ print_hex_dump_bytes(" data:", DUMP_PREFIX_NONE,
+ sg_virt(sgp), buf_len);
+ /* The h_copy_rdma will cause phyp, running in another
+ * partition, to read memory, so we need to make sure
+ * the data has been written out, hence these syncs.
+ */
+ /* ensure that everything is in memory */
+ isync();
+ /* ensure that memory has been made visible */
+ dma_wmb();
+ rc = h_copy_rdma(buf_len,
+ vscsi->dds.window[LOCAL].liobn,
+ server_ioba,
+ vscsi->dds.window[REMOTE].liobn,
+ client_ioba);
+ }
+ switch (rc) {
+ case H_SUCCESS:
+ break;
+ case H_PERMISSION:
+ case H_SOURCE_PARM:
+ case H_DEST_PARM:
+ if (connection_broken(vscsi)) {
+ spin_lock_bh(&vscsi->intr_lock);
+ vscsi->flags |=
+ (RESPONSE_Q_DOWN | CLIENT_FAILED);
+ spin_unlock_bh(&vscsi->intr_lock);
+ }
+ dev_err(&vscsi->dev, "rdma: h_copy_rdma failed, rc %ld\n",
+ rc);
+ break;
+
+ default:
+ dev_err(&vscsi->dev, "rdma: unknown error %ld from h_copy_rdma\n",
+ rc);
+ break;
+ }
+
+ if (!rc) {
+ tx_len -= buf_len;
+ if (tx_len) {
+ client_len -= buf_len;
+ if (client_len == 0)
+ md_idx++;
+ else
+ client_ioba += buf_len;
+
+ server_len -= buf_len;
+ if (server_len == 0)
+ sgp = sg_next(sgp);
+ else
+ server_ioba += buf_len;
+ } else {
+ break;
+ }
+ }
+ } while (!rc);
+
+ return rc;
+}
+
+/**
+ * ibmvscsis_handle_crq() - Handle CRQ
+ * @data: Pointer to our adapter structure
+ *
+ * Read the command elements from the command queue and copy the payloads
+ * associated with the command elements to local memory and execute the
+ * SRP requests.
+ *
+ * Note: this is an edge triggered interrupt. It can not be shared.
+ */
+static void ibmvscsis_handle_crq(unsigned long data)
+{
+ struct scsi_info *vscsi = (struct scsi_info *)data;
+ struct viosrp_crq *crq;
+ long rc;
+ bool ack = true;
+ volatile u8 valid;
+
+ spin_lock_bh(&vscsi->intr_lock);
+
+ pr_debug("got interrupt\n");
+
+ /*
+ * if we are in a path where we are waiting for all pending commands
+ * to complete because we received a transport event and anything in
+ * the command queue is for a new connection, do nothing
+ */
+ if (TARGET_STOP(vscsi)) {
+ vio_enable_interrupts(vscsi->dma_dev);
+
+ pr_debug("handle_crq, don't process: flags 0x%x, state 0x%hx\n",
+ vscsi->flags, vscsi->state);
+ spin_unlock_bh(&vscsi->intr_lock);
+ return;
+ }
+
+ rc = vscsi->flags & SCHEDULE_DISCONNECT;
+ crq = vscsi->cmd_q.base_addr + vscsi->cmd_q.index;
+ valid = crq->valid;
+ dma_rmb();
+
+ while (valid) {
+ /*
+ * These are edege triggered interrupts. After dropping out of
+ * the while loop, the code must check for work since an
+ * interrupt could be lost, and an elment be left on the queue,
+ * hence the label.
+ */
+cmd_work:
+ vscsi->cmd_q.index =
+ (vscsi->cmd_q.index + 1) & vscsi->cmd_q.mask;
+
+ if (!rc) {
+ rc = ibmvscsis_parse_command(vscsi, crq);
+ } else {
+ if ((uint)crq->valid == VALID_TRANS_EVENT) {
+ /*
+ * must service the transport layer events even
+ * in an error state, dont break out until all
+ * the consecutive transport events have been
+ * processed
+ */
+ rc = ibmvscsis_trans_event(vscsi, crq);
+ } else if (vscsi->flags & TRANS_EVENT) {
+ /*
+ * if a tranport event has occurred leave
+ * everything but transport events on the queue
+ */
+ pr_debug("handle_crq, ignoring\n");
+
+ /*
+ * need to decrement the queue index so we can
+ * look at the elment again
+ */
+ if (vscsi->cmd_q.index)
+ vscsi->cmd_q.index -= 1;
+ else
+ /*
+ * index is at 0 it just wrapped.
+ * have it index last element in q
+ */
+ vscsi->cmd_q.index = vscsi->cmd_q.mask;
+ break;
+ }
+ }
+
+ crq->valid = INVALIDATE_CMD_RESP_EL;
+
+ crq = vscsi->cmd_q.base_addr + vscsi->cmd_q.index;
+ valid = crq->valid;
+ dma_rmb();
+ }
+
+ if (!rc) {
+ if (ack) {
+ vio_enable_interrupts(vscsi->dma_dev);
+ ack = false;
+ pr_debug("handle_crq, reenabling interrupts\n");
+ }
+ valid = crq->valid;
+ dma_rmb();
+ if (valid)
+ goto cmd_work;
+ } else {
+ pr_debug("handle_crq, error: flags 0x%x, state 0x%hx, crq index 0x%x\n",
+ vscsi->flags, vscsi->state, vscsi->cmd_q.index);
+ }
+
+ pr_debug("Leaving handle_crq: schedule_q empty %d, flags 0x%x, state 0x%hx\n",
+ (int)list_empty(&vscsi->schedule_q), vscsi->flags,
+ vscsi->state);
+
+ spin_unlock_bh(&vscsi->intr_lock);
+}
+
+static int ibmvscsis_probe(struct vio_dev *vdev,
+ const struct vio_device_id *id)
+{
+ struct scsi_info *vscsi;
+ int rc = 0;
+ long hrc = 0;
+ char wq_name[24];
+
+ vscsi = kzalloc(sizeof(*vscsi), GFP_KERNEL);
+ if (!vscsi) {
+ rc = -ENOMEM;
+ pr_err("probe: allocation of adapter failed\n");
+ return rc;
+ }
+
+ vscsi->dma_dev = vdev;
+ vscsi->dev = vdev->dev;
+ INIT_LIST_HEAD(&vscsi->schedule_q);
+ INIT_LIST_HEAD(&vscsi->waiting_rsp);
+ INIT_LIST_HEAD(&vscsi->active_q);
+
+ snprintf(vscsi->tport.tport_name, 256, "%s", dev_name(&vdev->dev));
+
+ pr_debug("probe tport_name: %s\n", vscsi->tport.tport_name);
+
+ rc = read_dma_window(vscsi);
+ if (rc)
+ goto free_adapter;
+ pr_debug("Probe: liobn 0x%x, riobn 0x%x\n",
+ vscsi->dds.window[LOCAL].liobn,
+ vscsi->dds.window[REMOTE].liobn);
+
+ strcpy(vscsi->eye, "VSCSI ");
+ strncat(vscsi->eye, vdev->name, MAX_EYE);
+
+ vscsi->dds.unit_id = vdev->unit_address;
+
+ spin_lock_bh(&ibmvscsis_dev_lock);
+ list_add_tail(&vscsi->list, &ibmvscsis_dev_list);
+ spin_unlock_bh(&ibmvscsis_dev_lock);
+
+ /*
+ * TBD: How do we determine # of cmds to request? Do we know how
+ * many "children" we have?
+ */
+ vscsi->request_limit = INITIAL_SRP_LIMIT;
+ rc = srp_target_alloc(&vscsi->target, &vdev->dev, vscsi->request_limit,
+ SRP_MAX_IU_LEN);
+ if (rc)
+ goto rem_list;
+
+ vscsi->target.ldata = vscsi;
+
+ rc = ibmvscsis_alloc_cmds(vscsi, vscsi->request_limit);
+ if (rc) {
+ dev_err(&vscsi->dev, "alloc_cmds failed, rc %d, num %d\n",
+ rc, vscsi->request_limit);
+ goto free_target;
+ }
+
+ /*
+ * Note: the lock is used in freeing timers, so must initialize
+ * first so that ordering in case of error is correct.
+ */
+ spin_lock_init(&vscsi->intr_lock);
+
+ rc = ibmvscsis_alloctimer(vscsi);
+ if (rc) {
+ dev_err(&vscsi->dev, "probe: alloctimer failed, rc %d\n", rc);
+ goto free_cmds;
+ }
+
+ rc = ibmvscsis_create_command_q(vscsi, 256);
+ if (rc) {
+ dev_err(&vscsi->dev, "probe: create_command_q failed, rc %d\n",
+ rc);
+ goto free_timer;
+ }
+
+ vscsi->map_buf = kzalloc(PAGE_SIZE, GFP_KERNEL);
+ if (!vscsi->map_buf) {
+ rc = -ENOMEM;
+ dev_err(&vscsi->dev, "probe: allocating cmd buffer failed\n");
+ goto destroy_queue;
+ }
+
+ vscsi->map_ioba = dma_map_single(&vdev->dev, vscsi->map_buf, PAGE_SIZE,
+ DMA_BIDIRECTIONAL);
+ if (dma_mapping_error(&vdev->dev, vscsi->map_ioba)) {
+ dev_err(&vscsi->dev, "probe: error mapping command buffer\n");
+ goto free_buf;
+ }
+
+ hrc = h_vioctl(vscsi->dds.unit_id, H_GET_PARTNER_INFO,
+ (u64)vscsi->map_ioba | ((u64)PAGE_SIZE << 32), 0, 0, 0,
+ 0);
+ if (hrc == H_SUCCESS)
+ vscsi->client_data.partition_number =
+ be64_to_cpu(*(u64 *)vscsi->map_buf);
+ /*
+ * We expect the VIOCTL to fail if we're configured as "any
+ * client can connect" and the client isn't activated yet.
+ * We'll make the call again when he sends an init msg.
+ */
+ pr_debug("probe hrc %ld, client partition num %d\n",
+ hrc, vscsi->client_data.partition_number);
+
+ tasklet_init(&vscsi->work_task, ibmvscsis_handle_crq,
+ (unsigned long)vscsi);
+
+ init_completion(&vscsi->wait_idle);
+
+ snprintf(wq_name, 24, "ibmvscsis%s", dev_name(&vdev->dev));
+ vscsi->work_q = create_workqueue(wq_name);
+ if (!vscsi->work_q) {
+ rc = -ENOMEM;
+ dev_err(&vscsi->dev, "create_workqueue failed\n");
+ goto unmap_buf;
+ }
+
+ rc = request_irq(vdev->irq, ibmvscsis_interrupt, 0, "ibmvscsis", vscsi);
+ if (rc) {
+ rc = -EPERM;
+ dev_err(&vscsi->dev, "probe: request_irq failed, rc %d\n", rc);
+ goto destroy_WQ;
+ }
+
+ spin_lock_bh(&vscsi->intr_lock);
+ vio_enable_interrupts(vdev);
+ if (rc) {
+ dev_err(&vscsi->dev, "enabling interrupts failed, rc %d\n", rc);
+ rc = -ENODEV;
+ spin_unlock_bh(&vscsi->intr_lock);
+ goto free_irq;
+ }
+
+ if (ibmvscsis_check_q(vscsi)) {
+ rc = ERROR;
+ dev_err(&vscsi->dev, "probe: check_q failed, rc %d\n", rc);
+ spin_unlock_bh(&vscsi->intr_lock);
+ goto disable_interrupt;
+ }
+ spin_unlock_bh(&vscsi->intr_lock);
+
+ dev_set_drvdata(&vdev->dev, vscsi);
+
+ return 0;
+
+disable_interrupt:
+ vio_disable_interrupts(vdev);
+free_irq:
+ free_irq(vdev->irq, vscsi);
+destroy_WQ:
+ destroy_workqueue(vscsi->work_q);
+unmap_buf:
+ dma_unmap_single(&vdev->dev, vscsi->map_ioba, PAGE_SIZE,
+ DMA_BIDIRECTIONAL);
+free_buf:
+ kfree(vscsi->map_buf);
+destroy_queue:
+ tasklet_kill(&vscsi->work_task);
+ ibmvscsis_unregister_command_q(vscsi);
+ ibmvscsis_destroy_command_q(vscsi);
+free_timer:
+ ibmvscsis_freetimer(vscsi);
+free_cmds:
+ ibmvscsis_free_cmds(vscsi);
+free_target:
+ srp_target_free(&vscsi->target);
+rem_list:
+ spin_lock_bh(&ibmvscsis_dev_lock);
+ list_del(&vscsi->list);
+ spin_unlock_bh(&ibmvscsis_dev_lock);
+free_adapter:
+ kfree(vscsi);
+
+ return rc;
+}
+
+static int ibmvscsis_remove(struct vio_dev *vdev)
+{
+ struct scsi_info *vscsi = dev_get_drvdata(&vdev->dev);
+
+ pr_debug("remove (%s)\n", dev_name(&vscsi->dma_dev->dev));
+
+ /*
+ * TBD: Need to handle if there are commands on the waiting_rsp q
+ * Actually, can there still be cmds outstanding to tcm?
+ */
+
+ vio_disable_interrupts(vdev);
+ free_irq(vdev->irq, vscsi);
+ destroy_workqueue(vscsi->work_q);
+ dma_unmap_single(&vdev->dev, vscsi->map_ioba, PAGE_SIZE,
+ DMA_BIDIRECTIONAL);
+ kfree(vscsi->map_buf);
+ tasklet_kill(&vscsi->work_task);
+ ibmvscsis_unregister_command_q(vscsi);
+ ibmvscsis_destroy_command_q(vscsi);
+ ibmvscsis_freetimer(vscsi);
+ ibmvscsis_free_cmds(vscsi);
+ srp_target_free(&vscsi->target);
+ spin_lock_bh(&ibmvscsis_dev_lock);
+ list_del(&vscsi->list);
+ spin_unlock_bh(&ibmvscsis_dev_lock);
+ kfree(vscsi);
+
+ return 0;
+}
+
+static ssize_t system_id_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%s\n", system_id);
+}
+
+static ssize_t partition_number_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%x\n", partition_number);
+}
+
+static ssize_t unit_address_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct scsi_info *vscsi = container_of(dev, struct scsi_info, dev);
+
+ return snprintf(buf, PAGE_SIZE, "%x\n", vscsi->dma_dev->unit_address);
+}
+
+static int ibmvscsis_get_system_info(void)
+{
+ struct device_node *rootdn, *vdevdn;
+ const char *id, *model, *name;
+ const uint *num;
+
+ rootdn = of_find_node_by_path("/");
+ if (!rootdn)
+ return -ENOENT;
+
+ model = of_get_property(rootdn, "model", NULL);
+ id = of_get_property(rootdn, "system-id", NULL);
+ if (model && id)
+ snprintf(system_id, sizeof(system_id), "%s-%s", model, id);
+
+ name = of_get_property(rootdn, "ibm,partition-name", NULL);
+ if (name)
+ strncpy(partition_name, name, sizeof(partition_name));
+
+ num = of_get_property(rootdn, "ibm,partition-no", NULL);
+ if (num)
+ partition_number = *num;
+
+ of_node_put(rootdn);
+
+ vdevdn = of_find_node_by_path("/vdevice");
+ if (vdevdn) {
+ const uint *mvds;
+
+ mvds = of_get_property(vdevdn, "ibm,max-virtual-dma-size",
+ NULL);
+ if (mvds)
+ max_vdma_size = *mvds;
+ of_node_put(vdevdn);
+ }
+
+ return 0;
+}
+
+static char *ibmvscsis_get_fabric_name(void)
+{
+ return "ibmvscsis";
+}
+
+static char *ibmvscsis_get_fabric_wwn(struct se_portal_group *se_tpg)
+{
+ struct ibmvscsis_tport *tport =
+ container_of(se_tpg, struct ibmvscsis_tport, se_tpg);
+
+ return tport->tport_name;
+}
+
+static u16 ibmvscsis_get_tag(struct se_portal_group *se_tpg)
+{
+ struct ibmvscsis_tport *tport =
+ container_of(se_tpg, struct ibmvscsis_tport, se_tpg);
+
+ return tport->tport_tpgt;
+}
+
+static u32 ibmvscsis_get_default_depth(struct se_portal_group *se_tpg)
+{
+ return 1;
+}
+
+static int ibmvscsis_check_true(struct se_portal_group *se_tpg)
+{
+ return 1;
+}
+
+static int ibmvscsis_check_false(struct se_portal_group *se_tpg)
+{
+ return 0;
+}
+
+static u32 ibmvscsis_tpg_get_inst_index(struct se_portal_group *se_tpg)
+{
+ return 1;
+}
+
+static int ibmvscsis_check_stop_free(struct se_cmd *se_cmd)
+{
+ return target_put_sess_cmd(se_cmd);
+}
+
+static void ibmvscsis_release_cmd(struct se_cmd *se_cmd)
+{
+ struct ibmvscsis_cmd *cmd = container_of(se_cmd, struct ibmvscsis_cmd,
+ se_cmd);
+ struct scsi_info *vscsi = cmd->adapter;
+
+ pr_debug("release_cmd %p, flags %d\n", se_cmd, cmd->flags);
+
+ spin_lock_bh(&vscsi->intr_lock);
+ /* Remove from active_q */
+ list_del(&cmd->list);
+ list_add_tail(&cmd->list, &vscsi->waiting_rsp);
+ ibmvscsis_send_messages(vscsi);
+ spin_unlock_bh(&vscsi->intr_lock);
+}
+
+static u32 ibmvscsis_sess_get_index(struct se_session *se_sess)
+{
+ return 0;
+}
+
+static int ibmvscsis_write_pending(struct se_cmd *se_cmd)
+{
+ struct ibmvscsis_cmd *cmd = container_of(se_cmd, struct ibmvscsis_cmd,
+ se_cmd);
+ struct iu_entry *iue = cmd->iue;
+ int rc;
+
+ pr_debug("write_pending, se_cmd %p, length 0x%x\n",
+ se_cmd, se_cmd->data_length);
+
+ rc = srp_transfer_data(cmd, &vio_iu(iue)->srp.cmd, ibmvscsis_rdma,
+ 1, 1);
+ if (rc) {
+ pr_err("srp_transfer_data() failed: %d\n", rc);
+ return -EAGAIN;
+ }
+ /*
+ * We now tell TCM to add this WRITE CDB directly into the TCM storage
+ * object execution queue.
+ */
+ target_execute_cmd(se_cmd);
+ return 0;
+}
+
+static int ibmvscsis_write_pending_status(struct se_cmd *se_cmd)
+{
+ return 0;
+}
+
+static void ibmvscsis_set_default_node_attrs(struct se_node_acl *nacl)
+{
+}
+
+static int ibmvscsis_get_cmd_state(struct se_cmd *se_cmd)
+{
+ return 0;
+}
+
+static int ibmvscsis_queue_data_in(struct se_cmd *se_cmd)
+{
+ struct ibmvscsis_cmd *cmd = container_of(se_cmd, struct ibmvscsis_cmd,
+ se_cmd);
+ struct iu_entry *iue = cmd->iue;
+ struct scsi_info *vscsi = cmd->adapter;
+ char *sd;
+ uint len = 0;
+ int rc;
+
+ pr_debug("queue_data_in, se_cmd %p, length 0x%x\n",
+ se_cmd, se_cmd->data_length);
+
+ rc = srp_transfer_data(cmd, &vio_iu(iue)->srp.cmd, ibmvscsis_rdma, 1,
+ 1);
+ if (rc) {
+ pr_err("srp_transfer_data failed: %d\n", rc);
+ sd = se_cmd->sense_buffer;
+ se_cmd->scsi_sense_length = 18;
+ memset(se_cmd->sense_buffer, 0, se_cmd->scsi_sense_length);
+ /* Logical Unit Communication Time-out asc/ascq = 0x0801 */
+ scsi_build_sense_buffer(0, se_cmd->sense_buffer, MEDIUM_ERROR,
+ 0x08, 0x01);
+ }
+
+ srp_build_response(vscsi, cmd, &len);
+ cmd->rsp.format = SRP_FORMAT;
+ cmd->rsp.len = len;
+
+ return 0;
+}
+
+static int ibmvscsis_queue_status(struct se_cmd *se_cmd)
+{
+ struct ibmvscsis_cmd *cmd = container_of(se_cmd, struct ibmvscsis_cmd,
+ se_cmd);
+ struct scsi_info *vscsi = cmd->adapter;
+ uint len;
+
+ pr_debug("queue_status %p\n", se_cmd);
+
+ srp_build_response(vscsi, cmd, &len);
+ cmd->rsp.format = SRP_FORMAT;
+ cmd->rsp.len = len;
+
+ return 0;
+}
+
+static void ibmvscsis_queue_tm_rsp(struct se_cmd *se_cmd)
+{
+ struct ibmvscsis_cmd *cmd = container_of(se_cmd, struct ibmvscsis_cmd,
+ se_cmd);
+ struct scsi_info *vscsi = cmd->adapter;
+ uint len;
+
+ pr_debug("queue_tm_rsp %p, status %d\n",
+ se_cmd, (int)se_cmd->se_tmr_req->response);
+
+ srp_build_response(vscsi, cmd, &len);
+ cmd->rsp.format = SRP_FORMAT;
+ cmd->rsp.len = len;
+}
+
+static void ibmvscsis_aborted_task(struct se_cmd *se_cmd)
+{
+ /* TBD: What (if anything) should we do here? */
+ pr_debug("ibmvscsis_aborted_task %p\n", se_cmd);
+}
+
+static struct se_wwn *ibmvscsis_make_tport(struct target_fabric_configfs *tf,
+ struct config_group *group,
+ const char *name)
+{
+ struct ibmvscsis_tport *tport;
+
+ tport = ibmvscsis_lookup_port(name);
+ if (tport) {
+ tport->tport_proto_id = SCSI_PROTOCOL_SRP;
+ pr_debug("make_tport(%s), pointer:%p, tport_id:%x\n",
+ name, tport, tport->tport_proto_id);
+ return &tport->tport_wwn;
+ }
+
+ return ERR_PTR(-EINVAL);
+}
+
+static void ibmvscsis_drop_tport(struct se_wwn *wwn)
+{
+ struct ibmvscsis_tport *tport = container_of(wwn,
+ struct ibmvscsis_tport,
+ tport_wwn);
+
+ pr_debug("drop_tport(%s)\n",
+ config_item_name(&tport->tport_wwn.wwn_group.cg_item));
+}
+
+static struct se_portal_group *ibmvscsis_make_tpg(struct se_wwn *wwn,
+ struct config_group *group,
+ const char *name)
+{
+ struct ibmvscsis_tport *tport =
+ container_of(wwn, struct ibmvscsis_tport, tport_wwn);
+ int rc;
+
+ tport->releasing = false;
+
+ rc = core_tpg_register(&tport->tport_wwn, &tport->se_tpg,
+ tport->tport_proto_id);
+ if (rc)
+ return ERR_PTR(rc);
+
+ return &tport->se_tpg;
+}
+
+static void ibmvscsis_drop_tpg(struct se_portal_group *se_tpg)
+{
+ struct ibmvscsis_tport *tport = container_of(se_tpg,
+ struct ibmvscsis_tport,
+ se_tpg);
+
+ tport->releasing = true;
+ tport->enabled = false;
+
+ /*
+ * Release the virtual I_T Nexus for this ibmvscsis TPG
+ */
+ ibmvscsis_drop_nexus(tport);
+ /*
+ * Deregister the se_tpg from TCM..
+ */
+ core_tpg_deregister(se_tpg);
+}
+
+static ssize_t ibmvscsis_wwn_version_show(struct config_item *item,
+ char *page)
+{
+ return scnprintf(page, PAGE_SIZE, "%s\n", IBMVSCSIS_VERSION);
+}
+CONFIGFS_ATTR_RO(ibmvscsis_wwn_, version);
+
+static struct configfs_attribute *ibmvscsis_wwn_attrs[] = {
+ &ibmvscsis_wwn_attr_version,
+ NULL,
+};
+
+static ssize_t ibmvscsis_tpg_enable_show(struct config_item *item,
+ char *page)
+{
+ struct se_portal_group *se_tpg = to_tpg(item);
+ struct ibmvscsis_tport *tport = container_of(se_tpg,
+ struct ibmvscsis_tport,
+ se_tpg);
+
+ return snprintf(page, PAGE_SIZE, "%d\n", (tport->enabled) ? 1 : 0);
+}
+
+static ssize_t ibmvscsis_tpg_enable_store(struct config_item *item,
+ const char *page, size_t count)
+{
+ struct se_portal_group *se_tpg = to_tpg(item);
+ struct ibmvscsis_tport *tport = container_of(se_tpg,
+ struct ibmvscsis_tport,
+ se_tpg);
+ struct scsi_info *vscsi = container_of(tport, struct scsi_info, tport);
+ unsigned long tmp;
+ int rc;
+ long lrc;
+
+ rc = kstrtoul(page, 0, &tmp);
+ if (rc < 0) {
+ pr_err("Unable to extract srpt_tpg_store_enable\n");
+ return -EINVAL;
+ }
+
+ if ((tmp != 0) && (tmp != 1)) {
+ pr_err("Illegal value for srpt_tpg_store_enable\n");
+ return -EINVAL;
+ }
+
+ if (tmp) {
+ tport->enabled = true;
+ spin_lock_bh(&vscsi->intr_lock);
+ lrc = ibmvscsis_enable_change_state(vscsi);
+ if (lrc)
+ pr_err("enable_change_state failed, rc %ld state %d\n",
+ lrc, vscsi->state);
+ spin_unlock_bh(&vscsi->intr_lock);
+ } else {
+ tport->enabled = false;
+ }
+
+ pr_debug("tpg_enable_store, state %d\n", vscsi->state);
+
+ return count;
+}
+CONFIGFS_ATTR(ibmvscsis_tpg_, enable);
+
+static struct configfs_attribute *ibmvscsis_tpg_attrs[] = {
+ &ibmvscsis_tpg_attr_enable,
+ NULL,
+};
+
+static const struct target_core_fabric_ops ibmvscsis_ops = {
+ .module = THIS_MODULE,
+ .name = "ibmvscsis",
+ .get_fabric_name = ibmvscsis_get_fabric_name,
+ .tpg_get_wwn = ibmvscsis_get_fabric_wwn,
+ .tpg_get_tag = ibmvscsis_get_tag,
+ .tpg_get_default_depth = ibmvscsis_get_default_depth,
+ .tpg_check_demo_mode = ibmvscsis_check_true,
+ .tpg_check_demo_mode_cache = ibmvscsis_check_true,
+ .tpg_check_demo_mode_write_protect = ibmvscsis_check_false,
+ .tpg_check_prod_mode_write_protect = ibmvscsis_check_false,
+ .tpg_get_inst_index = ibmvscsis_tpg_get_inst_index,
+ .check_stop_free = ibmvscsis_check_stop_free,
+ .release_cmd = ibmvscsis_release_cmd,
+ .sess_get_index = ibmvscsis_sess_get_index,
+ .write_pending = ibmvscsis_write_pending,
+ .write_pending_status = ibmvscsis_write_pending_status,
+ .set_default_node_attributes = ibmvscsis_set_default_node_attrs,
+ .get_cmd_state = ibmvscsis_get_cmd_state,
+ .queue_data_in = ibmvscsis_queue_data_in,
+ .queue_status = ibmvscsis_queue_status,
+ .queue_tm_rsp = ibmvscsis_queue_tm_rsp,
+ .aborted_task = ibmvscsis_aborted_task,
+ /*
+ * Setup function pointers for logic in target_core_fabric_configfs.c
+ */
+ .fabric_make_wwn = ibmvscsis_make_tport,
+ .fabric_drop_wwn = ibmvscsis_drop_tport,
+ .fabric_make_tpg = ibmvscsis_make_tpg,
+ .fabric_drop_tpg = ibmvscsis_drop_tpg,
+
+ .tfc_wwn_attrs = ibmvscsis_wwn_attrs,
+ .tfc_tpg_base_attrs = ibmvscsis_tpg_attrs,
+};
+
+static void ibmvscsis_dev_release(struct device *dev) {};
+
+static struct class_attribute ibmvscsis_class_attrs[] = {
+ __ATTR_NULL,
+};
+
+static struct device_attribute dev_attr_system_id =
+ __ATTR(system_id, S_IRUGO, system_id_show, NULL);
+
+static struct device_attribute dev_attr_partition_number =
+ __ATTR(partition_number, S_IRUGO, partition_number_show, NULL);
+
+static struct device_attribute dev_attr_unit_address =
+ __ATTR(unit_address, S_IRUGO, unit_address_show, NULL);
+
+static struct attribute *ibmvscsis_dev_attrs[] = {
+ &dev_attr_system_id.attr,
+ &dev_attr_partition_number.attr,
+ &dev_attr_unit_address.attr,
+};
+ATTRIBUTE_GROUPS(ibmvscsis_dev);
+
+static struct class ibmvscsis_class = {
+ .name = "ibmvscsis",
+ .dev_release = ibmvscsis_dev_release,
+ .class_attrs = ibmvscsis_class_attrs,
+ .dev_groups = ibmvscsis_dev_groups,
+};
+
+static struct vio_device_id ibmvscsis_device_table[] = {
+ { "v-scsi-host", "IBM,v-scsi-host" },
+ { "", "" }
+};
+MODULE_DEVICE_TABLE(vio, ibmvscsis_device_table);
+
+static struct vio_driver ibmvscsis_driver = {
+ .name = "ibmvscsis",
+ .id_table = ibmvscsis_device_table,
+ .probe = ibmvscsis_probe,
+ .remove = ibmvscsis_remove,
+};
+
+/*
+ * ibmvscsis_init() - Kernel Module initialization
+ *
+ * Note: vio_register_driver() registers callback functions, and at least one
+ * of those callback functions calls TCM - Linux IO Target Subsystem, thus
+ * the SCSI Target template must be registered before vio_register_driver()
+ * is called.
+ */
+static int __init ibmvscsis_init(void)
+{
+ int rc = 0;
+
+ rc = ibmvscsis_get_system_info();
+ if (rc) {
+ pr_err("rc %d from get_system_info\n", rc);
+ goto out;
+ }
+
+ rc = class_register(&ibmvscsis_class);
+ if (rc) {
+ pr_err("failed class register\n");
+ goto out;
+ }
+
+ rc = target_register_template(&ibmvscsis_ops);
+ if (rc) {
+ pr_err("rc %d from target_register_template\n", rc);
+ goto unregister_class;
+ }
+
+ rc = vio_register_driver(&ibmvscsis_driver);
+ if (rc) {
+ pr_err("rc %d from vio_register_driver\n", rc);
+ goto unregister_target;
+ }
+
+ return 0;
+
+unregister_target:
+ target_unregister_template(&ibmvscsis_ops);
+unregister_class:
+ class_unregister(&ibmvscsis_class);
+out:
+ return rc;
+}
+
+static void __exit ibmvscsis_exit(void)
+{
+ pr_info("Unregister IBM virtual SCSI host driver\n");
+ vio_unregister_driver(&ibmvscsis_driver);
+ target_unregister_template(&ibmvscsis_ops);
+ class_unregister(&ibmvscsis_class);
+}
+
+MODULE_DESCRIPTION("IBMVSCSIS fabric driver");
+MODULE_AUTHOR("Bryant G. Ly and Michael Cyr");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(IBMVSCSIS_VERSION);
+module_init(ibmvscsis_init);
+module_exit(ibmvscsis_exit);
diff --git a/drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.h b/drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.h
new file mode 100644
index 000000000000..981a0c992b6c
--- /dev/null
+++ b/drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.h
@@ -0,0 +1,346 @@
+/*******************************************************************************
+ * IBM Virtual SCSI Target Driver
+ * Copyright (C) 2003-2005 Dave Boutcher (boutcher@us.ibm.com) IBM Corp.
+ * Santiago Leon (santil@us.ibm.com) IBM Corp.
+ * Linda Xie (lxie@us.ibm.com) IBM Corp.
+ *
+ * Copyright (C) 2005-2011 FUJITA Tomonori <tomof@acm.org>
+ * Copyright (C) 2010 Nicholas A. Bellinger <nab@kernel.org>
+ * Copyright (C) 2016 Bryant G. Ly <bryantly@linux.vnet.ibm.com> IBM Corp.
+ *
+ * Authors: Bryant G. Ly <bryantly@linux.vnet.ibm.com>
+ * Authors: Michael Cyr <mikecyr@linux.vnet.ibm.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ ****************************************************************************/
+
+#ifndef __H_IBMVSCSI_TGT
+#define __H_IBMVSCSI_TGT
+
+#include "libsrp.h"
+
+#define SYS_ID_NAME_LEN 64
+#define PARTITION_NAMELEN 96
+#define IBMVSCSIS_NAMELEN 32
+
+#define MSG_HI 0
+#define MSG_LOW 1
+
+#define MAX_CMD_Q_PAGES 4
+#define CRQ_PER_PAGE (PAGE_SIZE / sizeof(struct viosrp_crq))
+/* in terms of number of elements */
+#define DEFAULT_CMD_Q_SIZE CRQ_PER_PAGE
+#define MAX_CMD_Q_SIZE (DEFAULT_CMD_Q_SIZE * MAX_CMD_Q_PAGES)
+
+#define SRP_VIOLATION 0x102 /* general error code */
+
+/*
+ * SRP buffer formats defined as of 16.a supported by this driver.
+ */
+#define SUPPORTED_FORMATS ((SRP_DATA_DESC_DIRECT << 1) | \
+ (SRP_DATA_DESC_INDIRECT << 1))
+
+#define SCSI_LUN_ADDR_METHOD_FLAT 1
+
+struct dma_window {
+ u32 liobn; /* Unique per vdevice */
+ u64 tce_base; /* Physical location of the TCE table */
+ u64 tce_size; /* Size of the TCE table in bytes */
+};
+
+struct target_dds {
+ u64 unit_id; /* 64 bit will force alignment */
+#define NUM_DMA_WINDOWS 2
+#define LOCAL 0
+#define REMOTE 1
+ struct dma_window window[NUM_DMA_WINDOWS];
+
+ /* root node property "ibm,partition-no" */
+ uint partition_num;
+ char partition_name[PARTITION_NAMELEN];
+};
+
+#define MAX_NUM_PORTS 1
+#define MAX_H_COPY_RDMA (128 * 1024)
+
+#define MAX_EYE 64
+
+/* Return codes */
+#define ADAPT_SUCCESS 0L
+/* choose error codes that do not conflict with PHYP */
+#define ERROR -40L
+
+struct format_code {
+ u8 reserved;
+ u8 buffers;
+};
+
+struct client_info {
+#define SRP_VERSION "16.a"
+ char srp_version[8];
+ /* root node property ibm,partition-name */
+ char partition_name[PARTITION_NAMELEN];
+ /* root node property ibm,partition-no */
+ u32 partition_number;
+ /* initially 1 */
+ u32 mad_version;
+ u32 os_type;
+};
+
+/*
+ * Changing this constant changes the number of seconds to wait before
+ * considering the client will never service its queue again.
+ */
+#define SECONDS_TO_CONSIDER_FAILED 30
+/*
+ * These constants set the polling period used to determine if the client
+ * has freed at least one element in the response queue.
+ */
+#define WAIT_SECONDS 1
+#define WAIT_NANO_SECONDS 5000
+#define MAX_TIMER_POPS ((1000000 / WAIT_NANO_SECONDS) * \
+ SECONDS_TO_CONSIDER_FAILED)
+/*
+ * general purpose timer control block
+ * which can be used for multiple functions
+ */
+struct timer_cb {
+ struct hrtimer timer;
+ /*
+ * how long has it been since the client
+ * serviced the queue. The variable is incrmented
+ * in the service_wait_q routine and cleared
+ * in send messages
+ */
+ int timer_pops;
+ /* the timer is started */
+ bool started;
+};
+
+struct cmd_queue {
+ /* kva */
+ struct viosrp_crq *base_addr;
+ dma_addr_t crq_token;
+ /* used to maintain index */
+ uint mask;
+ /* current element */
+ uint index;
+ int size;
+};
+
+#define SCSOLNT_RESP_SHIFT 1
+#define UCSOLNT_RESP_SHIFT 2
+
+#define SCSOLNT BIT(SCSOLNT_RESP_SHIFT)
+#define UCSOLNT BIT(UCSOLNT_RESP_SHIFT)
+
+enum cmd_type {
+ SCSI_CDB = 0x01,
+ TASK_MANAGEMENT = 0x02,
+ /* MAD or addressed to port 0 */
+ ADAPTER_MAD = 0x04,
+ UNSET_TYPE = 0x08,
+};
+
+struct iu_rsp {
+ u8 format;
+ u8 sol_not;
+ u16 len;
+ /* tag is just to help client identify cmd, so don't translate be/le */
+ u64 tag;
+};
+
+struct ibmvscsis_cmd {
+ struct list_head list;
+ /* Used for TCM Core operations */
+ struct se_cmd se_cmd;
+ struct iu_entry *iue;
+ struct iu_rsp rsp;
+ struct work_struct work;
+ struct scsi_info *adapter;
+ /* Sense buffer that will be mapped into outgoing status */
+ unsigned char sense_buf[TRANSPORT_SENSE_BUFFER];
+ u64 init_time;
+#define CMD_FAST_FAIL BIT(0)
+ u32 flags;
+ char type;
+};
+
+struct ibmvscsis_nexus {
+ struct se_session *se_sess;
+};
+
+struct ibmvscsis_tport {
+ /* SCSI protocol the tport is providing */
+ u8 tport_proto_id;
+ /* ASCII formatted WWPN for SRP Target port */
+ char tport_name[IBMVSCSIS_NAMELEN];
+ /* Returned by ibmvscsis_make_tport() */
+ struct se_wwn tport_wwn;
+ /* Returned by ibmvscsis_make_tpg() */
+ struct se_portal_group se_tpg;
+ /* ibmvscsis port target portal group tag for TCM */
+ u16 tport_tpgt;
+ /* Pointer to TCM session for I_T Nexus */
+ struct ibmvscsis_nexus *ibmv_nexus;
+ bool enabled;
+ bool releasing;
+};
+
+struct scsi_info {
+ struct list_head list;
+ char eye[MAX_EYE];
+
+ /* commands waiting for space on repsonse queue */
+ struct list_head waiting_rsp;
+#define NO_QUEUE 0x00
+#define WAIT_ENABLED 0X01
+ /* driver has received an initialize command */
+#define PART_UP_WAIT_ENAB 0x02
+#define WAIT_CONNECTION 0x04
+ /* have established a connection */
+#define CONNECTED 0x08
+ /* at least one port is processing SRP IU */
+#define SRP_PROCESSING 0x10
+ /* remove request received */
+#define UNCONFIGURING 0x20
+ /* disconnect by letting adapter go idle, no error */
+#define WAIT_IDLE 0x40
+ /* disconnecting to clear an error */
+#define ERR_DISCONNECT 0x80
+ /* disconnect to clear error state, then come back up */
+#define ERR_DISCONNECT_RECONNECT 0x100
+ /* disconnected after clearing an error */
+#define ERR_DISCONNECTED 0x200
+ /* A series of errors caused unexpected errors */
+#define UNDEFINED 0x400
+ u16 state;
+ int fast_fail;
+ struct target_dds dds;
+ char *cmd_pool;
+ /* list of free commands */
+ struct list_head free_cmd;
+ /* command elements ready for scheduler */
+ struct list_head schedule_q;
+ /* commands sent to TCM */
+ struct list_head active_q;
+ caddr_t *map_buf;
+ /* ioba of map buffer */
+ dma_addr_t map_ioba;
+ /* allowable number of outstanding SRP requests */
+ int request_limit;
+ /* extra credit */
+ int credit;
+ /* outstanding transactions against credit limit */
+ int debit;
+
+ /* allow only one outstanding mad request */
+#define PROCESSING_MAD 0x00002
+ /* Waiting to go idle */
+#define WAIT_FOR_IDLE 0x00004
+ /* H_REG_CRQ called */
+#define CRQ_CLOSED 0x00010
+ /* detected that client has failed */
+#define CLIENT_FAILED 0x00040
+ /* detected that transport event occurred */
+#define TRANS_EVENT 0x00080
+ /* don't attempt to send anything to the client */
+#define RESPONSE_Q_DOWN 0x00100
+ /* request made to schedule disconnect handler */
+#define SCHEDULE_DISCONNECT 0x00400
+ /* disconnect handler is scheduled */
+#define DISCONNECT_SCHEDULED 0x00800
+ u32 flags;
+ /* adapter lock */
+ spinlock_t intr_lock;
+ /* information needed to manage command queue */
+ struct cmd_queue cmd_q;
+ /* used in hcall to copy response back into srp buffer */
+ u64 empty_iu_id;
+ /* used in crq, to tag what iu the response is for */
+ u64 empty_iu_tag;
+ uint new_state;
+ /* control block for the response queue timer */
+ struct timer_cb rsp_q_timer;
+ /* keep last client to enable proper accounting */
+ struct client_info client_data;
+ /* what can this client do */
+ u32 client_cap;
+ /*
+ * The following two fields capture state and flag changes that
+ * can occur when the lock is given up. In the orginal design,
+ * the lock was held during calls into phyp;
+ * however, phyp did not meet PAPR architecture. This is
+ * a work around.
+ */
+ u16 phyp_acr_state;
+ u32 phyp_acr_flags;
+
+ struct workqueue_struct *work_q;
+ struct completion wait_idle;
+ struct device dev;
+ struct vio_dev *dma_dev;
+ struct srp_target target;
+ struct ibmvscsis_tport tport;
+ struct tasklet_struct work_task;
+ struct work_struct proc_work;
+};
+
+/*
+ * Provide a constant that allows software to detect the adapter is
+ * disconnecting from the client from one of several states.
+ */
+#define IS_DISCONNECTING (UNCONFIGURING | ERR_DISCONNECT_RECONNECT | \
+ ERR_DISCONNECT)
+
+/*
+ * Provide a constant that can be used with interrupt handling that
+ * essentially lets the interrupt handler know that all requests should
+ * be thrown out,
+ */
+#define DONT_PROCESS_STATE (IS_DISCONNECTING | UNDEFINED | \
+ ERR_DISCONNECTED | WAIT_IDLE)
+
+/*
+ * If any of these flag bits are set then do not allow the interrupt
+ * handler to schedule the off level handler.
+ */
+#define BLOCK (DISCONNECT_SCHEDULED)
+
+/* State and transition events that stop the interrupt handler */
+#define TARGET_STOP(VSCSI) (long)(((VSCSI)->state & DONT_PROCESS_STATE) | \
+ ((VSCSI)->flags & BLOCK))
+
+/* flag bit that are not reset during disconnect */
+#define PRESERVE_FLAG_FIELDS 0
+
+#define vio_iu(IUE) ((union viosrp_iu *)((IUE)->sbuf->buf))
+
+#define READ_CMD(cdb) (((cdb)[0] & 0x1F) == 8)
+#define WRITE_CMD(cdb) (((cdb)[0] & 0x1F) == 0xA)
+
+#ifndef H_GET_PARTNER_INFO
+#define H_GET_PARTNER_INFO 0x0000000000000008LL
+#endif
+
+#define h_copy_rdma(l, sa, sb, da, db) \
+ plpar_hcall_norets(H_COPY_RDMA, l, sa, sb, da, db)
+#define h_vioctl(u, o, a, u1, u2, u3, u4) \
+ plpar_hcall_norets(H_VIOCTL, u, o, a, u1, u2)
+#define h_reg_crq(ua, tok, sz) \
+ plpar_hcall_norets(H_REG_CRQ, ua, tok, sz)
+#define h_free_crq(ua) \
+ plpar_hcall_norets(H_FREE_CRQ, ua)
+#define h_send_crq(ua, d1, d2) \
+ plpar_hcall_norets(H_SEND_CRQ, ua, d1, d2)
+
+#endif
diff --git a/drivers/scsi/ibmvscsi_tgt/libsrp.c b/drivers/scsi/ibmvscsi_tgt/libsrp.c
new file mode 100644
index 000000000000..5a4cc28ca5ff
--- /dev/null
+++ b/drivers/scsi/ibmvscsi_tgt/libsrp.c
@@ -0,0 +1,427 @@
+/*******************************************************************************
+ * SCSI RDMA Protocol lib functions
+ *
+ * Copyright (C) 2006 FUJITA Tomonori <tomof@acm.org>
+ * Copyright (C) 2016 Bryant G. Ly <bryantly@linux.vnet.ibm.com> IBM Corp.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ ***********************************************************************/
+
+#define pr_fmt(fmt) "libsrp: " fmt
+
+#include <linux/printk.h>
+#include <linux/err.h>
+#include <linux/slab.h>
+#include <linux/kfifo.h>
+#include <linux/scatterlist.h>
+#include <linux/dma-mapping.h>
+#include <linux/module.h>
+#include <scsi/srp.h>
+#include <target/target_core_base.h>
+#include "libsrp.h"
+#include "ibmvscsi_tgt.h"
+
+static int srp_iu_pool_alloc(struct srp_queue *q, size_t max,
+ struct srp_buf **ring)
+{
+ struct iu_entry *iue;
+ int i;
+
+ q->pool = kcalloc(max, sizeof(struct iu_entry *), GFP_KERNEL);
+ if (!q->pool)
+ return -ENOMEM;
+ q->items = kcalloc(max, sizeof(struct iu_entry), GFP_KERNEL);
+ if (!q->items)
+ goto free_pool;
+
+ spin_lock_init(&q->lock);
+ kfifo_init(&q->queue, (void *)q->pool, max * sizeof(void *));
+
+ for (i = 0, iue = q->items; i < max; i++) {
+ kfifo_in(&q->queue, (void *)&iue, sizeof(void *));
+ iue->sbuf = ring[i];
+ iue++;
+ }
+ return 0;
+
+free_pool:
+ kfree(q->pool);
+ return -ENOMEM;
+}
+
+static void srp_iu_pool_free(struct srp_queue *q)
+{
+ kfree(q->items);
+ kfree(q->pool);
+}
+
+static struct srp_buf **srp_ring_alloc(struct device *dev,
+ size_t max, size_t size)
+{
+ struct srp_buf **ring;
+ int i;
+
+ ring = kcalloc(max, sizeof(struct srp_buf *), GFP_KERNEL);
+ if (!ring)
+ return NULL;
+
+ for (i = 0; i < max; i++) {
+ ring[i] = kzalloc(sizeof(*ring[i]), GFP_KERNEL);
+ if (!ring[i])
+ goto out;
+ ring[i]->buf = dma_alloc_coherent(dev, size, &ring[i]->dma,
+ GFP_KERNEL);
+ if (!ring[i]->buf)
+ goto out;
+ }
+ return ring;
+
+out:
+ for (i = 0; i < max && ring[i]; i++) {
+ if (ring[i]->buf) {
+ dma_free_coherent(dev, size, ring[i]->buf,
+ ring[i]->dma);
+ }
+ kfree(ring[i]);
+ }
+ kfree(ring);
+
+ return NULL;
+}
+
+static void srp_ring_free(struct device *dev, struct srp_buf **ring,
+ size_t max, size_t size)
+{
+ int i;
+
+ for (i = 0; i < max; i++) {
+ dma_free_coherent(dev, size, ring[i]->buf, ring[i]->dma);
+ kfree(ring[i]);
+ }
+ kfree(ring);
+}
+
+int srp_target_alloc(struct srp_target *target, struct device *dev,
+ size_t nr, size_t iu_size)
+{
+ int err;
+
+ spin_lock_init(&target->lock);
+
+ target->dev = dev;
+
+ target->srp_iu_size = iu_size;
+ target->rx_ring_size = nr;
+ target->rx_ring = srp_ring_alloc(target->dev, nr, iu_size);
+ if (!target->rx_ring)
+ return -ENOMEM;
+ err = srp_iu_pool_alloc(&target->iu_queue, nr, target->rx_ring);
+ if (err)
+ goto free_ring;
+
+ dev_set_drvdata(target->dev, target);
+ return 0;
+
+free_ring:
+ srp_ring_free(target->dev, target->rx_ring, nr, iu_size);
+ return -ENOMEM;
+}
+
+void srp_target_free(struct srp_target *target)
+{
+ dev_set_drvdata(target->dev, NULL);
+ srp_ring_free(target->dev, target->rx_ring, target->rx_ring_size,
+ target->srp_iu_size);
+ srp_iu_pool_free(&target->iu_queue);
+}
+
+struct iu_entry *srp_iu_get(struct srp_target *target)
+{
+ struct iu_entry *iue = NULL;
+
+ if (kfifo_out_locked(&target->iu_queue.queue, (void *)&iue,
+ sizeof(void *),
+ &target->iu_queue.lock) != sizeof(void *)) {
+ WARN_ONCE(1, "unexpected fifo state");
+ return NULL;
+ }
+ if (!iue)
+ return iue;
+ iue->target = target;
+ iue->flags = 0;
+ return iue;
+}
+
+void srp_iu_put(struct iu_entry *iue)
+{
+ kfifo_in_locked(&iue->target->iu_queue.queue, (void *)&iue,
+ sizeof(void *), &iue->target->iu_queue.lock);
+}
+
+static int srp_direct_data(struct ibmvscsis_cmd *cmd, struct srp_direct_buf *md,
+ enum dma_data_direction dir, srp_rdma_t rdma_io,
+ int dma_map, int ext_desc)
+{
+ struct iu_entry *iue = NULL;
+ struct scatterlist *sg = NULL;
+ int err, nsg = 0, len;
+
+ if (dma_map) {
+ iue = cmd->iue;
+ sg = cmd->se_cmd.t_data_sg;
+ nsg = dma_map_sg(iue->target->dev, sg, cmd->se_cmd.t_data_nents,
+ DMA_BIDIRECTIONAL);
+ if (!nsg) {
+ pr_err("fail to map %p %d\n", iue,
+ cmd->se_cmd.t_data_nents);
+ return 0;
+ }
+ len = min(cmd->se_cmd.data_length, be32_to_cpu(md->len));
+ } else {
+ len = be32_to_cpu(md->len);
+ }
+
+ err = rdma_io(cmd, sg, nsg, md, 1, dir, len);
+
+ if (dma_map)
+ dma_unmap_sg(iue->target->dev, sg, nsg, DMA_BIDIRECTIONAL);
+
+ return err;
+}
+
+static int srp_indirect_data(struct ibmvscsis_cmd *cmd, struct srp_cmd *srp_cmd,
+ struct srp_indirect_buf *id,
+ enum dma_data_direction dir, srp_rdma_t rdma_io,
+ int dma_map, int ext_desc)
+{
+ struct iu_entry *iue = NULL;
+ struct srp_direct_buf *md = NULL;
+ struct scatterlist dummy, *sg = NULL;
+ dma_addr_t token = 0;
+ int err = 0;
+ int nmd, nsg = 0, len;
+
+ if (dma_map || ext_desc) {
+ iue = cmd->iue;
+ sg = cmd->se_cmd.t_data_sg;
+ }
+
+ nmd = be32_to_cpu(id->table_desc.len) / sizeof(struct srp_direct_buf);
+
+ if ((dir == DMA_FROM_DEVICE && nmd == srp_cmd->data_in_desc_cnt) ||
+ (dir == DMA_TO_DEVICE && nmd == srp_cmd->data_out_desc_cnt)) {
+ md = &id->desc_list[0];
+ goto rdma;
+ }
+
+ if (ext_desc && dma_map) {
+ md = dma_alloc_coherent(iue->target->dev,
+ be32_to_cpu(id->table_desc.len),
+ &token, GFP_KERNEL);
+ if (!md) {
+ pr_err("Can't get dma memory %u\n",
+ be32_to_cpu(id->table_desc.len));
+ return -ENOMEM;
+ }
+
+ sg_init_one(&dummy, md, be32_to_cpu(id->table_desc.len));
+ sg_dma_address(&dummy) = token;
+ sg_dma_len(&dummy) = be32_to_cpu(id->table_desc.len);
+ err = rdma_io(cmd, &dummy, 1, &id->table_desc, 1, DMA_TO_DEVICE,
+ be32_to_cpu(id->table_desc.len));
+ if (err) {
+ pr_err("Error copying indirect table %d\n", err);
+ goto free_mem;
+ }
+ } else {
+ pr_err("This command uses external indirect buffer\n");
+ return -EINVAL;
+ }
+
+rdma:
+ if (dma_map) {
+ nsg = dma_map_sg(iue->target->dev, sg, cmd->se_cmd.t_data_nents,
+ DMA_BIDIRECTIONAL);
+ if (!nsg) {
+ pr_err("fail to map %p %d\n", iue,
+ cmd->se_cmd.t_data_nents);
+ err = -EIO;
+ goto free_mem;
+ }
+ len = min(cmd->se_cmd.data_length, be32_to_cpu(id->len));
+ } else {
+ len = be32_to_cpu(id->len);
+ }
+
+ err = rdma_io(cmd, sg, nsg, md, nmd, dir, len);
+
+ if (dma_map)
+ dma_unmap_sg(iue->target->dev, sg, nsg, DMA_BIDIRECTIONAL);
+
+free_mem:
+ if (token && dma_map) {
+ dma_free_coherent(iue->target->dev,
+ be32_to_cpu(id->table_desc.len), md, token);
+ }
+ return err;
+}
+
+static int data_out_desc_size(struct srp_cmd *cmd)
+{
+ int size = 0;
+ u8 fmt = cmd->buf_fmt >> 4;
+
+ switch (fmt) {
+ case SRP_NO_DATA_DESC:
+ break;
+ case SRP_DATA_DESC_DIRECT:
+ size = sizeof(struct srp_direct_buf);
+ break;
+ case SRP_DATA_DESC_INDIRECT:
+ size = sizeof(struct srp_indirect_buf) +
+ sizeof(struct srp_direct_buf) * cmd->data_out_desc_cnt;
+ break;
+ default:
+ pr_err("client error. Invalid data_out_format %x\n", fmt);
+ break;
+ }
+ return size;
+}
+
+/*
+ * TODO: this can be called multiple times for a single command if it
+ * has very long data.
+ */
+int srp_transfer_data(struct ibmvscsis_cmd *cmd, struct srp_cmd *srp_cmd,
+ srp_rdma_t rdma_io, int dma_map, int ext_desc)
+{
+ struct srp_direct_buf *md;
+ struct srp_indirect_buf *id;
+ enum dma_data_direction dir;
+ int offset, err = 0;
+ u8 format;
+
+ if (!cmd->se_cmd.t_data_nents)
+ return 0;
+
+ offset = srp_cmd->add_cdb_len & ~3;
+
+ dir = srp_cmd_direction(srp_cmd);
+ if (dir == DMA_FROM_DEVICE)
+ offset += data_out_desc_size(srp_cmd);
+
+ if (dir == DMA_TO_DEVICE)
+ format = srp_cmd->buf_fmt >> 4;
+ else
+ format = srp_cmd->buf_fmt & ((1U << 4) - 1);
+
+ switch (format) {
+ case SRP_NO_DATA_DESC:
+ break;
+ case SRP_DATA_DESC_DIRECT:
+ md = (struct srp_direct_buf *)(srp_cmd->add_data + offset);
+ err = srp_direct_data(cmd, md, dir, rdma_io, dma_map, ext_desc);
+ break;
+ case SRP_DATA_DESC_INDIRECT:
+ id = (struct srp_indirect_buf *)(srp_cmd->add_data + offset);
+ err = srp_indirect_data(cmd, srp_cmd, id, dir, rdma_io, dma_map,
+ ext_desc);
+ break;
+ default:
+ pr_err("Unknown format %d %x\n", dir, format);
+ err = -EINVAL;
+ }
+
+ return err;
+}
+
+u64 srp_data_length(struct srp_cmd *cmd, enum dma_data_direction dir)
+{
+ struct srp_direct_buf *md;
+ struct srp_indirect_buf *id;
+ u64 len = 0;
+ uint offset = cmd->add_cdb_len & ~3;
+ u8 fmt;
+
+ if (dir == DMA_TO_DEVICE) {
+ fmt = cmd->buf_fmt >> 4;
+ } else {
+ fmt = cmd->buf_fmt & ((1U << 4) - 1);
+ offset += data_out_desc_size(cmd);
+ }
+
+ switch (fmt) {
+ case SRP_NO_DATA_DESC:
+ break;
+ case SRP_DATA_DESC_DIRECT:
+ md = (struct srp_direct_buf *)(cmd->add_data + offset);
+ len = be32_to_cpu(md->len);
+ break;
+ case SRP_DATA_DESC_INDIRECT:
+ id = (struct srp_indirect_buf *)(cmd->add_data + offset);
+ len = be32_to_cpu(id->len);
+ break;
+ default:
+ pr_err("invalid data format %x\n", fmt);
+ break;
+ }
+ return len;
+}
+
+int srp_get_desc_table(struct srp_cmd *srp_cmd, enum dma_data_direction *dir,
+ u64 *data_len)
+{
+ struct srp_indirect_buf *idb;
+ struct srp_direct_buf *db;
+ uint add_cdb_offset;
+ int rc;
+
+ /*
+ * The pointer computations below will only be compiled correctly
+ * if srp_cmd::add_data is declared as s8*, u8*, s8[] or u8[], so check
+ * whether srp_cmd::add_data has been declared as a byte pointer.
+ */
+ BUILD_BUG_ON(!__same_type(srp_cmd->add_data[0], (s8)0)
+ && !__same_type(srp_cmd->add_data[0], (u8)0));
+
+ BUG_ON(!dir);
+ BUG_ON(!data_len);
+
+ rc = 0;
+ *data_len = 0;
+
+ *dir = DMA_NONE;
+
+ if (srp_cmd->buf_fmt & 0xf)
+ *dir = DMA_FROM_DEVICE;
+ else if (srp_cmd->buf_fmt >> 4)
+ *dir = DMA_TO_DEVICE;
+
+ add_cdb_offset = srp_cmd->add_cdb_len & ~3;
+ if (((srp_cmd->buf_fmt & 0xf) == SRP_DATA_DESC_DIRECT) ||
+ ((srp_cmd->buf_fmt >> 4) == SRP_DATA_DESC_DIRECT)) {
+ db = (struct srp_direct_buf *)(srp_cmd->add_data
+ + add_cdb_offset);
+ *data_len = be32_to_cpu(db->len);
+ } else if (((srp_cmd->buf_fmt & 0xf) == SRP_DATA_DESC_INDIRECT) ||
+ ((srp_cmd->buf_fmt >> 4) == SRP_DATA_DESC_INDIRECT)) {
+ idb = (struct srp_indirect_buf *)(srp_cmd->add_data
+ + add_cdb_offset);
+
+ *data_len = be32_to_cpu(idb->len);
+ }
+ return rc;
+}
+
+MODULE_DESCRIPTION("SCSI RDMA Protocol lib functions");
+MODULE_AUTHOR("FUJITA Tomonori");
+MODULE_LICENSE("GPL");
diff --git a/drivers/scsi/ibmvscsi_tgt/libsrp.h b/drivers/scsi/ibmvscsi_tgt/libsrp.h
new file mode 100644
index 000000000000..4696f331453e
--- /dev/null
+++ b/drivers/scsi/ibmvscsi_tgt/libsrp.h
@@ -0,0 +1,123 @@
+#ifndef __LIBSRP_H__
+#define __LIBSRP_H__
+
+#include <linux/list.h>
+#include <linux/kfifo.h>
+#include <scsi/srp.h>
+
+enum srp_valid {
+ INVALIDATE_CMD_RESP_EL = 0,
+ VALID_CMD_RESP_EL = 0x80,
+ VALID_INIT_MSG = 0xC0,
+ VALID_TRANS_EVENT = 0xFF
+};
+
+enum srp_format {
+ SRP_FORMAT = 1,
+ MAD_FORMAT = 2,
+ OS400_FORMAT = 3,
+ AIX_FORMAT = 4,
+ LINUX_FORMAT = 5,
+ MESSAGE_IN_CRQ = 6
+};
+
+enum srp_init_msg {
+ INIT_MSG = 1,
+ INIT_COMPLETE_MSG = 2
+};
+
+enum srp_trans_event {
+ UNUSED_FORMAT = 0,
+ PARTNER_FAILED = 1,
+ PARTNER_DEREGISTER = 2,
+ MIGRATED = 6
+};
+
+enum srp_status {
+ HEADER_DESCRIPTOR = 0xF1,
+ PING = 0xF5,
+ PING_RESPONSE = 0xF6
+};
+
+enum srp_mad_version {
+ MAD_VERSION_1 = 1
+};
+
+enum srp_os_type {
+ OS400 = 1,
+ LINUX = 2,
+ AIX = 3,
+ OFW = 4
+};
+
+enum srp_task_attributes {
+ SRP_SIMPLE_TASK = 0,
+ SRP_HEAD_TASK = 1,
+ SRP_ORDERED_TASK = 2,
+ SRP_ACA_TASK = 4
+};
+
+enum {
+ SRP_TASK_MANAGEMENT_FUNCTION_COMPLETE = 0,
+ SRP_REQUEST_FIELDS_INVALID = 2,
+ SRP_TASK_MANAGEMENT_FUNCTION_NOT_SUPPORTED = 4,
+ SRP_TASK_MANAGEMENT_FUNCTION_FAILED = 5
+};
+
+struct srp_buf {
+ dma_addr_t dma;
+ void *buf;
+};
+
+struct srp_queue {
+ void *pool;
+ void *items;
+ struct kfifo queue;
+ spinlock_t lock;
+};
+
+struct srp_target {
+ struct device *dev;
+
+ spinlock_t lock;
+ struct list_head cmd_queue;
+
+ size_t srp_iu_size;
+ struct srp_queue iu_queue;
+ size_t rx_ring_size;
+ struct srp_buf **rx_ring;
+
+ void *ldata;
+};
+
+struct iu_entry {
+ struct srp_target *target;
+
+ struct list_head ilist;
+ dma_addr_t remote_token;
+ unsigned long flags;
+
+ struct srp_buf *sbuf;
+ u16 iu_len;
+};
+
+struct ibmvscsis_cmd;
+
+typedef int (srp_rdma_t)(struct ibmvscsis_cmd *, struct scatterlist *, int,
+ struct srp_direct_buf *, int,
+ enum dma_data_direction, unsigned int);
+int srp_target_alloc(struct srp_target *, struct device *, size_t, size_t);
+void srp_target_free(struct srp_target *);
+struct iu_entry *srp_iu_get(struct srp_target *);
+void srp_iu_put(struct iu_entry *);
+int srp_transfer_data(struct ibmvscsis_cmd *, struct srp_cmd *,
+ srp_rdma_t, int, int);
+u64 srp_data_length(struct srp_cmd *cmd, enum dma_data_direction dir);
+int srp_get_desc_table(struct srp_cmd *srp_cmd, enum dma_data_direction *dir,
+ u64 *data_len);
+static inline int srp_cmd_direction(struct srp_cmd *cmd)
+{
+ return (cmd->buf_fmt >> 4) ? DMA_TO_DEVICE : DMA_FROM_DEVICE;
+}
+
+#endif
diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c
index 1f539c288ae8..17d04c702e1b 100644
--- a/drivers/scsi/ipr.c
+++ b/drivers/scsi/ipr.c
@@ -3288,6 +3288,11 @@ static void ipr_worker_thread(struct work_struct *work)
return;
}
+ if (!ioa_cfg->scan_enabled) {
+ spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
+ return;
+ }
+
restart:
do {
did_work = 0;
@@ -10214,6 +10219,7 @@ static int ipr_probe_ioa(struct pci_dev *pdev,
if (!ioa_cfg->reset_work_q) {
dev_err(&pdev->dev, "Couldn't register reset workqueue\n");
+ rc = -ENOMEM;
goto out_free_irq;
}
} else
@@ -10362,6 +10368,7 @@ static void ipr_remove(struct pci_dev *pdev)
static int ipr_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id)
{
struct ipr_ioa_cfg *ioa_cfg;
+ unsigned long flags;
int rc, i;
rc = ipr_probe_ioa(pdev, dev_id);
@@ -10403,8 +10410,11 @@ static int ipr_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id)
__ipr_remove(pdev);
return rc;
}
+ spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
+ ioa_cfg->scan_enabled = 1;
+ schedule_work(&ioa_cfg->work_q);
+ spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
- scsi_scan_host(ioa_cfg->host);
ioa_cfg->iopoll_weight = ioa_cfg->chip_cfg->iopoll_weight;
if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
@@ -10414,7 +10424,8 @@ static int ipr_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id)
}
}
- schedule_work(&ioa_cfg->work_q);
+ scsi_scan_host(ioa_cfg->host);
+
return 0;
}
diff --git a/drivers/scsi/ipr.h b/drivers/scsi/ipr.h
index 1d42c7464dfc..cdb51960b53c 100644
--- a/drivers/scsi/ipr.h
+++ b/drivers/scsi/ipr.h
@@ -1478,6 +1478,7 @@ struct ipr_ioa_cfg {
u8 in_ioa_bringdown:1;
u8 ioa_unit_checked:1;
u8 dump_taken:1;
+ u8 scan_enabled:1;
u8 scan_done:1;
u8 needs_hard_reset:1;
u8 dual_raid:1;
diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c
index a5655d571906..d197aa176dee 100644
--- a/drivers/scsi/lpfc/lpfc_scsi.c
+++ b/drivers/scsi/lpfc/lpfc_scsi.c
@@ -3877,7 +3877,7 @@ int lpfc_sli4_scmd_to_wqidx_distr(struct lpfc_hba *phba,
uint32_t tag;
uint16_t hwq;
- if (shost_use_blk_mq(cmnd->device->host)) {
+ if (cmnd && shost_use_blk_mq(cmnd->device->host)) {
tag = blk_mq_unique_tag(cmnd->request);
hwq = blk_mq_unique_tag_to_hwq(tag);
diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
index 351d08ace24a..7080ce2920fd 100644
--- a/drivers/scsi/lpfc/lpfc_sli.c
+++ b/drivers/scsi/lpfc/lpfc_sli.c
@@ -1323,21 +1323,18 @@ lpfc_sli_ringtxcmpl_put(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
{
lockdep_assert_held(&phba->hbalock);
+ BUG_ON(!piocb || !piocb->vport);
+
list_add_tail(&piocb->list, &pring->txcmplq);
piocb->iocb_flag |= LPFC_IO_ON_TXCMPLQ;
if ((unlikely(pring->ringno == LPFC_ELS_RING)) &&
(piocb->iocb.ulpCommand != CMD_ABORT_XRI_CN) &&
(piocb->iocb.ulpCommand != CMD_CLOSE_XRI_CN) &&
- (!(piocb->vport->load_flag & FC_UNLOADING))) {
- if (!piocb->vport)
- BUG();
- else
- mod_timer(&piocb->vport->els_tmofunc,
- jiffies +
- msecs_to_jiffies(1000 * (phba->fc_ratov << 1)));
- }
-
+ (!(piocb->vport->load_flag & FC_UNLOADING)))
+ mod_timer(&piocb->vport->els_tmofunc,
+ jiffies +
+ msecs_to_jiffies(1000 * (phba->fc_ratov << 1)));
return 0;
}
diff --git a/drivers/ssb/driver_gpio.c b/drivers/ssb/driver_gpio.c
index 180e027b1c8a..796e22037bc4 100644
--- a/drivers/ssb/driver_gpio.c
+++ b/drivers/ssb/driver_gpio.c
@@ -23,7 +23,7 @@
**************************************************/
#if IS_ENABLED(CONFIG_SSB_EMBEDDED)
-static int ssb_gpio_to_irq(struct gpio_chip *chip, unsigned gpio)
+static int ssb_gpio_to_irq(struct gpio_chip *chip, unsigned int gpio)
{
struct ssb_bus *bus = gpiochip_get_data(chip);
@@ -38,14 +38,14 @@ static int ssb_gpio_to_irq(struct gpio_chip *chip, unsigned gpio)
* ChipCommon
**************************************************/
-static int ssb_gpio_chipco_get_value(struct gpio_chip *chip, unsigned gpio)
+static int ssb_gpio_chipco_get_value(struct gpio_chip *chip, unsigned int gpio)
{
struct ssb_bus *bus = gpiochip_get_data(chip);
return !!ssb_chipco_gpio_in(&bus->chipco, 1 << gpio);
}
-static void ssb_gpio_chipco_set_value(struct gpio_chip *chip, unsigned gpio,
+static void ssb_gpio_chipco_set_value(struct gpio_chip *chip, unsigned int gpio,
int value)
{
struct ssb_bus *bus = gpiochip_get_data(chip);
@@ -54,7 +54,7 @@ static void ssb_gpio_chipco_set_value(struct gpio_chip *chip, unsigned gpio,
}
static int ssb_gpio_chipco_direction_input(struct gpio_chip *chip,
- unsigned gpio)
+ unsigned int gpio)
{
struct ssb_bus *bus = gpiochip_get_data(chip);
@@ -63,7 +63,7 @@ static int ssb_gpio_chipco_direction_input(struct gpio_chip *chip,
}
static int ssb_gpio_chipco_direction_output(struct gpio_chip *chip,
- unsigned gpio, int value)
+ unsigned int gpio, int value)
{
struct ssb_bus *bus = gpiochip_get_data(chip);
@@ -72,7 +72,7 @@ static int ssb_gpio_chipco_direction_output(struct gpio_chip *chip,
return 0;
}
-static int ssb_gpio_chipco_request(struct gpio_chip *chip, unsigned gpio)
+static int ssb_gpio_chipco_request(struct gpio_chip *chip, unsigned int gpio)
{
struct ssb_bus *bus = gpiochip_get_data(chip);
@@ -85,7 +85,7 @@ static int ssb_gpio_chipco_request(struct gpio_chip *chip, unsigned gpio)
return 0;
}
-static void ssb_gpio_chipco_free(struct gpio_chip *chip, unsigned gpio)
+static void ssb_gpio_chipco_free(struct gpio_chip *chip, unsigned int gpio)
{
struct ssb_bus *bus = gpiochip_get_data(chip);
@@ -256,14 +256,14 @@ static int ssb_gpio_chipco_init(struct ssb_bus *bus)
#ifdef CONFIG_SSB_DRIVER_EXTIF
-static int ssb_gpio_extif_get_value(struct gpio_chip *chip, unsigned gpio)
+static int ssb_gpio_extif_get_value(struct gpio_chip *chip, unsigned int gpio)
{
struct ssb_bus *bus = gpiochip_get_data(chip);
return !!ssb_extif_gpio_in(&bus->extif, 1 << gpio);
}
-static void ssb_gpio_extif_set_value(struct gpio_chip *chip, unsigned gpio,
+static void ssb_gpio_extif_set_value(struct gpio_chip *chip, unsigned int gpio,
int value)
{
struct ssb_bus *bus = gpiochip_get_data(chip);
@@ -272,7 +272,7 @@ static void ssb_gpio_extif_set_value(struct gpio_chip *chip, unsigned gpio,
}
static int ssb_gpio_extif_direction_input(struct gpio_chip *chip,
- unsigned gpio)
+ unsigned int gpio)
{
struct ssb_bus *bus = gpiochip_get_data(chip);
@@ -281,7 +281,7 @@ static int ssb_gpio_extif_direction_input(struct gpio_chip *chip,
}
static int ssb_gpio_extif_direction_output(struct gpio_chip *chip,
- unsigned gpio, int value)
+ unsigned int gpio, int value)
{
struct ssb_bus *bus = gpiochip_get_data(chip);
diff --git a/drivers/staging/emxx_udc/Kconfig b/drivers/staging/emxx_udc/Kconfig
index cc3402020487..d7577096fb25 100644
--- a/drivers/staging/emxx_udc/Kconfig
+++ b/drivers/staging/emxx_udc/Kconfig
@@ -1,5 +1,5 @@
config USB_EMXX
- bool "EMXX USB Function Device Controller"
+ tristate "EMXX USB Function Device Controller"
depends on USB_GADGET && (ARCH_SHMOBILE || (ARM && COMPILE_TEST))
help
The Emma Mobile series of SoCs from Renesas Electronics and
diff --git a/drivers/staging/emxx_udc/emxx_udc.c b/drivers/staging/emxx_udc/emxx_udc.c
index 3bd91758b2da..3b56b2826263 100644
--- a/drivers/staging/emxx_udc/emxx_udc.c
+++ b/drivers/staging/emxx_udc/emxx_udc.c
@@ -15,7 +15,7 @@
*/
#include <linux/kernel.h>
-#include <linux/init.h>
+#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/ioport.h>
@@ -39,9 +39,11 @@
#include "emxx_udc.h"
+#define DRIVER_DESC "EMXX UDC driver"
#define DMA_ADDR_INVALID (~(dma_addr_t)0)
static const char driver_name[] = "emxx_udc";
+static const char driver_desc[] = DRIVER_DESC;
/*===========================================================================*/
/* Prototype */
@@ -3296,6 +3298,28 @@ static void nbu2ss_drv_shutdown(struct platform_device *pdev)
}
/*-------------------------------------------------------------------------*/
+static int nbu2ss_drv_remove(struct platform_device *pdev)
+{
+ struct nbu2ss_udc *udc;
+ struct nbu2ss_ep *ep;
+ int i;
+
+ udc = &udc_controller;
+
+ for (i = 0; i < NUM_ENDPOINTS; i++) {
+ ep = &udc->ep[i];
+ if (ep->virt_buf)
+ dma_free_coherent(NULL, PAGE_SIZE,
+ (void *)ep->virt_buf, ep->phys_buf);
+ }
+
+ /* Interrupt Handler - Release */
+ free_irq(INT_VBUS, udc);
+
+ return 0;
+}
+
+/*-------------------------------------------------------------------------*/
static int nbu2ss_drv_suspend(struct platform_device *pdev, pm_message_t state)
{
struct nbu2ss_udc *udc;
@@ -3347,12 +3371,16 @@ static int nbu2ss_drv_resume(struct platform_device *pdev)
static struct platform_driver udc_driver = {
.probe = nbu2ss_drv_probe,
.shutdown = nbu2ss_drv_shutdown,
+ .remove = nbu2ss_drv_remove,
.suspend = nbu2ss_drv_suspend,
.resume = nbu2ss_drv_resume,
.driver = {
- .name = driver_name,
- .suppress_bind_attrs = true,
+ .name = driver_name,
},
};
-builtin_platform_driver(udc_driver);
+module_platform_driver(udc_driver);
+
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_AUTHOR("Renesas Electronics Corporation");
+MODULE_LICENSE("GPL");
diff --git a/drivers/staging/lustre/lustre/llite/dcache.c b/drivers/staging/lustre/lustre/llite/dcache.c
index 581a63a0a63e..463b1a360733 100644
--- a/drivers/staging/lustre/lustre/llite/dcache.c
+++ b/drivers/staging/lustre/lustre/llite/dcache.c
@@ -78,7 +78,7 @@ static void ll_release(struct dentry *de)
* INVALID) so d_lookup() matches it, but we have no lock on it (so
* lock_match() fails) and we spin around real_lookup().
*/
-static int ll_dcompare(const struct dentry *parent, const struct dentry *dentry,
+static int ll_dcompare(const struct dentry *dentry,
unsigned int len, const char *str,
const struct qstr *name)
{
diff --git a/drivers/staging/lustre/lustre/llite/statahead.c b/drivers/staging/lustre/lustre/llite/statahead.c
index 8e52722266fe..c1cb6b19e724 100644
--- a/drivers/staging/lustre/lustre/llite/statahead.c
+++ b/drivers/staging/lustre/lustre/llite/statahead.c
@@ -781,7 +781,7 @@ static int sa_args_init(struct inode *dir, struct inode *child,
struct ll_sa_entry *entry, struct md_enqueue_info **pmi,
struct ldlm_enqueue_info **pei)
{
- struct qstr *qstr = &entry->se_qstr;
+ const struct qstr *qstr = &entry->se_qstr;
struct ll_inode_info *lli = ll_i2info(dir);
struct md_enqueue_info *minfo;
struct ldlm_enqueue_info *einfo;
@@ -1340,7 +1340,7 @@ enum {
static int is_first_dirent(struct inode *dir, struct dentry *dentry)
{
struct ll_dir_chain chain;
- struct qstr *target = &dentry->d_name;
+ const struct qstr *target = &dentry->d_name;
struct page *page;
__u64 pos = 0;
int dot_de;
diff --git a/drivers/staging/media/Kconfig b/drivers/staging/media/Kconfig
index cae42e56f270..7292f23954df 100644
--- a/drivers/staging/media/Kconfig
+++ b/drivers/staging/media/Kconfig
@@ -16,7 +16,7 @@ menuconfig STAGING_MEDIA
If in doubt, say N here.
-if STAGING_MEDIA
+if STAGING_MEDIA && MEDIA_SUPPORT
# Please keep them in alphabetic order
source "drivers/staging/media/bcm2048/Kconfig"
diff --git a/drivers/staging/media/cec/cec-adap.c b/drivers/staging/media/cec/cec-adap.c
index 9fffddb7ac7e..b2393bbacb26 100644
--- a/drivers/staging/media/cec/cec-adap.c
+++ b/drivers/staging/media/cec/cec-adap.c
@@ -1252,7 +1252,7 @@ int __cec_s_log_addrs(struct cec_adapter *adap,
return -EINVAL;
}
/* Zero unused part of the feature array */
- memset(features + i, 0, feature_sz - i);
+ memset(features + i + 1, 0, feature_sz - i - 1);
}
if (log_addrs->cec_version >= CEC_OP_CEC_VERSION_2_0) {
diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c
index 50f3d3a0dd7b..39b928c2849d 100644
--- a/drivers/target/iscsi/iscsi_target.c
+++ b/drivers/target/iscsi/iscsi_target.c
@@ -492,7 +492,8 @@ void iscsit_aborted_task(struct iscsi_conn *conn, struct iscsi_cmd *cmd)
bool scsi_cmd = (cmd->iscsi_opcode == ISCSI_OP_SCSI_CMD);
spin_lock_bh(&conn->cmd_lock);
- if (!list_empty(&cmd->i_conn_node))
+ if (!list_empty(&cmd->i_conn_node) &&
+ !(cmd->se_cmd.transport_state & CMD_T_FABRIC_STOP))
list_del_init(&cmd->i_conn_node);
spin_unlock_bh(&conn->cmd_lock);
@@ -4034,6 +4035,7 @@ int iscsi_target_rx_thread(void *arg)
static void iscsit_release_commands_from_conn(struct iscsi_conn *conn)
{
+ LIST_HEAD(tmp_list);
struct iscsi_cmd *cmd = NULL, *cmd_tmp = NULL;
struct iscsi_session *sess = conn->sess;
/*
@@ -4042,18 +4044,26 @@ static void iscsit_release_commands_from_conn(struct iscsi_conn *conn)
* has been reset -> returned sleeping pre-handler state.
*/
spin_lock_bh(&conn->cmd_lock);
- list_for_each_entry_safe(cmd, cmd_tmp, &conn->conn_cmd_list, i_conn_node) {
+ list_splice_init(&conn->conn_cmd_list, &tmp_list);
+ list_for_each_entry(cmd, &tmp_list, i_conn_node) {
+ struct se_cmd *se_cmd = &cmd->se_cmd;
+
+ if (se_cmd->se_tfo != NULL) {
+ spin_lock(&se_cmd->t_state_lock);
+ se_cmd->transport_state |= CMD_T_FABRIC_STOP;
+ spin_unlock(&se_cmd->t_state_lock);
+ }
+ }
+ spin_unlock_bh(&conn->cmd_lock);
+
+ list_for_each_entry_safe(cmd, cmd_tmp, &tmp_list, i_conn_node) {
list_del_init(&cmd->i_conn_node);
- spin_unlock_bh(&conn->cmd_lock);
iscsit_increment_maxcmdsn(cmd, sess);
-
iscsit_free_cmd(cmd, true);
- spin_lock_bh(&conn->cmd_lock);
}
- spin_unlock_bh(&conn->cmd_lock);
}
static void iscsit_stop_timers_for_cmds(
diff --git a/drivers/target/iscsi/iscsi_target_login.c b/drivers/target/iscsi/iscsi_target_login.c
index b5212f0f9571..adf419fa4291 100644
--- a/drivers/target/iscsi/iscsi_target_login.c
+++ b/drivers/target/iscsi/iscsi_target_login.c
@@ -1371,8 +1371,9 @@ static int __iscsi_target_login_thread(struct iscsi_np *np)
}
login->zero_tsih = zero_tsih;
- conn->sess->se_sess->sup_prot_ops =
- conn->conn_transport->iscsit_get_sup_prot_ops(conn);
+ if (conn->sess)
+ conn->sess->se_sess->sup_prot_ops =
+ conn->conn_transport->iscsit_get_sup_prot_ops(conn);
tpg = conn->tpg;
if (!tpg) {
diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c
index a4046ca6e60d..6b423485c5d6 100644
--- a/drivers/target/target_core_device.c
+++ b/drivers/target/target_core_device.c
@@ -821,13 +821,15 @@ struct se_device *target_alloc_device(struct se_hba *hba, const char *name)
* in ATA and we need to set TPE=1
*/
bool target_configure_unmap_from_queue(struct se_dev_attrib *attrib,
- struct request_queue *q, int block_size)
+ struct request_queue *q)
{
+ int block_size = queue_logical_block_size(q);
+
if (!blk_queue_discard(q))
return false;
- attrib->max_unmap_lba_count = (q->limits.max_discard_sectors << 9) /
- block_size;
+ attrib->max_unmap_lba_count =
+ q->limits.max_discard_sectors >> (ilog2(block_size) - 9);
/*
* Currently hardcoded to 1 in Linux/SCSI code..
*/
diff --git a/drivers/target/target_core_file.c b/drivers/target/target_core_file.c
index 75f0f08b2a34..d545993df18b 100644
--- a/drivers/target/target_core_file.c
+++ b/drivers/target/target_core_file.c
@@ -161,8 +161,7 @@ static int fd_configure_device(struct se_device *dev)
dev_size, div_u64(dev_size, fd_dev->fd_block_size),
fd_dev->fd_block_size);
- if (target_configure_unmap_from_queue(&dev->dev_attrib, q,
- fd_dev->fd_block_size))
+ if (target_configure_unmap_from_queue(&dev->dev_attrib, q))
pr_debug("IFILE: BLOCK Discard support available,"
" disabled by default\n");
/*
@@ -523,7 +522,7 @@ fd_execute_rw(struct se_cmd *cmd, struct scatterlist *sgl, u32 sgl_nents,
*/
if (cmd->data_length > FD_MAX_BYTES) {
pr_err("FILEIO: Not able to process I/O of %u bytes due to"
- "FD_MAX_BYTES: %u iovec count limitiation\n",
+ "FD_MAX_BYTES: %u iovec count limitation\n",
cmd->data_length, FD_MAX_BYTES);
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
}
diff --git a/drivers/target/target_core_iblock.c b/drivers/target/target_core_iblock.c
index 22af12f8b8eb..372d744315f3 100644
--- a/drivers/target/target_core_iblock.c
+++ b/drivers/target/target_core_iblock.c
@@ -121,8 +121,7 @@ static int iblock_configure_device(struct se_device *dev)
dev->dev_attrib.hw_max_sectors = queue_max_hw_sectors(q);
dev->dev_attrib.hw_queue_depth = q->nr_requests;
- if (target_configure_unmap_from_queue(&dev->dev_attrib, q,
- dev->dev_attrib.hw_block_size))
+ if (target_configure_unmap_from_queue(&dev->dev_attrib, q))
pr_debug("IBLOCK: BLOCK Discard support available,"
" disabled by default\n");
@@ -389,7 +388,7 @@ iblock_execute_sync_cache(struct se_cmd *cmd)
bio = bio_alloc(GFP_KERNEL, 0);
bio->bi_end_io = iblock_end_io_flush;
bio->bi_bdev = ib_dev->ibd_bd;
- bio->bi_rw = WRITE_FLUSH;
+ bio_set_op_attrs(bio, REQ_OP_WRITE, WRITE_FLUSH);
if (!immed)
bio->bi_private = cmd;
submit_bio(bio);
diff --git a/drivers/target/target_core_internal.h b/drivers/target/target_core_internal.h
index fc91e85f54ba..e2c970a9d61c 100644
--- a/drivers/target/target_core_internal.h
+++ b/drivers/target/target_core_internal.h
@@ -146,6 +146,7 @@ sense_reason_t target_cmd_size_check(struct se_cmd *cmd, unsigned int size);
void target_qf_do_work(struct work_struct *work);
bool target_check_wce(struct se_device *dev);
bool target_check_fua(struct se_device *dev);
+void __target_execute_cmd(struct se_cmd *, bool);
/* target_core_stat.c */
void target_stat_setup_dev_default_groups(struct se_device *);
diff --git a/drivers/target/target_core_sbc.c b/drivers/target/target_core_sbc.c
index a9057aa07176..04f616b3ba0a 100644
--- a/drivers/target/target_core_sbc.c
+++ b/drivers/target/target_core_sbc.c
@@ -602,7 +602,7 @@ static sense_reason_t compare_and_write_callback(struct se_cmd *cmd, bool succes
cmd->transport_state |= CMD_T_ACTIVE|CMD_T_BUSY|CMD_T_SENT;
spin_unlock_irq(&cmd->t_state_lock);
- __target_execute_cmd(cmd);
+ __target_execute_cmd(cmd, false);
kfree(buf);
return ret;
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index 5ab3967dda43..6094a6beddde 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -754,7 +754,15 @@ EXPORT_SYMBOL(target_complete_cmd);
void target_complete_cmd_with_length(struct se_cmd *cmd, u8 scsi_status, int length)
{
- if (scsi_status == SAM_STAT_GOOD && length < cmd->data_length) {
+ if (scsi_status != SAM_STAT_GOOD) {
+ return;
+ }
+
+ /*
+ * Calculate new residual count based upon length of SCSI data
+ * transferred.
+ */
+ if (length < cmd->data_length) {
if (cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) {
cmd->residual_count += cmd->data_length - length;
} else {
@@ -763,6 +771,12 @@ void target_complete_cmd_with_length(struct se_cmd *cmd, u8 scsi_status, int len
}
cmd->data_length = length;
+ } else if (length > cmd->data_length) {
+ cmd->se_cmd_flags |= SCF_OVERFLOW_BIT;
+ cmd->residual_count = length - cmd->data_length;
+ } else {
+ cmd->se_cmd_flags &= ~(SCF_OVERFLOW_BIT | SCF_UNDERFLOW_BIT);
+ cmd->residual_count = 0;
}
target_complete_cmd(cmd, scsi_status);
@@ -1303,23 +1317,6 @@ target_setup_cmd_from_cdb(struct se_cmd *cmd, unsigned char *cdb)
trace_target_sequencer_start(cmd);
- /*
- * Check for an existing UNIT ATTENTION condition
- */
- ret = target_scsi3_ua_check(cmd);
- if (ret)
- return ret;
-
- ret = target_alua_state_check(cmd);
- if (ret)
- return ret;
-
- ret = target_check_reservation(cmd);
- if (ret) {
- cmd->scsi_status = SAM_STAT_RESERVATION_CONFLICT;
- return ret;
- }
-
ret = dev->transport->parse_cdb(cmd);
if (ret == TCM_UNSUPPORTED_SCSI_OPCODE)
pr_warn_ratelimited("%s/%s: Unsupported SCSI Opcode 0x%02x, sending CHECK_CONDITION.\n",
@@ -1761,20 +1758,45 @@ queue_full:
}
EXPORT_SYMBOL(transport_generic_request_failure);
-void __target_execute_cmd(struct se_cmd *cmd)
+void __target_execute_cmd(struct se_cmd *cmd, bool do_checks)
{
sense_reason_t ret;
- if (cmd->execute_cmd) {
- ret = cmd->execute_cmd(cmd);
- if (ret) {
- spin_lock_irq(&cmd->t_state_lock);
- cmd->transport_state &= ~(CMD_T_BUSY|CMD_T_SENT);
- spin_unlock_irq(&cmd->t_state_lock);
+ if (!cmd->execute_cmd) {
+ ret = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
+ goto err;
+ }
+ if (do_checks) {
+ /*
+ * Check for an existing UNIT ATTENTION condition after
+ * target_handle_task_attr() has done SAM task attr
+ * checking, and possibly have already defered execution
+ * out to target_restart_delayed_cmds() context.
+ */
+ ret = target_scsi3_ua_check(cmd);
+ if (ret)
+ goto err;
- transport_generic_request_failure(cmd, ret);
+ ret = target_alua_state_check(cmd);
+ if (ret)
+ goto err;
+
+ ret = target_check_reservation(cmd);
+ if (ret) {
+ cmd->scsi_status = SAM_STAT_RESERVATION_CONFLICT;
+ goto err;
}
}
+
+ ret = cmd->execute_cmd(cmd);
+ if (!ret)
+ return;
+err:
+ spin_lock_irq(&cmd->t_state_lock);
+ cmd->transport_state &= ~(CMD_T_BUSY|CMD_T_SENT);
+ spin_unlock_irq(&cmd->t_state_lock);
+
+ transport_generic_request_failure(cmd, ret);
}
static int target_write_prot_action(struct se_cmd *cmd)
@@ -1819,6 +1841,8 @@ static bool target_handle_task_attr(struct se_cmd *cmd)
if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH)
return false;
+ cmd->se_cmd_flags |= SCF_TASK_ATTR_SET;
+
/*
* Check for the existence of HEAD_OF_QUEUE, and if true return 1
* to allow the passed struct se_cmd list of tasks to the front of the list.
@@ -1899,7 +1923,7 @@ void target_execute_cmd(struct se_cmd *cmd)
return;
}
- __target_execute_cmd(cmd);
+ __target_execute_cmd(cmd, true);
}
EXPORT_SYMBOL(target_execute_cmd);
@@ -1923,7 +1947,7 @@ static void target_restart_delayed_cmds(struct se_device *dev)
list_del(&cmd->se_delayed_node);
spin_unlock(&dev->delayed_cmd_lock);
- __target_execute_cmd(cmd);
+ __target_execute_cmd(cmd, true);
if (cmd->sam_task_attr == TCM_ORDERED_TAG)
break;
@@ -1941,6 +1965,9 @@ static void transport_complete_task_attr(struct se_cmd *cmd)
if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH)
return;
+ if (!(cmd->se_cmd_flags & SCF_TASK_ATTR_SET))
+ goto restart;
+
if (cmd->sam_task_attr == TCM_SIMPLE_TAG) {
atomic_dec_mb(&dev->simple_cmds);
dev->dev_cur_ordered_id++;
@@ -1957,7 +1984,7 @@ static void transport_complete_task_attr(struct se_cmd *cmd)
pr_debug("Incremented dev_cur_ordered_id: %u for ORDERED\n",
dev->dev_cur_ordered_id);
}
-
+restart:
target_restart_delayed_cmds(dev);
}
@@ -2557,15 +2584,10 @@ static void target_release_cmd_kref(struct kref *kref)
bool fabric_stop;
spin_lock_irqsave(&se_sess->sess_cmd_lock, flags);
- if (list_empty(&se_cmd->se_cmd_list)) {
- spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags);
- target_free_cmd_mem(se_cmd);
- se_cmd->se_tfo->release_cmd(se_cmd);
- return;
- }
spin_lock(&se_cmd->t_state_lock);
- fabric_stop = (se_cmd->transport_state & CMD_T_FABRIC_STOP);
+ fabric_stop = (se_cmd->transport_state & CMD_T_FABRIC_STOP) &&
+ (se_cmd->transport_state & CMD_T_ABORTED);
spin_unlock(&se_cmd->t_state_lock);
if (se_cmd->cmd_wait_set || fabric_stop) {
diff --git a/drivers/target/tcm_fc/tfc_sess.c b/drivers/target/tcm_fc/tfc_sess.c
index f5186a744399..6ffbb603d912 100644
--- a/drivers/target/tcm_fc/tfc_sess.c
+++ b/drivers/target/tcm_fc/tfc_sess.c
@@ -91,6 +91,7 @@ static void ft_tport_delete(struct ft_tport *tport)
ft_sess_delete_all(tport);
lport = tport->lport;
+ lport->service_params &= ~FCP_SPPF_TARG_FCN;
BUG_ON(tport != lport->prov[FC_TYPE_FCP]);
RCU_INIT_POINTER(lport->prov[FC_TYPE_FCP], NULL);
@@ -110,6 +111,7 @@ void ft_lport_add(struct fc_lport *lport, void *arg)
{
mutex_lock(&ft_lport_lock);
ft_tport_get(lport);
+ lport->service_params |= FCP_SPPF_TARG_FCN;
mutex_unlock(&ft_lport_lock);
}
diff --git a/drivers/thermal/clock_cooling.c b/drivers/thermal/clock_cooling.c
index 1b4ff0f4c716..ed5dd0e88657 100644
--- a/drivers/thermal/clock_cooling.c
+++ b/drivers/thermal/clock_cooling.c
@@ -426,6 +426,7 @@ clock_cooling_register(struct device *dev, const char *clock_name)
if (!ccdev)
return ERR_PTR(-ENOMEM);
+ mutex_init(&ccdev->lock);
ccdev->dev = dev;
ccdev->clk = devm_clk_get(dev, clock_name);
if (IS_ERR(ccdev->clk))
diff --git a/drivers/thermal/fair_share.c b/drivers/thermal/fair_share.c
index 34fe36504a55..68bd1b569118 100644
--- a/drivers/thermal/fair_share.c
+++ b/drivers/thermal/fair_share.c
@@ -116,7 +116,9 @@ static int fair_share_throttle(struct thermal_zone_device *tz, int trip)
instance->target = get_target_state(tz, cdev, percentage,
cur_trip_level);
+ mutex_lock(&instance->cdev->lock);
instance->cdev->updated = false;
+ mutex_unlock(&instance->cdev->lock);
thermal_cdev_update(cdev);
}
return 0;
diff --git a/drivers/thermal/gov_bang_bang.c b/drivers/thermal/gov_bang_bang.c
index fc52016d4e85..bb118a152cbb 100644
--- a/drivers/thermal/gov_bang_bang.c
+++ b/drivers/thermal/gov_bang_bang.c
@@ -71,7 +71,9 @@ static void thermal_zone_trip_update(struct thermal_zone_device *tz, int trip)
dev_dbg(&instance->cdev->device, "target=%d\n",
(int)instance->target);
+ mutex_lock(&instance->cdev->lock);
instance->cdev->updated = false; /* cdev needs update */
+ mutex_unlock(&instance->cdev->lock);
}
mutex_unlock(&tz->lock);
diff --git a/drivers/thermal/intel_pch_thermal.c b/drivers/thermal/intel_pch_thermal.c
index 6a6ec1c95a7a..9b4815e81b0d 100644
--- a/drivers/thermal/intel_pch_thermal.c
+++ b/drivers/thermal/intel_pch_thermal.c
@@ -21,6 +21,7 @@
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/thermal.h>
+#include <linux/pm.h>
/* Intel PCH thermal Device IDs */
#define PCH_THERMAL_DID_WPT 0x9CA4 /* Wildcat Point */
@@ -65,6 +66,7 @@ struct pch_thermal_device {
unsigned long crt_temp;
int hot_trip_id;
unsigned long hot_temp;
+ bool bios_enabled;
};
static int pch_wpt_init(struct pch_thermal_device *ptd, int *nr_trips)
@@ -75,8 +77,10 @@ static int pch_wpt_init(struct pch_thermal_device *ptd, int *nr_trips)
*nr_trips = 0;
/* Check if BIOS has already enabled thermal sensor */
- if (WPT_TSS_TSDSS & readb(ptd->hw_base + WPT_TSS))
+ if (WPT_TSS_TSDSS & readb(ptd->hw_base + WPT_TSS)) {
+ ptd->bios_enabled = true;
goto read_trips;
+ }
tsel = readb(ptd->hw_base + WPT_TSEL);
/*
@@ -130,9 +134,39 @@ static int pch_wpt_get_temp(struct pch_thermal_device *ptd, int *temp)
return 0;
}
+static int pch_wpt_suspend(struct pch_thermal_device *ptd)
+{
+ u8 tsel;
+
+ if (ptd->bios_enabled)
+ return 0;
+
+ tsel = readb(ptd->hw_base + WPT_TSEL);
+
+ writeb(tsel & 0xFE, ptd->hw_base + WPT_TSEL);
+
+ return 0;
+}
+
+static int pch_wpt_resume(struct pch_thermal_device *ptd)
+{
+ u8 tsel;
+
+ if (ptd->bios_enabled)
+ return 0;
+
+ tsel = readb(ptd->hw_base + WPT_TSEL);
+
+ writeb(tsel | WPT_TSEL_ETS, ptd->hw_base + WPT_TSEL);
+
+ return 0;
+}
+
struct pch_dev_ops {
int (*hw_init)(struct pch_thermal_device *ptd, int *nr_trips);
int (*get_temp)(struct pch_thermal_device *ptd, int *temp);
+ int (*suspend)(struct pch_thermal_device *ptd);
+ int (*resume)(struct pch_thermal_device *ptd);
};
@@ -140,6 +174,8 @@ struct pch_dev_ops {
static const struct pch_dev_ops pch_dev_ops_wpt = {
.hw_init = pch_wpt_init,
.get_temp = pch_wpt_get_temp,
+ .suspend = pch_wpt_suspend,
+ .resume = pch_wpt_resume,
};
static int pch_thermal_get_temp(struct thermal_zone_device *tzd, int *temp)
@@ -269,6 +305,22 @@ static void intel_pch_thermal_remove(struct pci_dev *pdev)
pci_disable_device(pdev);
}
+static int intel_pch_thermal_suspend(struct device *device)
+{
+ struct pci_dev *pdev = to_pci_dev(device);
+ struct pch_thermal_device *ptd = pci_get_drvdata(pdev);
+
+ return ptd->ops->suspend(ptd);
+}
+
+static int intel_pch_thermal_resume(struct device *device)
+{
+ struct pci_dev *pdev = to_pci_dev(device);
+ struct pch_thermal_device *ptd = pci_get_drvdata(pdev);
+
+ return ptd->ops->resume(ptd);
+}
+
static struct pci_device_id intel_pch_thermal_id[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCH_THERMAL_DID_WPT) },
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCH_THERMAL_DID_SKL) },
@@ -276,11 +328,17 @@ static struct pci_device_id intel_pch_thermal_id[] = {
};
MODULE_DEVICE_TABLE(pci, intel_pch_thermal_id);
+static const struct dev_pm_ops intel_pch_pm_ops = {
+ .suspend = intel_pch_thermal_suspend,
+ .resume = intel_pch_thermal_resume,
+};
+
static struct pci_driver intel_pch_thermal_driver = {
.name = "intel_pch_thermal",
.id_table = intel_pch_thermal_id,
.probe = intel_pch_thermal_probe,
.remove = intel_pch_thermal_remove,
+ .driver.pm = &intel_pch_pm_ops,
};
module_pci_driver(intel_pch_thermal_driver);
diff --git a/drivers/thermal/intel_powerclamp.c b/drivers/thermal/intel_powerclamp.c
index 015ce2eb6eb7..0e4dc0afcfd2 100644
--- a/drivers/thermal/intel_powerclamp.c
+++ b/drivers/thermal/intel_powerclamp.c
@@ -388,7 +388,7 @@ static int clamp_thread(void *arg)
int sleeptime;
unsigned long target_jiffies;
unsigned int guard;
- unsigned int compensation = 0;
+ unsigned int compensated_ratio;
int interval; /* jiffies to sleep for each attempt */
unsigned int duration_jiffies = msecs_to_jiffies(duration);
unsigned int window_size_now;
@@ -409,8 +409,11 @@ static int clamp_thread(void *arg)
* c-states, thus we need to compensate the injected idle ratio
* to achieve the actual target reported by the HW.
*/
- compensation = get_compensation(target_ratio);
- interval = duration_jiffies*100/(target_ratio+compensation);
+ compensated_ratio = target_ratio +
+ get_compensation(target_ratio);
+ if (compensated_ratio <= 0)
+ compensated_ratio = 1;
+ interval = duration_jiffies * 100 / compensated_ratio;
/* align idle time */
target_jiffies = roundup(jiffies, interval);
@@ -647,8 +650,8 @@ static int powerclamp_set_cur_state(struct thermal_cooling_device *cdev,
goto exit_set;
} else if (set_target_ratio > 0 && new_target_ratio == 0) {
pr_info("Stop forced idle injection\n");
- set_target_ratio = 0;
end_power_clamp();
+ set_target_ratio = 0;
} else /* adjust currently running */ {
set_target_ratio = new_target_ratio;
/* make new set_target_ratio visible to other cpus */
diff --git a/drivers/thermal/power_allocator.c b/drivers/thermal/power_allocator.c
index 2f1a863a8e15..b4d3116cfdaf 100644
--- a/drivers/thermal/power_allocator.c
+++ b/drivers/thermal/power_allocator.c
@@ -529,7 +529,9 @@ static void allow_maximum_power(struct thermal_zone_device *tz)
continue;
instance->target = 0;
+ mutex_lock(&instance->cdev->lock);
instance->cdev->updated = false;
+ mutex_unlock(&instance->cdev->lock);
thermal_cdev_update(instance->cdev);
}
}
diff --git a/drivers/thermal/step_wise.c b/drivers/thermal/step_wise.c
index ea9366ad3e6b..bcef2e7c4ec9 100644
--- a/drivers/thermal/step_wise.c
+++ b/drivers/thermal/step_wise.c
@@ -175,7 +175,9 @@ static void thermal_zone_trip_update(struct thermal_zone_device *tz, int trip)
update_passive_instance(tz, trip_type, -1);
instance->initialized = true;
+ mutex_lock(&instance->cdev->lock);
instance->cdev->updated = false; /* cdev needs update */
+ mutex_unlock(&instance->cdev->lock);
}
mutex_unlock(&tz->lock);
diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
index 5133cd1e10b7..e2fc6161dded 100644
--- a/drivers/thermal/thermal_core.c
+++ b/drivers/thermal/thermal_core.c
@@ -1093,7 +1093,9 @@ int power_actor_set_power(struct thermal_cooling_device *cdev,
return ret;
instance->target = state;
+ mutex_lock(&cdev->lock);
cdev->updated = false;
+ mutex_unlock(&cdev->lock);
thermal_cdev_update(cdev);
return 0;
@@ -1623,11 +1625,13 @@ void thermal_cdev_update(struct thermal_cooling_device *cdev)
struct thermal_instance *instance;
unsigned long target = 0;
+ mutex_lock(&cdev->lock);
/* cooling device is updated*/
- if (cdev->updated)
+ if (cdev->updated) {
+ mutex_unlock(&cdev->lock);
return;
+ }
- mutex_lock(&cdev->lock);
/* Make sure cdev enters the deepest cooling state */
list_for_each_entry(instance, &cdev->thermal_instances, cdev_node) {
dev_dbg(&cdev->device, "zone%d->target=%lu\n",
@@ -1637,9 +1641,9 @@ void thermal_cdev_update(struct thermal_cooling_device *cdev)
if (instance->target > target)
target = instance->target;
}
- mutex_unlock(&cdev->lock);
cdev->ops->set_cur_state(cdev, target);
cdev->updated = true;
+ mutex_unlock(&cdev->lock);
trace_cdev_update(cdev, target);
dev_dbg(&cdev->device, "set to state %lu\n", target);
}
diff --git a/drivers/thermal/thermal_hwmon.c b/drivers/thermal/thermal_hwmon.c
index 06fd2ed9ef9d..c41c7742903a 100644
--- a/drivers/thermal/thermal_hwmon.c
+++ b/drivers/thermal/thermal_hwmon.c
@@ -232,6 +232,7 @@ int thermal_add_hwmon_sysfs(struct thermal_zone_device *tz)
return result;
}
+EXPORT_SYMBOL_GPL(thermal_add_hwmon_sysfs);
void thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz)
{
@@ -270,3 +271,4 @@ void thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz)
hwmon_device_unregister(hwmon->device);
kfree(hwmon);
}
+EXPORT_SYMBOL_GPL(thermal_remove_hwmon_sysfs);
diff --git a/drivers/tty/serial/ar933x_uart.c b/drivers/tty/serial/ar933x_uart.c
index 1519d2ca7705..73137f4aac20 100644
--- a/drivers/tty/serial/ar933x_uart.c
+++ b/drivers/tty/serial/ar933x_uart.c
@@ -54,7 +54,7 @@ struct ar933x_uart_port {
static inline bool ar933x_uart_console_enabled(void)
{
- return config_enabled(CONFIG_SERIAL_AR933X_CONSOLE);
+ return IS_ENABLED(CONFIG_SERIAL_AR933X_CONSOLE);
}
static inline unsigned int ar933x_uart_read(struct ar933x_uart_port *up,
@@ -636,7 +636,7 @@ static int ar933x_uart_probe(struct platform_device *pdev)
int ret;
np = pdev->dev.of_node;
- if (config_enabled(CONFIG_OF) && np) {
+ if (IS_ENABLED(CONFIG_OF) && np) {
id = of_alias_get_id(np, "serial");
if (id < 0) {
dev_err(&pdev->dev, "unable to get alias id, err=%d\n",
diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c
index 96a70789b4c2..4d6a5c672a3d 100644
--- a/drivers/usb/serial/cp210x.c
+++ b/drivers/usb/serial/cp210x.c
@@ -496,12 +496,10 @@ static int cp210x_write_reg_block(struct usb_serial_port *port, u8 req,
void *dmabuf;
int result;
- dmabuf = kmalloc(bufsize, GFP_KERNEL);
+ dmabuf = kmemdup(buf, bufsize, GFP_KERNEL);
if (!dmabuf)
return -ENOMEM;
- memcpy(dmabuf, buf, bufsize);
-
result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
req, REQTYPE_HOST_TO_INTERFACE, 0,
port_priv->bInterfaceNumber, dmabuf, bufsize,
diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c
index ae8c0365abd6..944de657a07a 100644
--- a/drivers/usb/serial/generic.c
+++ b/drivers/usb/serial/generic.c
@@ -350,6 +350,7 @@ void usb_serial_generic_read_bulk_callback(struct urb *urb)
struct usb_serial_port *port = urb->context;
unsigned char *data = urb->transfer_buffer;
unsigned long flags;
+ int status = urb->status;
int i;
for (i = 0; i < ARRAY_SIZE(port->read_urbs); ++i) {
@@ -360,22 +361,22 @@ void usb_serial_generic_read_bulk_callback(struct urb *urb)
dev_dbg(&port->dev, "%s - urb %d, len %d\n", __func__, i,
urb->actual_length);
- switch (urb->status) {
+ switch (status) {
case 0:
break;
case -ENOENT:
case -ECONNRESET:
case -ESHUTDOWN:
dev_dbg(&port->dev, "%s - urb stopped: %d\n",
- __func__, urb->status);
+ __func__, status);
return;
case -EPIPE:
dev_err(&port->dev, "%s - urb stopped: %d\n",
- __func__, urb->status);
+ __func__, status);
return;
default:
dev_dbg(&port->dev, "%s - nonzero urb status: %d\n",
- __func__, urb->status);
+ __func__, status);
goto resubmit;
}
@@ -399,6 +400,7 @@ void usb_serial_generic_write_bulk_callback(struct urb *urb)
{
unsigned long flags;
struct usb_serial_port *port = urb->context;
+ int status = urb->status;
int i;
for (i = 0; i < ARRAY_SIZE(port->write_urbs); ++i) {
@@ -410,22 +412,22 @@ void usb_serial_generic_write_bulk_callback(struct urb *urb)
set_bit(i, &port->write_urbs_free);
spin_unlock_irqrestore(&port->lock, flags);
- switch (urb->status) {
+ switch (status) {
case 0:
break;
case -ENOENT:
case -ECONNRESET:
case -ESHUTDOWN:
dev_dbg(&port->dev, "%s - urb stopped: %d\n",
- __func__, urb->status);
+ __func__, status);
return;
case -EPIPE:
dev_err_console(port, "%s - urb stopped: %d\n",
- __func__, urb->status);
+ __func__, status);
return;
default:
dev_err_console(port, "%s - nonzero urb status: %d\n",
- __func__, urb->status);
+ __func__, status);
goto resubmit;
}
diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
index d96d423d00e6..8e07536c233a 100644
--- a/drivers/usb/serial/option.c
+++ b/drivers/usb/serial/option.c
@@ -273,6 +273,7 @@ static void option_instat_callback(struct urb *urb);
#define TELIT_PRODUCT_LE922_USBCFG5 0x1045
#define TELIT_PRODUCT_LE920 0x1200
#define TELIT_PRODUCT_LE910 0x1201
+#define TELIT_PRODUCT_LE910_USBCFG4 0x1206
/* ZTE PRODUCTS */
#define ZTE_VENDOR_ID 0x19d2
@@ -1198,6 +1199,8 @@ static const struct usb_device_id option_ids[] = {
.driver_info = (kernel_ulong_t)&telit_le922_blacklist_usbcfg0 },
{ USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE910),
.driver_info = (kernel_ulong_t)&telit_le910_blacklist },
+ { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE910_USBCFG4),
+ .driver_info = (kernel_ulong_t)&telit_le922_blacklist_usbcfg3 },
{ USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE920),
.driver_info = (kernel_ulong_t)&telit_le920_blacklist },
{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_MF622, 0xff, 0xff, 0xff) }, /* ZTE WCDMA products */
diff --git a/drivers/usb/serial/ti_usb_3410_5052.c b/drivers/usb/serial/ti_usb_3410_5052.c
index e7dbbef2af2a..07b4bf01061d 100644
--- a/drivers/usb/serial/ti_usb_3410_5052.c
+++ b/drivers/usb/serial/ti_usb_3410_5052.c
@@ -1,5 +1,4 @@
-/* vi: ts=8 sw=8
- *
+/*
* TI 3410/5052 USB Serial Driver
*
* Copyright (C) 2004 Texas Instruments
@@ -35,9 +34,238 @@
#include <linux/usb.h>
#include <linux/usb/serial.h>
-#include "ti_usb_3410_5052.h"
-
-/* Defines */
+/* Configuration ids */
+#define TI_BOOT_CONFIG 1
+#define TI_ACTIVE_CONFIG 2
+
+/* Vendor and product ids */
+#define TI_VENDOR_ID 0x0451
+#define IBM_VENDOR_ID 0x04b3
+#define TI_3410_PRODUCT_ID 0x3410
+#define IBM_4543_PRODUCT_ID 0x4543
+#define IBM_454B_PRODUCT_ID 0x454b
+#define IBM_454C_PRODUCT_ID 0x454c
+#define TI_3410_EZ430_ID 0xF430 /* TI ez430 development tool */
+#define TI_5052_BOOT_PRODUCT_ID 0x5052 /* no EEPROM, no firmware */
+#define TI_5152_BOOT_PRODUCT_ID 0x5152 /* no EEPROM, no firmware */
+#define TI_5052_EEPROM_PRODUCT_ID 0x505A /* EEPROM, no firmware */
+#define TI_5052_FIRMWARE_PRODUCT_ID 0x505F /* firmware is running */
+#define FRI2_PRODUCT_ID 0x5053 /* Fish River Island II */
+
+/* Multi-Tech vendor and product ids */
+#define MTS_VENDOR_ID 0x06E0
+#define MTS_GSM_NO_FW_PRODUCT_ID 0xF108
+#define MTS_CDMA_NO_FW_PRODUCT_ID 0xF109
+#define MTS_CDMA_PRODUCT_ID 0xF110
+#define MTS_GSM_PRODUCT_ID 0xF111
+#define MTS_EDGE_PRODUCT_ID 0xF112
+#define MTS_MT9234MU_PRODUCT_ID 0xF114
+#define MTS_MT9234ZBA_PRODUCT_ID 0xF115
+#define MTS_MT9234ZBAOLD_PRODUCT_ID 0x0319
+
+/* Abbott Diabetics vendor and product ids */
+#define ABBOTT_VENDOR_ID 0x1a61
+#define ABBOTT_STEREO_PLUG_ID 0x3410
+#define ABBOTT_PRODUCT_ID ABBOTT_STEREO_PLUG_ID
+#define ABBOTT_STRIP_PORT_ID 0x3420
+
+/* Honeywell vendor and product IDs */
+#define HONEYWELL_VENDOR_ID 0x10ac
+#define HONEYWELL_HGI80_PRODUCT_ID 0x0102 /* Honeywell HGI80 */
+
+/* Moxa UPORT 11x0 vendor and product IDs */
+#define MXU1_VENDOR_ID 0x110a
+#define MXU1_1110_PRODUCT_ID 0x1110
+#define MXU1_1130_PRODUCT_ID 0x1130
+#define MXU1_1150_PRODUCT_ID 0x1150
+#define MXU1_1151_PRODUCT_ID 0x1151
+#define MXU1_1131_PRODUCT_ID 0x1131
+
+/* Commands */
+#define TI_GET_VERSION 0x01
+#define TI_GET_PORT_STATUS 0x02
+#define TI_GET_PORT_DEV_INFO 0x03
+#define TI_GET_CONFIG 0x04
+#define TI_SET_CONFIG 0x05
+#define TI_OPEN_PORT 0x06
+#define TI_CLOSE_PORT 0x07
+#define TI_START_PORT 0x08
+#define TI_STOP_PORT 0x09
+#define TI_TEST_PORT 0x0A
+#define TI_PURGE_PORT 0x0B
+#define TI_RESET_EXT_DEVICE 0x0C
+#define TI_WRITE_DATA 0x80
+#define TI_READ_DATA 0x81
+#define TI_REQ_TYPE_CLASS 0x82
+
+/* Module identifiers */
+#define TI_I2C_PORT 0x01
+#define TI_IEEE1284_PORT 0x02
+#define TI_UART1_PORT 0x03
+#define TI_UART2_PORT 0x04
+#define TI_RAM_PORT 0x05
+
+/* Modem status */
+#define TI_MSR_DELTA_CTS 0x01
+#define TI_MSR_DELTA_DSR 0x02
+#define TI_MSR_DELTA_RI 0x04
+#define TI_MSR_DELTA_CD 0x08
+#define TI_MSR_CTS 0x10
+#define TI_MSR_DSR 0x20
+#define TI_MSR_RI 0x40
+#define TI_MSR_CD 0x80
+#define TI_MSR_DELTA_MASK 0x0F
+#define TI_MSR_MASK 0xF0
+
+/* Line status */
+#define TI_LSR_OVERRUN_ERROR 0x01
+#define TI_LSR_PARITY_ERROR 0x02
+#define TI_LSR_FRAMING_ERROR 0x04
+#define TI_LSR_BREAK 0x08
+#define TI_LSR_ERROR 0x0F
+#define TI_LSR_RX_FULL 0x10
+#define TI_LSR_TX_EMPTY 0x20
+
+/* Line control */
+#define TI_LCR_BREAK 0x40
+
+/* Modem control */
+#define TI_MCR_LOOP 0x04
+#define TI_MCR_DTR 0x10
+#define TI_MCR_RTS 0x20
+
+/* Mask settings */
+#define TI_UART_ENABLE_RTS_IN 0x0001
+#define TI_UART_DISABLE_RTS 0x0002
+#define TI_UART_ENABLE_PARITY_CHECKING 0x0008
+#define TI_UART_ENABLE_DSR_OUT 0x0010
+#define TI_UART_ENABLE_CTS_OUT 0x0020
+#define TI_UART_ENABLE_X_OUT 0x0040
+#define TI_UART_ENABLE_XA_OUT 0x0080
+#define TI_UART_ENABLE_X_IN 0x0100
+#define TI_UART_ENABLE_DTR_IN 0x0800
+#define TI_UART_DISABLE_DTR 0x1000
+#define TI_UART_ENABLE_MS_INTS 0x2000
+#define TI_UART_ENABLE_AUTO_START_DMA 0x4000
+
+/* Parity */
+#define TI_UART_NO_PARITY 0x00
+#define TI_UART_ODD_PARITY 0x01
+#define TI_UART_EVEN_PARITY 0x02
+#define TI_UART_MARK_PARITY 0x03
+#define TI_UART_SPACE_PARITY 0x04
+
+/* Stop bits */
+#define TI_UART_1_STOP_BITS 0x00
+#define TI_UART_1_5_STOP_BITS 0x01
+#define TI_UART_2_STOP_BITS 0x02
+
+/* Bits per character */
+#define TI_UART_5_DATA_BITS 0x00
+#define TI_UART_6_DATA_BITS 0x01
+#define TI_UART_7_DATA_BITS 0x02
+#define TI_UART_8_DATA_BITS 0x03
+
+/* 232/485 modes */
+#define TI_UART_232 0x00
+#define TI_UART_485_RECEIVER_DISABLED 0x01
+#define TI_UART_485_RECEIVER_ENABLED 0x02
+
+/* Pipe transfer mode and timeout */
+#define TI_PIPE_MODE_CONTINUOUS 0x01
+#define TI_PIPE_MODE_MASK 0x03
+#define TI_PIPE_TIMEOUT_MASK 0x7C
+#define TI_PIPE_TIMEOUT_ENABLE 0x80
+
+/* Config struct */
+struct ti_uart_config {
+ __u16 wBaudRate;
+ __u16 wFlags;
+ __u8 bDataBits;
+ __u8 bParity;
+ __u8 bStopBits;
+ char cXon;
+ char cXoff;
+ __u8 bUartMode;
+} __packed;
+
+/* Get port status */
+struct ti_port_status {
+ __u8 bCmdCode;
+ __u8 bModuleId;
+ __u8 bErrorCode;
+ __u8 bMSR;
+ __u8 bLSR;
+} __packed;
+
+/* Purge modes */
+#define TI_PURGE_OUTPUT 0x00
+#define TI_PURGE_INPUT 0x80
+
+/* Read/Write data */
+#define TI_RW_DATA_ADDR_SFR 0x10
+#define TI_RW_DATA_ADDR_IDATA 0x20
+#define TI_RW_DATA_ADDR_XDATA 0x30
+#define TI_RW_DATA_ADDR_CODE 0x40
+#define TI_RW_DATA_ADDR_GPIO 0x50
+#define TI_RW_DATA_ADDR_I2C 0x60
+#define TI_RW_DATA_ADDR_FLASH 0x70
+#define TI_RW_DATA_ADDR_DSP 0x80
+
+#define TI_RW_DATA_UNSPECIFIED 0x00
+#define TI_RW_DATA_BYTE 0x01
+#define TI_RW_DATA_WORD 0x02
+#define TI_RW_DATA_DOUBLE_WORD 0x04
+
+struct ti_write_data_bytes {
+ __u8 bAddrType;
+ __u8 bDataType;
+ __u8 bDataCounter;
+ __be16 wBaseAddrHi;
+ __be16 wBaseAddrLo;
+ __u8 bData[0];
+} __packed;
+
+struct ti_read_data_request {
+ __u8 bAddrType;
+ __u8 bDataType;
+ __u8 bDataCounter;
+ __be16 wBaseAddrHi;
+ __be16 wBaseAddrLo;
+} __packed;
+
+struct ti_read_data_bytes {
+ __u8 bCmdCode;
+ __u8 bModuleId;
+ __u8 bErrorCode;
+ __u8 bData[0];
+} __packed;
+
+/* Interrupt struct */
+struct ti_interrupt {
+ __u8 bICode;
+ __u8 bIInfo;
+} __packed;
+
+/* Interrupt codes */
+#define TI_CODE_HARDWARE_ERROR 0xFF
+#define TI_CODE_DATA_ERROR 0x03
+#define TI_CODE_MODEM_STATUS 0x04
+
+/* Download firmware max packet size */
+#define TI_DOWNLOAD_MAX_PACKET_SIZE 64
+
+/* Firmware image header */
+struct ti_firmware_header {
+ __le16 wLength;
+ __u8 bCheckSum;
+} __packed;
+
+/* UART addresses */
+#define TI_UART1_BASE_ADDR 0xFFA0 /* UART 1 base address */
+#define TI_UART2_BASE_ADDR 0xFFB0 /* UART 2 base address */
+#define TI_UART_OFFSET_LCR 0x0002 /* UART MCR register offset */
+#define TI_UART_OFFSET_MCR 0x0004 /* UART MCR register offset */
#define TI_DRIVER_AUTHOR "Al Borchers <alborchers@steinerpoint.com>"
#define TI_DRIVER_DESC "TI USB 3410/5052 Serial Driver"
@@ -58,9 +286,6 @@
#define TI_EXTRA_VID_PID_COUNT 5
-
-/* Structures */
-
struct ti_port {
int tp_is_open;
__u8 tp_msr;
@@ -84,9 +309,6 @@ struct ti_device {
int td_urb_error;
};
-
-/* Function Declarations */
-
static int ti_startup(struct usb_serial *serial);
static void ti_release(struct usb_serial *serial);
static int ti_port_probe(struct usb_serial_port *port);
@@ -136,13 +358,8 @@ static int ti_write_byte(struct usb_serial_port *port, struct ti_device *tdev,
static int ti_download_firmware(struct ti_device *tdev);
-
-/* Data */
-
-/* module parameters */
static int closing_wait = TI_DEFAULT_CLOSING_WAIT;
-/* supported devices */
static const struct usb_device_id ti_id_table_3410[] = {
{ USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) },
{ USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) },
@@ -174,7 +391,7 @@ static const struct usb_device_id ti_id_table_5052[] = {
{ USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) },
{ USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) },
{ USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) },
- { } /* terminator */
+ { }
};
static const struct usb_device_id ti_id_table_combined[] = {
@@ -275,8 +492,6 @@ static struct usb_serial_driver * const serial_drivers[] = {
&ti_1port_device, &ti_2port_device, NULL
};
-/* Module */
-
MODULE_AUTHOR(TI_DRIVER_AUTHOR);
MODULE_DESCRIPTION(TI_DRIVER_DESC);
MODULE_LICENSE("GPL");
@@ -302,8 +517,6 @@ MODULE_DEVICE_TABLE(usb, ti_id_table_combined);
module_usb_serial_driver(serial_drivers, ti_id_table_combined);
-/* Functions */
-
static int ti_startup(struct usb_serial *serial)
{
struct ti_device *tdev;
@@ -319,7 +532,6 @@ static int ti_startup(struct usb_serial *serial)
dev->descriptor.bNumConfigurations,
dev->actconfig->desc.bConfigurationValue);
- /* create device structure */
tdev = kzalloc(sizeof(struct ti_device), GFP_KERNEL);
if (!tdev)
return -ENOMEM;
@@ -435,7 +647,7 @@ static int ti_open(struct tty_struct *tty, struct usb_serial_port *port)
struct urb *urb;
int port_number;
int status;
- __u16 open_settings = (__u8)(TI_PIPE_MODE_CONTINOUS |
+ __u16 open_settings = (__u8)(TI_PIPE_MODE_CONTINUOUS |
TI_PIPE_TIMEOUT_ENABLE |
(TI_TRANSFER_TIMEOUT << 2));
@@ -954,6 +1166,15 @@ static void ti_break(struct tty_struct *tty, int break_state)
dev_dbg(&port->dev, "%s - error setting break, %d\n", __func__, status);
}
+static int ti_get_port_from_code(unsigned char code)
+{
+ return (code >> 4) - 3;
+}
+
+static int ti_get_func_from_code(unsigned char code)
+{
+ return code & 0x0f;
+}
static void ti_interrupt_callback(struct urb *urb)
{
@@ -995,8 +1216,8 @@ static void ti_interrupt_callback(struct urb *urb)
goto exit;
}
- port_number = TI_GET_PORT_FROM_CODE(data[0]);
- function = TI_GET_FUNC_FROM_CODE(data[0]);
+ port_number = ti_get_port_from_code(data[0]);
+ function = ti_get_func_from_code(data[0]);
dev_dbg(dev, "%s - port_number %d, function %d, data 0x%02X\n",
__func__, port_number, function, data[1]);
diff --git a/drivers/usb/serial/ti_usb_3410_5052.h b/drivers/usb/serial/ti_usb_3410_5052.h
deleted file mode 100644
index bbfd3a184600..000000000000
--- a/drivers/usb/serial/ti_usb_3410_5052.h
+++ /dev/null
@@ -1,259 +0,0 @@
-/* vi: ts=8 sw=8
- *
- * TI 3410/5052 USB Serial Driver Header
- *
- * Copyright (C) 2004 Texas Instruments
- *
- * This driver is based on the Linux io_ti driver, which is
- * Copyright (C) 2000-2002 Inside Out Networks
- * Copyright (C) 2001-2002 Greg Kroah-Hartman
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * For questions or problems with this driver, contact Texas Instruments
- * technical support, or Al Borchers <alborchers@steinerpoint.com>, or
- * Peter Berger <pberger@brimson.com>.
- */
-
-#ifndef _TI_3410_5052_H_
-#define _TI_3410_5052_H_
-
-/* Configuration ids */
-#define TI_BOOT_CONFIG 1
-#define TI_ACTIVE_CONFIG 2
-
-/* Vendor and product ids */
-#define TI_VENDOR_ID 0x0451
-#define IBM_VENDOR_ID 0x04b3
-#define TI_3410_PRODUCT_ID 0x3410
-#define IBM_4543_PRODUCT_ID 0x4543
-#define IBM_454B_PRODUCT_ID 0x454b
-#define IBM_454C_PRODUCT_ID 0x454c
-#define TI_3410_EZ430_ID 0xF430 /* TI ez430 development tool */
-#define TI_5052_BOOT_PRODUCT_ID 0x5052 /* no EEPROM, no firmware */
-#define TI_5152_BOOT_PRODUCT_ID 0x5152 /* no EEPROM, no firmware */
-#define TI_5052_EEPROM_PRODUCT_ID 0x505A /* EEPROM, no firmware */
-#define TI_5052_FIRMWARE_PRODUCT_ID 0x505F /* firmware is running */
-#define FRI2_PRODUCT_ID 0x5053 /* Fish River Island II */
-
-/* Multi-Tech vendor and product ids */
-#define MTS_VENDOR_ID 0x06E0
-#define MTS_GSM_NO_FW_PRODUCT_ID 0xF108
-#define MTS_CDMA_NO_FW_PRODUCT_ID 0xF109
-#define MTS_CDMA_PRODUCT_ID 0xF110
-#define MTS_GSM_PRODUCT_ID 0xF111
-#define MTS_EDGE_PRODUCT_ID 0xF112
-#define MTS_MT9234MU_PRODUCT_ID 0xF114
-#define MTS_MT9234ZBA_PRODUCT_ID 0xF115
-#define MTS_MT9234ZBAOLD_PRODUCT_ID 0x0319
-
-/* Abbott Diabetics vendor and product ids */
-#define ABBOTT_VENDOR_ID 0x1a61
-#define ABBOTT_STEREO_PLUG_ID 0x3410
-#define ABBOTT_PRODUCT_ID ABBOTT_STEREO_PLUG_ID
-#define ABBOTT_STRIP_PORT_ID 0x3420
-
-/* Honeywell vendor and product IDs */
-#define HONEYWELL_VENDOR_ID 0x10ac
-#define HONEYWELL_HGI80_PRODUCT_ID 0x0102 /* Honeywell HGI80 */
-
-/* Moxa UPORT 11x0 vendor and product IDs */
-#define MXU1_VENDOR_ID 0x110a
-#define MXU1_1110_PRODUCT_ID 0x1110
-#define MXU1_1130_PRODUCT_ID 0x1130
-#define MXU1_1131_PRODUCT_ID 0x1131
-#define MXU1_1150_PRODUCT_ID 0x1150
-#define MXU1_1151_PRODUCT_ID 0x1151
-
-/* Commands */
-#define TI_GET_VERSION 0x01
-#define TI_GET_PORT_STATUS 0x02
-#define TI_GET_PORT_DEV_INFO 0x03
-#define TI_GET_CONFIG 0x04
-#define TI_SET_CONFIG 0x05
-#define TI_OPEN_PORT 0x06
-#define TI_CLOSE_PORT 0x07
-#define TI_START_PORT 0x08
-#define TI_STOP_PORT 0x09
-#define TI_TEST_PORT 0x0A
-#define TI_PURGE_PORT 0x0B
-#define TI_RESET_EXT_DEVICE 0x0C
-#define TI_WRITE_DATA 0x80
-#define TI_READ_DATA 0x81
-#define TI_REQ_TYPE_CLASS 0x82
-
-/* Module identifiers */
-#define TI_I2C_PORT 0x01
-#define TI_IEEE1284_PORT 0x02
-#define TI_UART1_PORT 0x03
-#define TI_UART2_PORT 0x04
-#define TI_RAM_PORT 0x05
-
-/* Modem status */
-#define TI_MSR_DELTA_CTS 0x01
-#define TI_MSR_DELTA_DSR 0x02
-#define TI_MSR_DELTA_RI 0x04
-#define TI_MSR_DELTA_CD 0x08
-#define TI_MSR_CTS 0x10
-#define TI_MSR_DSR 0x20
-#define TI_MSR_RI 0x40
-#define TI_MSR_CD 0x80
-#define TI_MSR_DELTA_MASK 0x0F
-#define TI_MSR_MASK 0xF0
-
-/* Line status */
-#define TI_LSR_OVERRUN_ERROR 0x01
-#define TI_LSR_PARITY_ERROR 0x02
-#define TI_LSR_FRAMING_ERROR 0x04
-#define TI_LSR_BREAK 0x08
-#define TI_LSR_ERROR 0x0F
-#define TI_LSR_RX_FULL 0x10
-#define TI_LSR_TX_EMPTY 0x20
-
-/* Line control */
-#define TI_LCR_BREAK 0x40
-
-/* Modem control */
-#define TI_MCR_LOOP 0x04
-#define TI_MCR_DTR 0x10
-#define TI_MCR_RTS 0x20
-
-/* Mask settings */
-#define TI_UART_ENABLE_RTS_IN 0x0001
-#define TI_UART_DISABLE_RTS 0x0002
-#define TI_UART_ENABLE_PARITY_CHECKING 0x0008
-#define TI_UART_ENABLE_DSR_OUT 0x0010
-#define TI_UART_ENABLE_CTS_OUT 0x0020
-#define TI_UART_ENABLE_X_OUT 0x0040
-#define TI_UART_ENABLE_XA_OUT 0x0080
-#define TI_UART_ENABLE_X_IN 0x0100
-#define TI_UART_ENABLE_DTR_IN 0x0800
-#define TI_UART_DISABLE_DTR 0x1000
-#define TI_UART_ENABLE_MS_INTS 0x2000
-#define TI_UART_ENABLE_AUTO_START_DMA 0x4000
-
-/* Parity */
-#define TI_UART_NO_PARITY 0x00
-#define TI_UART_ODD_PARITY 0x01
-#define TI_UART_EVEN_PARITY 0x02
-#define TI_UART_MARK_PARITY 0x03
-#define TI_UART_SPACE_PARITY 0x04
-
-/* Stop bits */
-#define TI_UART_1_STOP_BITS 0x00
-#define TI_UART_1_5_STOP_BITS 0x01
-#define TI_UART_2_STOP_BITS 0x02
-
-/* Bits per character */
-#define TI_UART_5_DATA_BITS 0x00
-#define TI_UART_6_DATA_BITS 0x01
-#define TI_UART_7_DATA_BITS 0x02
-#define TI_UART_8_DATA_BITS 0x03
-
-/* 232/485 modes */
-#define TI_UART_232 0x00
-#define TI_UART_485_RECEIVER_DISABLED 0x01
-#define TI_UART_485_RECEIVER_ENABLED 0x02
-
-/* Pipe transfer mode and timeout */
-#define TI_PIPE_MODE_CONTINOUS 0x01
-#define TI_PIPE_MODE_MASK 0x03
-#define TI_PIPE_TIMEOUT_MASK 0x7C
-#define TI_PIPE_TIMEOUT_ENABLE 0x80
-
-/* Config struct */
-struct ti_uart_config {
- __u16 wBaudRate;
- __u16 wFlags;
- __u8 bDataBits;
- __u8 bParity;
- __u8 bStopBits;
- char cXon;
- char cXoff;
- __u8 bUartMode;
-} __attribute__((packed));
-
-/* Get port status */
-struct ti_port_status {
- __u8 bCmdCode;
- __u8 bModuleId;
- __u8 bErrorCode;
- __u8 bMSR;
- __u8 bLSR;
-} __attribute__((packed));
-
-/* Purge modes */
-#define TI_PURGE_OUTPUT 0x00
-#define TI_PURGE_INPUT 0x80
-
-/* Read/Write data */
-#define TI_RW_DATA_ADDR_SFR 0x10
-#define TI_RW_DATA_ADDR_IDATA 0x20
-#define TI_RW_DATA_ADDR_XDATA 0x30
-#define TI_RW_DATA_ADDR_CODE 0x40
-#define TI_RW_DATA_ADDR_GPIO 0x50
-#define TI_RW_DATA_ADDR_I2C 0x60
-#define TI_RW_DATA_ADDR_FLASH 0x70
-#define TI_RW_DATA_ADDR_DSP 0x80
-
-#define TI_RW_DATA_UNSPECIFIED 0x00
-#define TI_RW_DATA_BYTE 0x01
-#define TI_RW_DATA_WORD 0x02
-#define TI_RW_DATA_DOUBLE_WORD 0x04
-
-struct ti_write_data_bytes {
- __u8 bAddrType;
- __u8 bDataType;
- __u8 bDataCounter;
- __be16 wBaseAddrHi;
- __be16 wBaseAddrLo;
- __u8 bData[0];
-} __attribute__((packed));
-
-struct ti_read_data_request {
- __u8 bAddrType;
- __u8 bDataType;
- __u8 bDataCounter;
- __be16 wBaseAddrHi;
- __be16 wBaseAddrLo;
-} __attribute__((packed));
-
-struct ti_read_data_bytes {
- __u8 bCmdCode;
- __u8 bModuleId;
- __u8 bErrorCode;
- __u8 bData[0];
-} __attribute__((packed));
-
-/* Interrupt struct */
-struct ti_interrupt {
- __u8 bICode;
- __u8 bIInfo;
-} __attribute__((packed));
-
-/* Interrupt codes */
-#define TI_GET_PORT_FROM_CODE(c) (((c) >> 4) - 3)
-#define TI_GET_FUNC_FROM_CODE(c) ((c) & 0x0f)
-#define TI_CODE_HARDWARE_ERROR 0xFF
-#define TI_CODE_DATA_ERROR 0x03
-#define TI_CODE_MODEM_STATUS 0x04
-
-/* Download firmware max packet size */
-#define TI_DOWNLOAD_MAX_PACKET_SIZE 64
-
-/* Firmware image header */
-struct ti_firmware_header {
- __le16 wLength;
- __u8 bCheckSum;
-} __attribute__((packed));
-
-/* UART addresses */
-#define TI_UART1_BASE_ADDR 0xFFA0 /* UART 1 base address */
-#define TI_UART2_BASE_ADDR 0xFFB0 /* UART 2 base address */
-#define TI_UART_OFFSET_LCR 0x0002 /* UART MCR register offset */
-#define TI_UART_OFFSET_MCR 0x0004 /* UART MCR register offset */
-
-#endif /* _TI_3410_5052_H_ */
diff --git a/drivers/vfio/pci/vfio_pci_intrs.c b/drivers/vfio/pci/vfio_pci_intrs.c
index 15ecfc9c5f6c..152b43822ef1 100644
--- a/drivers/vfio/pci/vfio_pci_intrs.c
+++ b/drivers/vfio/pci/vfio_pci_intrs.c
@@ -564,67 +564,80 @@ static int vfio_pci_set_msi_trigger(struct vfio_pci_device *vdev,
}
static int vfio_pci_set_ctx_trigger_single(struct eventfd_ctx **ctx,
- uint32_t flags, void *data)
+ unsigned int count, uint32_t flags,
+ void *data)
{
- int32_t fd = *(int32_t *)data;
-
- if (!(flags & VFIO_IRQ_SET_DATA_TYPE_MASK))
- return -EINVAL;
-
/* DATA_NONE/DATA_BOOL enables loopback testing */
if (flags & VFIO_IRQ_SET_DATA_NONE) {
- if (*ctx)
- eventfd_signal(*ctx, 1);
- return 0;
+ if (*ctx) {
+ if (count) {
+ eventfd_signal(*ctx, 1);
+ } else {
+ eventfd_ctx_put(*ctx);
+ *ctx = NULL;
+ }
+ return 0;
+ }
} else if (flags & VFIO_IRQ_SET_DATA_BOOL) {
- uint8_t trigger = *(uint8_t *)data;
+ uint8_t trigger;
+
+ if (!count)
+ return -EINVAL;
+
+ trigger = *(uint8_t *)data;
if (trigger && *ctx)
eventfd_signal(*ctx, 1);
- return 0;
- }
- /* Handle SET_DATA_EVENTFD */
- if (fd == -1) {
- if (*ctx)
- eventfd_ctx_put(*ctx);
- *ctx = NULL;
return 0;
- } else if (fd >= 0) {
- struct eventfd_ctx *efdctx;
- efdctx = eventfd_ctx_fdget(fd);
- if (IS_ERR(efdctx))
- return PTR_ERR(efdctx);
- if (*ctx)
- eventfd_ctx_put(*ctx);
- *ctx = efdctx;
+ } else if (flags & VFIO_IRQ_SET_DATA_EVENTFD) {
+ int32_t fd;
+
+ if (!count)
+ return -EINVAL;
+
+ fd = *(int32_t *)data;
+ if (fd == -1) {
+ if (*ctx)
+ eventfd_ctx_put(*ctx);
+ *ctx = NULL;
+ } else if (fd >= 0) {
+ struct eventfd_ctx *efdctx;
+
+ efdctx = eventfd_ctx_fdget(fd);
+ if (IS_ERR(efdctx))
+ return PTR_ERR(efdctx);
+
+ if (*ctx)
+ eventfd_ctx_put(*ctx);
+
+ *ctx = efdctx;
+ }
return 0;
- } else
- return -EINVAL;
+ }
+
+ return -EINVAL;
}
static int vfio_pci_set_err_trigger(struct vfio_pci_device *vdev,
unsigned index, unsigned start,
unsigned count, uint32_t flags, void *data)
{
- if (index != VFIO_PCI_ERR_IRQ_INDEX)
+ if (index != VFIO_PCI_ERR_IRQ_INDEX || start != 0 || count > 1)
return -EINVAL;
- /*
- * We should sanitize start & count, but that wasn't caught
- * originally, so this IRQ index must forever ignore them :-(
- */
-
- return vfio_pci_set_ctx_trigger_single(&vdev->err_trigger, flags, data);
+ return vfio_pci_set_ctx_trigger_single(&vdev->err_trigger,
+ count, flags, data);
}
static int vfio_pci_set_req_trigger(struct vfio_pci_device *vdev,
unsigned index, unsigned start,
unsigned count, uint32_t flags, void *data)
{
- if (index != VFIO_PCI_REQ_IRQ_INDEX || start != 0 || count != 1)
+ if (index != VFIO_PCI_REQ_IRQ_INDEX || start != 0 || count > 1)
return -EINVAL;
- return vfio_pci_set_ctx_trigger_single(&vdev->req_trigger, flags, data);
+ return vfio_pci_set_ctx_trigger_single(&vdev->req_trigger,
+ count, flags, data);
}
int vfio_pci_set_irqs_ioctl(struct vfio_pci_device *vdev, uint32_t flags,
diff --git a/drivers/vhost/Kconfig b/drivers/vhost/Kconfig
index 533eaf04f12f..40764ecad9ce 100644
--- a/drivers/vhost/Kconfig
+++ b/drivers/vhost/Kconfig
@@ -2,7 +2,6 @@ config VHOST_NET
tristate "Host kernel accelerator for virtio net"
depends on NET && EVENTFD && (TUN || !TUN) && (MACVTAP || !MACVTAP)
select VHOST
- select VHOST_RING
---help---
This kernel module can be loaded in host kernel to accelerate
guest networking with virtio_net. Not to be confused with virtio_net
@@ -15,17 +14,24 @@ config VHOST_SCSI
tristate "VHOST_SCSI TCM fabric driver"
depends on TARGET_CORE && EVENTFD && m
select VHOST
- select VHOST_RING
default n
---help---
Say M here to enable the vhost_scsi TCM fabric module
for use with virtio-scsi guests
-config VHOST_RING
- tristate
+config VHOST_VSOCK
+ tristate "vhost virtio-vsock driver"
+ depends on VSOCKETS && EVENTFD
+ select VIRTIO_VSOCKETS_COMMON
+ select VHOST
+ default n
---help---
- This option is selected by any driver which needs to access
- the host side of a virtio ring.
+ This kernel module can be loaded in the host kernel to provide AF_VSOCK
+ sockets for communicating with guests. The guests must have the
+ virtio_transport.ko driver loaded to use the virtio-vsock device.
+
+ To compile this driver as a module, choose M here: the module will be called
+ vhost_vsock.
config VHOST
tristate
diff --git a/drivers/vhost/Kconfig.vringh b/drivers/vhost/Kconfig.vringh
new file mode 100644
index 000000000000..6a4490c09d7f
--- /dev/null
+++ b/drivers/vhost/Kconfig.vringh
@@ -0,0 +1,5 @@
+config VHOST_RING
+ tristate
+ ---help---
+ This option is selected by any driver which needs to access
+ the host side of a virtio ring.
diff --git a/drivers/vhost/Makefile b/drivers/vhost/Makefile
index e0441c34db1c..6b012b986b57 100644
--- a/drivers/vhost/Makefile
+++ b/drivers/vhost/Makefile
@@ -4,5 +4,9 @@ vhost_net-y := net.o
obj-$(CONFIG_VHOST_SCSI) += vhost_scsi.o
vhost_scsi-y := scsi.o
+obj-$(CONFIG_VHOST_VSOCK) += vhost_vsock.o
+vhost_vsock-y := vsock.o
+
obj-$(CONFIG_VHOST_RING) += vringh.o
+
obj-$(CONFIG_VHOST) += vhost.o
diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c
index e032ca397371..5dc128a8da83 100644
--- a/drivers/vhost/net.c
+++ b/drivers/vhost/net.c
@@ -61,7 +61,8 @@ MODULE_PARM_DESC(experimental_zcopytx, "Enable Zero Copy TX;"
enum {
VHOST_NET_FEATURES = VHOST_FEATURES |
(1ULL << VHOST_NET_F_VIRTIO_NET_HDR) |
- (1ULL << VIRTIO_NET_F_MRG_RXBUF)
+ (1ULL << VIRTIO_NET_F_MRG_RXBUF) |
+ (1ULL << VIRTIO_F_IOMMU_PLATFORM)
};
enum {
@@ -334,7 +335,7 @@ static int vhost_net_tx_get_vq_desc(struct vhost_net *net,
{
unsigned long uninitialized_var(endtime);
int r = vhost_get_vq_desc(vq, vq->iov, ARRAY_SIZE(vq->iov),
- out_num, in_num, NULL, NULL);
+ out_num, in_num, NULL, NULL);
if (r == vq->num && vq->busyloop_timeout) {
preempt_disable();
@@ -344,7 +345,7 @@ static int vhost_net_tx_get_vq_desc(struct vhost_net *net,
cpu_relax_lowlatency();
preempt_enable();
r = vhost_get_vq_desc(vq, vq->iov, ARRAY_SIZE(vq->iov),
- out_num, in_num, NULL, NULL);
+ out_num, in_num, NULL, NULL);
}
return r;
@@ -377,6 +378,9 @@ static void handle_tx(struct vhost_net *net)
if (!sock)
goto out;
+ if (!vq_iotlb_prefetch(vq))
+ goto out;
+
vhost_disable_notify(&net->dev, vq);
hdr_size = nvq->vhost_hlen;
@@ -652,6 +656,10 @@ static void handle_rx(struct vhost_net *net)
sock = vq->private_data;
if (!sock)
goto out;
+
+ if (!vq_iotlb_prefetch(vq))
+ goto out;
+
vhost_disable_notify(&net->dev, vq);
vhost_net_disable_vq(net, vq);
@@ -1052,20 +1060,20 @@ static long vhost_net_reset_owner(struct vhost_net *n)
struct socket *tx_sock = NULL;
struct socket *rx_sock = NULL;
long err;
- struct vhost_memory *memory;
+ struct vhost_umem *umem;
mutex_lock(&n->dev.mutex);
err = vhost_dev_check_owner(&n->dev);
if (err)
goto done;
- memory = vhost_dev_reset_owner_prepare();
- if (!memory) {
+ umem = vhost_dev_reset_owner_prepare();
+ if (!umem) {
err = -ENOMEM;
goto done;
}
vhost_net_stop(n, &tx_sock, &rx_sock);
vhost_net_flush(n);
- vhost_dev_reset_owner(&n->dev, memory);
+ vhost_dev_reset_owner(&n->dev, umem);
vhost_net_vq_reset(n);
done:
mutex_unlock(&n->dev.mutex);
@@ -1096,10 +1104,14 @@ static int vhost_net_set_features(struct vhost_net *n, u64 features)
}
mutex_lock(&n->dev.mutex);
if ((features & (1 << VHOST_F_LOG_ALL)) &&
- !vhost_log_access_ok(&n->dev)) {
- mutex_unlock(&n->dev.mutex);
- return -EFAULT;
+ !vhost_log_access_ok(&n->dev))
+ goto out_unlock;
+
+ if ((features & (1ULL << VIRTIO_F_IOMMU_PLATFORM))) {
+ if (vhost_init_device_iotlb(&n->dev, true))
+ goto out_unlock;
}
+
for (i = 0; i < VHOST_NET_VQ_MAX; ++i) {
mutex_lock(&n->vqs[i].vq.mutex);
n->vqs[i].vq.acked_features = features;
@@ -1109,6 +1121,10 @@ static int vhost_net_set_features(struct vhost_net *n, u64 features)
}
mutex_unlock(&n->dev.mutex);
return 0;
+
+out_unlock:
+ mutex_unlock(&n->dev.mutex);
+ return -EFAULT;
}
static long vhost_net_set_owner(struct vhost_net *n)
@@ -1182,9 +1198,40 @@ static long vhost_net_compat_ioctl(struct file *f, unsigned int ioctl,
}
#endif
+static ssize_t vhost_net_chr_read_iter(struct kiocb *iocb, struct iov_iter *to)
+{
+ struct file *file = iocb->ki_filp;
+ struct vhost_net *n = file->private_data;
+ struct vhost_dev *dev = &n->dev;
+ int noblock = file->f_flags & O_NONBLOCK;
+
+ return vhost_chr_read_iter(dev, to, noblock);
+}
+
+static ssize_t vhost_net_chr_write_iter(struct kiocb *iocb,
+ struct iov_iter *from)
+{
+ struct file *file = iocb->ki_filp;
+ struct vhost_net *n = file->private_data;
+ struct vhost_dev *dev = &n->dev;
+
+ return vhost_chr_write_iter(dev, from);
+}
+
+static unsigned int vhost_net_chr_poll(struct file *file, poll_table *wait)
+{
+ struct vhost_net *n = file->private_data;
+ struct vhost_dev *dev = &n->dev;
+
+ return vhost_chr_poll(file, dev, wait);
+}
+
static const struct file_operations vhost_net_fops = {
.owner = THIS_MODULE,
.release = vhost_net_release,
+ .read_iter = vhost_net_chr_read_iter,
+ .write_iter = vhost_net_chr_write_iter,
+ .poll = vhost_net_chr_poll,
.unlocked_ioctl = vhost_net_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = vhost_net_compat_ioctl,
diff --git a/drivers/vhost/test.c b/drivers/vhost/test.c
index 388eec4e1a90..97fb2f8fa930 100644
--- a/drivers/vhost/test.c
+++ b/drivers/vhost/test.c
@@ -220,20 +220,20 @@ static long vhost_test_reset_owner(struct vhost_test *n)
{
void *priv = NULL;
long err;
- struct vhost_memory *memory;
+ struct vhost_umem *umem;
mutex_lock(&n->dev.mutex);
err = vhost_dev_check_owner(&n->dev);
if (err)
goto done;
- memory = vhost_dev_reset_owner_prepare();
- if (!memory) {
+ umem = vhost_dev_reset_owner_prepare();
+ if (!umem) {
err = -ENOMEM;
goto done;
}
vhost_test_stop(n, &priv);
vhost_test_flush(n);
- vhost_dev_reset_owner(&n->dev, memory);
+ vhost_dev_reset_owner(&n->dev, umem);
done:
mutex_unlock(&n->dev.mutex);
return err;
diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index 669fef1e2bb6..c6f2d89c0e97 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -27,6 +27,7 @@
#include <linux/cgroup.h>
#include <linux/module.h>
#include <linux/sort.h>
+#include <linux/interval_tree_generic.h>
#include "vhost.h"
@@ -34,6 +35,10 @@ static ushort max_mem_regions = 64;
module_param(max_mem_regions, ushort, 0444);
MODULE_PARM_DESC(max_mem_regions,
"Maximum number of memory regions in memory map. (default: 64)");
+static int max_iotlb_entries = 2048;
+module_param(max_iotlb_entries, int, 0444);
+MODULE_PARM_DESC(max_iotlb_entries,
+ "Maximum number of iotlb entries. (default: 2048)");
enum {
VHOST_MEMORY_F_LOG = 0x1,
@@ -42,6 +47,10 @@ enum {
#define vhost_used_event(vq) ((__virtio16 __user *)&vq->avail->ring[vq->num])
#define vhost_avail_event(vq) ((__virtio16 __user *)&vq->used->ring[vq->num])
+INTERVAL_TREE_DEFINE(struct vhost_umem_node,
+ rb, __u64, __subtree_last,
+ START, LAST, , vhost_umem_interval_tree);
+
#ifdef CONFIG_VHOST_CROSS_ENDIAN_LEGACY
static void vhost_disable_cross_endian(struct vhost_virtqueue *vq)
{
@@ -131,6 +140,19 @@ static void vhost_reset_is_le(struct vhost_virtqueue *vq)
vq->is_le = virtio_legacy_is_little_endian();
}
+struct vhost_flush_struct {
+ struct vhost_work work;
+ struct completion wait_event;
+};
+
+static void vhost_flush_work(struct vhost_work *work)
+{
+ struct vhost_flush_struct *s;
+
+ s = container_of(work, struct vhost_flush_struct, work);
+ complete(&s->wait_event);
+}
+
static void vhost_poll_func(struct file *file, wait_queue_head_t *wqh,
poll_table *pt)
{
@@ -155,11 +177,9 @@ static int vhost_poll_wakeup(wait_queue_t *wait, unsigned mode, int sync,
void vhost_work_init(struct vhost_work *work, vhost_work_fn_t fn)
{
- INIT_LIST_HEAD(&work->node);
+ clear_bit(VHOST_WORK_QUEUED, &work->flags);
work->fn = fn;
init_waitqueue_head(&work->done);
- work->flushing = 0;
- work->queue_seq = work->done_seq = 0;
}
EXPORT_SYMBOL_GPL(vhost_work_init);
@@ -211,31 +231,17 @@ void vhost_poll_stop(struct vhost_poll *poll)
}
EXPORT_SYMBOL_GPL(vhost_poll_stop);
-static bool vhost_work_seq_done(struct vhost_dev *dev, struct vhost_work *work,
- unsigned seq)
-{
- int left;
-
- spin_lock_irq(&dev->work_lock);
- left = seq - work->done_seq;
- spin_unlock_irq(&dev->work_lock);
- return left <= 0;
-}
-
void vhost_work_flush(struct vhost_dev *dev, struct vhost_work *work)
{
- unsigned seq;
- int flushing;
+ struct vhost_flush_struct flush;
- spin_lock_irq(&dev->work_lock);
- seq = work->queue_seq;
- work->flushing++;
- spin_unlock_irq(&dev->work_lock);
- wait_event(work->done, vhost_work_seq_done(dev, work, seq));
- spin_lock_irq(&dev->work_lock);
- flushing = --work->flushing;
- spin_unlock_irq(&dev->work_lock);
- BUG_ON(flushing < 0);
+ if (dev->worker) {
+ init_completion(&flush.wait_event);
+ vhost_work_init(&flush.work, vhost_flush_work);
+
+ vhost_work_queue(dev, &flush.work);
+ wait_for_completion(&flush.wait_event);
+ }
}
EXPORT_SYMBOL_GPL(vhost_work_flush);
@@ -249,16 +255,16 @@ EXPORT_SYMBOL_GPL(vhost_poll_flush);
void vhost_work_queue(struct vhost_dev *dev, struct vhost_work *work)
{
- unsigned long flags;
+ if (!dev->worker)
+ return;
- spin_lock_irqsave(&dev->work_lock, flags);
- if (list_empty(&work->node)) {
- list_add_tail(&work->node, &dev->work_list);
- work->queue_seq++;
- spin_unlock_irqrestore(&dev->work_lock, flags);
+ if (!test_and_set_bit(VHOST_WORK_QUEUED, &work->flags)) {
+ /* We can only add the work to the list after we're
+ * sure it was not in the list.
+ */
+ smp_mb();
+ llist_add(&work->node, &dev->work_list);
wake_up_process(dev->worker);
- } else {
- spin_unlock_irqrestore(&dev->work_lock, flags);
}
}
EXPORT_SYMBOL_GPL(vhost_work_queue);
@@ -266,7 +272,7 @@ EXPORT_SYMBOL_GPL(vhost_work_queue);
/* A lockless hint for busy polling code to exit the loop */
bool vhost_has_work(struct vhost_dev *dev)
{
- return !list_empty(&dev->work_list);
+ return !llist_empty(&dev->work_list);
}
EXPORT_SYMBOL_GPL(vhost_has_work);
@@ -300,17 +306,18 @@ static void vhost_vq_reset(struct vhost_dev *dev,
vq->call_ctx = NULL;
vq->call = NULL;
vq->log_ctx = NULL;
- vq->memory = NULL;
vhost_reset_is_le(vq);
vhost_disable_cross_endian(vq);
vq->busyloop_timeout = 0;
+ vq->umem = NULL;
+ vq->iotlb = NULL;
}
static int vhost_worker(void *data)
{
struct vhost_dev *dev = data;
- struct vhost_work *work = NULL;
- unsigned uninitialized_var(seq);
+ struct vhost_work *work, *work_next;
+ struct llist_node *node;
mm_segment_t oldfs = get_fs();
set_fs(USER_DS);
@@ -320,35 +327,25 @@ static int vhost_worker(void *data)
/* mb paired w/ kthread_stop */
set_current_state(TASK_INTERRUPTIBLE);
- spin_lock_irq(&dev->work_lock);
- if (work) {
- work->done_seq = seq;
- if (work->flushing)
- wake_up_all(&work->done);
- }
-
if (kthread_should_stop()) {
- spin_unlock_irq(&dev->work_lock);
__set_current_state(TASK_RUNNING);
break;
}
- if (!list_empty(&dev->work_list)) {
- work = list_first_entry(&dev->work_list,
- struct vhost_work, node);
- list_del_init(&work->node);
- seq = work->queue_seq;
- } else
- work = NULL;
- spin_unlock_irq(&dev->work_lock);
- if (work) {
+ node = llist_del_all(&dev->work_list);
+ if (!node)
+ schedule();
+
+ node = llist_reverse_order(node);
+ /* make sure flag is seen after deletion */
+ smp_wmb();
+ llist_for_each_entry_safe(work, work_next, node, node) {
+ clear_bit(VHOST_WORK_QUEUED, &work->flags);
__set_current_state(TASK_RUNNING);
work->fn(work);
if (need_resched())
schedule();
- } else
- schedule();
-
+ }
}
unuse_mm(dev->mm);
set_fs(oldfs);
@@ -407,11 +404,16 @@ void vhost_dev_init(struct vhost_dev *dev,
mutex_init(&dev->mutex);
dev->log_ctx = NULL;
dev->log_file = NULL;
- dev->memory = NULL;
+ dev->umem = NULL;
+ dev->iotlb = NULL;
dev->mm = NULL;
- spin_lock_init(&dev->work_lock);
- INIT_LIST_HEAD(&dev->work_list);
dev->worker = NULL;
+ init_llist_head(&dev->work_list);
+ init_waitqueue_head(&dev->wait);
+ INIT_LIST_HEAD(&dev->read_list);
+ INIT_LIST_HEAD(&dev->pending_list);
+ spin_lock_init(&dev->iotlb_lock);
+
for (i = 0; i < dev->nvqs; ++i) {
vq = dev->vqs[i];
@@ -512,27 +514,36 @@ err_mm:
}
EXPORT_SYMBOL_GPL(vhost_dev_set_owner);
-struct vhost_memory *vhost_dev_reset_owner_prepare(void)
+static void *vhost_kvzalloc(unsigned long size)
{
- return kmalloc(offsetof(struct vhost_memory, regions), GFP_KERNEL);
+ void *n = kzalloc(size, GFP_KERNEL | __GFP_NOWARN | __GFP_REPEAT);
+
+ if (!n)
+ n = vzalloc(size);
+ return n;
+}
+
+struct vhost_umem *vhost_dev_reset_owner_prepare(void)
+{
+ return vhost_kvzalloc(sizeof(struct vhost_umem));
}
EXPORT_SYMBOL_GPL(vhost_dev_reset_owner_prepare);
/* Caller should have device mutex */
-void vhost_dev_reset_owner(struct vhost_dev *dev, struct vhost_memory *memory)
+void vhost_dev_reset_owner(struct vhost_dev *dev, struct vhost_umem *umem)
{
int i;
vhost_dev_cleanup(dev, true);
/* Restore memory to default empty mapping. */
- memory->nregions = 0;
- dev->memory = memory;
+ INIT_LIST_HEAD(&umem->umem_list);
+ dev->umem = umem;
/* We don't need VQ locks below since vhost_dev_cleanup makes sure
* VQs aren't running.
*/
for (i = 0; i < dev->nvqs; ++i)
- dev->vqs[i]->memory = memory;
+ dev->vqs[i]->umem = umem;
}
EXPORT_SYMBOL_GPL(vhost_dev_reset_owner);
@@ -549,6 +560,47 @@ void vhost_dev_stop(struct vhost_dev *dev)
}
EXPORT_SYMBOL_GPL(vhost_dev_stop);
+static void vhost_umem_free(struct vhost_umem *umem,
+ struct vhost_umem_node *node)
+{
+ vhost_umem_interval_tree_remove(node, &umem->umem_tree);
+ list_del(&node->link);
+ kfree(node);
+ umem->numem--;
+}
+
+static void vhost_umem_clean(struct vhost_umem *umem)
+{
+ struct vhost_umem_node *node, *tmp;
+
+ if (!umem)
+ return;
+
+ list_for_each_entry_safe(node, tmp, &umem->umem_list, link)
+ vhost_umem_free(umem, node);
+
+ kvfree(umem);
+}
+
+static void vhost_clear_msg(struct vhost_dev *dev)
+{
+ struct vhost_msg_node *node, *n;
+
+ spin_lock(&dev->iotlb_lock);
+
+ list_for_each_entry_safe(node, n, &dev->read_list, node) {
+ list_del(&node->node);
+ kfree(node);
+ }
+
+ list_for_each_entry_safe(node, n, &dev->pending_list, node) {
+ list_del(&node->node);
+ kfree(node);
+ }
+
+ spin_unlock(&dev->iotlb_lock);
+}
+
/* Caller should have device mutex if and only if locked is set */
void vhost_dev_cleanup(struct vhost_dev *dev, bool locked)
{
@@ -575,9 +627,13 @@ void vhost_dev_cleanup(struct vhost_dev *dev, bool locked)
fput(dev->log_file);
dev->log_file = NULL;
/* No one will access memory at this point */
- kvfree(dev->memory);
- dev->memory = NULL;
- WARN_ON(!list_empty(&dev->work_list));
+ vhost_umem_clean(dev->umem);
+ dev->umem = NULL;
+ vhost_umem_clean(dev->iotlb);
+ dev->iotlb = NULL;
+ vhost_clear_msg(dev);
+ wake_up_interruptible_poll(&dev->wait, POLLIN | POLLRDNORM);
+ WARN_ON(!llist_empty(&dev->work_list));
if (dev->worker) {
kthread_stop(dev->worker);
dev->worker = NULL;
@@ -601,26 +657,34 @@ static int log_access_ok(void __user *log_base, u64 addr, unsigned long sz)
(sz + VHOST_PAGE_SIZE * 8 - 1) / VHOST_PAGE_SIZE / 8);
}
+static bool vhost_overflow(u64 uaddr, u64 size)
+{
+ /* Make sure 64 bit math will not overflow. */
+ return uaddr > ULONG_MAX || size > ULONG_MAX || uaddr > ULONG_MAX - size;
+}
+
/* Caller should have vq mutex and device mutex. */
-static int vq_memory_access_ok(void __user *log_base, struct vhost_memory *mem,
+static int vq_memory_access_ok(void __user *log_base, struct vhost_umem *umem,
int log_all)
{
- int i;
+ struct vhost_umem_node *node;
- if (!mem)
+ if (!umem)
return 0;
- for (i = 0; i < mem->nregions; ++i) {
- struct vhost_memory_region *m = mem->regions + i;
- unsigned long a = m->userspace_addr;
- if (m->memory_size > ULONG_MAX)
+ list_for_each_entry(node, &umem->umem_list, link) {
+ unsigned long a = node->userspace_addr;
+
+ if (vhost_overflow(node->userspace_addr, node->size))
return 0;
- else if (!access_ok(VERIFY_WRITE, (void __user *)a,
- m->memory_size))
+
+
+ if (!access_ok(VERIFY_WRITE, (void __user *)a,
+ node->size))
return 0;
else if (log_all && !log_access_ok(log_base,
- m->guest_phys_addr,
- m->memory_size))
+ node->start,
+ node->size))
return 0;
}
return 1;
@@ -628,7 +692,7 @@ static int vq_memory_access_ok(void __user *log_base, struct vhost_memory *mem,
/* Can we switch to this memory table? */
/* Caller should have device mutex but not vq mutex */
-static int memory_access_ok(struct vhost_dev *d, struct vhost_memory *mem,
+static int memory_access_ok(struct vhost_dev *d, struct vhost_umem *umem,
int log_all)
{
int i;
@@ -641,7 +705,8 @@ static int memory_access_ok(struct vhost_dev *d, struct vhost_memory *mem,
log = log_all || vhost_has_feature(d->vqs[i], VHOST_F_LOG_ALL);
/* If ring is inactive, will check when it's enabled. */
if (d->vqs[i]->private_data)
- ok = vq_memory_access_ok(d->vqs[i]->log_base, mem, log);
+ ok = vq_memory_access_ok(d->vqs[i]->log_base,
+ umem, log);
else
ok = 1;
mutex_unlock(&d->vqs[i]->mutex);
@@ -651,12 +716,385 @@ static int memory_access_ok(struct vhost_dev *d, struct vhost_memory *mem,
return 1;
}
+static int translate_desc(struct vhost_virtqueue *vq, u64 addr, u32 len,
+ struct iovec iov[], int iov_size, int access);
+
+static int vhost_copy_to_user(struct vhost_virtqueue *vq, void *to,
+ const void *from, unsigned size)
+{
+ int ret;
+
+ if (!vq->iotlb)
+ return __copy_to_user(to, from, size);
+ else {
+ /* This function should be called after iotlb
+ * prefetch, which means we're sure that all vq
+ * could be access through iotlb. So -EAGAIN should
+ * not happen in this case.
+ */
+ /* TODO: more fast path */
+ struct iov_iter t;
+ ret = translate_desc(vq, (u64)(uintptr_t)to, size, vq->iotlb_iov,
+ ARRAY_SIZE(vq->iotlb_iov),
+ VHOST_ACCESS_WO);
+ if (ret < 0)
+ goto out;
+ iov_iter_init(&t, WRITE, vq->iotlb_iov, ret, size);
+ ret = copy_to_iter(from, size, &t);
+ if (ret == size)
+ ret = 0;
+ }
+out:
+ return ret;
+}
+
+static int vhost_copy_from_user(struct vhost_virtqueue *vq, void *to,
+ void *from, unsigned size)
+{
+ int ret;
+
+ if (!vq->iotlb)
+ return __copy_from_user(to, from, size);
+ else {
+ /* This function should be called after iotlb
+ * prefetch, which means we're sure that vq
+ * could be access through iotlb. So -EAGAIN should
+ * not happen in this case.
+ */
+ /* TODO: more fast path */
+ struct iov_iter f;
+ ret = translate_desc(vq, (u64)(uintptr_t)from, size, vq->iotlb_iov,
+ ARRAY_SIZE(vq->iotlb_iov),
+ VHOST_ACCESS_RO);
+ if (ret < 0) {
+ vq_err(vq, "IOTLB translation failure: uaddr "
+ "%p size 0x%llx\n", from,
+ (unsigned long long) size);
+ goto out;
+ }
+ iov_iter_init(&f, READ, vq->iotlb_iov, ret, size);
+ ret = copy_from_iter(to, size, &f);
+ if (ret == size)
+ ret = 0;
+ }
+
+out:
+ return ret;
+}
+
+static void __user *__vhost_get_user(struct vhost_virtqueue *vq,
+ void *addr, unsigned size)
+{
+ int ret;
+
+ /* This function should be called after iotlb
+ * prefetch, which means we're sure that vq
+ * could be access through iotlb. So -EAGAIN should
+ * not happen in this case.
+ */
+ /* TODO: more fast path */
+ ret = translate_desc(vq, (u64)(uintptr_t)addr, size, vq->iotlb_iov,
+ ARRAY_SIZE(vq->iotlb_iov),
+ VHOST_ACCESS_RO);
+ if (ret < 0) {
+ vq_err(vq, "IOTLB translation failure: uaddr "
+ "%p size 0x%llx\n", addr,
+ (unsigned long long) size);
+ return NULL;
+ }
+
+ if (ret != 1 || vq->iotlb_iov[0].iov_len != size) {
+ vq_err(vq, "Non atomic userspace memory access: uaddr "
+ "%p size 0x%llx\n", addr,
+ (unsigned long long) size);
+ return NULL;
+ }
+
+ return vq->iotlb_iov[0].iov_base;
+}
+
+#define vhost_put_user(vq, x, ptr) \
+({ \
+ int ret = -EFAULT; \
+ if (!vq->iotlb) { \
+ ret = __put_user(x, ptr); \
+ } else { \
+ __typeof__(ptr) to = \
+ (__typeof__(ptr)) __vhost_get_user(vq, ptr, sizeof(*ptr)); \
+ if (to != NULL) \
+ ret = __put_user(x, to); \
+ else \
+ ret = -EFAULT; \
+ } \
+ ret; \
+})
+
+#define vhost_get_user(vq, x, ptr) \
+({ \
+ int ret; \
+ if (!vq->iotlb) { \
+ ret = __get_user(x, ptr); \
+ } else { \
+ __typeof__(ptr) from = \
+ (__typeof__(ptr)) __vhost_get_user(vq, ptr, sizeof(*ptr)); \
+ if (from != NULL) \
+ ret = __get_user(x, from); \
+ else \
+ ret = -EFAULT; \
+ } \
+ ret; \
+})
+
+static void vhost_dev_lock_vqs(struct vhost_dev *d)
+{
+ int i = 0;
+ for (i = 0; i < d->nvqs; ++i)
+ mutex_lock(&d->vqs[i]->mutex);
+}
+
+static void vhost_dev_unlock_vqs(struct vhost_dev *d)
+{
+ int i = 0;
+ for (i = 0; i < d->nvqs; ++i)
+ mutex_unlock(&d->vqs[i]->mutex);
+}
+
+static int vhost_new_umem_range(struct vhost_umem *umem,
+ u64 start, u64 size, u64 end,
+ u64 userspace_addr, int perm)
+{
+ struct vhost_umem_node *tmp, *node = kmalloc(sizeof(*node), GFP_ATOMIC);
+
+ if (!node)
+ return -ENOMEM;
+
+ if (umem->numem == max_iotlb_entries) {
+ tmp = list_first_entry(&umem->umem_list, typeof(*tmp), link);
+ vhost_umem_free(umem, tmp);
+ }
+
+ node->start = start;
+ node->size = size;
+ node->last = end;
+ node->userspace_addr = userspace_addr;
+ node->perm = perm;
+ INIT_LIST_HEAD(&node->link);
+ list_add_tail(&node->link, &umem->umem_list);
+ vhost_umem_interval_tree_insert(node, &umem->umem_tree);
+ umem->numem++;
+
+ return 0;
+}
+
+static void vhost_del_umem_range(struct vhost_umem *umem,
+ u64 start, u64 end)
+{
+ struct vhost_umem_node *node;
+
+ while ((node = vhost_umem_interval_tree_iter_first(&umem->umem_tree,
+ start, end)))
+ vhost_umem_free(umem, node);
+}
+
+static void vhost_iotlb_notify_vq(struct vhost_dev *d,
+ struct vhost_iotlb_msg *msg)
+{
+ struct vhost_msg_node *node, *n;
+
+ spin_lock(&d->iotlb_lock);
+
+ list_for_each_entry_safe(node, n, &d->pending_list, node) {
+ struct vhost_iotlb_msg *vq_msg = &node->msg.iotlb;
+ if (msg->iova <= vq_msg->iova &&
+ msg->iova + msg->size - 1 > vq_msg->iova &&
+ vq_msg->type == VHOST_IOTLB_MISS) {
+ vhost_poll_queue(&node->vq->poll);
+ list_del(&node->node);
+ kfree(node);
+ }
+ }
+
+ spin_unlock(&d->iotlb_lock);
+}
+
+static int umem_access_ok(u64 uaddr, u64 size, int access)
+{
+ unsigned long a = uaddr;
+
+ /* Make sure 64 bit math will not overflow. */
+ if (vhost_overflow(uaddr, size))
+ return -EFAULT;
+
+ if ((access & VHOST_ACCESS_RO) &&
+ !access_ok(VERIFY_READ, (void __user *)a, size))
+ return -EFAULT;
+ if ((access & VHOST_ACCESS_WO) &&
+ !access_ok(VERIFY_WRITE, (void __user *)a, size))
+ return -EFAULT;
+ return 0;
+}
+
+int vhost_process_iotlb_msg(struct vhost_dev *dev,
+ struct vhost_iotlb_msg *msg)
+{
+ int ret = 0;
+
+ vhost_dev_lock_vqs(dev);
+ switch (msg->type) {
+ case VHOST_IOTLB_UPDATE:
+ if (!dev->iotlb) {
+ ret = -EFAULT;
+ break;
+ }
+ if (umem_access_ok(msg->uaddr, msg->size, msg->perm)) {
+ ret = -EFAULT;
+ break;
+ }
+ if (vhost_new_umem_range(dev->iotlb, msg->iova, msg->size,
+ msg->iova + msg->size - 1,
+ msg->uaddr, msg->perm)) {
+ ret = -ENOMEM;
+ break;
+ }
+ vhost_iotlb_notify_vq(dev, msg);
+ break;
+ case VHOST_IOTLB_INVALIDATE:
+ vhost_del_umem_range(dev->iotlb, msg->iova,
+ msg->iova + msg->size - 1);
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ vhost_dev_unlock_vqs(dev);
+ return ret;
+}
+ssize_t vhost_chr_write_iter(struct vhost_dev *dev,
+ struct iov_iter *from)
+{
+ struct vhost_msg_node node;
+ unsigned size = sizeof(struct vhost_msg);
+ size_t ret;
+ int err;
+
+ if (iov_iter_count(from) < size)
+ return 0;
+ ret = copy_from_iter(&node.msg, size, from);
+ if (ret != size)
+ goto done;
+
+ switch (node.msg.type) {
+ case VHOST_IOTLB_MSG:
+ err = vhost_process_iotlb_msg(dev, &node.msg.iotlb);
+ if (err)
+ ret = err;
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+done:
+ return ret;
+}
+EXPORT_SYMBOL(vhost_chr_write_iter);
+
+unsigned int vhost_chr_poll(struct file *file, struct vhost_dev *dev,
+ poll_table *wait)
+{
+ unsigned int mask = 0;
+
+ poll_wait(file, &dev->wait, wait);
+
+ if (!list_empty(&dev->read_list))
+ mask |= POLLIN | POLLRDNORM;
+
+ return mask;
+}
+EXPORT_SYMBOL(vhost_chr_poll);
+
+ssize_t vhost_chr_read_iter(struct vhost_dev *dev, struct iov_iter *to,
+ int noblock)
+{
+ DEFINE_WAIT(wait);
+ struct vhost_msg_node *node;
+ ssize_t ret = 0;
+ unsigned size = sizeof(struct vhost_msg);
+
+ if (iov_iter_count(to) < size)
+ return 0;
+
+ while (1) {
+ if (!noblock)
+ prepare_to_wait(&dev->wait, &wait,
+ TASK_INTERRUPTIBLE);
+
+ node = vhost_dequeue_msg(dev, &dev->read_list);
+ if (node)
+ break;
+ if (noblock) {
+ ret = -EAGAIN;
+ break;
+ }
+ if (signal_pending(current)) {
+ ret = -ERESTARTSYS;
+ break;
+ }
+ if (!dev->iotlb) {
+ ret = -EBADFD;
+ break;
+ }
+
+ schedule();
+ }
+
+ if (!noblock)
+ finish_wait(&dev->wait, &wait);
+
+ if (node) {
+ ret = copy_to_iter(&node->msg, size, to);
+
+ if (ret != size || node->msg.type != VHOST_IOTLB_MISS) {
+ kfree(node);
+ return ret;
+ }
+
+ vhost_enqueue_msg(dev, &dev->pending_list, node);
+ }
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(vhost_chr_read_iter);
+
+static int vhost_iotlb_miss(struct vhost_virtqueue *vq, u64 iova, int access)
+{
+ struct vhost_dev *dev = vq->dev;
+ struct vhost_msg_node *node;
+ struct vhost_iotlb_msg *msg;
+
+ node = vhost_new_msg(vq, VHOST_IOTLB_MISS);
+ if (!node)
+ return -ENOMEM;
+
+ msg = &node->msg.iotlb;
+ msg->type = VHOST_IOTLB_MISS;
+ msg->iova = iova;
+ msg->perm = access;
+
+ vhost_enqueue_msg(dev, &dev->read_list, node);
+
+ return 0;
+}
+
static int vq_access_ok(struct vhost_virtqueue *vq, unsigned int num,
struct vring_desc __user *desc,
struct vring_avail __user *avail,
struct vring_used __user *used)
+
{
size_t s = vhost_has_feature(vq, VIRTIO_RING_F_EVENT_IDX) ? 2 : 0;
+
return access_ok(VERIFY_READ, desc, num * sizeof *desc) &&
access_ok(VERIFY_READ, avail,
sizeof *avail + num * sizeof *avail->ring + s) &&
@@ -664,11 +1102,59 @@ static int vq_access_ok(struct vhost_virtqueue *vq, unsigned int num,
sizeof *used + num * sizeof *used->ring + s);
}
+static int iotlb_access_ok(struct vhost_virtqueue *vq,
+ int access, u64 addr, u64 len)
+{
+ const struct vhost_umem_node *node;
+ struct vhost_umem *umem = vq->iotlb;
+ u64 s = 0, size;
+
+ while (len > s) {
+ node = vhost_umem_interval_tree_iter_first(&umem->umem_tree,
+ addr,
+ addr + len - 1);
+ if (node == NULL || node->start > addr) {
+ vhost_iotlb_miss(vq, addr, access);
+ return false;
+ } else if (!(node->perm & access)) {
+ /* Report the possible access violation by
+ * request another translation from userspace.
+ */
+ return false;
+ }
+
+ size = node->size - addr + node->start;
+ s += size;
+ addr += size;
+ }
+
+ return true;
+}
+
+int vq_iotlb_prefetch(struct vhost_virtqueue *vq)
+{
+ size_t s = vhost_has_feature(vq, VIRTIO_RING_F_EVENT_IDX) ? 2 : 0;
+ unsigned int num = vq->num;
+
+ if (!vq->iotlb)
+ return 1;
+
+ return iotlb_access_ok(vq, VHOST_ACCESS_RO, (u64)(uintptr_t)vq->desc,
+ num * sizeof *vq->desc) &&
+ iotlb_access_ok(vq, VHOST_ACCESS_RO, (u64)(uintptr_t)vq->avail,
+ sizeof *vq->avail +
+ num * sizeof *vq->avail->ring + s) &&
+ iotlb_access_ok(vq, VHOST_ACCESS_WO, (u64)(uintptr_t)vq->used,
+ sizeof *vq->used +
+ num * sizeof *vq->used->ring + s);
+}
+EXPORT_SYMBOL_GPL(vq_iotlb_prefetch);
+
/* Can we log writes? */
/* Caller should have device mutex but not vq mutex */
int vhost_log_access_ok(struct vhost_dev *dev)
{
- return memory_access_ok(dev, dev->memory, 1);
+ return memory_access_ok(dev, dev->umem, 1);
}
EXPORT_SYMBOL_GPL(vhost_log_access_ok);
@@ -679,7 +1165,7 @@ static int vq_log_access_ok(struct vhost_virtqueue *vq,
{
size_t s = vhost_has_feature(vq, VIRTIO_RING_F_EVENT_IDX) ? 2 : 0;
- return vq_memory_access_ok(log_base, vq->memory,
+ return vq_memory_access_ok(log_base, vq->umem,
vhost_has_feature(vq, VHOST_F_LOG_ALL)) &&
(!vq->log_used || log_access_ok(log_base, vq->log_addr,
sizeof *vq->used +
@@ -690,33 +1176,36 @@ static int vq_log_access_ok(struct vhost_virtqueue *vq,
/* Caller should have vq mutex and device mutex */
int vhost_vq_access_ok(struct vhost_virtqueue *vq)
{
+ if (vq->iotlb) {
+ /* When device IOTLB was used, the access validation
+ * will be validated during prefetching.
+ */
+ return 1;
+ }
return vq_access_ok(vq, vq->num, vq->desc, vq->avail, vq->used) &&
vq_log_access_ok(vq, vq->log_base);
}
EXPORT_SYMBOL_GPL(vhost_vq_access_ok);
-static int vhost_memory_reg_sort_cmp(const void *p1, const void *p2)
+static struct vhost_umem *vhost_umem_alloc(void)
{
- const struct vhost_memory_region *r1 = p1, *r2 = p2;
- if (r1->guest_phys_addr < r2->guest_phys_addr)
- return 1;
- if (r1->guest_phys_addr > r2->guest_phys_addr)
- return -1;
- return 0;
-}
+ struct vhost_umem *umem = vhost_kvzalloc(sizeof(*umem));
-static void *vhost_kvzalloc(unsigned long size)
-{
- void *n = kzalloc(size, GFP_KERNEL | __GFP_NOWARN | __GFP_REPEAT);
+ if (!umem)
+ return NULL;
- if (!n)
- n = vzalloc(size);
- return n;
+ umem->umem_tree = RB_ROOT;
+ umem->numem = 0;
+ INIT_LIST_HEAD(&umem->umem_list);
+
+ return umem;
}
static long vhost_set_memory(struct vhost_dev *d, struct vhost_memory __user *m)
{
- struct vhost_memory mem, *newmem, *oldmem;
+ struct vhost_memory mem, *newmem;
+ struct vhost_memory_region *region;
+ struct vhost_umem *newumem, *oldumem;
unsigned long size = offsetof(struct vhost_memory, regions);
int i;
@@ -736,24 +1225,47 @@ static long vhost_set_memory(struct vhost_dev *d, struct vhost_memory __user *m)
kvfree(newmem);
return -EFAULT;
}
- sort(newmem->regions, newmem->nregions, sizeof(*newmem->regions),
- vhost_memory_reg_sort_cmp, NULL);
- if (!memory_access_ok(d, newmem, 0)) {
+ newumem = vhost_umem_alloc();
+ if (!newumem) {
kvfree(newmem);
- return -EFAULT;
+ return -ENOMEM;
}
- oldmem = d->memory;
- d->memory = newmem;
+
+ for (region = newmem->regions;
+ region < newmem->regions + mem.nregions;
+ region++) {
+ if (vhost_new_umem_range(newumem,
+ region->guest_phys_addr,
+ region->memory_size,
+ region->guest_phys_addr +
+ region->memory_size - 1,
+ region->userspace_addr,
+ VHOST_ACCESS_RW))
+ goto err;
+ }
+
+ if (!memory_access_ok(d, newumem, 0))
+ goto err;
+
+ oldumem = d->umem;
+ d->umem = newumem;
/* All memory accesses are done under some VQ mutex. */
for (i = 0; i < d->nvqs; ++i) {
mutex_lock(&d->vqs[i]->mutex);
- d->vqs[i]->memory = newmem;
+ d->vqs[i]->umem = newumem;
mutex_unlock(&d->vqs[i]->mutex);
}
- kvfree(oldmem);
+
+ kvfree(newmem);
+ vhost_umem_clean(oldumem);
return 0;
+
+err:
+ vhost_umem_clean(newumem);
+ kvfree(newmem);
+ return -EFAULT;
}
long vhost_vring_ioctl(struct vhost_dev *d, int ioctl, void __user *argp)
@@ -974,6 +1486,30 @@ long vhost_vring_ioctl(struct vhost_dev *d, int ioctl, void __user *argp)
}
EXPORT_SYMBOL_GPL(vhost_vring_ioctl);
+int vhost_init_device_iotlb(struct vhost_dev *d, bool enabled)
+{
+ struct vhost_umem *niotlb, *oiotlb;
+ int i;
+
+ niotlb = vhost_umem_alloc();
+ if (!niotlb)
+ return -ENOMEM;
+
+ oiotlb = d->iotlb;
+ d->iotlb = niotlb;
+
+ for (i = 0; i < d->nvqs; ++i) {
+ mutex_lock(&d->vqs[i]->mutex);
+ d->vqs[i]->iotlb = niotlb;
+ mutex_unlock(&d->vqs[i]->mutex);
+ }
+
+ vhost_umem_clean(oiotlb);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(vhost_init_device_iotlb);
+
/* Caller must have device mutex */
long vhost_dev_ioctl(struct vhost_dev *d, unsigned int ioctl, void __user *argp)
{
@@ -1056,28 +1592,6 @@ done:
}
EXPORT_SYMBOL_GPL(vhost_dev_ioctl);
-static const struct vhost_memory_region *find_region(struct vhost_memory *mem,
- __u64 addr, __u32 len)
-{
- const struct vhost_memory_region *reg;
- int start = 0, end = mem->nregions;
-
- while (start < end) {
- int slot = start + (end - start) / 2;
- reg = mem->regions + slot;
- if (addr >= reg->guest_phys_addr)
- end = slot;
- else
- start = slot + 1;
- }
-
- reg = mem->regions + start;
- if (addr >= reg->guest_phys_addr &&
- reg->guest_phys_addr + reg->memory_size > addr)
- return reg;
- return NULL;
-}
-
/* TODO: This is really inefficient. We need something like get_user()
* (instruction directly accesses the data, with an exception table entry
* returning -EFAULT). See Documentation/x86/exception-tables.txt.
@@ -1156,7 +1670,8 @@ EXPORT_SYMBOL_GPL(vhost_log_write);
static int vhost_update_used_flags(struct vhost_virtqueue *vq)
{
void __user *used;
- if (__put_user(cpu_to_vhost16(vq, vq->used_flags), &vq->used->flags) < 0)
+ if (vhost_put_user(vq, cpu_to_vhost16(vq, vq->used_flags),
+ &vq->used->flags) < 0)
return -EFAULT;
if (unlikely(vq->log_used)) {
/* Make sure the flag is seen before log. */
@@ -1174,7 +1689,8 @@ static int vhost_update_used_flags(struct vhost_virtqueue *vq)
static int vhost_update_avail_event(struct vhost_virtqueue *vq, u16 avail_event)
{
- if (__put_user(cpu_to_vhost16(vq, vq->avail_idx), vhost_avail_event(vq)))
+ if (vhost_put_user(vq, cpu_to_vhost16(vq, vq->avail_idx),
+ vhost_avail_event(vq)))
return -EFAULT;
if (unlikely(vq->log_used)) {
void __user *used;
@@ -1208,15 +1724,20 @@ int vhost_vq_init_access(struct vhost_virtqueue *vq)
if (r)
goto err;
vq->signalled_used_valid = false;
- if (!access_ok(VERIFY_READ, &vq->used->idx, sizeof vq->used->idx)) {
+ if (!vq->iotlb &&
+ !access_ok(VERIFY_READ, &vq->used->idx, sizeof vq->used->idx)) {
r = -EFAULT;
goto err;
}
- r = __get_user(last_used_idx, &vq->used->idx);
- if (r)
+ r = vhost_get_user(vq, last_used_idx, &vq->used->idx);
+ if (r) {
+ vq_err(vq, "Can't access used idx at %p\n",
+ &vq->used->idx);
goto err;
+ }
vq->last_used_idx = vhost16_to_cpu(vq, last_used_idx);
return 0;
+
err:
vq->is_le = is_le;
return r;
@@ -1224,36 +1745,48 @@ err:
EXPORT_SYMBOL_GPL(vhost_vq_init_access);
static int translate_desc(struct vhost_virtqueue *vq, u64 addr, u32 len,
- struct iovec iov[], int iov_size)
+ struct iovec iov[], int iov_size, int access)
{
- const struct vhost_memory_region *reg;
- struct vhost_memory *mem;
+ const struct vhost_umem_node *node;
+ struct vhost_dev *dev = vq->dev;
+ struct vhost_umem *umem = dev->iotlb ? dev->iotlb : dev->umem;
struct iovec *_iov;
u64 s = 0;
int ret = 0;
- mem = vq->memory;
while ((u64)len > s) {
u64 size;
if (unlikely(ret >= iov_size)) {
ret = -ENOBUFS;
break;
}
- reg = find_region(mem, addr, len);
- if (unlikely(!reg)) {
- ret = -EFAULT;
+
+ node = vhost_umem_interval_tree_iter_first(&umem->umem_tree,
+ addr, addr + len - 1);
+ if (node == NULL || node->start > addr) {
+ if (umem != dev->iotlb) {
+ ret = -EFAULT;
+ break;
+ }
+ ret = -EAGAIN;
+ break;
+ } else if (!(node->perm & access)) {
+ ret = -EPERM;
break;
}
+
_iov = iov + ret;
- size = reg->memory_size - addr + reg->guest_phys_addr;
+ size = node->size - addr + node->start;
_iov->iov_len = min((u64)len - s, size);
_iov->iov_base = (void __user *)(unsigned long)
- (reg->userspace_addr + addr - reg->guest_phys_addr);
+ (node->userspace_addr + addr - node->start);
s += size;
addr += size;
++ret;
}
+ if (ret == -EAGAIN)
+ vhost_iotlb_miss(vq, addr, access);
return ret;
}
@@ -1288,7 +1821,7 @@ static int get_indirect(struct vhost_virtqueue *vq,
unsigned int i = 0, count, found = 0;
u32 len = vhost32_to_cpu(vq, indirect->len);
struct iov_iter from;
- int ret;
+ int ret, access;
/* Sanity check */
if (unlikely(len % sizeof desc)) {
@@ -1300,9 +1833,10 @@ static int get_indirect(struct vhost_virtqueue *vq,
}
ret = translate_desc(vq, vhost64_to_cpu(vq, indirect->addr), len, vq->indirect,
- UIO_MAXIOV);
+ UIO_MAXIOV, VHOST_ACCESS_RO);
if (unlikely(ret < 0)) {
- vq_err(vq, "Translation failure %d in indirect.\n", ret);
+ if (ret != -EAGAIN)
+ vq_err(vq, "Translation failure %d in indirect.\n", ret);
return ret;
}
iov_iter_init(&from, READ, vq->indirect, ret, len);
@@ -1340,16 +1874,22 @@ static int get_indirect(struct vhost_virtqueue *vq,
return -EINVAL;
}
+ if (desc.flags & cpu_to_vhost16(vq, VRING_DESC_F_WRITE))
+ access = VHOST_ACCESS_WO;
+ else
+ access = VHOST_ACCESS_RO;
+
ret = translate_desc(vq, vhost64_to_cpu(vq, desc.addr),
vhost32_to_cpu(vq, desc.len), iov + iov_count,
- iov_size - iov_count);
+ iov_size - iov_count, access);
if (unlikely(ret < 0)) {
- vq_err(vq, "Translation failure %d indirect idx %d\n",
- ret, i);
+ if (ret != -EAGAIN)
+ vq_err(vq, "Translation failure %d indirect idx %d\n",
+ ret, i);
return ret;
}
/* If this is an input descriptor, increment that count. */
- if (desc.flags & cpu_to_vhost16(vq, VRING_DESC_F_WRITE)) {
+ if (access == VHOST_ACCESS_WO) {
*in_num += ret;
if (unlikely(log)) {
log[*log_num].addr = vhost64_to_cpu(vq, desc.addr);
@@ -1388,11 +1928,11 @@ int vhost_get_vq_desc(struct vhost_virtqueue *vq,
u16 last_avail_idx;
__virtio16 avail_idx;
__virtio16 ring_head;
- int ret;
+ int ret, access;
/* Check it isn't doing very strange things with descriptor numbers. */
last_avail_idx = vq->last_avail_idx;
- if (unlikely(__get_user(avail_idx, &vq->avail->idx))) {
+ if (unlikely(vhost_get_user(vq, avail_idx, &vq->avail->idx))) {
vq_err(vq, "Failed to access avail idx at %p\n",
&vq->avail->idx);
return -EFAULT;
@@ -1414,8 +1954,8 @@ int vhost_get_vq_desc(struct vhost_virtqueue *vq,
/* Grab the next descriptor number they're advertising, and increment
* the index we've seen. */
- if (unlikely(__get_user(ring_head,
- &vq->avail->ring[last_avail_idx & (vq->num - 1)]))) {
+ if (unlikely(vhost_get_user(vq, ring_head,
+ &vq->avail->ring[last_avail_idx & (vq->num - 1)]))) {
vq_err(vq, "Failed to read head: idx %d address %p\n",
last_avail_idx,
&vq->avail->ring[last_avail_idx % vq->num]);
@@ -1450,7 +1990,8 @@ int vhost_get_vq_desc(struct vhost_virtqueue *vq,
i, vq->num, head);
return -EINVAL;
}
- ret = __copy_from_user(&desc, vq->desc + i, sizeof desc);
+ ret = vhost_copy_from_user(vq, &desc, vq->desc + i,
+ sizeof desc);
if (unlikely(ret)) {
vq_err(vq, "Failed to get descriptor: idx %d addr %p\n",
i, vq->desc + i);
@@ -1461,22 +2002,28 @@ int vhost_get_vq_desc(struct vhost_virtqueue *vq,
out_num, in_num,
log, log_num, &desc);
if (unlikely(ret < 0)) {
- vq_err(vq, "Failure detected "
- "in indirect descriptor at idx %d\n", i);
+ if (ret != -EAGAIN)
+ vq_err(vq, "Failure detected "
+ "in indirect descriptor at idx %d\n", i);
return ret;
}
continue;
}
+ if (desc.flags & cpu_to_vhost16(vq, VRING_DESC_F_WRITE))
+ access = VHOST_ACCESS_WO;
+ else
+ access = VHOST_ACCESS_RO;
ret = translate_desc(vq, vhost64_to_cpu(vq, desc.addr),
vhost32_to_cpu(vq, desc.len), iov + iov_count,
- iov_size - iov_count);
+ iov_size - iov_count, access);
if (unlikely(ret < 0)) {
- vq_err(vq, "Translation failure %d descriptor idx %d\n",
- ret, i);
+ if (ret != -EAGAIN)
+ vq_err(vq, "Translation failure %d descriptor idx %d\n",
+ ret, i);
return ret;
}
- if (desc.flags & cpu_to_vhost16(vq, VRING_DESC_F_WRITE)) {
+ if (access == VHOST_ACCESS_WO) {
/* If this is an input descriptor,
* increment that count. */
*in_num += ret;
@@ -1538,15 +2085,15 @@ static int __vhost_add_used_n(struct vhost_virtqueue *vq,
start = vq->last_used_idx & (vq->num - 1);
used = vq->used->ring + start;
if (count == 1) {
- if (__put_user(heads[0].id, &used->id)) {
+ if (vhost_put_user(vq, heads[0].id, &used->id)) {
vq_err(vq, "Failed to write used id");
return -EFAULT;
}
- if (__put_user(heads[0].len, &used->len)) {
+ if (vhost_put_user(vq, heads[0].len, &used->len)) {
vq_err(vq, "Failed to write used len");
return -EFAULT;
}
- } else if (__copy_to_user(used, heads, count * sizeof *used)) {
+ } else if (vhost_copy_to_user(vq, used, heads, count * sizeof *used)) {
vq_err(vq, "Failed to write used");
return -EFAULT;
}
@@ -1590,7 +2137,8 @@ int vhost_add_used_n(struct vhost_virtqueue *vq, struct vring_used_elem *heads,
/* Make sure buffer is written before we update index. */
smp_wmb();
- if (__put_user(cpu_to_vhost16(vq, vq->last_used_idx), &vq->used->idx)) {
+ if (vhost_put_user(vq, cpu_to_vhost16(vq, vq->last_used_idx),
+ &vq->used->idx)) {
vq_err(vq, "Failed to increment used idx");
return -EFAULT;
}
@@ -1622,7 +2170,7 @@ static bool vhost_notify(struct vhost_dev *dev, struct vhost_virtqueue *vq)
if (!vhost_has_feature(vq, VIRTIO_RING_F_EVENT_IDX)) {
__virtio16 flags;
- if (__get_user(flags, &vq->avail->flags)) {
+ if (vhost_get_user(vq, flags, &vq->avail->flags)) {
vq_err(vq, "Failed to get flags");
return true;
}
@@ -1636,7 +2184,7 @@ static bool vhost_notify(struct vhost_dev *dev, struct vhost_virtqueue *vq)
if (unlikely(!v))
return true;
- if (__get_user(event, vhost_used_event(vq))) {
+ if (vhost_get_user(vq, event, vhost_used_event(vq))) {
vq_err(vq, "Failed to get used event idx");
return true;
}
@@ -1678,7 +2226,7 @@ bool vhost_vq_avail_empty(struct vhost_dev *dev, struct vhost_virtqueue *vq)
__virtio16 avail_idx;
int r;
- r = __get_user(avail_idx, &vq->avail->idx);
+ r = vhost_get_user(vq, avail_idx, &vq->avail->idx);
if (r)
return false;
@@ -1713,7 +2261,7 @@ bool vhost_enable_notify(struct vhost_dev *dev, struct vhost_virtqueue *vq)
/* They could have slipped one in as we were doing that: make
* sure it's written, then check again. */
smp_mb();
- r = __get_user(avail_idx, &vq->avail->idx);
+ r = vhost_get_user(vq, avail_idx, &vq->avail->idx);
if (r) {
vq_err(vq, "Failed to check avail idx at %p: %d\n",
&vq->avail->idx, r);
@@ -1741,6 +2289,47 @@ void vhost_disable_notify(struct vhost_dev *dev, struct vhost_virtqueue *vq)
}
EXPORT_SYMBOL_GPL(vhost_disable_notify);
+/* Create a new message. */
+struct vhost_msg_node *vhost_new_msg(struct vhost_virtqueue *vq, int type)
+{
+ struct vhost_msg_node *node = kmalloc(sizeof *node, GFP_KERNEL);
+ if (!node)
+ return NULL;
+ node->vq = vq;
+ node->msg.type = type;
+ return node;
+}
+EXPORT_SYMBOL_GPL(vhost_new_msg);
+
+void vhost_enqueue_msg(struct vhost_dev *dev, struct list_head *head,
+ struct vhost_msg_node *node)
+{
+ spin_lock(&dev->iotlb_lock);
+ list_add_tail(&node->node, head);
+ spin_unlock(&dev->iotlb_lock);
+
+ wake_up_interruptible_poll(&dev->wait, POLLIN | POLLRDNORM);
+}
+EXPORT_SYMBOL_GPL(vhost_enqueue_msg);
+
+struct vhost_msg_node *vhost_dequeue_msg(struct vhost_dev *dev,
+ struct list_head *head)
+{
+ struct vhost_msg_node *node = NULL;
+
+ spin_lock(&dev->iotlb_lock);
+ if (!list_empty(head)) {
+ node = list_first_entry(head, struct vhost_msg_node,
+ node);
+ list_del(&node->node);
+ }
+ spin_unlock(&dev->iotlb_lock);
+
+ return node;
+}
+EXPORT_SYMBOL_GPL(vhost_dequeue_msg);
+
+
static int __init vhost_init(void)
{
return 0;
diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h
index d36d8beb3351..78f3c5fc02e4 100644
--- a/drivers/vhost/vhost.h
+++ b/drivers/vhost/vhost.h
@@ -15,13 +15,15 @@
struct vhost_work;
typedef void (*vhost_work_fn_t)(struct vhost_work *work);
+#define VHOST_WORK_QUEUED 1
struct vhost_work {
- struct list_head node;
+ struct llist_node node;
vhost_work_fn_t fn;
wait_queue_head_t done;
int flushing;
unsigned queue_seq;
unsigned done_seq;
+ unsigned long flags;
};
/* Poll a file (eventfd or socket) */
@@ -53,6 +55,27 @@ struct vhost_log {
u64 len;
};
+#define START(node) ((node)->start)
+#define LAST(node) ((node)->last)
+
+struct vhost_umem_node {
+ struct rb_node rb;
+ struct list_head link;
+ __u64 start;
+ __u64 last;
+ __u64 size;
+ __u64 userspace_addr;
+ __u32 perm;
+ __u32 flags_padding;
+ __u64 __subtree_last;
+};
+
+struct vhost_umem {
+ struct rb_root umem_tree;
+ struct list_head umem_list;
+ int numem;
+};
+
/* The virtqueue structure describes a queue attached to a device. */
struct vhost_virtqueue {
struct vhost_dev *dev;
@@ -98,10 +121,12 @@ struct vhost_virtqueue {
u64 log_addr;
struct iovec iov[UIO_MAXIOV];
+ struct iovec iotlb_iov[64];
struct iovec *indirect;
struct vring_used_elem *heads;
/* Protected by virtqueue mutex. */
- struct vhost_memory *memory;
+ struct vhost_umem *umem;
+ struct vhost_umem *iotlb;
void *private_data;
u64 acked_features;
/* Log write descriptors */
@@ -118,25 +143,35 @@ struct vhost_virtqueue {
u32 busyloop_timeout;
};
+struct vhost_msg_node {
+ struct vhost_msg msg;
+ struct vhost_virtqueue *vq;
+ struct list_head node;
+};
+
struct vhost_dev {
- struct vhost_memory *memory;
struct mm_struct *mm;
struct mutex mutex;
struct vhost_virtqueue **vqs;
int nvqs;
struct file *log_file;
struct eventfd_ctx *log_ctx;
- spinlock_t work_lock;
- struct list_head work_list;
+ struct llist_head work_list;
struct task_struct *worker;
+ struct vhost_umem *umem;
+ struct vhost_umem *iotlb;
+ spinlock_t iotlb_lock;
+ struct list_head read_list;
+ struct list_head pending_list;
+ wait_queue_head_t wait;
};
void vhost_dev_init(struct vhost_dev *, struct vhost_virtqueue **vqs, int nvqs);
long vhost_dev_set_owner(struct vhost_dev *dev);
bool vhost_dev_has_owner(struct vhost_dev *dev);
long vhost_dev_check_owner(struct vhost_dev *);
-struct vhost_memory *vhost_dev_reset_owner_prepare(void);
-void vhost_dev_reset_owner(struct vhost_dev *, struct vhost_memory *);
+struct vhost_umem *vhost_dev_reset_owner_prepare(void);
+void vhost_dev_reset_owner(struct vhost_dev *, struct vhost_umem *);
void vhost_dev_cleanup(struct vhost_dev *, bool locked);
void vhost_dev_stop(struct vhost_dev *);
long vhost_dev_ioctl(struct vhost_dev *, unsigned int ioctl, void __user *argp);
@@ -165,6 +200,21 @@ bool vhost_enable_notify(struct vhost_dev *, struct vhost_virtqueue *);
int vhost_log_write(struct vhost_virtqueue *vq, struct vhost_log *log,
unsigned int log_num, u64 len);
+int vq_iotlb_prefetch(struct vhost_virtqueue *vq);
+
+struct vhost_msg_node *vhost_new_msg(struct vhost_virtqueue *vq, int type);
+void vhost_enqueue_msg(struct vhost_dev *dev,
+ struct list_head *head,
+ struct vhost_msg_node *node);
+struct vhost_msg_node *vhost_dequeue_msg(struct vhost_dev *dev,
+ struct list_head *head);
+unsigned int vhost_chr_poll(struct file *file, struct vhost_dev *dev,
+ poll_table *wait);
+ssize_t vhost_chr_read_iter(struct vhost_dev *dev, struct iov_iter *to,
+ int noblock);
+ssize_t vhost_chr_write_iter(struct vhost_dev *dev,
+ struct iov_iter *from);
+int vhost_init_device_iotlb(struct vhost_dev *d, bool enabled);
#define vq_err(vq, fmt, ...) do { \
pr_debug(pr_fmt(fmt), ##__VA_ARGS__); \
diff --git a/drivers/vhost/vsock.c b/drivers/vhost/vsock.c
new file mode 100644
index 000000000000..e3b30ea9ece5
--- /dev/null
+++ b/drivers/vhost/vsock.c
@@ -0,0 +1,723 @@
+/*
+ * vhost transport for vsock
+ *
+ * Copyright (C) 2013-2015 Red Hat, Inc.
+ * Author: Asias He <asias@redhat.com>
+ * Stefan Hajnoczi <stefanha@redhat.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2.
+ */
+#include <linux/miscdevice.h>
+#include <linux/atomic.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/vmalloc.h>
+#include <net/sock.h>
+#include <linux/virtio_vsock.h>
+#include <linux/vhost.h>
+
+#include <net/af_vsock.h>
+#include "vhost.h"
+
+#define VHOST_VSOCK_DEFAULT_HOST_CID 2
+
+enum {
+ VHOST_VSOCK_FEATURES = VHOST_FEATURES,
+};
+
+/* Used to track all the vhost_vsock instances on the system. */
+static DEFINE_SPINLOCK(vhost_vsock_lock);
+static LIST_HEAD(vhost_vsock_list);
+
+struct vhost_vsock {
+ struct vhost_dev dev;
+ struct vhost_virtqueue vqs[2];
+
+ /* Link to global vhost_vsock_list, protected by vhost_vsock_lock */
+ struct list_head list;
+
+ struct vhost_work send_pkt_work;
+ spinlock_t send_pkt_list_lock;
+ struct list_head send_pkt_list; /* host->guest pending packets */
+
+ atomic_t queued_replies;
+
+ u32 guest_cid;
+};
+
+static u32 vhost_transport_get_local_cid(void)
+{
+ return VHOST_VSOCK_DEFAULT_HOST_CID;
+}
+
+static struct vhost_vsock *vhost_vsock_get(u32 guest_cid)
+{
+ struct vhost_vsock *vsock;
+
+ spin_lock_bh(&vhost_vsock_lock);
+ list_for_each_entry(vsock, &vhost_vsock_list, list) {
+ u32 other_cid = vsock->guest_cid;
+
+ /* Skip instances that have no CID yet */
+ if (other_cid == 0)
+ continue;
+
+ if (other_cid == guest_cid) {
+ spin_unlock_bh(&vhost_vsock_lock);
+ return vsock;
+ }
+ }
+ spin_unlock_bh(&vhost_vsock_lock);
+
+ return NULL;
+}
+
+static void
+vhost_transport_do_send_pkt(struct vhost_vsock *vsock,
+ struct vhost_virtqueue *vq)
+{
+ struct vhost_virtqueue *tx_vq = &vsock->vqs[VSOCK_VQ_TX];
+ bool added = false;
+ bool restart_tx = false;
+
+ mutex_lock(&vq->mutex);
+
+ if (!vq->private_data)
+ goto out;
+
+ /* Avoid further vmexits, we're already processing the virtqueue */
+ vhost_disable_notify(&vsock->dev, vq);
+
+ for (;;) {
+ struct virtio_vsock_pkt *pkt;
+ struct iov_iter iov_iter;
+ unsigned out, in;
+ size_t nbytes;
+ size_t len;
+ int head;
+
+ spin_lock_bh(&vsock->send_pkt_list_lock);
+ if (list_empty(&vsock->send_pkt_list)) {
+ spin_unlock_bh(&vsock->send_pkt_list_lock);
+ vhost_enable_notify(&vsock->dev, vq);
+ break;
+ }
+
+ pkt = list_first_entry(&vsock->send_pkt_list,
+ struct virtio_vsock_pkt, list);
+ list_del_init(&pkt->list);
+ spin_unlock_bh(&vsock->send_pkt_list_lock);
+
+ head = vhost_get_vq_desc(vq, vq->iov, ARRAY_SIZE(vq->iov),
+ &out, &in, NULL, NULL);
+ if (head < 0) {
+ spin_lock_bh(&vsock->send_pkt_list_lock);
+ list_add(&pkt->list, &vsock->send_pkt_list);
+ spin_unlock_bh(&vsock->send_pkt_list_lock);
+ break;
+ }
+
+ if (head == vq->num) {
+ spin_lock_bh(&vsock->send_pkt_list_lock);
+ list_add(&pkt->list, &vsock->send_pkt_list);
+ spin_unlock_bh(&vsock->send_pkt_list_lock);
+
+ /* We cannot finish yet if more buffers snuck in while
+ * re-enabling notify.
+ */
+ if (unlikely(vhost_enable_notify(&vsock->dev, vq))) {
+ vhost_disable_notify(&vsock->dev, vq);
+ continue;
+ }
+ break;
+ }
+
+ if (out) {
+ virtio_transport_free_pkt(pkt);
+ vq_err(vq, "Expected 0 output buffers, got %u\n", out);
+ break;
+ }
+
+ len = iov_length(&vq->iov[out], in);
+ iov_iter_init(&iov_iter, READ, &vq->iov[out], in, len);
+
+ nbytes = copy_to_iter(&pkt->hdr, sizeof(pkt->hdr), &iov_iter);
+ if (nbytes != sizeof(pkt->hdr)) {
+ virtio_transport_free_pkt(pkt);
+ vq_err(vq, "Faulted on copying pkt hdr\n");
+ break;
+ }
+
+ nbytes = copy_to_iter(pkt->buf, pkt->len, &iov_iter);
+ if (nbytes != pkt->len) {
+ virtio_transport_free_pkt(pkt);
+ vq_err(vq, "Faulted on copying pkt buf\n");
+ break;
+ }
+
+ vhost_add_used(vq, head, sizeof(pkt->hdr) + pkt->len);
+ added = true;
+
+ if (pkt->reply) {
+ int val;
+
+ val = atomic_dec_return(&vsock->queued_replies);
+
+ /* Do we have resources to resume tx processing? */
+ if (val + 1 == tx_vq->num)
+ restart_tx = true;
+ }
+
+ virtio_transport_free_pkt(pkt);
+ }
+ if (added)
+ vhost_signal(&vsock->dev, vq);
+
+out:
+ mutex_unlock(&vq->mutex);
+
+ if (restart_tx)
+ vhost_poll_queue(&tx_vq->poll);
+}
+
+static void vhost_transport_send_pkt_work(struct vhost_work *work)
+{
+ struct vhost_virtqueue *vq;
+ struct vhost_vsock *vsock;
+
+ vsock = container_of(work, struct vhost_vsock, send_pkt_work);
+ vq = &vsock->vqs[VSOCK_VQ_RX];
+
+ vhost_transport_do_send_pkt(vsock, vq);
+}
+
+static int
+vhost_transport_send_pkt(struct virtio_vsock_pkt *pkt)
+{
+ struct vhost_vsock *vsock;
+ struct vhost_virtqueue *vq;
+ int len = pkt->len;
+
+ /* Find the vhost_vsock according to guest context id */
+ vsock = vhost_vsock_get(le64_to_cpu(pkt->hdr.dst_cid));
+ if (!vsock) {
+ virtio_transport_free_pkt(pkt);
+ return -ENODEV;
+ }
+
+ vq = &vsock->vqs[VSOCK_VQ_RX];
+
+ if (pkt->reply)
+ atomic_inc(&vsock->queued_replies);
+
+ spin_lock_bh(&vsock->send_pkt_list_lock);
+ list_add_tail(&pkt->list, &vsock->send_pkt_list);
+ spin_unlock_bh(&vsock->send_pkt_list_lock);
+
+ vhost_work_queue(&vsock->dev, &vsock->send_pkt_work);
+ return len;
+}
+
+static struct virtio_vsock_pkt *
+vhost_vsock_alloc_pkt(struct vhost_virtqueue *vq,
+ unsigned int out, unsigned int in)
+{
+ struct virtio_vsock_pkt *pkt;
+ struct iov_iter iov_iter;
+ size_t nbytes;
+ size_t len;
+
+ if (in != 0) {
+ vq_err(vq, "Expected 0 input buffers, got %u\n", in);
+ return NULL;
+ }
+
+ pkt = kzalloc(sizeof(*pkt), GFP_KERNEL);
+ if (!pkt)
+ return NULL;
+
+ len = iov_length(vq->iov, out);
+ iov_iter_init(&iov_iter, WRITE, vq->iov, out, len);
+
+ nbytes = copy_from_iter(&pkt->hdr, sizeof(pkt->hdr), &iov_iter);
+ if (nbytes != sizeof(pkt->hdr)) {
+ vq_err(vq, "Expected %zu bytes for pkt->hdr, got %zu bytes\n",
+ sizeof(pkt->hdr), nbytes);
+ kfree(pkt);
+ return NULL;
+ }
+
+ if (le16_to_cpu(pkt->hdr.type) == VIRTIO_VSOCK_TYPE_STREAM)
+ pkt->len = le32_to_cpu(pkt->hdr.len);
+
+ /* No payload */
+ if (!pkt->len)
+ return pkt;
+
+ /* The pkt is too big */
+ if (pkt->len > VIRTIO_VSOCK_MAX_PKT_BUF_SIZE) {
+ kfree(pkt);
+ return NULL;
+ }
+
+ pkt->buf = kmalloc(pkt->len, GFP_KERNEL);
+ if (!pkt->buf) {
+ kfree(pkt);
+ return NULL;
+ }
+
+ nbytes = copy_from_iter(pkt->buf, pkt->len, &iov_iter);
+ if (nbytes != pkt->len) {
+ vq_err(vq, "Expected %u byte payload, got %zu bytes\n",
+ pkt->len, nbytes);
+ virtio_transport_free_pkt(pkt);
+ return NULL;
+ }
+
+ return pkt;
+}
+
+/* Is there space left for replies to rx packets? */
+static bool vhost_vsock_more_replies(struct vhost_vsock *vsock)
+{
+ struct vhost_virtqueue *vq = &vsock->vqs[VSOCK_VQ_TX];
+ int val;
+
+ smp_rmb(); /* paired with atomic_inc() and atomic_dec_return() */
+ val = atomic_read(&vsock->queued_replies);
+
+ return val < vq->num;
+}
+
+static void vhost_vsock_handle_tx_kick(struct vhost_work *work)
+{
+ struct vhost_virtqueue *vq = container_of(work, struct vhost_virtqueue,
+ poll.work);
+ struct vhost_vsock *vsock = container_of(vq->dev, struct vhost_vsock,
+ dev);
+ struct virtio_vsock_pkt *pkt;
+ int head;
+ unsigned int out, in;
+ bool added = false;
+
+ mutex_lock(&vq->mutex);
+
+ if (!vq->private_data)
+ goto out;
+
+ vhost_disable_notify(&vsock->dev, vq);
+ for (;;) {
+ u32 len;
+
+ if (!vhost_vsock_more_replies(vsock)) {
+ /* Stop tx until the device processes already
+ * pending replies. Leave tx virtqueue
+ * callbacks disabled.
+ */
+ goto no_more_replies;
+ }
+
+ head = vhost_get_vq_desc(vq, vq->iov, ARRAY_SIZE(vq->iov),
+ &out, &in, NULL, NULL);
+ if (head < 0)
+ break;
+
+ if (head == vq->num) {
+ if (unlikely(vhost_enable_notify(&vsock->dev, vq))) {
+ vhost_disable_notify(&vsock->dev, vq);
+ continue;
+ }
+ break;
+ }
+
+ pkt = vhost_vsock_alloc_pkt(vq, out, in);
+ if (!pkt) {
+ vq_err(vq, "Faulted on pkt\n");
+ continue;
+ }
+
+ len = pkt->len;
+
+ /* Only accept correctly addressed packets */
+ if (le64_to_cpu(pkt->hdr.src_cid) == vsock->guest_cid)
+ virtio_transport_recv_pkt(pkt);
+ else
+ virtio_transport_free_pkt(pkt);
+
+ vhost_add_used(vq, head, sizeof(pkt->hdr) + len);
+ added = true;
+ }
+
+no_more_replies:
+ if (added)
+ vhost_signal(&vsock->dev, vq);
+
+out:
+ mutex_unlock(&vq->mutex);
+}
+
+static void vhost_vsock_handle_rx_kick(struct vhost_work *work)
+{
+ struct vhost_virtqueue *vq = container_of(work, struct vhost_virtqueue,
+ poll.work);
+ struct vhost_vsock *vsock = container_of(vq->dev, struct vhost_vsock,
+ dev);
+
+ vhost_transport_do_send_pkt(vsock, vq);
+}
+
+static int vhost_vsock_start(struct vhost_vsock *vsock)
+{
+ size_t i;
+ int ret;
+
+ mutex_lock(&vsock->dev.mutex);
+
+ ret = vhost_dev_check_owner(&vsock->dev);
+ if (ret)
+ goto err;
+
+ for (i = 0; i < ARRAY_SIZE(vsock->vqs); i++) {
+ struct vhost_virtqueue *vq = &vsock->vqs[i];
+
+ mutex_lock(&vq->mutex);
+
+ if (!vhost_vq_access_ok(vq)) {
+ ret = -EFAULT;
+ mutex_unlock(&vq->mutex);
+ goto err_vq;
+ }
+
+ if (!vq->private_data) {
+ vq->private_data = vsock;
+ vhost_vq_init_access(vq);
+ }
+
+ mutex_unlock(&vq->mutex);
+ }
+
+ mutex_unlock(&vsock->dev.mutex);
+ return 0;
+
+err_vq:
+ for (i = 0; i < ARRAY_SIZE(vsock->vqs); i++) {
+ struct vhost_virtqueue *vq = &vsock->vqs[i];
+
+ mutex_lock(&vq->mutex);
+ vq->private_data = NULL;
+ mutex_unlock(&vq->mutex);
+ }
+err:
+ mutex_unlock(&vsock->dev.mutex);
+ return ret;
+}
+
+static int vhost_vsock_stop(struct vhost_vsock *vsock)
+{
+ size_t i;
+ int ret;
+
+ mutex_lock(&vsock->dev.mutex);
+
+ ret = vhost_dev_check_owner(&vsock->dev);
+ if (ret)
+ goto err;
+
+ for (i = 0; i < ARRAY_SIZE(vsock->vqs); i++) {
+ struct vhost_virtqueue *vq = &vsock->vqs[i];
+
+ mutex_lock(&vq->mutex);
+ vq->private_data = NULL;
+ mutex_unlock(&vq->mutex);
+ }
+
+err:
+ mutex_unlock(&vsock->dev.mutex);
+ return ret;
+}
+
+static void vhost_vsock_free(struct vhost_vsock *vsock)
+{
+ kvfree(vsock);
+}
+
+static int vhost_vsock_dev_open(struct inode *inode, struct file *file)
+{
+ struct vhost_virtqueue **vqs;
+ struct vhost_vsock *vsock;
+ int ret;
+
+ /* This struct is large and allocation could fail, fall back to vmalloc
+ * if there is no other way.
+ */
+ vsock = kzalloc(sizeof(*vsock), GFP_KERNEL | __GFP_NOWARN | __GFP_REPEAT);
+ if (!vsock) {
+ vsock = vmalloc(sizeof(*vsock));
+ if (!vsock)
+ return -ENOMEM;
+ }
+
+ vqs = kmalloc_array(ARRAY_SIZE(vsock->vqs), sizeof(*vqs), GFP_KERNEL);
+ if (!vqs) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ atomic_set(&vsock->queued_replies, 0);
+
+ vqs[VSOCK_VQ_TX] = &vsock->vqs[VSOCK_VQ_TX];
+ vqs[VSOCK_VQ_RX] = &vsock->vqs[VSOCK_VQ_RX];
+ vsock->vqs[VSOCK_VQ_TX].handle_kick = vhost_vsock_handle_tx_kick;
+ vsock->vqs[VSOCK_VQ_RX].handle_kick = vhost_vsock_handle_rx_kick;
+
+ vhost_dev_init(&vsock->dev, vqs, ARRAY_SIZE(vsock->vqs));
+
+ file->private_data = vsock;
+ spin_lock_init(&vsock->send_pkt_list_lock);
+ INIT_LIST_HEAD(&vsock->send_pkt_list);
+ vhost_work_init(&vsock->send_pkt_work, vhost_transport_send_pkt_work);
+
+ spin_lock_bh(&vhost_vsock_lock);
+ list_add_tail(&vsock->list, &vhost_vsock_list);
+ spin_unlock_bh(&vhost_vsock_lock);
+ return 0;
+
+out:
+ vhost_vsock_free(vsock);
+ return ret;
+}
+
+static void vhost_vsock_flush(struct vhost_vsock *vsock)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(vsock->vqs); i++)
+ if (vsock->vqs[i].handle_kick)
+ vhost_poll_flush(&vsock->vqs[i].poll);
+ vhost_work_flush(&vsock->dev, &vsock->send_pkt_work);
+}
+
+static void vhost_vsock_reset_orphans(struct sock *sk)
+{
+ struct vsock_sock *vsk = vsock_sk(sk);
+
+ /* vmci_transport.c doesn't take sk_lock here either. At least we're
+ * under vsock_table_lock so the sock cannot disappear while we're
+ * executing.
+ */
+
+ if (!vhost_vsock_get(vsk->local_addr.svm_cid)) {
+ sock_set_flag(sk, SOCK_DONE);
+ vsk->peer_shutdown = SHUTDOWN_MASK;
+ sk->sk_state = SS_UNCONNECTED;
+ sk->sk_err = ECONNRESET;
+ sk->sk_error_report(sk);
+ }
+}
+
+static int vhost_vsock_dev_release(struct inode *inode, struct file *file)
+{
+ struct vhost_vsock *vsock = file->private_data;
+
+ spin_lock_bh(&vhost_vsock_lock);
+ list_del(&vsock->list);
+ spin_unlock_bh(&vhost_vsock_lock);
+
+ /* Iterating over all connections for all CIDs to find orphans is
+ * inefficient. Room for improvement here. */
+ vsock_for_each_connected_socket(vhost_vsock_reset_orphans);
+
+ vhost_vsock_stop(vsock);
+ vhost_vsock_flush(vsock);
+ vhost_dev_stop(&vsock->dev);
+
+ spin_lock_bh(&vsock->send_pkt_list_lock);
+ while (!list_empty(&vsock->send_pkt_list)) {
+ struct virtio_vsock_pkt *pkt;
+
+ pkt = list_first_entry(&vsock->send_pkt_list,
+ struct virtio_vsock_pkt, list);
+ list_del_init(&pkt->list);
+ virtio_transport_free_pkt(pkt);
+ }
+ spin_unlock_bh(&vsock->send_pkt_list_lock);
+
+ vhost_dev_cleanup(&vsock->dev, false);
+ kfree(vsock->dev.vqs);
+ vhost_vsock_free(vsock);
+ return 0;
+}
+
+static int vhost_vsock_set_cid(struct vhost_vsock *vsock, u64 guest_cid)
+{
+ struct vhost_vsock *other;
+
+ /* Refuse reserved CIDs */
+ if (guest_cid <= VMADDR_CID_HOST ||
+ guest_cid == U32_MAX)
+ return -EINVAL;
+
+ /* 64-bit CIDs are not yet supported */
+ if (guest_cid > U32_MAX)
+ return -EINVAL;
+
+ /* Refuse if CID is already in use */
+ other = vhost_vsock_get(guest_cid);
+ if (other && other != vsock)
+ return -EADDRINUSE;
+
+ spin_lock_bh(&vhost_vsock_lock);
+ vsock->guest_cid = guest_cid;
+ spin_unlock_bh(&vhost_vsock_lock);
+
+ return 0;
+}
+
+static int vhost_vsock_set_features(struct vhost_vsock *vsock, u64 features)
+{
+ struct vhost_virtqueue *vq;
+ int i;
+
+ if (features & ~VHOST_VSOCK_FEATURES)
+ return -EOPNOTSUPP;
+
+ mutex_lock(&vsock->dev.mutex);
+ if ((features & (1 << VHOST_F_LOG_ALL)) &&
+ !vhost_log_access_ok(&vsock->dev)) {
+ mutex_unlock(&vsock->dev.mutex);
+ return -EFAULT;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(vsock->vqs); i++) {
+ vq = &vsock->vqs[i];
+ mutex_lock(&vq->mutex);
+ vq->acked_features = features;
+ mutex_unlock(&vq->mutex);
+ }
+ mutex_unlock(&vsock->dev.mutex);
+ return 0;
+}
+
+static long vhost_vsock_dev_ioctl(struct file *f, unsigned int ioctl,
+ unsigned long arg)
+{
+ struct vhost_vsock *vsock = f->private_data;
+ void __user *argp = (void __user *)arg;
+ u64 guest_cid;
+ u64 features;
+ int start;
+ int r;
+
+ switch (ioctl) {
+ case VHOST_VSOCK_SET_GUEST_CID:
+ if (copy_from_user(&guest_cid, argp, sizeof(guest_cid)))
+ return -EFAULT;
+ return vhost_vsock_set_cid(vsock, guest_cid);
+ case VHOST_VSOCK_SET_RUNNING:
+ if (copy_from_user(&start, argp, sizeof(start)))
+ return -EFAULT;
+ if (start)
+ return vhost_vsock_start(vsock);
+ else
+ return vhost_vsock_stop(vsock);
+ case VHOST_GET_FEATURES:
+ features = VHOST_VSOCK_FEATURES;
+ if (copy_to_user(argp, &features, sizeof(features)))
+ return -EFAULT;
+ return 0;
+ case VHOST_SET_FEATURES:
+ if (copy_from_user(&features, argp, sizeof(features)))
+ return -EFAULT;
+ return vhost_vsock_set_features(vsock, features);
+ default:
+ mutex_lock(&vsock->dev.mutex);
+ r = vhost_dev_ioctl(&vsock->dev, ioctl, argp);
+ if (r == -ENOIOCTLCMD)
+ r = vhost_vring_ioctl(&vsock->dev, ioctl, argp);
+ else
+ vhost_vsock_flush(vsock);
+ mutex_unlock(&vsock->dev.mutex);
+ return r;
+ }
+}
+
+static const struct file_operations vhost_vsock_fops = {
+ .owner = THIS_MODULE,
+ .open = vhost_vsock_dev_open,
+ .release = vhost_vsock_dev_release,
+ .llseek = noop_llseek,
+ .unlocked_ioctl = vhost_vsock_dev_ioctl,
+};
+
+static struct miscdevice vhost_vsock_misc = {
+ .minor = MISC_DYNAMIC_MINOR,
+ .name = "vhost-vsock",
+ .fops = &vhost_vsock_fops,
+};
+
+static struct virtio_transport vhost_transport = {
+ .transport = {
+ .get_local_cid = vhost_transport_get_local_cid,
+
+ .init = virtio_transport_do_socket_init,
+ .destruct = virtio_transport_destruct,
+ .release = virtio_transport_release,
+ .connect = virtio_transport_connect,
+ .shutdown = virtio_transport_shutdown,
+
+ .dgram_enqueue = virtio_transport_dgram_enqueue,
+ .dgram_dequeue = virtio_transport_dgram_dequeue,
+ .dgram_bind = virtio_transport_dgram_bind,
+ .dgram_allow = virtio_transport_dgram_allow,
+
+ .stream_enqueue = virtio_transport_stream_enqueue,
+ .stream_dequeue = virtio_transport_stream_dequeue,
+ .stream_has_data = virtio_transport_stream_has_data,
+ .stream_has_space = virtio_transport_stream_has_space,
+ .stream_rcvhiwat = virtio_transport_stream_rcvhiwat,
+ .stream_is_active = virtio_transport_stream_is_active,
+ .stream_allow = virtio_transport_stream_allow,
+
+ .notify_poll_in = virtio_transport_notify_poll_in,
+ .notify_poll_out = virtio_transport_notify_poll_out,
+ .notify_recv_init = virtio_transport_notify_recv_init,
+ .notify_recv_pre_block = virtio_transport_notify_recv_pre_block,
+ .notify_recv_pre_dequeue = virtio_transport_notify_recv_pre_dequeue,
+ .notify_recv_post_dequeue = virtio_transport_notify_recv_post_dequeue,
+ .notify_send_init = virtio_transport_notify_send_init,
+ .notify_send_pre_block = virtio_transport_notify_send_pre_block,
+ .notify_send_pre_enqueue = virtio_transport_notify_send_pre_enqueue,
+ .notify_send_post_enqueue = virtio_transport_notify_send_post_enqueue,
+
+ .set_buffer_size = virtio_transport_set_buffer_size,
+ .set_min_buffer_size = virtio_transport_set_min_buffer_size,
+ .set_max_buffer_size = virtio_transport_set_max_buffer_size,
+ .get_buffer_size = virtio_transport_get_buffer_size,
+ .get_min_buffer_size = virtio_transport_get_min_buffer_size,
+ .get_max_buffer_size = virtio_transport_get_max_buffer_size,
+ },
+
+ .send_pkt = vhost_transport_send_pkt,
+};
+
+static int __init vhost_vsock_init(void)
+{
+ int ret;
+
+ ret = vsock_core_init(&vhost_transport.transport);
+ if (ret < 0)
+ return ret;
+ return misc_register(&vhost_vsock_misc);
+};
+
+static void __exit vhost_vsock_exit(void)
+{
+ misc_deregister(&vhost_vsock_misc);
+ vsock_core_exit();
+};
+
+module_init(vhost_vsock_init);
+module_exit(vhost_vsock_exit);
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Asias He");
+MODULE_DESCRIPTION("vhost transport for vsock ");
diff --git a/drivers/video/fbdev/omap2/omapfb/omapfb-main.c b/drivers/video/fbdev/omap2/omapfb/omapfb-main.c
index 2fb90cb6803f..1d7c012f09db 100644
--- a/drivers/video/fbdev/omap2/omapfb/omapfb-main.c
+++ b/drivers/video/fbdev/omap2/omapfb/omapfb-main.c
@@ -1332,7 +1332,7 @@ static void omapfb_free_fbmem(struct fb_info *fbi)
}
dma_free_attrs(fbdev->dev, rg->size, rg->token, rg->dma_handle,
- &rg->attrs);
+ rg->attrs);
rg->token = NULL;
rg->vaddr = NULL;
@@ -1370,7 +1370,7 @@ static int omapfb_alloc_fbmem(struct fb_info *fbi, unsigned long size,
struct omapfb2_device *fbdev = ofbi->fbdev;
struct omapfb2_mem_region *rg;
void *token;
- DEFINE_DMA_ATTRS(attrs);
+ unsigned long attrs;
dma_addr_t dma_handle;
int r;
@@ -1386,15 +1386,15 @@ static int omapfb_alloc_fbmem(struct fb_info *fbi, unsigned long size,
size = PAGE_ALIGN(size);
- dma_set_attr(DMA_ATTR_WRITE_COMBINE, &attrs);
+ attrs = DMA_ATTR_WRITE_COMBINE;
if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
- dma_set_attr(DMA_ATTR_NO_KERNEL_MAPPING, &attrs);
+ attrs |= DMA_ATTR_NO_KERNEL_MAPPING;
DBG("allocating %lu bytes for fb %d\n", size, ofbi->id);
token = dma_alloc_attrs(fbdev->dev, size, &dma_handle,
- GFP_KERNEL, &attrs);
+ GFP_KERNEL, attrs);
if (token == NULL) {
dev_err(fbdev->dev, "failed to allocate framebuffer\n");
@@ -1408,7 +1408,7 @@ static int omapfb_alloc_fbmem(struct fb_info *fbi, unsigned long size,
r = omap_vrfb_request_ctx(&rg->vrfb);
if (r) {
dma_free_attrs(fbdev->dev, size, token, dma_handle,
- &attrs);
+ attrs);
dev_err(fbdev->dev, "vrfb create ctx failed\n");
return r;
}
diff --git a/drivers/video/fbdev/omap2/omapfb/omapfb.h b/drivers/video/fbdev/omap2/omapfb/omapfb.h
index bcb9ff4a607d..555487d6dbea 100644
--- a/drivers/video/fbdev/omap2/omapfb/omapfb.h
+++ b/drivers/video/fbdev/omap2/omapfb/omapfb.h
@@ -28,7 +28,6 @@
#endif
#include <linux/rwsem.h>
-#include <linux/dma-attrs.h>
#include <linux/dma-mapping.h>
#include <video/omapfb_dss.h>
@@ -51,7 +50,7 @@ extern bool omapfb_debug;
struct omapfb2_mem_region {
int id;
- struct dma_attrs attrs;
+ unsigned long attrs;
void *token;
dma_addr_t dma_handle;
u32 paddr;
diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c
index 888d5f8322ce..4e7003db12c4 100644
--- a/drivers/virtio/virtio_balloon.c
+++ b/drivers/virtio/virtio_balloon.c
@@ -207,6 +207,8 @@ static unsigned leak_balloon(struct virtio_balloon *vb, size_t num)
num = min(num, ARRAY_SIZE(vb->pfns));
mutex_lock(&vb->balloon_lock);
+ /* We can't release more pages than taken */
+ num = min(num, (size_t)vb->num_pages);
for (vb->num_pfns = 0; vb->num_pfns < num;
vb->num_pfns += VIRTIO_BALLOON_PAGES_PER_PAGE) {
page = balloon_page_dequeue(vb_dev_info);
diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
index ca6bfddaacad..e383ecdaca59 100644
--- a/drivers/virtio/virtio_ring.c
+++ b/drivers/virtio/virtio_ring.c
@@ -117,7 +117,10 @@ struct vring_virtqueue {
#define to_vvq(_vq) container_of(_vq, struct vring_virtqueue, vq)
/*
- * The interaction between virtio and a possible IOMMU is a mess.
+ * Modern virtio devices have feature bits to specify whether they need a
+ * quirk and bypass the IOMMU. If not there, just use the DMA API.
+ *
+ * If there, the interaction between virtio and DMA API is messy.
*
* On most systems with virtio, physical addresses match bus addresses,
* and it doesn't particularly matter whether we use the DMA API.
@@ -133,10 +136,18 @@ struct vring_virtqueue {
*
* For the time being, we preserve historic behavior and bypass the DMA
* API.
+ *
+ * TODO: install a per-device DMA ops structure that does the right thing
+ * taking into account all the above quirks, and use the DMA API
+ * unconditionally on data path.
*/
static bool vring_use_dma_api(struct virtio_device *vdev)
{
+ if (!virtio_has_iommu_quirk(vdev))
+ return true;
+
+ /* Otherwise, we are left to guess. */
/*
* In theory, it's possible to have a buggy QEMU-supposed
* emulated Q35 IOMMU and Xen enabled at the same time. On
@@ -316,6 +327,8 @@ static inline int virtqueue_add(struct virtqueue *_vq,
* host should service the ring ASAP. */
if (out_sgs)
vq->notify(&vq->vq);
+ if (indirect)
+ kfree(desc);
END_USE(vq);
return -ENOSPC;
}
@@ -415,6 +428,7 @@ unmap_release:
if (indirect)
kfree(desc);
+ END_USE(vq);
return -EIO;
}
@@ -1099,6 +1113,8 @@ void vring_transport_features(struct virtio_device *vdev)
break;
case VIRTIO_F_VERSION_1:
break;
+ case VIRTIO_F_IOMMU_PLATFORM:
+ break;
default:
/* We don't understand this bit. */
__virtio_clear_bit(vdev, i);
diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c
index 7399782c0998..87e6035c9e81 100644
--- a/drivers/xen/swiotlb-xen.c
+++ b/drivers/xen/swiotlb-xen.c
@@ -294,7 +294,7 @@ error:
void *
xen_swiotlb_alloc_coherent(struct device *hwdev, size_t size,
dma_addr_t *dma_handle, gfp_t flags,
- struct dma_attrs *attrs)
+ unsigned long attrs)
{
void *ret;
int order = get_order(size);
@@ -346,7 +346,7 @@ EXPORT_SYMBOL_GPL(xen_swiotlb_alloc_coherent);
void
xen_swiotlb_free_coherent(struct device *hwdev, size_t size, void *vaddr,
- dma_addr_t dev_addr, struct dma_attrs *attrs)
+ dma_addr_t dev_addr, unsigned long attrs)
{
int order = get_order(size);
phys_addr_t phys;
@@ -378,7 +378,7 @@ EXPORT_SYMBOL_GPL(xen_swiotlb_free_coherent);
dma_addr_t xen_swiotlb_map_page(struct device *dev, struct page *page,
unsigned long offset, size_t size,
enum dma_data_direction dir,
- struct dma_attrs *attrs)
+ unsigned long attrs)
{
phys_addr_t map, phys = page_to_phys(page) + offset;
dma_addr_t dev_addr = xen_phys_to_bus(phys);
@@ -434,7 +434,7 @@ EXPORT_SYMBOL_GPL(xen_swiotlb_map_page);
*/
static void xen_unmap_single(struct device *hwdev, dma_addr_t dev_addr,
size_t size, enum dma_data_direction dir,
- struct dma_attrs *attrs)
+ unsigned long attrs)
{
phys_addr_t paddr = xen_bus_to_phys(dev_addr);
@@ -462,7 +462,7 @@ static void xen_unmap_single(struct device *hwdev, dma_addr_t dev_addr,
void xen_swiotlb_unmap_page(struct device *hwdev, dma_addr_t dev_addr,
size_t size, enum dma_data_direction dir,
- struct dma_attrs *attrs)
+ unsigned long attrs)
{
xen_unmap_single(hwdev, dev_addr, size, dir, attrs);
}
@@ -538,7 +538,7 @@ EXPORT_SYMBOL_GPL(xen_swiotlb_sync_single_for_device);
int
xen_swiotlb_map_sg_attrs(struct device *hwdev, struct scatterlist *sgl,
int nelems, enum dma_data_direction dir,
- struct dma_attrs *attrs)
+ unsigned long attrs)
{
struct scatterlist *sg;
int i;
@@ -599,7 +599,7 @@ EXPORT_SYMBOL_GPL(xen_swiotlb_map_sg_attrs);
void
xen_swiotlb_unmap_sg_attrs(struct device *hwdev, struct scatterlist *sgl,
int nelems, enum dma_data_direction dir,
- struct dma_attrs *attrs)
+ unsigned long attrs)
{
struct scatterlist *sg;
int i;